ZT260 Motor (Too Much is Just Enough)

[Dave's ZT260]

It looks like the quest for 100mph may be over soon. I've been waiting to post a picture for months. Here are a few sneak peeks at the new motor.
http://www.moorhuscomputers.com/side2.jpg
http://www.moorhuscomputers.com/front.jpg
http://www.moorhuscomputers.com/rear.jpg

Engine builders seem to have two speeds, Slow and stop. After this weekend it looks like I have them in slow gear again. (Which beats stop any day)

Everything but the braded hose and wiring was done. Since the pictures were taken that’s done too. It's time to dyno and with any luck this weekend is the big splash.

Under the shine is a 540ci, callies racemaster crank, oliver rods, ross pistons and AFR 357CC AL heads. Solid lifters with a 680 lift 255, 260 duration 114 lobe sep. On top are two Whipple 2.3L EFI blowers with 94Ib injectors.

Any guesses on top speed? We have 5000Ibs of boat with fuel and driver. HP will vary by octane, but it should be in the 1000-1200 range.


If this dosen't do it, Checkmate will have to build a new cat.
http://checkmate-boats.com/groupee/forums/ws/,s,8626072361/Graemlins/beer1.gif

[Dave's ZT260]

It looks like the quest for 100mph may be over soon. I've been waiting to post a picture for months. Here are a few sneak peeks at the new motor.
http://www.moorhuscomputers.com/side2.jpg
http://www.moorhuscomputers.com/front.jpg
http://www.moorhuscomputers.com/rear.jpg

Engine builders seem to have two speeds, Slow and stop. After this weekend it looks like I have them in slow gear again. (Which beats stop any day)

Everything but the braded hose and wiring was done. Since the pictures were taken that’s done too. It's time to dyno and with any luck this weekend is the big splash.

Under the shine is a 540ci, callies racemaster crank, oliver rods, ross pistons and AFR 357CC AL heads. Solid lifters with a 680 lift 255, 260 duration 114 lobe sep. On top are two Whipple 2.3L EFI blowers with 94Ib injectors.

Any guesses on top speed? We have 5000Ibs of boat with fuel and driver. HP will vary by octane, but it should be in the 1000-1200 range.


If this dosen't do it, Checkmate will have to build a new cat.
http://checkmate-boats.com/groupee/forums/ws/,s,8626072361/Graemlins/beer1.gif

[Kip Combs]

http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/bounce.gif.....sweet looking motor! Can't wait to see how fast it runs! .....i'm guessing over 100 easy!

[Chris]

Awesome! http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/devil.gif

[BOB'S 283]

dave ,,, 10-4 on the slow and stop !!!!! if it runs 1/2 as good as it looks ,you got it made .... whats next ?

[senator-holland]

sweet baby you have there! http://checkmate-boats.com/groupee/forums/ws/,s,8626072361/Graemlins/yell.gif

the lake is getting smaller with each upgrade!

[Eriktheviking]

Awesome!I'm jealous.Looks like the same set up as in the DeNooyer's Cat.(Pictured on the Perf.Marine site)What size is each of the superchargers? Definetly want to see it run!

[Dave's ZT260]

Erik,

They are twin 2.3L Whipples. Same as DeNooyer's, but fuel injected rather than carbed. I also have the same Cam in there. That’s how we know it can make 1200+ HP on race fuel.

[cooperider]

I think that motor could push anything over 100. http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/thumb.gif

[BOB'S 283]

zt , do you know how many hours denooyer has gotten out of his ?

[175checkmate]

Drool, slober, wipe off keyboard.
Man that is just to cool.

[Dave's ZT260]

Bob,

So what's your top speed number?

DeNooyer's engines have 200hrs on them, but they need a valve job ever 60hrs. Jason said with my new heads 150hrs would be ok. The bottom end should last 500hrs. I still have to adjust the valves every 40hrs.

The price we pay for speed.

[BOB'S 283]

dave your intervals are not bad considering the hp . impressive all the way around .as for mine ,i've only made a couple quick test runs . still uncomfortable til i find the oil leak and exhaust problem. haven't been able to get to it and my marina is burried.and the rain ain't helping ..... speedo showed 79 , up from 70-72 last year .will gps it this weekend if everything else falls into place.are you going to be able to get any pics running ? a profile shot should get on the cover of checkmates next brochure .........

