peteracing
Expert
Mr sled, you should make this a sticky....
Do not use cometic head gaskets unless you closely examined its fabrication!
Lot's of those are defective by design. The "embossement" surounding each
holes in gasket, cylinders, oil passages and coolant passages are sometimes
MISSING! usually coolant and/ or oil and if you don't pay enough attention
the gasket looks perfectly ok BUT, you will be sory to have to dissasemble the whole thing AGAIN to remove that gasket if it is defective!...
Go safe and use 2 or 3 Yam. gaskets
Do not use cometic head gaskets unless you closely examined its fabrication!
Lot's of those are defective by design. The "embossement" surounding each
holes in gasket, cylinders, oil passages and coolant passages are sometimes
MISSING! usually coolant and/ or oil and if you don't pay enough attention
the gasket looks perfectly ok BUT, you will be sory to have to dissasemble the whole thing AGAIN to remove that gasket if it is defective!...
Go safe and use 2 or 3 Yam. gaskets
Man sounds like cometic head gaskets are just JUNK!!!
Skydog
Skydog
Buckeye
Lifetime Member
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I have used them for the past 2 years with no issues. Last year the .057 and this year the .054. I guess i got ones from good runs. I don't get it. I would think they are all made on the same machine. I know 2 othe r guys using them without problems either.
Turbo Tim
TY 4 Stroke Master
Buckeye said:I have used them for the past 2 years with no issues. Last year the .057 and this year the .054. I guess i got ones from good runs. I don't get it. I would think they are all made on the same machine. I know 2 othe r guys using them without problems either.
2 0.54 's ...........no probs at all......
Freak
TY 4 Stroke Junkie
I have had two that were bad. Here is a pic of where they are defective. The flat spot that makes the water seal is cut too thin or just plain not there. Someone was at cometic when the cut these.
I just dont think its worth it when two yammys are better and the same price.
I just dont think its worth it when two yammys are better and the same price.
Attachments
treewhacker
Expert
Do yourself a favor, leave your engine stock. They run fantastic with stock gaskets and turbo and you know they were assembled right.
Turbo Tim
TY 4 Stroke Master
treewhacker said:Do yourself a favor, leave your engine stock. They run fantastic with stock gaskets and turbo and you know they were assembled right.
My engine is not stock ..................and it's assembled right . :ORC
LICKETY SPLIT
Extreme
3000 miles on my .054 cometic no problem with cometic or mc front mount mc turbo,must have a good one.