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tempo_1
01-03-2009, 01:47 AM
Anyone heard of NPR or Nippon Piston Ring pistons? Any good? Looking at cheap cast pistons to get a H22A running.
B20NA
02-03-2009, 07:53 PM
yes these can be bought in the USA through ebay, also you can purchase YCP pistons, there very similar
saikou27
04-06-2009, 10:57 AM
npr pistons and rings are used by heaps of people in the us. although my experience with them are on d series engines, i can tell u that they're quite good and im yet to come across anybody who has encountered problems using them
fatboyz39
04-06-2009, 04:55 PM
There fine. Cheap and works well.
saikou27
04-06-2009, 05:44 PM
yes these can be bought in the USA through ebay, also you can purchase YCP pistons, there very similar

are the ycp pistons better?
VTECnique
04-06-2009, 06:28 PM
YCP pistons are made from a much more strong cast (AC8a Grade)
-T-6 Heat treated for even greater strength.
-Highly resistant to heat.
-Dual oil holes to provide better Wrist Pin Lubrication.
-Teflon coating to provide smoother running, increase piston life,
improve cylinder sealing for less blow by and more power, reduce
friction.
-Help prevent damage from inadequate lubrication, Especially
during cold start-ups

Courtesy of fjdistributors.com
B20NA
04-06-2009, 11:14 PM
ycp pistons are definately better, due to material and teflon coating
sPoOnD_
29-06-2009, 03:41 AM
would u recommend npr pistons in a b18c?
saikou27
29-06-2009, 05:53 PM
not unless ur doing major engine work and need the extra compression
sPoOnD_
29-06-2009, 08:21 PM
just rebuilding my bottom end...
saikou27
29-06-2009, 09:18 PM
yeah why not. preferably ycp's but npr is good too.
sPoOnD_
10-07-2009, 07:54 PM
my motors almost ready to go in, but i was wondering, do i really need a VAFCII with these pistons? everything else is standard
B18cEG
11-07-2009, 04:09 AM
NRP are actually the japanese made ones unlike the YCP pistons ;)
11.1:1cr with this combo, note that this is being run off a b16a ecu.
EG30
11-07-2009, 08:51 PM
my motors almost ready to go in, but i was wondering, do i really need a VAFCII with these pistons? everything else is standard

at the very least VAFC tuned by a good honda tuner, esp now that you are spending the bucks building a motor with type R CR, if budget allows pwr fc is much better still but at least the VAFC would get your motor running safely.

just slapping an engine in with a stock ECU not even suited to your motor is very common WA ricer way of life, it's good to break that tradition LOL.