What happened? Head Gasket, sleeves, head??? LARGE pics for detail...
01-05-2006, 05:54 AM
#26
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Re: (~RTErnie~)
This looks like a classic example of head lift caused by detonation. Here is an article I posted earlier that might answer some of the questions:
http://www.germanmotorcars.com/Detonation.htm
http://www.germanmotorcars.com/Detonation.htm
01-05-2006, 06:17 AM
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Re: What happened? Head Gasket, sleeves, head??? LARGE pics for detail... (520Motorsports)
rough head finish impregnated into the head gasket, in an uneven pattern.
finish needs to be super smooth for the viton coating to work.
step decked sleeving process solves the head lifting.
the ARP head studs should be torqued to the same value that was used when the block was sleeved/bored/honed using deckplate fixture should of been ~70-72 ft lbs.
MLS headgaskets "fail" for a reason, which is very rare, its more an issue that there is a failure happening that takes out the head gasket, simply replacing the gasket, I don't believe will cure the issue's.
finish needs to be super smooth for the viton coating to work.
step decked sleeving process solves the head lifting.
the ARP head studs should be torqued to the same value that was used when the block was sleeved/bored/honed using deckplate fixture should of been ~70-72 ft lbs.
MLS headgaskets "fail" for a reason, which is very rare, its more an issue that there is a failure happening that takes out the head gasket, simply replacing the gasket, I don't believe will cure the issue's.
01-05-2006, 06:19 AM
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Re: What happened? Head Gasket, sleeves, head??? LARGE pics for detail... (520Motorsports)
BTW, your pistons are installed backwards......yes, backwards...........the pockets are 180 degrees out........intakes on the exhaust side.
looks like the piston pockets mmmmmmmight might have been hit by the valves, hard to tell....maybe the engine has not gone into vtec yet? maybe the pockets just clear.
and people think $300 is a "good deal" to assemble an engine...
you now have a mess, ouch.
sorry to tell ya the bad news
another quality build...don't tell me you paid a "professional" to build this?
there is always a cost to the learning curve.......a heart attack can't be fixed with a band-aid!
Modified by PocketRockets Racing at 10:35 AM 1/5/2006
looks like the piston pockets mmmmmmmight might have been hit by the valves, hard to tell....maybe the engine has not gone into vtec yet? maybe the pockets just clear.
and people think $300 is a "good deal" to assemble an engine...
you now have a mess, ouch.
sorry to tell ya the bad news
another quality build...don't tell me you paid a "professional" to build this?
there is always a cost to the learning curve.......a heart attack can't be fixed with a band-aid!
Modified by PocketRockets Racing at 10:35 AM 1/5/2006
01-05-2006, 07:21 AM
#29
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Re: What happened? Head Gasket, sleeves, head??? LARGE pics for detail... (PocketRockets Racing)
Already relized it and fixed it 
, thanks for the info..
, thanks for the info..
01-05-2006, 04:59 PM
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Re: What happened? Head Gasket, sleeves, head??? LARGE pics for detail... (520Motorsports)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 520Motorsports »</TD></TR><TR><TD CLASS="quote"> So here are some details. When we tuned it at 7 psi there was no probs. So I go back to the dyno(with my 3 Bar ) to tune it at 16psi. Thats when the problem showed up. On the dyno at full boost my overflow tank would bubble.
Car held good temp
No coolant/oil mixture probs
If driven normal, there was no probs, only at full boost. Then coolant would be under my hood
ARP headstuds originally torqued to 67 ft lbs
I rechecked studs and they aere still at 67
Solid compression
Here are some LARGE pics for detail. All info is greatly appreciated....
By the way my head gasket fell in the dirt after I pulled it off </TD></TR></TABLE>
do you realize the pistons are in backwards? you have fixed this already?
the intake valves should hit the current exhaust pockets when under vtec......the wrist pin offset is also backwards, which induces wear on the walls and pistons as seen in the pic
) to tune it at 16psi. Thats when the problem showed up. On the dyno at full boost my overflow tank would bubble.Car held good temp
No coolant/oil mixture probs
If driven normal, there was no probs, only at full boost. Then coolant would be under my hood
ARP headstuds originally torqued to 67 ft lbs
I rechecked studs and they aere still at 67
Solid compression
Here are some LARGE pics for detail. All info is greatly appreciated....
By the way my head gasket fell in the dirt after I pulled it off
</TD></TR></TABLE>do you realize the pistons are in backwards? you have fixed this already?
the intake valves should hit the current exhaust pockets when under vtec......the wrist pin offset is also backwards, which induces wear on the walls and pistons as seen in the pic
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