SR20 Head Thickness

[YoungGun]

Anyone know how thick the stock head is on a SR20?

I need to get my block machined and am trying to make sure the pistons wont hit the valves.

I have a 1.1mm head gasket, so maybe I can get away with it, just trying to make 100% sure first.

Thanks in advance.

[YoungGun]

Someone must know this information.

[let5l1de]

if im not mistaken, the maximum limit is .2mm. This number is figured by adding both the amounts of head and block resurfacing.

Examples:
.15mm head & .05mm block

or

.1mm head & .1mm block


~m

[Hashiriya415]

137mm for S14 SR20DET head

[Hashiriya415]

.2 is a limit for resurfacing but you can take away more, it's your timing, lift of the valves, and valve size that matters, and of course the piston if you changed to a different height or design

[YoungGun]

Alright thanks guys.

I was just wondering cause my head needed to be welded and decked already so I needed to measure it to see how much I will be able to take off the block.

Do you think the S13 and S14 are the same size?

[let5l1de]

Originally Posted by Hashiriya415

.2 is a limit for resurfacing but you can take away more, it's your timing, lift of the valves, and valve size that matters, and of course the piston if you changed to a different height or design

lol ! everything matters when you go beyond the limit...

Just have your machinist give a recommended thickness of head gasket unless you trust your numbers.

Or, I can build your engine! I have Chucks SR (my old blacktop) on lockdown when hes ready for moer power.

pm me if interested.

~m

[YoungGun]

And I just found out that stock headgaskets are 1.1mm.

God dammit.

Whatever i'll keep this one for another build.

[YoungGun]

Anyone else have a measurement for a s13 sr head?