calib17a

I don't want to just get on any bandwagon just because they're using them or selling them. What makes one piston better than the other? I don't want to compare appearances either because that's not a good indicator of what's better. So I'm posting some of the most popular piston's features to compare. This is to help all of us make an educated choice. Feel free to add features of your favorite pistons.

<U>Pistons</U>

CP features:

*High strength aluminum forgings
*Super lightweight designs
*Fully CNC machined and balanced +/- 1 gram
*Wrist pins included
*Accumulator groove included
*Double pin oilers, force fed from oil ring
*Pick lock grooves for easy removal

Arias features:

*Hi-tensile forged, not cast, billet material.
*CNC machined working surfaces.
*Optimized crowns for efficient combustion
*Diamond-turned ellipsoidal skirt profile.
*Lightweight, high strength construction

*Forged pistons.
*Wrist pins: high carbon, case-hardened.
*Ring set: chrome or moly faced top, cast 2nd, 3-piece oil.
*Locks: carbon steel wire or spiral.

JE pistons:

*Forged from premium 2618 aluminum alloy
*Dome and dishes feature smooth flowing radii for excellent flame travel
*CNC machined side relief with lower support band provides for optimal strength
*CNC diamond turned skirts with reduced cylinder contact profiles provide less cylinder friction for increased horspower
*Forced pin oilers for increased wrist pin lubrication
*Pin fittings, pin oilers, and wire locks included
*Rings sold seperately

SRP (JE off the shelf):

*Dome requires no deburring or preparation
*Forged from 4032 low expansion high silicon aluminum alloy heat treated to SRP specifications
*Dome and dishes feature smooth flowing radii for excellent flame travel
*.827 x .2250 - 150 straight wall wrist pin included
*Pin fitting and spiro locks included
*CNC machined ring grooves accept 1.0, 1.2, 2.8mm rings (Rings sold separately)

Modified by calib17a at 2:38 AM 6/3/2004


Modified by calib17a at 2:40 AM 6/3/2004

MiraiZ

you're never gonna get a straight answer. everyone has a preference and will give you different answers. Choose the one you feel is the best.


Looks as sif you've answered your own question anyways.

earl

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by calib17a &raquo;</TD></TR><TR><TD CLASS="quote">What makes one piston better than the other? I don't want to compare appearances either because that's not a good indicator of what's better.</TD></TR></TABLE>Absolutely correct. You can't look at a piston and tell much of anything. One of the most important factors is ring land flatness. You can lose ring seal between the ring and land just as quick as between the ring and the cylinder wall. There are only two high dollar laser measurement tools located in the USA. One is on the east coast and the other is in Irvine, CA. This machine actually fits in the ring groove and takes millions of measurements INSIDE the groove.

G"UNIT

i have cp pistons. i havent put them in yet. there an 81mm bore. 9.8:1.. i might sale them and get a bigger bore...

TurboBumblBee

i have CP 9:1 84mm compression pistons in my aebs sleeved motor.. i went w/ CP pistons because that is what my engine builder recommended and could get for me..

tegmech

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by earl &raquo;</TD></TR><TR><TD CLASS="quote">Absolutely correct. You can't look at a piston and tell much of anything. One of the most important factors is ring land flatness. You can lose ring seal between the ring and land just as quick as between the ring and the cylinder wall. There are only two high dollar laser measurement tools located in the USA. One is on the east coast and the other is in Irvine, CA. This machine actually fits in the ring groove and takes millions of measurements INSIDE the groove. </TD></TR></TABLE>

What companies use this measurement tool?

System-7

CP here. i have heard great success.

vaporboy12

i use wisco and havent had a problem yet

calib17a

Earl when doing a build what do you to prep the CP pistons? Do you have to deburr them and round out the sharp edges such as the valve reliefs?

blackANESE

iTrader: (2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vaporboy12 &raquo;</TD></TR><TR><TD CLASS="quote">i use wisco and havent had a problem yet</TD></TR></TABLE>