[Eriktheviking]

Zt, What are you gonna run for a prop? Nothing like some Billet Aluminum on an engine http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/biggthumpup.gif http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/devil.gifGOT-HORSEPOWER http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/devil.gif

[Dave's ZT260]

I would be all over the engine builder for that crap. Far too much $$$ for oil leaks and engine noises.

When my mate hits the water this weekend, I'll put all the pictures on the board. Maybe even a shot of the gauges including the GPS at high speed.

I'd be surprised, but if Kip wants a shot for a brochure I'd be happy to help.

[bdusted440]

Hmm 1200hp =race fuel=6.75 gal x 100 gal.ouch but well worth it. Grin factor 100+++++++ http://www.checkmate-boats.com/infopop/emoticons/icon_wink.gif

[Dave's ZT260]

She's no cheap date!

Fortunately I can run on pump gas and still make 1000hp.

Looks like I'll have to drive less and drink more.... http://checkmate-boats.com/groupee/forums/ws/,s,8626072361/Graemlins/beer1.gif

[BOB'S 283]

zt ,,i'm not jumping on anyone yet . the oil leak could be a fitting that was damaged on the install and the noise i still think is in the silent choice . it was on the dino with dry exhaust. it was an absoulte bitch getting the engine in with a 3 inch exstension on the coupler. we'll find it , but i just had to close the hatch and get away from it sunday . we both know its the price you pay when you give up "stock"......

[Dave's ZT260]

Bob,

Good luck with the problems, you need to finish her up for the weekend. Sounds like some long nights if you plan to tackle this yourself. If all else fails you can drive less and drink more (like me) http://checkmate-boats.com/groupee/forums/ws/,s,8626072361/Graemlins/beer1.gif

[BOB'S 283]

zt , i think you caught my drift . it'll get fixed in due time. i am more in the mood for a "few" with the rest of my boating friends. it can look like a "high dollar woman" sitting at the dock ....

[JUPITER PULSARE]

ZT 260, GREAT MOTOR!! I THINK YOUR FIRST TIME OUT SHOULD CONSIST OF NO BREAKFAST, TIGHT JOCKSTRAP, GOOD GOGGLES, SAFETY VEST, AND A **** EATING GRIN EAR TO EAR!!!! HAVE FUN, BE SAFE! http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/thumb.gif

[vinny p.]

That's one impressive looking beast!! All I can think of is the Bravos that motor will be eating for lunch. Unless you squeezed in a #6.

[BOB'S 283]

we're back to spring water (debris) conditions with all this rain . i know you will pick your spots carefully

[Dave's ZT260]

Bad news-

Jason seems to be in stop mode again. Waiting for some small parts and the dyno is giving him trouble. On the bright side he is putting in the old motor for the weekend. So 90mph will have to due for now.

When the new motor is in I will have a crash vest, Full face helmet and two kill cords on me. I just wish there was a way to put a #6 drive in. (No room no how) Vinny knows I will be ripping the XR drive apart. Glad I have a spare.....

[vinny p.]

It is a shame that there really is no alternative when it comes to drives. As Checkmate owners, even if we had the $50k or more for a #6, we just can't fit the transmission that it requires. I don't see an XR living too long with that kind of power. But, it will be a hell of a ride while it does hold together. I don't think that the cost of fuel is a factor to consider, the cost of a couple of drives a season is what would be my concern. Good luck and be safe..

[Dave's ZT260]

Vinny,

There is one new solution on the market. IMCO's 4X4 drive with an extension box that houses a transmission. I may buy one if it holds together for others. Otherwise it's keep a spare for that rainy day. God knows I will.

[vinny p.]

I didn't know that it is possible to house a trans in an extension box. I have not researched that possibility. I will most likely never have the kind of power to worry about that sort if thing. It sounds like a good one, except that these Checkmates don't seem to react to well to extension boxes. But, considering the alternative of breaking drives, I would pick the box. How much power can an Imco 4X4 take???

[Dave's ZT260]

No one other then Mercury's #6 drive claims to be able to handle 1000+HP. But IMCO's 4X4 and Bmax seem to be able to handle much more than the 600HP the XR is rated for. The Bmax doesn't need a transmission, but the 4X4 does. I would go to a Bmax but I have heard others complain about them. I do not want an extension box period.

