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540 EFI Build-up Thread

RNGRDVE said:
There's a vid on FB. Sounds great.
Click to expand...

For some reason I can't get the video to show up in my photobucket after I uploaded it. Must be too hot for the Internet's!:rof:

And I can't get the web link to the Facebook video from my phone. Guess I should break down and learn how to post to YouTube.
 
"Must be too hot for the Internet's!"

Ron, broke the internet......

Wow, your motor is looking good, very clean rig job!

Good luck-
 
Well she has been fired and runs well. Now, I am dealing with the last couple remaining original merc parts taking a crap. Grenaded the Idle air control valve Friday night, put a new one on and just dandy now......have a power steering leak I haven't diagnosed, I think it has something to do with the new Brazil valve assy. An internal seal in my original transom ram assy might be bad since when you install the add-on steering it exposes the internal ram piston. The leak probably caused me to fry my power steering pump. I threw the belt several times regardless of how tight I would get it. I had issues of the starter acting like it wasn't getting enough current to turn the motor so I redid all of the heavy battery leads and even added a second heavy ground to the motor. Made a small improvement but kicks right over once steerin g pump belt was off. Maybe pump was shot before I started....who knows.

But I digress to the engine. Runs flawlessly, crystal clean oil. Fires right up and idles, shifts gears at 850 rpm perfectly. Water crossover and thermostat work perfectly. Block hits 180* and thermostat opens and stays stable at 150*. It will cycle at no wake speeds. Oil temps are perfect. 250* pan temp when pushing hard and 180* pan temp at very slow cruise. Oil thermostat works perfectly. With my dual temp sensors on a 3 way switch I can tell how oil thermostat is working. Oil cooler will drop 100 degrees oil temp out when around 4500 rpm. I don't think I even got the secondary butterfly s open all weekend and still hit 70 mph with no effort. All and all, motor is doing what it should finally.

I cannot thank Millet's in Ohio enough for finally showing me good machine shops do exist. They have my business for everevery engine here on out. Well worth the drive to go see them
 
What was this thread about again
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I am working on finally getting my Gaffrig switchable mufflers installed now. Would be nice to take some of the drone out for the long no wake zones or to not piss off the crotchety old farts around the family cottage.

I bought these several years back at a helluva deal and gave them a quick polish yesterday. They were originally air actuated and when closed make the exhaust down-firing.

I am debating on whether to try and find an electric actuator to run these or replace with single acting air cylinders and a cheap 12 volt compressor and dump solenoid inside to actuate them. Required cylinder stroke is 1.5"-2". They butterflies have a symmetrical pivot point so using a spring that would be forced open as the exhaust pressure increases is out.

The air cylinders are $30-40 each plus the compressor ($50) and solenoids/fittings/line ($TBD). Or the actuators I have found on the net seem to run $50-200 each for them depending on what you find and if Chinese or not. Either way the force needed to close these is very small compared to the output force of either system. I also pondered if the engine could create enough vacuum at idle to run the cylinders as well. Dedicated compressor is still probably easier however.

I will fire it up on the hose and see what difference they make manually closing the butterflies after I leak-check the power steering system.

IMG_20150709_172320082_zpsxiunrfho.jpg
IMG_20150709_172328957_zpsronrajpe.jpg
 
Wow this build has been incredible. I cannot tell you how captivating this blog has been.

Bect of luck to you and hope to see you on Keuka Lake some time.
 
Hey Ron, those mufflers look really kool, sure would like to hear an audio of them opened and closed when you run her up on the hose.

Oh and a quick question, what brand drive shower is that ?

Kurt
 
Yea, I will slip then on one of these days for the comparison. I pulled then back off to go to the lake. I went to the local Automation shop to get new air cylinders but they didn't have anything like what came on them. I have some ideas. Just haven't had the time or money to build the air system from scratch yet. They are supposed to have a 10 dB reduction which hopefully will pull the drone out of the cockpit for no wake zones and take some bite out of the idle when I am at the old fart marina where our cottage is. Been there twice and never had a complaint....yet. But I fire up and get out on the water. I don't rev it or leave it running excessively either.

I did clear the busy party pavilion out at the launch last Saturday when I fired her up. My buddies 454 pulled about 5-6 onlookers. I pulled the rest of them out when I backed in and started after him ha-ha. It is very much a fishing boat and tooner type area.
Pavilion was on complete other side of service building too.

I have no idea what drive shower that is. Came on the boat ha-ha. Does work well though. Never had any chalking or signs of heat on my upper.
 
Little update on things:

Finally figuring out where my peaky powerband is and what I should be running for props. I threw a less than perfect 23p Hydromotive QIV on yesterday and promptly ran it up to 76.5 mph GPS with 4 people, two coolers, full 75 gal fuel, and on flat water before pitching my power steering pulley yet again at 6200 rpm.

I had a smile on my face for sure finally getting some speed out of her. I will send that prop out for reconditioning and some labbing this winter as it could use some added cupping to the blades.

Never would have dreamed that I would have to drop that much pitch to actually go faster. No wonder I have been disappointed so far. I dropped only two inches in pitch from last weekend and gained 1000+ rpm
 
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