floating piston instead of press fit?

[idt512]

Anyone convert to a floating type wrist pin to piston design instead of sticking with the press fit design? If so, what brand pistons are available?

 

[hopwoodp]

Floating wrist pins come on most aftermarket pistons. Some other engines like SR20's come with them. But, the only issue with those are they rod knock if you don't change your oil like you should or if you get contamination through the rod to the piston. But, its up to you. They are easier to take apart than press fit wrist pins. Just make sure to keep you oil clean.

For brands, there are many. Some Dsm engine builders prefer Ross while some may like wiseco. Its depends on what you like. Go to Slowboy's or extemepsi's web site and look for pistons that apply to you application.

Now, for the whole converting press fit to float type wrist pins - its a big waste of time and money. To machine grooves for snap rings and all that just buy some aftermarket pistons and your good.

But, if you are looking for under 400hp then just use stock mitsubishi pistons.

 

[idt512]

For brand of pistons, i meant which are readily available off the shelf with a floating design for the 4G63. Im not looking into modifying the stock piston for the conversion. Perhaps a hybrid of another manufacturer's piston combined with the Mitsu rods, aftermarket, or even another manufacturer's rod.

 

[hopwoodp]

I said Ross and wiseco. I also mentioned to look at the two websites and see what pistons fit your applcation. Being that you are in riverside, drive to Road Race Engineering and pick some up if you don't want to order any.

Also, when you said "Did anyone convert to floating type wrist pins?" I figured you knew that
most aftermarket pistons are the float type. But, I guess you didn't. Thats why I said it doesn't make sense to convert your pistons to float type(than just change pistons with float type pins).

 

[JamiesTSI]

Yes, you can machine the stock rod to work with float type pistons. Make sure to have your machinest drill an oil hole in the top of the rod. They will also need the wrist pin from the piston manufacture to properly bore the small end on the rod. The rod should also be bushed but does not have to be. No bushing just means sooner engine rebuild. Good luck.

I run stock rods with wiseco pistons.

 

[Cs4g63]

Do some research on these sites. They should answer your questions.
http://www.slowboyracing.com/shop.p...28&PHPSESSID=fc3044921350880244993b9715c42d93
http://www.rosspistons.com/auto_stocking_pistons_detail.php?cat=71&item=52
http://www.wiseco.com/Catalogs/Automobile.aspx

 

[bullettdsm]

Yes, you can machine the stock rod to work with float type pistons. Make sure to have your machinest drill an oil hole in the top of the rod. They will also need the wrist pin from the piston manufacture to properly bore the small end on the rod. The rod should also be bushed but does not have to be. No bushing just means sooner engine rebuild. Good luck.

I run stock rods with wiseco pistons.

Yup, I did it with my press fit JE's.

MB

 

[hopwoodp]

Yup, I did it with my press fit JE's.

MB

JE's are press fit? How do you like that setup? Did you have any kind of work done to your rods like, shot peen or cryo treating?