Anyone have something to say about the Bmax?

[vinny p.]

While I have never had a B-Max, I have heard there have been problems shifting them. I am not certain whether or not the problems have been repaired. I have seen them hanging off a boat last year. They look pretty heavy duty, but looks can be deceiving.

[Dave's ZT260]

I spoke to Dean at Bmax today, and I'm this close to buying one. The cost through May is almost 2K less than normal. If I don't hear something bad soon tomorrow one will be on order.

[BOB'S 283]

dude !!!if you don't hit your goal , it won't be because you didn't throw everything you could at it . btw , when you're done using the printing press , can i use it for an hour ?? more power to ya

[Dave's ZT260]

Sold-

Bmax is on the way. I really didn't have the money, but I didn't want to paddle back either. Now I hope I can just nail it at 40MPH and feel the acceleration. http://www.checkmate-boats.com/infopop/emoticons/icon_biggrin.gif

[Eriktheviking]

Hey Zt,
You know we're all stopping down for ride.Can you purchase a few more helmets and vests for us? http://www.checkmate-boats.com/infopop/emoticons/icon_wink.gifAre you gonna be mostly on the Hudson this summer?

[Dave's ZT260]

Bring your own helmets and vests. I'll be out there this weekend at the hudson island. If your gonna be out there let me know.

[BOB'S 283]

it ought to have mid range punch closer to a sled . erik or someone , get some running shots . i would think scream and fly or hotboat or someone that does readers rides would have some interest in this .

[BOB'S 283]

i missed the part about the bad news and new motor not being ready this weekend somehow ......that sucks !!!

[Eriktheviking]

I'll be out in one of my boats Sunday but it won't be the Scarab.Still getting it ready.I don't think I'll go that far south.Where is Hudson Island compared to the lighthouse?

[Dave's ZT260]

If memory serves, you are talking about the lighthouse in Coxsackie and its 5 miles south to Hudson island. The main channel goes to the east we are at the north tip on the west side. You will see all the boats there. Mostly checkmates.

If you know where Hagger's harbor is in Anthens then your within 1/4 mile of the island.

[BOB'S 283]

i know where you're talking about . if i remember about 12 feet of water thoughout that stretch . either way you can't miss a bunch of boaters doing what boaters do best

[Eriktheviking]

I'll definetly stop down at some point this Summer http://checkmate-boats.com/groupee/forums/ws/,s,8626072361/Graemlins/beer1.gifNever been past the light house.

[BOB'S 283]

zt..got more details on my oil leak . wondering if you have the merlin block also with the remote oil filter from teague as i do. it wasn't run on the dyno with the teague parts and MY braided lines..... my install guy has it on his bench and is going to reinstall tomorrow . been wrestling with this thing for too long. hopes yours goes better

[Dave's ZT260]

I have a merlin bock with remote oil filter with braided everything, not sure if it was from teague. Where is the leak?

[BOB'S 283]

seems to be between the block and adapter . seems like the o rings are not meaty enough.it won't do it at the dock , only under speed. jack was going to call jason for his thoughts . are you any closer on yours ????

[Dave's ZT260]

Jason's Dyno is down. Crap!!
It should be up this week.

Can you put bigger O-rings? How much oil pressure you running?

[BOB'S 283]

rumor has it jason is upgrading everything and reinforcing the building for some killer motor he 's building for a checkmate .anyway ,jack is overniting a new piece from canton the oil pan people . its the piece he uses on the "modifed" motors he builds. i checked another site and others have had the problem also . so am still interestd in how and what you do/use . if it was easy , everyone would be doing it

[Chris]

Hey fellas,

If a bunch of you head out together, get some pics will ya! It would be great to see two or three Mates anchored in front of that lighthouse you mentioned. http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/thumb.gif

[Eriktheviking]

Don't worry Chris I'll get some pics! http://www.checkmate-boats.com/infopop/emoticons/icon_wink.gif

[Brian]

Don't worry chris when my motor is back together I will get ya a pic with maybe 5 or more check's in it, hows that!!! http://www.checkmate-boats.com/infopop/emoticons/icon_biggrin.gif

Brian

[F150GT]

Brian
What happened to your motor?

