I wanna do a frank build and I found a k24 block that's out of a stock tsx for $450 and a k20a2 head from a RSX for $125, $500 for both. Block is fine but the head has a dropped valve. Guy said the head needs some work for $300-400 he estimates. Does this sound like a good idea?
I've been reading up on frank builds and I've seen a thread on k20a.org http://www.k20a.org/forum/showthread.php?t=13433
Says the k24a2 head has more potential with a porting. I don't plan on fully building the motor but I'd like to know what would have more potential if the bottom end was fully built in the future and made to rev higher. A ported k20a2 head or ported k24a2 head? Reason I ask is cause my neighbor has a k20a valve train and I could find a k24a2 head or get the k20a2 head from this guy and get it fixed.
it might be worth it to go with the K20 head. from people with a lot more experience on head porting than I have, they don't agree that the k24a2 head is better overall.
Hard to tell from pics but I agree with these guys ^^^. It almost looks as though the valve seat has cracked through to the spark plug hole. In any event, it will require quite a bit of welding and machine work to bring back into spec. As common as K20 heads are on the used market, I might just strip this one for parts and call it a day. Good luck.
I'll most likely buy it all and if the price of repair is higher than a used head I'll sell it. The valve train is included so that'll put me ahead anyways.
The guy said the ring was gone and the metal workers would have to re weld some things or something. He never mentioned anything about cracked but I'll see.
Had the same thing happen to me, dropped a valve which broke and then impaled itself in the head. Ended up sending it to PortFlow in Cali and having it repaired + port and polish. They restored it good as new!
i have a bare k20a2 head I'll sell ya for 150 in way way better shape than that... located in north nj. had it as a spare. add whatever valves, valvesprings, etc you want.
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