Ive heard that D series SRP pistons melt around teh edges at around 20 PSI. Anybody else know ANYTHING about this?

 

pressure doesn't melt piston...heat does.

Heat is caused by poor tuning...enough clues for now

 

What he said.

 

"melt" around the "edges"

possibly from detonation around where they cut the valves and do not radius the edge? i've never seen srp's so i cant give you a definate answer, but its a good guess!

 

I've had it happen to me before. In part to poor tuning at the moment, But the valve reliefs are also very thin. Something you have to worry about.

 

MIraiz and Danl...see what turboteg said..humph!

 

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I don't care what he said....pistons don't "melt" from high PSI. Pistons melt from high temperatures and/or detonation due to poor tuning. You get the car built and tuned right, you can push 20psi moderately on almost any forged pistons.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DIRTY FACE &raquo;</TD></TR><TR><TD CLASS="quote">MIraiz and Danl...see what turboteg said..humph!</TD></TR></TABLE>

Yeah, he said due to poor tuning he melted s***. You can melt/break any piston due to poor tuning.

The high silicone content in SRP's allows you to tighten the piston to cylinder gap reducing that annoying piston slap that a lot of hondas, and especially D series hondas get/have. The turbo pistons have much more material in the valve relief area and this is noted on SRP's site. The turbo pistons for a d16a6 are 8.5:1, plenty of material in the valve relief area.

http://www.zex.com/Community/Gallery/

I think that is "zexman" on this forum. He's running the SRP's.

My friend runs teh SRP's and ran them slightly lean a few times, didn't hurt anything. It also saw some pretty severe (for a honda) detonation during its first fuel management iteration.

 

thanks guys

Going to try them 20 PSI, stock sleeves..

 

Any posting of those sleeves?

20 psi on a t-25 with race gas might not be such a big deal.

20psi on a 60-1 would put you well above 300whp, and even with no detonation and moderate RPM's with the notorious rod/stroke ratio of the d16, your probably going to run into problems. I don't think the pistons are your limiting factor here, if SRP's can even be considered a limiting factor.

If all you want to do is boost high, then buy my car. I can run 25 psi all day long on pump gas and make relativley little power reliably.