Head gasket questions

[955.0]

I just replaced my head gasket and not knowingly ran it with a leaking t stat housing and she got hot.. Long story short my head gasket is leaking exhaust into my coolant and vice versa. Do i really have to have my heads milled again? I just had them done 2 weeks ago.I think its leaking cause i forgot to put gasket sealer on the ehad gasket. Im running a fel-pro 9333 gasket.

 

[955.0]

also think im gonna re torque the heads to see if it fixes the leak

 

[95opal]

Always i good idea to have them checked. That said a strait edge a feeler guages will give you a clue

 

[96blak54]

Usually the gaskets hold on just fine, its the darn torque to yield bolts that give up causing the gasket damage.

 

[955.0]

Usually the gaskets hold on just fine, its the darn torque to yield bolts that give up causing the gasket damage.

Brand new arp bolts though? Think they stretched and need to be retorqued?

 

[96blak54]

Well, arp usually stand up. Its not like arp to heat stretch, but i wouldn't rule it out. Ive seen stranger things! It sux zbout the added work you gotta do. Once a headgasket goes, there is no return.

Were the surfaces prepped? Do you know the surface roughness finish ?...RA #

 

[955.0]

Well, arp usually stand up. Its not like arp to heat stretch, but i wouldn't rule it out. Ive seen stranger things! It sux zbout the added work you gotta do. Once a headgasket goes, there is no return.

Were the surfaces prepped? Do you know the surface roughness finish ?...RA #

Block was cleaned with a razor blade and heads were almost mirror finish

 

[98snakehorse]

Are these felpro composite or felpro mls?

 

[955.0]

Are these felpro composite or felpro mls?

Composite

 

[98snakehorse]

Odd, composites tend to seal pretty easy. When you pull the heads check with a straight edge to see the condition of the heads and the block aswell. If both check out you should be good to re-install. Do you plan on re-using the ARP head bolts?

 

[96blak54]

Not saying composite is the culprit, buuuuuut you just cant go wrong with mls.

 

[955.0]

Odd, composites tend to seal pretty easy. When you pull the heads check with a straight edge to see the condition of the heads and the block aswell. If both check out you should be good to re-install. Do you plan on re-using the ARP head bolts?

I have a fresh set of fel-pro head bolts. I’ve never seen a steel block warp though. It’s a stock bottom end

 

[98snakehorse]

I have a fresh set of fel-pro head bolts. I’ve never seen a steel block warp though. It’s a stock bottom end

Right wouldnt hurt to check in case its gotten very hot before. Since the heads are coming off anyway wouldnt be the worst idea.

 

[955.0]

Right wouldnt hurt to check in case its gotten very hot before. Since the heads are coming off anyway wouldnt be the worst idea.

Compression tested every cylinder they all came back to 150+ cold. Average being around 160 lowest being 150. Head gasket can’t be blown can it?

 

[96blak54]

Gotta get her warm, and then check....sorry

 

[955.0]

Gotta get her warm, and then check....sorry

Not happening lol. I got equal length short tubes. Not ready to torch my hands off.