Which would be a better setup for a d series. SRP, JE, Wiseco, or CP. I want to turbo @ about 14-16 psi. Will be Hondata tuned.

 

Wiseco is my choice.

 

i'm running nearly 20 psi on my SRP's. great deal for pistons. nothing like a nice set of wiseco's though. for the money, SRP's are all i needed though

 

I was just curious if you could tell me why. This is my first engine build and I dont want some phony, silicon filled, junk piston.

 

redzcstandardhatch,

What piston to wall clearance are you running on yur SRP's. I heard that some builders like to give it a little more clearance to compensate for the high expansion of SRP's

 

The SRPs don't have a higher expansion, I am pretty sure i just read this. The JE's have the higher thermal expansion rate. Let me find the site again. I would say there is nothing wrong with a nice set of SRPs on a D.

http://www.jepistons.com/pdf/2005-sportcomp1.pdf

Thanks BW for the link.

The JEs have a 15% more thermal expansion rate over the SRPs, that is some of what causes piston slap during warm up, and the bigger clearances.

Also the biggest thing I see between the two are the densities and the strength tests of each pistons.

 

the SRP's have a high silicone content. wich will allow a more tighter clearance on the motor, wich means they do NOT expand much

i have them and they have worked great for me
1.5 years of daily 11 psi abuse and many spikes and they still rock as new

 

wiseco

 

my piston to wall clearance was a bit on the high side, cant remember the exact numbers. i think it was the highest it could be and still be in spec for OEM's..

they make no piston slap noise or anything, especially when warm. perfect compression across the board too, and i've RAPED them so far. 2500ish miles on them.

my tune is VERY rich and VERY conservative though. i dont have time to swap engines more than once a year. i plan on running this engine a LONG time, and run at least low 12's, high 11's with it. right now its running high 12's at about 15 psi. i'm working on a better turbo setup this winter.

nothing wrong with SRP's for the money, but if you really want more, go with wiseco's, CP's, or JE's.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redzcstandardhatch &raquo;</TD></TR><TR><TD CLASS="quote">i'm running nearly 20 psi on my SRP's. great deal for pistons. nothing like a nice set of wiseco's though. for the money, SRP's are all i needed though</TD></TR></TABLE>

SRP's are all that are needed for your app. They are proven to hold 400+whp reliably.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redzcstandardhatch &raquo;</TD></TR><TR><TD CLASS="quote">my piston to wall clearance was a bit on the high side, cant remember the exact numbers. i think it was the highest it could be and still be in spec for OEM's.. </TD></TR></TABLE>

You don't have to be within OEM specs if you're using aftermarket pistons. You have to go by the aftermarket manufacturer's specs.

 

yeah, i knew that at the time. they were within those specs i believe. i might be wrong about the OEM spec number, it was a few months ago, and i look at numbers all day! haha

i love my SRP's. for a stock sleeve D16a6, they were MORE than enough. i plan on running about 350-375 whp next year if i have a few more dollars come my way i can alot to a new turbo.

 

SRPs are JEs right? Same thing made by the same company right?

 

same parent company, different material in the piston.

both forged pistons, diff. silicone content.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muckman &raquo;</TD></TR><TR><TD CLASS="quote">SRPs are JEs right? Same thing made by the same company right?</TD></TR></TABLE>

That is correct. SRP's though have a higher silicon content and are off the shelf pistons. JE's have lower silicon content and I believe are custom ordered and not off the shelf.


Modified by RyanCivic2000 at 6:26 PM 11/29/2005

 

how do they compare to CP?

 

do the srp pistons have a floating wrist pin design??

 

yup, w/ the spiro-loc things. easy to install

 

good deal i think i am ordering a set tonight!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 96SCd16 &raquo;</TD></TR><TR><TD CLASS="quote">Which would be a better setup for a d series. SRP, JE, Wiseco, or CP. I want to turbo @ about 14-16 psi. Will be Hondata tuned.</TD></TR></TABLE>

Only 14-16 pounds.. Why not 30+psi.. Or how about being low about it and only run 11psi from a T4..

Lesson, PSI MEANS NOTHING ITS THE HORSEPOWER THAT YOUR BUILDING THE ENGINE FOR..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanCivic2000 &raquo;</TD></TR><TR><TD CLASS="quote">

That is correct. SRP's though have a lower silicon content and are off the shelf pistons. JE's have higher silicon content and I believe are custom ordered and not off the shelf.</TD></TR></TABLE><TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by USDM 4G VTEC &raquo;</TD></TR><TR><TD CLASS="quote">the SRP's have a high silicone content. wich will allow a more tighter clearance on the motor, wich means they do NOT expand much i have them and they have worked great for me
1.5 years of daily 11 psi abuse and many spikes and they still rock as new</TD></TR></TABLE>Which one of you guys are right?????

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tgreaves &raquo;</TD></TR><TR><TD CLASS="quote">

Only 14-16 pounds.. Why not 30+psi.. Or how about being low about it and only run 11psi from a T4..

Lesson, PSI MEANS NOTHING ITS THE HORSEPOWER THAT YOUR BUILDING THE ENGINE FOR..</TD></TR></TABLE>About 250-300whp Is that better for you?

 

t3/t4 turbo
Hondata s200 boost op.
550cc injectors.

Converting from supercharged to turbocharged, So I know a little about boost and horsepower tough guy

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 96SCd16 &raquo;</TD></TR><TR><TD CLASS="quote">
Which one of you guys are right?????</TD></TR></TABLE>

Actually he was right. In my original post I had mistakenly swapped high and low silicon content.

SRP = high silicon content
JE = low silicon content

It was merely a typo on my behalf. I'm editing my original post.

Here is a good read-up on silicon content in pistons. https://honda-tech.com/zerothread?id=533078

 

Check out the link I posted way up there. Answers everyones questions and is right from JE.