About Wiesco Pistons:

[chdesign]

www.performancecoatings.com that should be the right address also the place i'm getting my header coated my downpipe coated and my turbine housing coated for a nice 190 bucks.

 

[Kooldino]

hey linux to beef up yoru setup and since you need it now....get a set of stock pistons and get the shot peened it will strengthen them quite a bit over stock.

What's "shot peened"?

 

[big_ben]

Very small "shot" is shot at the piston at high speeds in order to strengthen the metal. It's kinda like hitting the metal with a ball peen hammer over and over. Similar to what forging is.

 

[Traveler]

AH! Don't shot peen pistons! You do that to connecting rods not pistons! Shot peening will change the pistons dimensionally and destroy the surface. You shot peen rods for strength.

Reason? If you look at a stock connecting rod, you'll notice that they have some casting flash as well as an unfinished surface except for the machined areas. Shot peening the outer surface of the rods condenses the outer layer of steel and makes it smoother. This keeps the surface from cracking at a thin point of flashing (sometimes called 'stress risers'). Once a small crack is started at one of these, the rod will continue to crack at that point. It sounds strange, but shot peening will usually increase the strength of a stock rod by nearly double. It's a good way to get durability on the cheap. I'm sure that it would work fine up to 270-280 HP, but You'd need the better rods after that. If you have it apart anyway, it might just be better to go with the better rods. If you are doing it yourself and want more strength for not a lot of money, then shot peen the rods.

 

[LinuxRacr]

AH! Don't shot peen pistons! You do that to connecting rods not pistons! Shot peening will change the pistons dimensionally and destroy the surface. You shot peen rods for strength.

Reason? If you look at a stock connecting rod, you'll notice that they have some casting flash as well as an unfinished surface except for the machined areas. Shot peening the outer surface of the rods condenses the outer layer of steel and makes it smoother. This keeps the surface from cracking at a thin point of flashing (sometimes called 'stress risers'). Once a small crack is started at one of these, the rod will continue to crack at that point. It sounds strange, but shot peening will usually increase the strength of a stock rod by nearly double. It's a good way to get durability on the cheap. I'm sure that it would work fine up to 270-280 HP, but You'd need the better rods after that. If you have it apart anyway, it might just be better to go with the better rods. If you are doing it yourself and want more strength for not a lot of money, then shot peen the rods.

Got my Pauter Rods yesterday!(thumb) See corresponding thread.

 

[twilightprotege]

hey

quick question, are our pistons flat top? linux, are you going to ask wiseco for flat top pistons if we dont have them?

later

 

[LinuxRacr]

hey

quick question, are our pistons flat top? linux, are you going to ask wiseco for flat top pistons if we dont have them?

later

Our pistons look like this:

 

[big_ben]

I've decided to bite the bullet and get some forged pistons and forged rods. The only thing is that they aren't going in a MP3. The car I'm getting comes with them standard and with 11.1:1 compression ratio.

 

[Stou]

hummmm....... interesting, any more hint Big_Ben?

 

[chdesign]

Yeha sorry about that don't shotpeen the pistons that had slipped my mind at the time.....I will giv eyou a nice little tid bit though....the stock pistons are cast the 10.7:1 mazdaspeed are hypereuatic.

 

[LinuxRacr]

Here is some interesting reading on Hypereutectic Pistons...

http://www.taperformance.com/hyperteu.htm
http://www.angelfire.com/ar/dw42/tech/hyper.htm
http://www.hotrodders.com/cgibin/ubb/15/000479