[Dave's ZT260]

He blew her apart!
New power head is on the way. Thank god for 3 year warrantees.

[Brian]

Thanks ZT Yeah I blew her apart not even running it, Bom. Or should I say BOMB. is covering the whole thing. ZT mike said he had no time to even look at the power head, So I went down and did it my self be certified in all.Well the rep.'s coming this week and the new MORE powerful powerhead is on the way. http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/thumb.gif I'll be out soon. Two weeks.

Brian

[F150GT]

My buddys 235 ate a piston second trip out, nice way to start the season.

[Brian]

F150gt Yeah it sucks but what ya gona do. Fix it and be done with it, and enjoy the rest of the summer.

[Dave's ZT260]

Bob-

Jason just called and my canton oil pan was leaking as well. Piece of chit!!! A new one is on and he is dynoing the motor right now. This crap is like Murphy's law.

[BOB'S 283]

zt , you gotta be chittin me !!!!! lucky he was looking for it . mine didn't leak on the dyno the first time. on the automotive stuff they refer to it as a "pore". this blows my mind . jack had a new merlin block there with cracks where they press the studs into it . merlin didn't say anything to him untill he brought it to their attention . "oh yeah our tolerences were off on a bunch " glad you found yours this way !!!!!

[Dave's ZT260]

I just got some dyno numbers. At 12Ibs boost and running rich we were at 1150HP and 1000 Ft-Ibs torque. We had to order more pulleys to make 15Ibs. So by Thursday we will have the final numbers. Next week the engine finally goes in. IT'S ABOUT TIME!!!

[Chris]

Dave,

Get me some audio of this thing running. Maybe 15 or 20 seconds. Or even a video!

This thing is BAAAAAAAD ASS! http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/devil.gif

[vinny p.]

Those are some impressive numbers. Isn't 12 lbs of boost kind of on the high side already?

[Dave's ZT260]

I'll get some video next week.

The compression is at 8 1/4:1, so we can run 10ibs on 93 octane and up to 15 Ibs on 110. I don't think I will need any more than 1000hp to hit 100mph. But it's nice to know you have more power than boat.

[Dave's ZT260]

So the dyno numbers are in. Race fuel and 16Ibs boost 1360HP, 93 octane 10Ibs boost 1015HP. Jason said he's never made more than 1300Hp before, so he is pretty proud of this engine. Now if he can just finish installing the engine today. I'll be out there this weekend for testing. http://www.checkmate-boats.com/infopop/emoticons/icon_biggrin.gif

[91 GTX]

GREAT NUMBERS, YOU GOING TO STAY UP HEAR FOR THE WEEKEND OR TAKE IT HOME TO PLAY? IF SO WE GOT TO GET TOGETHER FOR A FEW BEERS AND PICS.MAYBE GO TO THE SAC. AND MEET UP WITH BOB AND ERIC IF HE MAKES IT UP

[SCT]

Dave,

1360 HP!!!!! Wow, I can't wait to hear how the boat runs! You should be well over 100 mph.....
Good luck.

[Chris]

HOLY SMOKES! http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/devil.gif

[JUPITER PULSARE]

WHAT KIND OF DRIVE ARE YOU GOING TO SUBJECT 1360 HP TO??? HOPEFULLY SOMETHING THAT IS BULLIT PROOF!!! http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/thumb.gif WITH THAT MOTOR IN A BOAT, I WOULDN'T TAKE MY HANDS OFF THE WHEEL TO WIPE THE TEARS FROM MY EYES. WEAR GOGGLES!!! http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/thumb.gif

[Dave's ZT260]

Bmax 1.3 ratio. I know I'm still pushing my luck but a have no other choice. I know drag racers that put 1400Hp to these drives.

[vinny p.]

http://www.checkmate-boats.com/infopop/emoticons/icon_eek.gif 1360 h.p. http://www.checkmate-boats.com/infopop/emoticons/icon_eek.gif

[Dave's ZT260]

The mate is back in my procession. We ran her for a couple hours dialing in the air fuel ratio on Lake George yesterday. The Police just loved the sound... Unfortunately the water was rough and I used a 29 Hydro 4 blade to test. So I couldn't get in to the real power (5000rpms was all), but it ran 87mph. Within the next day or so I will be running a better prop and on smoother water. I think she will hit 100 and I'm still on 93 octane.

