Thread: 53J 1R McRib USDM sr20de

Boost is fine on a 10:1 with flat top pistons. Just ask me I have one on 18lbs with a t-25. There were only two issues.
1) a little bit of detonation (that was taken care of)
2) blown out spark plugs (msd and .028 gap are your friend)
Other than that I have had no problems and this car moves very very quickly.

Also I have a feeling the cams are not bigger. I've got like 4 sets of cams if anyone has micrometer in Fl to measure I'll be glad to. The original cams are not in the motor anymore nor is the original head. It's been changed twice but the bottom end still looks fantastic.

^Glad to hear. This is all I was trying to point out earlier. At the end of the day, it's still an SR20!

I was thinking of getting a red top lowport 10:1 and getting rid of my current RR SR.

I dunno this thing is still running strong.

wow so who ever says these things dont boost like A 9.5:1 just got a proven fact they do and i beat they run harder to.

the red top uk motors a good put i think that u pay to much for them i got my high compresion j spec for $400 the uk one goes for like $700. for that price u can get vvl head.

You get a red valve cover not a vvl head:o

I can assert confidently about the cam profile. I had one and it looked bigger but my digital caliper was busted and I never got a pic. I have confirmed from enough informal sources to believe this for at least the UK motors most likely the JDMs as well.



I have asked for this a few times in the past. No incontrovertible evidence just yet.

Dont know what you mean by that. But, what i was trying to say is instead of spending 700 plus on the high comp uk motor spend that money on a vvl head and reuse your block. You may spend a little more but you will have a better motor.