I was curious if anyone else had heard about this. Someone else is making them as well. Im waiting to talk to JE for confirmation.

 

that would be nice. keep us updated.

 

no updates on this yet?

 

if you don't sleeve it isn't the block weaker?

 

edit:

Sleeve your block sucka!


Modified by GudeH23a at 2:02 AM 10/4/2003

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GudeH23a &raquo;</TD></TR><TR><TD CLASS="quote">Where did you hear this rumor from? Up till now, wiseco are the only pistons that you can run in the stock H series cylinders. I guess JE finally realized there is a large market for people wanting to take the cheap route out in building a motor </TD></TR></TABLE>

Whats the difference between the wiseco pistons that require no sleeving, and any other pistion, say, eagle?

 

I believe the piston or piston rings have some sort of special coating

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GudeH23a &raquo;</TD></TR><TR><TD CLASS="quote">Where did you hear this rumor from? Up till now, wiseco are the only pistons that you can run in the stock H series cylinders. I guess JE finally realized there is a large market for people wanting to take the cheap route out in building a motor </TD></TR></TABLE>

well the wiesco's were bs, look here:
https://honda-tech.com/zero...age=1

from page 5-

"Hey guys, long time no see. I am currently removing foot from mouth. And head from ***. But, I proved wiseco wrong. I can look at it good one way. Humble pie is very good. Ok, here is what happened. From the looks of it, severe sideloading, h22 problem from what I understand from carey bales. But it should only happen on one side of the piston. Scoring on both sides, with some severe weardown above the top ring on I think it was the intake side of the piston. I will be getting pics up. Now, all this never showed any metal, and the rings and oil rings do not have any grooves. The walls showed scoring on both thrust sides, but no excess oil travel. Like I said, pics are coming. I don't know how much this was affecting the output of the motor, but like I said, it still ran 14's.

Mike"

 

Hallelujah the truth comes out!

I knew this frm forged piston deal was too good to be true. Hopefully he will take pictures so we can all showboat them to all the people who "know more then us."

As I stated in a thread a few days ago, you hear about the guys running the pistons with zero problems... But what happens to them 2,000 miles later down the road?

I give this guy Mike props though, he was honest with what happened and openly shared it with us while admitting his fault

 

hey man i have over 15k miles on my motor...in that same subject the guy said he took a look at the sleeves and they didnt look any different than when he first took the motor apart to install the wiseco pistons

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GudeH23a &raquo;</TD></TR><TR><TD CLASS="quote">Hallelujah the truth comes out!

I knew this frm forged piston deal was too good to be true. Hopefully he will take pictures so we can all showboat them to all the people who "know more then us."

As I stated in a thread a few days ago, you hear about the guys running the pistons with zero problems... But what happens to them 2,000 miles later down the road?

I give this guy Mike props though, he was honest with what happened and openly shared it with us while admitting his fault </TD></TR></TABLE>

w3rd

 

"I was looking at my cylinder walls again, and actually, they don't look much different than when the block first came apart to take the stock pistons out. I was comparing the block to pics from my first disassembly, before I put the wiseco's in. I think the pistons took the worst of the beating, and that they would still work just fine. I am going to send them to wiseco to get their opinion.

Mike"

from that same post

 

The JE you speak of are made of a different alloy compatible with FRM.....they arent coated......

 

i am almost positive that SR20DET's also have FRM lining... those guys use all the pistons and i never heard them complain. Whats the problem anyway? Isnt the FRM just a nickasil coating on the cylinder wall?

My H22 is sleeved none the less... but i dont understand what exactly is supposed to cause the problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mister2racer &raquo;</TD></TR><TR><TD CLASS="quote">Isnt the FRM just a nickasil coating on the cylinder wall?</TD></TR></TABLE>

FRM is not nikasil, it's about as simple as that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mister2racer &raquo;</TD></TR><TR><TD CLASS="quote">My H22 is sleeved none the less... but i dont understand what exactly is supposed to cause the problem.</TD></TR></TABLE>
As far as anyone can figure, it's a combination of things - here's my take on it:

First, the FRM lining is aluminum based - so aluminum pistons making contact doesn't end happily. And second, forged pistons are installed at different (looser) clearances to account for their larger expansion rate. So before they're warmed up, they rock back & forth in the cylinder slightly - which means piston/cylinder contact is pretty much inevitable, no matter how well they're installed.

I think the only real "solution" (besides resleeving, obviously), is to go the S2k/NSX oem route & use a super-high silicon content forged coated piston. But then, the more you pump up the amount of silicon in the alloy, the more brittle they are.