Greg, it's important to distinguish fact from opinion. I do agree with most of your assertions/advice, however.

 

I'm not discussing hearsay, I've ran these products.

Yes, there's SOME piston slap with all pistons, this is true, but rarely an audible amount. I NEVER said that they couldn't make high hp, that has nothing to do with it. I've used them in 200hp per liter builds N/A even with great success, I'm not doubting their ability to withstand forces.

 

Perhaps but really only results can accomplish that. Difficult on these matters.


As for me being in error, have a look at the squirter thread, mistook someones post for a random personal attack when he was actually attacking the person I was arguing with. Mistakes are made by all, myself included. ooooops!

 

I'm not discussing hearsay, I've ran these products.

Yes, there's SOME piston slap with all pistons, this is true, but rarely an audible amount. I NEVER said that they couldn't make high hp, that has nothing to do with it. I've used them in 200hp per liter builds N/A even with great success, I'm not doubting their ability to withstand forces.
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Dude you called there stuff junk usually that relates to a person experienceing part failure. If your gunna complain about alittle piston slap til a engine warms up then you should be driving a Prius not even be on a forced induction s2000 forums. Seriously who cares about if they make a little noise it dosent make them junk, there all made of relatively the same material I guess your cp pistons are junk aswell cause they expand

 

I'm not discussing hearsay, I've ran these products.

Yes, there's SOME piston slap with all pistons, this is true, but rarely an audible amount. I NEVER said that they couldn't make high hp, that has nothing to do with it. I've used them in 200hp per liter builds N/A even with great success, I'm not doubting their ability to withstand forces.
[/quote]
Dude you called there stuff junk usually that relates to a person experienceing part failure. If your gunna complain about alittle piston slap til a engine warms up then you should be driving a Prius not even be on a forced induction s2000 forums. Seriously who cares about if they make a little noise it dosent make them junk, there all made of relatively the same material I guess your cp pistons are junk aswell cause they expand
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I also said I've used it over and over and still do. You missed the point of what my complaint was with them and WHY it's a complaint.

I shouldn't have said "junk" rather should have said "inferior" to some other options for this particular application.

A daily driven car should be able to be fired up and driven away on a cold morning without damage being done to it, at least in terms of just general driving speeds. I live 300yds from a freeway onramp, I want to be able to fire my car up, put it in gear and drive 15 seconds to the freeway and get on it without hearing the rattling go nuts in the motor until it warms up a little, I don't want to have to sit and hear that and think about the damage being done because I'm in a hurry and don't have time to sit around and wait. Especially a problem in cold climates. In Cali here I don't have much of a problem with it, yet I'm born in Alaska...it's a huge problem there and where I'm moving in 20 days (Seattle) it'll be somewhat more of a problem than in Cali. I don't mind my race bikes or a dedicated race car having to sit a few minutes to warm up before moving it, I expect that and it's fine.

The noise isn't the problem, the REASON noise is being made is the problem. That piston slap does a lot of wear on the cylinder walls (causing oval wear), as well as to the pistons and probably to the wrist pins to a lesser degree.

CP pistons expand FAR less. That's the point. All metal expands, though expansion figure depends on more than just the material alone, the way it's forged as well as the shape affect things too.

Now as for me being on the FI forums vs driving a Prius, I think you're best to keep your comments to yourself. I could bet a MILLION DOLLARS you run wiseco pistons so you're taking this personally and defending what you run for no other reason other than it's what you're running. So are you running wiseco just by complete coincidence????

 

This will be my last post for sake of trying to keep the op's thread on topic and away from all this he said she said stuff. Let's be honest most people running built motor s2000s don't daily drive them and are usually there weekend warriors. Once my motors running I have no problems posting cold start videos showing how a correctly built motor with wiesco pistons sounds on a cold startup. Like I said before regardless ALL built motors have piston slap if you have a competent engine builder or know how to build an engine correctly its really not such an issue as your making it. I originally stated I'm running wiesco's and the only reason I even commented is because your making false allegations against companies calling there product junk. I've seen you in almost every thread in the FI section and your always stirring the pot somehow and putting in your "opinion" in everywhere and defending what you think to the end. As someone said before state fact instead of opinion on here you may actually contribute to this forum.

 

Really, most don't daily them? I'm actually not sure I'd agree, I think MOST are driven as regular street cars actually. Daily or every other day is the same thing in this case, it's "get in and go" factor.

Well I've seen probably hundreds of wiseco piston equipped motors have the same slap from race engine builders for FACTORY teams and they admit it as a fact of life.

I wouldn't have anything to say on matters if I didn't have some experience myself in dealing with the issue. So the above stuff I stated is FACT on the matter. Opinion would be "why" it happens, we can speculate all day. Bottom line is in at least SOME motors they slap around till warm due to the fact they expand a lot. I've not rebuilt EVERY motor on the planet to say they do or don't do it on every motor so I can't speak about that.