Hey guys. I am about 90% on my "Poorman's Type R" motor. The reason I have it in parenthesis is because I know it's not a true poorman's setup. I am hung up on what pistons to use. Everything is fresh from the machine shop. I am using all OEM parts for this build. Here is my setup as current:

Head:
-'89 B16A (SiR)
-5-angle valve job
-Ported out intake-side
-Port-matched B16A2 intake manifold to head
-PasswordJDM intake gasket port-matched to head and manifold
-milled .001 to bump up compression
-'98 GSR cams

Block:
-'94 B18C1 (GSR)
-reground crank
-Civic Type R crank pulley
-stock rods
-bored to 82mm


Since I am using the stock PCV breather box, I am a little hesitant to go too high with the C/R. I have heard that if I bump it up too high, it will cause detonation in the motor with the factory breather being used. I have no interest in buying the Endyn kit. Yes, I'm sure it's superior. Now, I know that the UDSM A0 ITR pistons will yield lower compression than B16 pistons. But would you all agree that it would be the logical choice for a reliably running motor? The pistons are all I have left to buy. I'm also curious on how much power this setup will put to the wheels.


Modified by SolAssassin at 12:57 PM 6/26/2007

 

Reliability has nothing to do with you running a ctr piston or an ls piston. Your compression ratio also has nothing to do with reliability.

Reliability revolves around assembly & tuning.

My advice, stay at 11.5-12.0:1 on a 1.8L daily driven application.
Get your self some valve train & cams. Do not overcam your setup...

If you bored your setup out to 82mm, you can't use oem pistons. Oem pistons only come in 81mm and 81.25mm

 

I can use NPR ITR pistons that are available in 82mm. So they are aftermarket but they are still to "OEM" specs. The same goes with P30 or PR3 pistons. I don't want to go crazy wih the valvetrain, what's in there will be suffice. The trick for me is to make decent power with the OEM cams.

 

i am doing a similar build with my motor i have a b16a2 head on a gsr block, the block is micro polished balanced and blueprinted, with a knife edge crank that is al so polished and balanced. i went with the p30 pistons, however i havent even got my motor back in the car yet i should have it in by tonight so i can repost and tell you how it runs