head gaskets ?

so this is a pic of my old deal , is this from a bad nos tune or is this just due to a bad install on gaskets ? are blown head gaskest due to a bad tune or just to much nos ?








or is this just commen place for a 10 bolt head deal ?

WOW Bruno, looks like there might have been some lean issues. There is a lotta white in there.

The exh. gaskets were 'flipped' the wrong way.
Was the block oringed?

Lem Evans wrote:The exh. gaskets were 'flipped' the wrong way.
Was the block oringed?

yes Lem the old block was o-ringed ..... and yes the gaskets were installed the wrong way

There very well could have been spray/tuneup issues . I'm sure it's just me but I've had better luck with the Cometic MLS gaskets than the copper .

Pistons look washed, also looks like alot of idle time, but the tuneup may have been off and contributed to the gasket issue.

bruno wrote:

Lem Evans wrote:Was the block oringed?

yes Lem the old block was o-ringed

I was going to ask the same thing. On the back side of the gasket you only really see evidence of the O-ring imprint real good between the cylinders, and almost none where the leak/blown-out areas are at. How far did the O-rings stand out of the deck surface Nick? Also what kind of sealing goop did you use & where they ever retorqued?

Lem, are these areas where his head gaskets leaked in the same general area where the extra head bolts are located at on the newer 18 bolt heads/blocks?

That was with his factory block.

DILLIGASDAVE wrote:

bruno wrote:

Lem Evans wrote:Was the block oringed?

yes Lem the old block was o-ringed

I was going to ask the same thing. On the back side of the gasket you only really see evidence of the O-ring imprint real good between the cylinders, and almost none where the leak/blown-out areas are at. How far did the O-rings stand out of the deck surface Nick? Also what kind of sealing goop did you use & where they ever retorqued?

Lem, are these areas where his head gaskets leaked in the same general area where the extra head bolts are located at on the newer 18 bolt heads/blocks?

Looks like the deal is leaking on both sides.....intake and exh. It may be a case of lifting the head or a poor o-ring job...it'd be hard to say from where I'm setting...did I say I aint a fan of the copper deals
More bolts is a good thing but more bolts to try to cover another issue is not .

Thanks Lem.

I forget if it was this site or the old one, but wasn't there some discussion on increasing the torque numbers a given amount on the middle head bolt/studs vs the outers on the ends of the heads?

More bolts is a good thing but more bolts to try to cover another issue is not .

Good point. The devil is in the details.

Less tq. on the corners was about cyl head bending on the corners...I think....It's something to think about but i.m.o. I would not think about it much .

richter69 wrote:That was with his factory block.

yep it was with the old block

O-ring the heads and the block,put stainless wire in the groove in the head and use the one in the block for a reciever groove.Have the wire stick out .011 ,use a thin coat of permatex right stuff sealer on both sides of the copper gasket.Works for me, 15/1 and 190 horse shot of nitrous 10 bolt heads.Make sure its tuned properly not too much timing.Have enough tourqe on the heads.

bruno wrote:so this is a pic of my old deal , is this from a bad nos tune or is this just due to a bad install on gaskets ? are blown head gaskest due to a bad tune or just to much nos ?








or is this just commen place for a 10 bolt head deal ?

projected tip plugs? detonation? too much timing and way too much fuel

DILLIGASDAVE wrote:

bruno wrote:

Lem Evans wrote:Was the block oringed?

yes Lem the old block was o-ringed

I was going to ask the same thing. On the back side of the gasket you only really see evidence of the O-ring imprint real good between the cylinders, and almost none where the leak/blown-out areas are at. How far did the O-rings stand out of the deck surface Nick? Also what kind of sealing goop did you use & where they ever retorqued?

Lem, are these areas where his head gaskets leaked in the same general area where the extra head bolts are located at on the newer 18 bolt heads/blocks?

i used a product called yamabond and the o-rings were out about .012 .....

copper head gaskets don't seal for crap. But if you run any kind of boost then you need them. The other ones would just blow right out when you hit the boost.