Upgrading Engine Ideas
08-25-2008 | 08:58 AM
#51
Registered
Joined: Jun 2005
Posts: 8,407
Likes: 797
From: Central IL
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?
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.
Last edited by Knot 4 Me; 08-25-2008 at 09:02 AM.
08-26-2008 | 08:12 AM
#52
Thread Starter
Registered User
Joined: Sep 2002
Posts: 679
Likes: 0
From: Mahomet, IL
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.
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.
08-28-2008 | 06:32 PM
#55
Thread Starter
Registered User
Joined: Sep 2002
Posts: 679
Likes: 0
From: Mahomet, IL
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.
You and Vinny were correct in thinking seat erosion or valve seating may be an issue. The machine shop inspecting the heads mentioned the valve seats last grind job were less than optimal. I am almost wondering if the grind job was performed by a young apprentice, but speculation is dangerous. I am happy to have a $150 valve job fix the problem. Now back to finding a new motor.
08-28-2008 | 08:08 PM
#56
I hate the winter!!
Joined: Jul 2001
Posts: 2,707
Likes: 0
From: long island, new york
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.
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.
08-29-2008 | 05:08 AM
#57
Thread Starter
Registered User
Joined: Sep 2002
Posts: 679
Likes: 0
From: Mahomet, IL
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.
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.
I will give you a call.
Thanks,
Rob
08-31-2008 | 11:11 PM
#59
Registered User
Joined: Oct 2003
Posts: 9,495
Likes: 6
Too narrow a valve seat face on the exhaust will definitely lead to premature failure. When you get them back, run them with a dab of surface blue and look at the contact points to confirm they have enough surface.
09-04-2008 | 04:26 PM
#60
Thread Starter
Registered User
Joined: Sep 2002
Posts: 679
Likes: 0
From: Mahomet, IL
Onken Racing/Keith Eickert Pics
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.
