Anyone Running Supertech Pistons?

[maximajim]

I installed these last year in my RB25 and I recently found they have lopped off my oil squirters.

Supertech says this is the first time they've heard of the issue. However you are never going to notice a problem unless you check your high RPM oil pressure or do a very close examination of your oil during an oil change.

Here they are

The only one that wasn't damaged was #6 which I had broken the guide pin during installation and then had to eye ball alignment.

[Beer Baron]

that sucks. they may just need spacing out to clear where ever they are hitting, or you may (bigger?) cut outs in the piston skirts to clear them. but cutting into the skirts after finishing is not ideal. it's better if you can adjust the position of the squirters a bit. just depends how much interference there is between the two and the skirt design, skirt length etc. got any pics of the pistons?

[maximajim]

I've already blocked the squirters as I've already been without their aid for 8 months now with no problems. I had my engine previously balanced and didn't want to touch the pistons again.

A spacer may put the squirter bolt head in the path of the counter weight. Though you maybe be able to remove the aligment pin and adjust the squirter for more clearance. Which is what happened to the #6 squirter unintentionally and it happens to be the only one untouched.

Here is the pic of one of the pistons before installation:

[The Mafia]

I've got a set of squirters if you want to buy them.

Are they coated?

[D_Stirls]

i have just sent them an email asking about oil squirter clearance for CA pistons. On the RHS of the closest piston skirt is that the oil squirter clearance?

[GTScotT]

you should claim compensation regardless of if the motors been running fine or not.

[johnnyt]

I used supertech in my first rb26 build.. had no clearance issues with the squirters.

shame no 6 cracked half the ringland off:)

Edited January 22, 2010 by johnnyt

[proengines]

you should claim compensation regardless of if the motors been running fine or not.

Why would you claim compensation? It's the assemblers responsibility to make sure nothing hits anything else. Think of it as a learning experience.

There's enough room to space down the squirters or you can grind the locating lug a little to rotate them where you want them to sit.

[maximajim]

I did check for clearance while cranked the engine over by hand. There seemed to be enough clearance then. Now I know while the engine running the clearances will change. This is a design fault, it's not like it's a custom piston.

Anyway I sent supertech pictures and they agree they need a look over.

" from Martin Tagliavini <martin@supertechperformance.com>

to Leon A <@gmail.com>

date Thu, Jan 21, 2010 at 1:20 PM

subject RE: supertechperformance.com - Contact Form

hide details 1:20 PM (17 hours ago)

Thank you Leon

From the photos seems that the cut needs to be deeper. I will ask our factory to check on the OE sample we have and see what is going on.

Martin T.

Supertech Inc.

3580 Charter Park Dr, San Jose CA 95136

Ph. 408-448-2001 / Fx 408-448-3700

www.supertechperformance.com"

Edited January 22, 2010 by maximajim