EA82T head bolts - Reusable?

[4RnrRick]

Are the head bolts on a EA82T Reusable? or are they Torque to Yeild?

 

 

Oh and where is a good & cheap place to get Head Gasket Sets? or Should I just get individual Head gaskets. (I'm planning on building a High compression MPFI (minus turbo) with a SPFI short block.)

[SoobGoob]

i used the fel-pro head gaskets from napa. about 15$ a piece. work very well, was recommended by GD. you can pick them up on their website

[NorthWet]

EA82 head bolts are reusable; they are not torque-to-yield. Regarding head gaskets, by "where" do you mean dealer-vs-auto parts store, or brand? Consensus seems to be either dealer/OEM or FELPRO. NAPA-branded seems to get panned often, and almost everyone offering an opinion swears by dealer intake and exhaust gaskets (others being inferior design/construction and failure-prone). I would go with the gasket set, as there are SO many little gaskets involved. Also, there is an oil passage gaket ("o-ring") between the head and cam-carrier that needs to be the dealer-style metal-reinforced o-ring rather than a standard rubber o-ring.

[[HTi]Savage]

I used the fel pro perma torque head gaskets. They require no retorquing.

there on my RX with High compression block, with Turbo. So far they work the best.And the bolts are reuseable.

[idosubaru]

i'm with all those guys...reuse the bolts and fel pro no retorque gaskets.

 

if you're going with highcompression turbo, maybe you want to check our ram performance - they sell custom high performance EA82 headgaskets.

[Snowman]

The only caveat I would add to the bolt-reusing bit is that if you know the engine they came out of got totally fried from overheating, I would be scared to use them for fear of the heat changing the properties of the metal. I'm not a metallurgist so I don't have a clue if that's actually possible, but I'd rather not take a chance.

[GeneralDisorder]

The only caveat I would add to the bolt-reusing bit is that if you know the engine they came out of got totally fried from overheating, I would be scared to use them for fear of the heat changing the properties of the metal. I'm not a metallurgist so I don't have a clue if that's actually possible, but I'd rather not take a chance.

 

Most tempering of steel occurs at around 500 degrees and up - oil and salt bath tempering can range from around 475 degrees to over 1000 degrees and higher. So I wouldn't expect any problems with reusing them. I've reused plenty that were overheated. It shouldn't damage the properties of the bolts any. If you got the engine hot enough to de-temper the steel in the bolts you would also de-temper the piston rings, and the engine would seize

 

GD

[Snowman]

Good to know. Yeah, if your engine temp was over 500, I would imagine that you'd be having some other issues, considering, like, the flash point of motor oil, among other things.

[4RnrRick]

Thanks for the info guys!

 

So should I torque them to factory spec - or is over torquing common a practice?

 

I know with Toyota Supra Motors (7MGE & 7MGTE - 3.0L I-6 motor) the factory spec is too low and its a common pratice to over torque them by 15-20% since they are know for head gasket failures.

[GeneralDisorder]

The consensus around here has been 55 or 60 lbs instead of the factory spec of 47. Personally I do 55, and that has been 100% reliable for me (I don't dabble in turbo's though). No head gasket I've ever replaced with a Fel-Pro, and 55 lbs has shown any signs of failing.

 

GD