BTW, you have to hear this run, It is ridiculously loud. I'll get some video clips later today.

[Eriktheviking]

Hey Dave,Why don't ya Bring it to Sacandaga this Saturday.Theres gonna be a get together at Sand Island of cool boats,live music,chics http://www.checkmate-boats.com/infopop/emoticons/icon_eek.gif,beer http://checkmate-boats.com/groupee/forums/ws/,s,8626072361/Graemlins/beer1.gif,poker run http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/surf.gif (I think)etc,etc.I know BOB will be there,I think I'll make it and maybe 91 GTX and whoever else.I want to hear and see that thing run.

[BOB'S 283]

dave , if thats what you're getting from a 29 , i probably just wasted anoter trip out to syracuse . picked up a 26 bravo 1 . expecting it to turn 5100 or so. but speedwise be better than the 24 .

[BOB'S 283]

erik . haven't heard much lately on the sand island thing . the bar that was behind it closed this past week , but some others were supposed to pick up the slack . poker run is out , will pass on info as i become aware.

[Eriktheviking]

That figuires http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/irked.gif,Do you have any props for sale BOB?I'd like to experiment with some. Maybe a 25 Mirage ,22 or 24 Bravo 4 blade? The Scarab engine is a screamer.Real happy with the way it runs.Getting 73 speedo @ 5500 rpm.I think it has the balls to turn something a little larger.Plus those revs are a little high. What do you run for plugs? NGK R's?

[BOB'S 283]

exchanged the 24 bravo for a 26 . using a borrowed 25 mirage currently . have a 24 mach sterndriver sittin on the shelf.whats on big red ?????

[Dave T]

Bob,
I was at Lanzi,s sunday and the poster was still on the wall for the party .I no A bunch of places are in on the party.How did the boat run?DAve,Like Eric said ,you should come up to the Sagandaga.Did you get A ticket up on LG.
DAve

[Eriktheviking]

BOB, Its an older solid hub 23 mirage.

[Dave's ZT260]

No ticket in LG, but it would happen if I stuck around. I doubt I will have all the kinks worked out for a run up north this weekend. But I will be in LG for July 16th-19th. (camping on the islands)

I took some video of the engine tonight,and emailed it to Chris so hopefully it will be online soon.

I'm shooting for 100mph tomorrow night on the Hudson. Stay tuned.

[Chris]

Here is the link. This is a BIG file and will take a while to download for those on dialup. Don't say I didn't warn ya. http://www.checkmate-boats.com/infopop/emoticons/icon_biggrin.gif

Video (http://checkmate-boats.com/images/videos/1300HP.AVI)

[BOB'S 283]

thats some impressive machinery !!!!!!

[Dave T]

Dave zt26,
Did you make A run tonight?
Dave

[Dave's ZT260]

The weather was not cooperative so it will have to wait until Friday at the earliest. I'm almost ready to take her out during lunch. http://checkmate-boats.com/groupee/forums/ws/,s,8626072361/Graemlins/yell.gif

This is killing me!!!

[vinny p.]

O.K. I know that I am a not good with home computers. Maybe you guys can help here. I couldn't open the video. After the download, a screen comes up saying that the file was not found. Any suggestions...

[Chris]

It's a windows media file. You should just be able to click on it and it should play. If you don't have windows media player then you need a player that will play the .avi file format. http://www.checkmate-boats.com/infopop/emoticons/icon_smile.gif

[Dave's ZT260]

Vinny-

Download the latest real player from www.realplayer.com (http://www.realplayer.com)

I just got in from a late night run. With the 24 mirage plus it would run 92mph at 6100rpm. The slip is at 17% so I will put a 1" spacer in tomorrow and try again. I think I need a 24 or 26 Bravo prop to be sure. Anyone have one I could try? I also think the exhaust is holding me back. I plan to order new CMI Big tubes this week.

[Brian]

Dave I have a 26 4 blade you can run, I'll be out sunday, let me know!

Brian

[Dave's ZT260]

Brian-

Is it a bravo 1 prop? I need one that can handle the 1 1/4 " merc propshaft. (I have the brass insert)
I'll be out there saturday and sunday for sure.

