Forced Induction Supercharger/Turbocharger

to much boost? head gaskets went..

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Old Aug 8, 2006 | 09:24 PM
  #16  
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Re: to much boost? head gaskets went..

my heads should not need decked since the car only ran for bout 5mins or less then antifreeze starting pooring out.
Old Aug 9, 2006 | 01:46 PM
  #17  
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Re: to much boost? head gaskets went..

Get a new set of Felpro gaskets and stick with the ARP bolts, studs on these cars are a PITA. The bolts should be fine at your level. Did the shop perform a hardness check on the heads?
Old Aug 9, 2006 | 02:10 PM
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Re: to much boost? head gaskets went..

Originally Posted by 97WS6SCharged
studs on these cars are a PITA.
Why? The ARP studs ae hexed in the center for easy removal.
Old Aug 9, 2006 | 02:21 PM
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Re: to much boost? head gaskets went..

Originally Posted by RealQuick
Why? The ARP studs ae hexed in the center for easy removal.
That's true, I forgot about the hex studs. I still don't believe they're necessary for what he is doing though.
Old Aug 9, 2006 | 02:37 PM
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Re: to much boost? head gaskets went..

For head gaskets, I consulted the builder of our SB2.2 race engines...

Fel-Pro is fine for anything on low boost.

Cometics work great for higher boost levels, but can be a PITA to seal if the heads or block are not prepared well.

SCE ICS Titan is great for higher boost levels and don't require the perfect flatness that cometics do. He recommended these for my application (up to 20psi, lots of street use).

And he mentioned one other that had a wire ring surrounding each combustion chamber. I forget the manufacturer or type, but didn't recommend it because the ring actually imprints into aluminum heads and the heads need to be resurfaced every time you pull them.
Old Aug 9, 2006 | 02:52 PM
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Re: to much boost? head gaskets went..

Originally Posted by Roadie
For head gaskets, I consulted the builder of our SB2.2 race engines...

Fel-Pro is fine for anything on low boost.

Cometics work great for higher boost levels, but can be a PITA to seal if the heads or block are not prepared well.

SCE ICS Titan is great for higher boost levels and don't require the perfect flatness that cometics do. He recommended these for my application (up to 20psi, lots of street use).

And he mentioned one other that had a wire ring surrounding each combustion chamber. I forget the manufacturer or type, but didn't recommend it because the ring actually imprints into aluminum heads and the heads need to be resurfaced every time you pull them.
You done yet?
Old Aug 9, 2006 | 02:54 PM
  #22  
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Re: to much boost? head gaskets went..

well i already went this am and picked up the ARP studs.. i will just sell my ARP head bolts,they only have 300miles on them. i went with felpro 1074's.
Old Aug 9, 2006 | 03:01 PM
  #23  
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Re: to much boost? head gaskets went..

hardness check? what exactly is that? i have no clue if they did.. they just ported the heads out and decked them.

makes me wonder if my head gaskets were time booms waiting to happen? cause last year on the dyno the elbow on are water pumps that has to be turned so the hose will clear the blower it came loose and blew antifreeze out everywhere. the car did some dyno time before the problem so it was hot and maybe my heads got warped and it was a matter of time for the gaskets to give out??

does getting them decked raise compression?
Old Aug 9, 2006 | 10:43 PM
  #24  
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Re: to much boost? head gaskets went..

Originally Posted by RealQuick
You done yet?
No. I was in Europe on business the last two weeks and am finally back at home. With work plus racing damn near 50 nights already this year, I think I'm going to need to take a 2 week vacation just to put the damn thing together.
Old Aug 10, 2006 | 03:58 AM
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Re: to much boost? head gaskets went..

Originally Posted by flusz28
well i already went this am and picked up the ARP studs.. i will just sell my ARP head bolts,they only have 300miles on them. i went with felpro 1074's.
>aren't theses head bolts "torque to yield" type that stretch when torqued?
I am using the ARP head studs and they are not that difficuult to replace.
loosen all of the head bolts per engine side and have an allen wrench with plenty assembly lube available just ensure the water jackets are dry before insetring the lubed studs.
Old Aug 11, 2006 | 10:07 AM
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Re: to much boost? head gaskets went..

Somewhere up there, you said "400 whp with bad fuel pump."

I am assuming you are basing this on the car going tragically lean or something. If so that is likely what killed the gaskets. At your boost level, with proper fueling the gaskets you are/were running should have been fine as is.
Old Aug 11, 2006 | 10:29 AM
  #27  
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Re: to much boost? head gaskets went..

dyno results proved 400rwhp,so thats where i got that number. but i'm buying new heads,pistions,bearing and stuff now anyhow.
Old Aug 11, 2006 | 11:25 AM
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Re: to much boost? head gaskets went..

I was more concerned with the fuel pump than the dyno number.
Old Aug 11, 2006 | 06:07 PM
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Re: to much boost? head gaskets went..

>do you have an inline fuel pump or just the Walbro?

aren't there 2 versions of the 255LPH pumps (hi press and low press or is it volume?)
Old Aug 11, 2006 | 08:09 PM
  #30  
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Re: to much boost? head gaskets went..

Originally Posted by bowtiepwr
>do you have an inline fuel pump or just the Walbro?

aren't there 2 versions of the 255LPH pumps (hi press and low press or is it volume?)
High and low pressure (should be same volume just at different pressures). I think the low is the gs307 and the high is the gs340.



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