Originally Posted by Knot 4 Me (Post 2656080)

Hey Bert, might want to buy a poncho. Looks like a storm is coming your way! :eek::drink:

You're not the only one on D3 on the sidelines now. Friday afternoon, Boody and I did a hot lap (well, Boody did a hot lap, I did a lukewarm lap!) from the marina to the first bridge and back. We waited outside the marina for Pratt to hook up with us. When we all took off, Boody's port motor revved up but went nowhere. He shut it down and then it wouldn't restart. Starter wouldn't engage the flywheel. Nick came down with a breaker bar to turn the motor by hand thinking it might have a broken tooth on the flywheel but the starter still wouldn't catch. Further investigation revealed the flywheel is bent/cocked out of position so the starter gear can't get to the ring gear! Explains why it revved up too like it spun the coupler. Motor is coming out today. Hopefully it is just a busted flywheel and not a broken crank!! :eek:

Originally Posted by RJBBC (Post 2655283)

I had lunch at the Red Snapper today in Destin, FL. The Emerald Coast Poker Run was on despite some less than ideal weather. I am not sure if this post is related to the thread but boy did some of these boats sound good idling through. Put a smile on my face that our current motor broke so we can add more power.:ernaehrung004:

Originally Posted by RJBBC (Post 2649434)

We currently have a 2000 Checkmate 259 Convincor. We purchased the boat new in 2002. The engine (454MAG MPI) and drive (B1) have 275 hours. The boat had an engine upgrade kit installed at about 215 hours.(cam, exhaust, valvetrain upgrade). The engine was dynoed after upgrade at 461HP (5100RPM) and 514lbs/tq (3800RPM). Recently the engine lost power and a compression test was performed. Here are the numbers by cylinder: 1-150,2-150, 3-130, 4-100, 5-110, 6-85, 7-170, 8-85. Any thoughts on what could be wrong? Anyway I am using this problem as an opportunity to upgrade our power. I would like to stay NA and go to a carb motor. Should we try and salvage the motor we have or go to a larger displacment motor? 600HP is the goal number. The boat has full hydraulic steering and HP tabs. The engine must be user friendly as this is a family boat. Wife needs to be able to drive it. The boat will be used for cruising, some water sports and an occasional WOT run. The project budget is 15K.
Thanks in advance,
Rob

Originally Posted by Vinny P (Post 2662402)

Hey Rob,

When the engine was upgraded, were the heads pulled and angles cut on valves and seats? If not, how many hours are on the heads? It is difficult to see from the pictures. Do the seats look good? Can you take a close up of the leaking valve seats? Was the plug in that cylinder showing a lean condition?

Originally Posted by RJBBC (Post 2662262)

The motor is out of the boat and partially disassembled. Cylinders and heads look good. The low compression in some cylinders is from valves failing to fully seat, but why? Included here are pictures of the shortblock, heads and the intake valve from cylinder 8. What do you think?

Originally Posted by Knot 4 Me (Post 2662810)

Why? That would be a good question for the person that did the head work and remapped the ECM. You should have gotten a lot more hours out of that upgrade. I still wonder if you were leaned out until the fuel pump that should have been on from day one was added.

FYI. Eickert is now located in Easton, Il. My dad has already seen the dyno room. I asked him to inquire whether or not they are willing to take on smaller side jobs such as your boat and Pratt's boat or if their focus is solely on Onken Racing endeavors.

Originally Posted by RJBBC (Post 2664063)

Do you have a phone number for Eickert?

Originally Posted by RJBBC (Post 2653364)

Thanks KAAMA. I have already sent 10x a message.

Originally Posted by Chris Sunkin (Post 2662283)

Could be too tight of stem clearance. have you changed anything on your cooling system? Lost an impeller or had a cooling issue? Heat makes exhaust valve stems expand. More heat- more expansion. Too much and they can gall and sometimes stick. Also, bad fuel or a lean condition in the fuel system can cause excess heat- leading to seat erosion and valve tulip-ing. Check to see if they're all the same length.

Originally Posted by Vinny P (Post 2667687)

Rob,

Well.... The good news is you can repair the heads, re-assemble that 454 and sell it off as a working engine. Good luck with the new engine. If you ever want to talk about combinations, drop me a line. My 540 may not be the best one out there, but its a damn good one.

Originally Posted by RJBBC (Post 2674654)

Here are a few pictures taken yesterday at Onken Racing/Eickert Engines. I want to thank Jeff Sheary for setting the field trip up and Donnie Onken and Keith Eickert for showing us around and sharing some of their current projects.