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Oil coolers are a good idea. OT warms oil up faster, and keeps it cooler when driving hard.

Not sure what the guy selling the motor was talking about with oil jets. You don't really want to plug oil squirters.

Make sure the k24 oil galley is plugged at the bottom if using rsx oil pump. Also make sure the head gasket matches the head.
I guess people are using the term oil jet for the oil galley. Yes plug that up. And I thought u needed a head gasket that matches your block!?
 
Discussion starter · #22 ·
I guess people are using the term oil jet for the oil galley. Yes plug that up. And I thought u needed a head gasket that matches your block!?
Match the head. K24a2/K20z3 heads have different coolant passages on them, that's why their head gaskets are different and they have the coolant diverters. Match the head gasket to the head.
 
Match the head. K24a2/K20z3 heads have different coolant passages on them, that's why their head gaskets are different and they have the coolant diverters. Match the head gasket to the head.
im sorry buddy but you are incorrect. u need to use the K24 head gasket.
http://www.8thcivic.com/forums/diy-...ums/diy-honda-civic-engine/96928-k24-k20-frankenstien-swap-what-needs-done.html
http://www.k20a.org/forum/showthread.php?t=13887
http://www.k-series.com/content.php?733-Hybrid-Racing-K24-K20-Hybrid-Motor-Build
 
Discussion starter · #24 · (Edited)
They are telling you to use k24 head gasket due to the bore. You can buy over bored k20 head gaskets. You always match the head, not the block. All the blocks have the same coolant/oil ports on them. That is not the case for the heads. Any of the heads with the water outlet built into the manifold (k20z3/k24a2) need their specific head gasket, this is because the coolant ports on the deck of the head are also in a difference position. These heads also need to be run with the coolant divider in the block. There's a picture floating around showing the difference between a k20a2 vs a k20z3 head and head gasket, I'll try to find it. Match the gasket to the head, with the proper bore.

EDIT: k20z3/k24a2 head gaskets are the same design, k24a2 being bored wider. K20a2/k24a1 are also the same design, k24a1 also being bored wider.
 
I need to find some information on how to tell what head you have. I bought a tsx swaped type-s. Normally I build not buy, but this time I decided it was a good idea. My tsx engine black says k24a2(stamped) and has the oil cooler and so I'm GUESSING it's a frank build. I've searched images and high and low and can't find any determining factors on how to tell what head I have. I've seen some marked RBB(#), and still nobody discussing that knows for sure. Can anyone help?
 
My head says RBB between the cam sensors. Guess I'm working with a full TSX engine. Now to find a k20a2 head and swap it! Whoever did my swap already added the oil cooler, so I'll check for the oil pump swap and then proceed. :vtec:
 
Why add a k20a2 head? A straight k24a2 is great as is. You said tsx leave it. If it's a different k24 like accord or crv go ahead nd swap heads. But tsx strong as is with a good tune. My 06 tsx on rsx . I ripped 2 axles apart clean cut just racing. It already has power. K20 had is similar to k24 06- 08 I believe
 
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