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Old 10-01-2025, 07:55 AM   #5
DarkPira7e
Rust bucket enthusiast
 
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Join Date: Feb 2017
Drives: 2013 Turbo Firestorm FRS
Location: Vermont
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Quote:
Originally Posted by davydawg View Post
Thanks for the feedback - I'm starting to realize that.
Either that, or just the short block and have the heads freshened up?

Does anyone know what having heads "rebuilt" or freshened up on these cars would entail?

Alternatively, I do just find an OEM engine with low miles (likely from JDM source) and swap it in as-is, which would very much be direct drop in, and I could enjoy the car as-is.

Just trying to weigh my options.
@DarkPira7e - I see in your signature you have an IAG block - was that the short block mated to the OEM heads? What did you have to do, if anything, to the heads for that setup?

thanks in advance!
Yes, my heads that were on the car initially, not new heads. I bought a new set of OEM head gaskets and I used new ARP head studs. Gently cleaned off the old rtv sealant, replaced the oil filter screens, cleaned out the cam gears, put in new valve springs and replaced the valve seals.
My car was a spun bearing failure though, I absolutely recommend not touching the cam gears.

If you do this preemptively, I would get new valve springs and seals. Change the little filters, get OEM head gaskets and ARP head studs. Send the heads to a shop for planing to make sure they are absolutely perfect and flat.
I also replaced my direct injectors at this time to make sure the seals were new and installed correctly. Do not try to fiddle with the direct injector seals yourself, massive headache.
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Turbo FR-S Build - Build Thread
JDL EL Recirc manifold, Boostlab BL58x Turbo w/ T51R, 17x9 ARC-8, IAG block

Last edited by DarkPira7e; 10-01-2025 at 08:17 AM.
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