Lifting The Heads?
Originally Posted by KAOS
using arp studs, so it looks as though i need new gaskets? right. think i can make it to the track 1 time before the tear down
Yes you will need to replace the gasket
Originally Posted by KAOS
that sucks i really wanted to go one time before i had to rip back into it. we'll see how brave i am
Check it out. Do not reuse the gaskets.
Originally Posted by Got Me SOM
if you're burning it , it will blow out white smoke, it will be very obvious to see.
Kaos,
I forgot about this one, Sitting in the drivers seat, at idle, rev to about 5000 RPM, you will see the white smoke, make sure to lift the hood.
no white smoke tried it yesterday. i had my fiance stand be hind and look, she said it was black then a little grayish. my be thats about the same. i have a buddy with a rx7 with blown seals, now that is white smoke but i really didnt see any. i thought i saw a little blue smoke but i was inside the car. thanks for the help fellas. will try to figure out what the deal is
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Banned - TROLL
Joined: May 2005
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Your problem is likely the use of 6.0l head gaskets. The 6.0 firing ring sits completely outside the cylinder sleeve on a 5.7 block, thereby never sealing against it. Instead, it tries to seal against the softer aluminum block, and the cylinder heat eventually "channels" a path through the block. Since it never seals anywhere along the sleeve, it allows boost pressure and heat to "bleed" into the water passages. If not taken care of quickly, the block can be badly damaged, or even destroyed.
Also, if you are still stock compression, I would pull a degree or so of timing and tune it to about 11.0-11.5:1 max A/F. Keep in mind, with an intercooled car, they will lean out considerably on the street. Zero KR on the dyno doesn't always equal Zero KR on the street. You'll just want to verify.
FWIW, a wideband in the car is priceless.
Also, if you are still stock compression, I would pull a degree or so of timing and tune it to about 11.0-11.5:1 max A/F. Keep in mind, with an intercooled car, they will lean out considerably on the street. Zero KR on the dyno doesn't always equal Zero KR on the street. You'll just want to verify.
FWIW, a wideband in the car is priceless.
so i should use stock 5.7 head gaskets. i just used the 6l because it seemed as though thats what everybody else was using. i can see you point on that one. and my AF is very safr anywhere from 11.0-11.6, i think thats the highest it goes. i will pull some timing. so you think that a stock head gasket will work and take care of the problem. thanks in advance.
Originally Posted by KAOS
so i should use stock 5.7 head gaskets. i just used the 6l because it seemed as though thats what everybody else was using. i can see you point on that one. and my AF is very safr anywhere from 11.0-11.6, i think thats the highest it goes. i will pull some timing. so you think that a stock head gasket will work and take care of the problem. thanks in advance.
Last edited by CANNIBAL; May 5, 2005 at 03:55 PM.
but the graphite wont seal either if the metal one wont. i just want this thing running, to a point where i dont have to worry about it every single second im driving it. so do i need to get 5.7 head gaskets and will they work with the 6l heads or do i just need to get 5.7 heads and run the right gaskets. i will do what ever it takes to have this thing running right.
Originally Posted by MrDumas
Your problem is likely the use of 6.0l head gaskets. The 6.0 firing ring sits completely outside the cylinder sleeve on a 5.7 block, thereby never sealing against it. Instead, it tries to seal against the softer aluminum block, and the cylinder heat eventually "channels" a path through the block. Since it never seals anywhere along the sleeve, it allows boost pressure and heat to "bleed" into the water passages. If not taken care of quickly, the block can be badly damaged, or even destroyed.
Also, if you are still stock compression, I would pull a degree or so of timing and tune it to about 11.0-11.5:1 max A/F. Keep in mind, with an intercooled car, they will lean out considerably on the street. Zero KR on the dyno doesn't always equal Zero KR on the street. You'll just want to verify.
FWIW, a wideband in the car is priceless.
Also, if you are still stock compression, I would pull a degree or so of timing and tune it to about 11.0-11.5:1 max A/F. Keep in mind, with an intercooled car, they will lean out considerably on the street. Zero KR on the dyno doesn't always equal Zero KR on the street. You'll just want to verify.
FWIW, a wideband in the car is priceless.
huh, 5.7 bore block, 6.0 heads, 6.0 gaskets, 30psi, not pushing water.
match the gasket to the larger bore, chamber or block.
get some new gaskets and call it a day.
Originally Posted by y2khawk
huh, 5.7 bore block, 6.0 heads, 6.0 gaskets, 30psi, not pushing water.
match the gasket to the larger bore, chamber or block.
get some new gaskets and call it a day.
match the gasket to the larger bore, chamber or block.
get some new gaskets and call it a day.
6.0 heads match a 4" bore (6.0 block)
the 5.7 bore is ~3.89 stock, most take it out to 3.905+.
If you have a large bore head like the 6.0, AFR, etc. you need a gasket that will clear the chamber.
The heads have the larger bore in your case, so use the gaskets that go with the heads.
for example, my truck is using a 3.910 bore LS1 block with stock 5.3L heads. The heads have a smaller chamber diameter that the block, so I am using the gaskets for a 5.7 since the block has the larger bore.
the 5.7 bore is ~3.89 stock, most take it out to 3.905+.
If you have a large bore head like the 6.0, AFR, etc. you need a gasket that will clear the chamber.
The heads have the larger bore in your case, so use the gaskets that go with the heads.
for example, my truck is using a 3.910 bore LS1 block with stock 5.3L heads. The heads have a smaller chamber diameter that the block, so I am using the gaskets for a 5.7 since the block has the larger bore.
Originally Posted by KAOS
but the graphite wont seal either if the metal one wont.
Originally Posted by KAOS
to match the gasket to the bore? if they are the same i just buy new ones right? stock bore, stock 6l heads, i havent touched a thing. so i just have to buy new gaskets, correct?
TECH Enthusiast
Joined: Aug 2003
Posts: 596
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From: Downers Grove,IL
I'm using a 4.130 bore gasket on my 5.7. ls1 heads with enlarged chambers to 4.0". MrGasket brand MLS.
Had them on for a couple years now.They have held up fine to my 14psi max runs and even with stood last nights fiasco of 260' plus coolant temps.
I do not think you need to worry about a larger bore gasket on your 5.7.
I did blow out a set of large bore felpros though.
Steve
Had them on for a couple years now.They have held up fine to my 14psi max runs and even with stood last nights fiasco of 260' plus coolant temps.
I do not think you need to worry about a larger bore gasket on your 5.7.
I did blow out a set of large bore felpros though.
Steve