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09-18-2006 01:46 PM #1
Chevy 400
Hi
I`ve got a mate with a 400 chevy with a weiland 6/71 blower on it , just had the bottom end rebult and low comprssion piston fitted , but it keeps blowing head gaskets , then at the weekend at a drag meeting did them again when we stripped it out found 3 of the studs into the block were cracked into the bores, is this a common fault or to do with the blower
He has been told to O ring the new block next time instead of head gaskets
is theis a good idea ??
CraigSpeedy speedemon
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09-18-2006 03:33 PM #2
I assume there's steam holes drilled?
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09-18-2006 03:39 PM #3
There are, in my opinion, several things that will cause blown gaskets on a supercharged motor, the deck and/or heads are not parallel, running too much boost for the gasket used and letting the motor run in detonation. You'll have to determine what's happening to fix it. If the motor has been detonating, it's gonna pound the bearings out of it, bend some rods and maybe break some pistons too.PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.
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09-18-2006 04:44 PM #4
Originally Posted by speedemonObjects in my rear view mirror are a good thing unless,.... they have red and blue lights flashing.
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Welcome to CHR. I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed...
MSD 8360 distributor vacuum advance