Thanks

[Eriktheviking]

CMI's will be a nice finishing touch to that package.You said it was real loud,Is that a dry exhaust set up? Suppose to be nice this weekend.(If you can wait that long)Good Luck

[Brian]

Dave i found a 26 bravo on las vegas hot boats
www.lasvegashotboats.com (http://www.lasvegashotboats.com) go under the forum, and its the first add in the classifieds.

Brian

[Dave's ZT260]

Brian-
what is the 26 4 blade you have???

[cor124]

Hey Vin,

If that doesnt work try and right click the file and save the attachment to your desktop. Then open it using your media player. I had the same problem and i had windows media player.

Cor

[vinny p.]

Cor124,

Thanks.. That trick worked for me.. http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/thumb.gif

[vinny p.]

Dave,

What are your plans for the old motor?

[Dave's ZT260]

You gotta have a backup plan!!!

The summer is too short.

[vinny p.]

I don't blame you at all. When you are messing around with tempermental motors like you are, you need a back-up. The reason I asked is that a friend is in the market for a good blower motor. We don't care if it needs to be freshened, it just has to have good parts.

[91 GTX]

DAVE, HOW'S THE FIREBREATHINGDRAGON ? GIVE ME A E-MAIL WHEN YOU GET THE NEW EXHAUST AND I,LL TAKE YOUR SPARE PARTS.

[Kip Combs]

What's the latest on this monster ...? Can't beleive your spinning props that small.....I think Kunkel was turning a 30 or 32 bravo with the 253 he had running 108 last year? They could tell you for sure. They also said the new 5 blade Maximus was a good prop for high horsepower set up's.

[Dave's ZT260]

Kip-

You have to remember I'm running a Bmax with 1.3 ratio. My main issue right now is the exhaust system. I need more flow so I ordered Stelling tubular headers. Top speed thus far is 95mph. With the new headers I'm pretty sure I could go over 108mph if I could control it. Time will tell.

On another note, I just rewired part of my boat. The issue surrounded the fuses that were added to the trim pump and trim tab pump leads. The wire from these units was #8 but when the factory hooked them to the battery switch they used #12 with fused links. The increased resistance and 35-amp load caused the fuses to blow all the time. I replace them with #8 wire and the problem is gone. I’ll love to know who decide to go to from #8 to #12 wire at the factory. Hopefully these issues are not continuing now. Though you would like to know.

[Kip Combs]

Yea ....my bad i forgot you were using the 1:3 gears. Thanks for to info... i'll check the wiring deal out! Keep us updated on this monster! http://checkmate-boats.com/6/ws/,s,8626072361/Graemlins/thumb.gif

[JASON KUNKEL]

DID I HEAR MY NAME? WE ARE RUNNING A 36P BRAVO 1 WITH A 1.50 GEAR RATIO AT 6000 RPM.
WE HAVE MADE SOME CHANGES AND NEED TO GET TO THE LAKE AND TEST IT OUT....BEEN TO BUSY WITH CUSTOMER BOATS....WILL POST AFTER TESTING.....GOING TO TRY A 32P MAXIMUS ON THIS SET UP JUST TO SEE WHAT IT WILL DO....HAS WORKED PRETTY GOOD SO FAR ON OTHER STUFF WE TRIED SPINS JUST LIKE A 36 BRAVO 4 BLADE AS FAR AS RPM...GREAT OUT OF THE HOLE AND VERY SMOOTH TOP END NUMBERS ARE RIGHT THERE WITH THE BRAVO.
A LITTLE TO MUCH DIAMETER.

ZT 260 WHAT EXHAUST WERE YOU RUNNING BEFORE?

[Eriktheviking]

I believe he's currently running Gils.

[Dave's ZT260]

Emi thunder is on there right now. Good for under 800hp but not at this level. I'll be very interested in the maximus numbers. You could cut the diameter down and lab it. I did on a hydromotive 4 blade and it worked well on my persuader.

[Dave's ZT260]

Jason-

Have you gotten a chance to run the maximus yet? I would be real interested if it works well at 100mph+.

