Melted pistons pics

[redline8k]

Silvino, what do you mean JRCIVIC and others are developing a fuel replacement to be safer and gain power? Is it just to have more fuel that is nessary, or not to run so lean?
thanks for the insite
nick

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95 GSR 4-DR w/minor bolt-on looking for boost!

[Silvino]

I was thinking a bit more about why my pistons looked hammered for longer than that run and I forgot that I had been runing the car lean for a LONG time even at 6 PSI. Remember that my wiring that a local shop said was ok, wasn't. That caused the car to be hammered without enough fuel for a LONG time. That probably is what damaged the engine overall. The run that melted the pistons was a combination of too much timing, running too many hard runs back to back and the biggest factor, leaning out at a high gear in a high RPM. All those things combined killed me. Take away the improper wiring/fuel issues and I'd probably have a smooth running car still. The current idea of 255lph HP pump and stock injectors kinda works but not safe enough for me to reccomend it anymore. I say go with a Bosche pump (it can give you that high VOLUME), new injectors and the cartech FPR that JRCIVIC/RJAFFEY/LUN have been looking into. That's the right way to do it. The costs for my rebuild are begining to scare me. 5k goes right out the door real fast if you want to do things nicely. For this much money I should have saved for a used Supra and upgraded it, hehe.


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Silvino Orozco http://www.geocities.com/silvino_orozco 221HP/161TQ at the wheels - corrected)
'97 Integra GS-R (13 degrees timing) w/JRSC (8 PSI), DC 4-2-1 Ceramic Headers, Walboro 255lph High pressure fuel pump , AEM Cold air intake, Powerstop rotors/Axxis Metal Master brake pads, A'PEXi Dunk Exhaust, J&S Safeguard unit,NeuSpeed rear Swaybar, Eibach Springs, Clutch Masters Stage III clutch (not in dyno run), AEM cam gears (installing soon), Energy Suspension motor mounts (not in dyno run), MSD 6BTM (set to .5 timing removed per lbs of boost), MSD Blaster Coil SS

[GSRMatt]

The problem here is fuel pressure. I would consider injectors mandatory with anything but the standard, stock JRSC setup. One dip in voltage to the pump or a quick burp if the fuel sloshes will kill your motor in a hurry with the pump working that hard. An inline pump could work as a bandaid if you have problems tuning the larger injectors to run well at part throttle/idle. The FMU helps you keep stock driveability off WOT, but is very taxing on the fuel system components. A lot of you are investing in ignition gizmos to prevent detonation, but you would be better off running a lot more fuel with conservative timing.

Good luck with your motor. Unless you really want to go big with a power adder (and I don't think the JRSC is the right path for that) I'd be tempted to pick up a used shortblock, or do a stock rebuild, and fix the tuning issues.