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re riggin the 2800sx....
- Thread starter 2tonchevy
- Start date
In my book 8-10 lbs is getting down there. Can you drop them a hole this week and see what you get?
I was always in the thought process that higher was better(and you could run higher pitch props) as long as you hadd good water pressure and the handling was good. But I actually lowered my motors an 1.5" and the speed went up and the ass end settled down at WOT. I guess every boat is different.
Good luck-
I was always in the thought process that higher was better(and you could run higher pitch props) as long as you hadd good water pressure and the handling was good. But I actually lowered my motors an 1.5" and the speed went up and the ass end settled down at WOT. I guess every boat is different.
Good luck-
man i agree...8-10 is bottoming out for sure. i am going to give the engines some tlc and then try one more time.....after the next run i will have checked and double checked everything (a good idea in my book regardless) so the next step will be to take the engines down a notch. (bout 3/4 of an inch)
im in no great hurry at this point. im workin my a$$ off right now and dont have much time anyway. im positive i will find it and when i do it will be something simple.
i just wanna thank all of you guys for the input! means alot!
max
well i started tearing into the motors today (both were showing minor leaks around the exhaust chest gaskets so i am gonna do a complete inspection / replacement on both engines: popet valves/gaskets, chest gaskets, thermostats, head gaskets, etc.........started on the port motor first...(the one that isnt running hot) found several major obstructions in the ports in the exhaust chest. a large piece of the water pump sleeve/guide, two large chunks of impeller (at least thats what it looked like). gonna clean the hardware put new gaskets on and reassemble this after noon.
pullin the chest off of the starboard motor now.
pullin the chest off of the starboard motor now.
broke a chip out of the exhaust divider on the starboard engine tryin to get it off..
..(it was really stuck...i mean for real) so i ordered a new one of of ebay (40 bucks NIB)
found one major obstruction : large piece of wood had one of the holes completely clogged. other than that everything looks good. gonna pull the heads this after noon and replace head gaskets.
..(it was really stuck...i mean for real) so i ordered a new one of of ebay (40 bucks NIB)found one major obstruction : large piece of wood had one of the holes completely clogged. other than that everything looks good. gonna pull the heads this after noon and replace head gaskets.
JUPITER PULSARE
Well-known member
broke a chip out of the exhaust divider on the starboard engine tryin to get it off..
found one major obstruction : large piece of wood had one of the holes completely clogged. other than that everything looks good. gonna pull the heads this after noon and replace head gaskets.
Now you got me wondering...my starboard motor pumps very little water out of the teltale (but never overheats) compared to my port motor. I am running one piece exhaust dividers with stock power heads which tend to make the power heads run cooler...maybe I have a blockage in my starboard motor??
well im runnin the two piece dividers....and both of them had major obstructions...not just little stuff....it was def enough to cause som reduced flow....but it was on the bottom two cylinders on both engines.
interestingly enough the motor that was runnin cooler had more stuff in the passages. lol i can def see how this area can be problematic especially running high x dimensions with LWP. i think its def worth takin a look if yo get some down time. i read that running them on the hose and shooting each cylinder area with a point and shoot thermometer can do well for indicating blockage in this area or the cylinder heads.
question: is it ok to clear the passages in the exhaust chest by shooting compressed air through them? i have both lowers off and it would seem like there wouild be no possibility for damage by doing so ...justy wanna make sure before i try it.
at any rate its giving me an opportunity to inspect the rings and pistons a bit. they look fine at least in the areas that i can see through the ports. waitin on the divider to get here. gonna get the exhaust chests done first then head gaskets and thermostats.
interestingly enough the motor that was runnin cooler had more stuff in the passages. lol i can def see how this area can be problematic especially running high x dimensions with LWP. i think its def worth takin a look if yo get some down time. i read that running them on the hose and shooting each cylinder area with a point and shoot thermometer can do well for indicating blockage in this area or the cylinder heads.
question: is it ok to clear the passages in the exhaust chest by shooting compressed air through them? i have both lowers off and it would seem like there wouild be no possibility for damage by doing so ...justy wanna make sure before i try it.
at any rate its giving me an opportunity to inspect the rings and pistons a bit. they look fine at least in the areas that i can see through the ports. waitin on the divider to get here. gonna get the exhaust chests done first then head gaskets and thermostats.
JUPITER PULSARE
Well-known member
illMATTic
Well-known member
The best this boat has looked right here.
thanks man!
im waiting on the 5200 to dry on the floatation bracket so i can put it back in the water and run it with the new motor height. hopefully this afternoon.
lol not yet as per our conversation earlier. (thanks for your help by the way)
ive got some things to check and will report back asap. my dealine is rapidly approaching.....if i dont have this thing rockin by this weekend i may have to cancel the keys trip.
i have to cancel two weeks prior in order to not forfeit my deposit.......time is never on my side .......
im givin er hell...if the rain will stop ima head to the water to test a few things
Come on man. Lookin for some good news here.
lol hey man! i just wanna thank yo again for the time you have taken to help me after the sale! your a really cool cat for that.
i have made some progress...but one step forward and two steps back. lol
\
the overheating problem has been fixed ( the motors were just too high)
but after taking your advice and checking out the lowers further i found that one of the nose cones is about to literally fall off!!!! so i will nee dto do a remove and re fit on the cone before safely venturing out again.
its slowly coming along!!! lol
demag67
Well-known member
Glad to hear you got the overheating problem taken care of. I know the guy said the nose cones weren't fully welded but he said he did 2 2 in long welds on each side and that was strong enough after the epoxy. I didn't see it I only did the finishing on the epoxy work to save some money. Sorry to hear about the cone.
hey man dont apologize...its all part of the deal. lol boats are a pain in the ass....
ima try to get this cone fixed this week and take another test run this weekend.
hey man thanks for the compliment!
i wasnt looking to sell the PMs but i was made an offer i couldnt refuse by a cash buyer and let em go. so i sold the powerheads, lowers and cowls over the winter for.
the previous rigger had used a 3/4 inch aluminum plate bolted across the entire back of the setback bracket to accommodate the 22.5 inch centers required to run merc factory alien cowls on a 2.5 powerhead....so that was the first thing to go. the original holes were still there (18 inch centers) and worked perfectly for my 200s and offshore cowls (although i had to make my own tie bar) this setup is several pounds lighter and much cleaner looking.
the closer centers has mad ethe boat handle much better and the 200s run perfectly. i havnt gpsd it yet but im running the props 1.5 inches above the hull in front of each engine and turning 26 hydromotives @ 6100-6200 rpm full of fuel and 3-4 passengers. the boat should break into the low 70 no problem. i have a nice set of labbed merc 3 blade choppers im going to try.
the boat handles 100 times better now than it did with the previous setup....i mean its very very very noticeable how much better it is in rough water....and it was good before......now it literally eats up rough water...the faster you go the better it takes the sets...the current setup is much more balanced and forgiving so the driving experience is more enjoyable. it takes the holiday weekend water on cumberland at speed without breakin a sweat.
all in all a much better boat when rigged as intended from the onset. i would like more power of course....lol but thats always the case...maybe some day soon....but for now im just enjoying it. the stand up bolsters and the addition of the sun pad/splashwell cover as well as the bow hatch and the cuddy furniture have all made it a very nice lake boat.