[Chris]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by JASON KUNKEL:
DID I HEAR MY NAME? WE ARE RUNNING A 36P BRAVO 1 WITH A 1.50 GEAR RATIO AT 6000 RPM.
WE HAVE MADE SOME CHANGES AND NEED TO GET TO THE LAKE AND TEST IT OUT....BEEN TO BUSY WITH CUSTOMER BOATS....WILL POST AFTER TESTING.....GOING TO TRY A 32P MAXIMUS ON THIS SET UP JUST TO SEE WHAT IT WILL DO....HAS WORKED PRETTY GOOD SO FAR ON OTHER STUFF WE TRIED SPINS JUST LIKE A 36 BRAVO 4 BLADE AS FAR AS RPM...GREAT OUT OF THE HOLE AND VERY SMOOTH TOP END NUMBERS ARE RIGHT THERE WITH THE BRAVO.
A LITTLE TO MUCH DIAMETER.

ZT 260 WHAT EXHAUST WERE YOU RUNNING BEFORE? <HR></BLOCKQUOTE>Good to see you Jason! http://www.checkmate-boats.com/infopop/emoticons/icon_smile.gif

[91 GTX]

DAVE, GIVE US AN UPDATE!!!!!! HOW'S IT RUNNIN?FAST I HOPE.

[Dave's ZT260]

Nothing to report really- Runs 95 but I need the new exhaust to go faster, it was ordered 10 day ago, but its still a few weeks out. I did crack the mirage prop I had. Mercury is replacing it. Must have been a defect. http://www.checkmate-boats.com/infopop/emoticons/icon_biggrin.gif

[senator-holland]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Dave's ZT260:
I did crack the mirage prop I had. Mercury is replacing it. Must have been a defect. http://www.checkmate-boats.com/infopop/emoticons/icon_biggrin.gif <HR></BLOCKQUOTE>

maybe to much HP? lol http://www.checkmate-boats.com/infopop/emoticons/icon_biggrin.gif

[91 GTX]

DAVE, HOW'S IT RUNNING? LIKE TO GET TOGTHER ONE DAY AND SEE IT RUN. LET ME KNOW WHEN YOU GET YOUR EXHAUST. HOPE THEM PARTS ARE STILL AVALIBLE

[Dave's ZT260]

Tim-

I think I might need the exhaust manifold for the old motor. But everything else including the new risers are available. Call me when you have time.

BTW I'll be in LG the 13-16 if your around

[91 GTX]

DAVE, ARE YOU CAMPING THIS WEEKEND ON L.G.? IF SO WHERE? I,LL STOP BY SUNDAY IF YOU ARE

[Dave's ZT260]

I'll be on east dollar island. Just past the narrows. I figure you know where. My new exhaust should be shipping within a week. Let me know if your still interested.

[91 GTX]

YES I AM, IF YOU WHANT TO BRING THE REST OF THE STUFF WITH YOU I'LL MEET YOU BEFORE YOU PUT IN IF NOT I'LL TAKE A RIDE DOWN NEXT WEEK

[Dave's ZT260]

I can bring the heads, intake, cam and carb with me. I will be at performance marine friday morning at 11-12AM, but I can meet you anytime I am in L.G.

How about those pictures from the poker run? Are they ready?

[91 GTX]

DAVE, I,LL TRY TO MEET YOU AT PERFORMANCE ON FRI.I,LL SEE IF I CAN GET THE PICS DEVELOPED BY THEN. BE CARFULL ON THE LAKE, THE L.G. PATROL IS REALLY BUSTIN BALLS WITH SPEED AND LOUD EXHUAST

[Dave's ZT260]

I'll keep you posted for Friday, the weather looks bad so I maybe coming later or even Saturday.

[Dave's ZT260]

Tim-

I'm not coming up until at least Saturday Morning. The weather is making the decisions now. I can call you whenever I finally leave for L.G.

[Dave T]

Dave 260,
Did you sell your old exhaust yet.I was looking for ss risers. I have A new set of emis with alm risers(need ss).Do you have any other parts for sale?
Dave T

[Dave's ZT260]

I think Tim wants the risers, but I'll let you know.

I also have an XZ Upper and a complete XR Sportmaster 1.36 ratio.

I'm starting to consider selling the 502 blower motor as well.

[Dave T]

Dave,
Let me no on the risers .Im getting sick of looking at my 502 siting on the engine stand (time to finish it).How much shorter is the sportmaster then A stock bravo.
Thanks Dave T

[Dave's ZT260]

They are the same length.