solo227

I dont know if they are even being sold anymore... Unless NPR is the same company...

GEN2 LS

iTrader: (3)

bump anyone had any problems out of their nippons yet that's making over 300whp?

Ls_dx

iTrader: (5)

ANy updates?

hatch34

damn thats some big power for cast pistons and stock sleeves on pump gas

QUICK8CIVIC

I'd love to see a video of the car on the dyno..

crazyassbill

I have these pistons in my poor mans type r, at 16 psi right now on a holset hd351cw

nsxmatt

I don't understand the point of doing all the work and expense of machine work, rods, bearings, gaskets, and skimping on the pistons. I'm glad they do seem to work, but i'd rather spend a extra $200 for a proven 1000+whp piston if going through all the work.

turbo-2nr

^x2 and i dont under stand why you would do all this to make ~500whp we have quite a few bseries making more than that and there 100% stock short blocks
just find a good tuner

GEN2 LS

iTrader: (3)

chiming in, 1 year later and my nippon racing CTR replicas are still kicking 235psi across the board, dyno numbers in sig, high boost and 400+hp coming soon!

01typerboi

Hmm interesting. Good stuff

JDM Integra-R

Is Nipon still good?
Any fresh news?
Many are using these pistons now?

trickeng

We use them all the time. They are kickass pistons as long as your using them within there hp rating of 500hp.

JDM Integra-R

I use CP on my engine, now the power is 430 horsepower at 1 bar. boost.
I build a spare engine for everyday use, like a family car, I don’t want big P2Ws anymore. but I would like to leave the former power.
Can these pistons survive when the EGT exceeds 900 degrees Celsius?

trickeng

Um?? That would depend on what your cylinder temps are!! Exhaust temps give you good data but there is a reason exhaust components are made from steel and the head/piston is made from alum.

900c exceeds the 700c'ish melting point of alum so not really a number that matters considering i can turn a steel exh manifold cherry red without making much hp.

JDM Integra-R

Okay, put the question differently.
What usually do you see EGT at maximum load of their engines?
I want to know some statistics about those engines that are built with NIPON pistons.

eg6noise

Any experience with their other higher compression pistons? I would like to go with a P30 or P73-00 style as I'll be running E85 and a little bit more compression (10.6:1) doesn´t hurt. The engine will be rebuilt and won't see more than 300whp. Are stock rods with ARP bolts fine or Eagle/Scat/Manley rods are highly recommended?

trickeng

They are made from the same material and treated with the same coatings. So that would be fine to raise the compression with those Pistons on e85. Absolutely use a forged h-beam rod and not an oem rod. We use scat rods.

eg6noise

Thank you, that's good to hear. I'm not sure I can post links here, but where would be the best place to get them? eBay? I forgot to say, the engine is a B16, even with the rods being the strongest from the B-Series, I guess the recommendation still stands? With a set of Scat rods, what would be the recommended power level with those pistons and stock sleeves? ~350whp?

trickeng

Jesse @ JapanRacingProducts/NipponRacing is the man with the goods. He is the exclusive importer of NipponRacing Products and a Scat distributor. uyunisales@msn.com

There is no max power level. Seen rods break at 300 and seen them live "for a while" at 500... How much of your money do yo want to gamble with??