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Old 12-22-2007, 07:56 PM   #1
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Default Pinching a motor.Who do you use?. What are the PRO ancd CONS.

I have a few motors that need to be pinched.

Who do you guys use?

What are the Pros and Cons to pinching a motor?

How long does a pinch last?

Do you need to go through the same break in?


So far I have seen

www.propinch.com
http://www.osrocketracing.com/pistonsleeve.php
??? Who else is there?
Who is the best?

Thanks again guys..
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Old 12-22-2007, 08:20 PM   #2
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you can do it yourself also, you need a hose clamp and the piston out of your motor.i dont want to give wrong info here but there is a way to do it floating around on the web just not sure where i read it though. i dont think its a permenant fix for a worn out sleeve and piston thoughand the brass bearing in the connecting rod.
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Old 12-22-2007, 11:47 PM   #3
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for no more than what the pinchers charge to do it right i would let an expert do it. look up OS rocket
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Old 12-23-2007, 10:02 AM   #4
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I use rayaracing.com
Very affordable pricing, quick and good service.
I ran a pinched cv-r .12 most the summer. It's still running strong
for the winter racing as well. My opinion is pinched engines are as
good or better than a new engine. Break em in just like a new one.
Don't ask for a tight pinch, light to medium is all you need.

I only recommend pinching engines that you've used yourself and they
were good engines but just lost pinch. I wouldn't buy somebody elses engine off ebay or that you don't know at the track and expect a pinch to bring it back. There are to many other things can be wrong with an engine and no way to tell it's true history.
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Old 12-23-2007, 10:12 AM   #5
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Heres the list SO far... Keep them coming..

www.osrocketracing.com
www.propinch.com
www.rayaracing.com




Please list your opions of these companys. both good and bad...
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Old 12-23-2007, 10:15 AM   #6
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Forgot to add... I agree with mugenlife and don't do the home pinch thing. Just doesn't work out more than half the time. I did that for awhile and it was so easy to oversqueeze sleeves with those roll clamps. Ruins them too. For 25 bux most any of those guys will squeeze it and send it back to ya. It's less the more ya send too. Worth a shot at least once just to form your own opinion, no matter which guy ya use.

Last edited by jbrow1; 12-23-2007 at 05:00 PM.
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Old 12-23-2007, 12:33 PM   #7
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I like OS Rocket. They do a great job and stand behind their work!
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Old 12-23-2007, 01:08 PM   #8
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Quick question about OS?

How the hell you get a hold of anyone at OS Rocket??!! I've tried E-mail and phone several times(Left messages), and he/they never returns any of them. (3 weeks now) I don't need P/S pinched, but would like to get on of there Cooling heads....
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Old 12-23-2007, 01:24 PM   #9
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Same here, I can never reach OS rocket. That's why I never sent anything in to them, plus a local racer here has the RayAracing sleeve pincher tool so I get it done locally now.
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Old 12-23-2007, 01:27 PM   #10
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Quote:
Originally Posted by jombo View Post
you can do it yourself also, you need a hose clamp and the piston out of your motor.i dont want to give wrong info here but there is a way to do it floating around on the web just not sure where i read it though. i dont think its a permenant fix for a worn out sleeve and piston thoughand the brass bearing in the connecting rod.
DO NOT use a hose clamp to repinch your sleeve. That is VERY bad advice. Either buy the right tools, or send it to someone with the right tools.
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Old 12-23-2007, 03:50 PM   #11
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I would also recommend OS Rocket, they do a very good job and they pinch alot of engines and have alot of experience. They have really nice v cut engine heads too.
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Old 12-23-2007, 04:07 PM   #12
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Not sure why your having trouble contacting OS. They have always answered my email even when I wasn't satisfied with a pinch. They told me to send it back to them and they would take care of it - No questions asked!

I know many other people who have done engines with them and they have turned out great.

Try reaching JB at

osrocket@neo.rr.com
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Old 12-23-2007, 05:11 PM   #13
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i have installed a new network system of computers and the mail was getting sorted to the junk email folder in the exchange server for a couple weeks, my apologies for that one, lol, anyway all sorted out now,,and you can also call me at 419-566-1909 if no answer leave a message and i will call you back, alot of times the phone will not pick up in the shop, thanks alot jb

http://www.osrocketracing.com
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Old 12-23-2007, 06:28 PM   #14
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Quote:
Originally Posted by Steve Walters View Post
Quick question about OS?

How the hell you get a hold of anyone at OS Rocket??!! I've tried E-mail and phone several times(Left messages), and he/they never returns any of them. (3 weeks now) I don't need P/S pinched, but would like to get on of there Cooling heads....


I have never worked with OS Rocket but I share your frustration in trying to contact a recommended company multiple times over several months and never getting a answer to your question. My problem happened with BCE which I see your a product testor for, just thought I would point it out to show the irony.
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Old 12-23-2007, 06:44 PM   #15
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when you flame out midway through your final and miss out on your bump up, is that a big enough of a "con" ?
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