? on which piston to go with
I used a stock b18c1 and with srp 9.5:1 and its supercharged on spray compressing it through the charger, ticking noise after 10 passes on a 30 dry shot pulled apart motor after it blew a head gasket and the sleeve was cracked from the top of deck 3.in. down and the block broke. Every piston by the valve reliefs on the intake side were lifted but no rings were butted. Would the cp-sc7012 or the JE 242879 piston be better than the srp? or who knows of a better piston to go with, with a c.r 9.0-9.2 with a 83mm bore. looking to spray a lot more then just a 30 shot,
The alloy used in the CP and JE is a little tougher than the SRP.But it doesn't sound like that was your problem.The engine was detonating.You need to be a lot more conservative with your tune.
CP's here. After I tore down my last motor with 26k miles of abuse on it and it still looked minty fresh, I will never run anything else, regardless how well anything else works. I will stick with what I know works flawlessly.
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Regardless of your piston choice you’re going to have the same problem. You said your app is supercharged? I'm guessing you’re using an FMU to raise fuel pressure (uses vacuum to raise fuel for boost). If that is the case running a dry nitrous shot isn't going to work (also uses vacuum to raise fuel pressure). You’re going to need to use a wet shot for the nitrous or take control of the way your fueling for boost from the supercharger (I.E. stand alone). After you address this issue (the reason for detonating) go with JE, CP, or Wiesco pistons. All are really good right off the shelf!
I was surprised to see the ring land to lift, it was 11.5s on the spray tune up pulling 11 degrees on 12 lbs of boost, but it could be the junk srps
i have used all the above, and had great results with all of them.
but i choose to run arias pistons. great service, quality parts, proven performance.
but i choose to run arias pistons. great service, quality parts, proven performance.
Honda-Tech Member
Joined: Aug 2004
Posts: 442
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From: east coast performance and tuning, jacksonville, nc
sound like your tune. i seen a lot of nitrous car lift ringlands. fuel is is getting under the ring and igniting causing them to lift, but ive used all makes of pistons and wiseco for me.
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