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Author Topic:   Proper Break-In
shadowsarge
Member
posted August 07, 2004 11:23 AM
What would be a proper break-in procedure for an engine built for short track dirt racing? I know most manufacturers discourage wide open throttle on new engines for the first 1000 miles or so. With a race engine this isn't exactly practical. How would I break it in properly without destroying it?


R26MOD
Member
posted August 07, 2004 01:28 PM
You're in the way if you take it easy. RACE IT!!!!!


shadowsarge
Member
posted August 07, 2004 02:48 PM
Easy for you to say R26, you're not paying for it. However, if you would care to donate toward the cause.........


quietmans
Member
posted August 07, 2004 03:15 PM
Have to agree with r26mod. If you are scared you are in the wrong sport.We crank'em run to do cam break in change oil check valves and put'em on the track.If you build it right it is ready to run.Do not be stupid and go out there doing excess spinning in the mud but if it is hooked up and under a pull it is ready to run.


shadowsarge
Member
posted August 07, 2004 03:22 PM
Ain't Skeered. Just didn't want to do anything foolish and costly and get an idea of how ya'll handle the break-in. In the end, things are gonna break and money will get spent. But, ya gotta pay to have this kind of fun!


Wildside17
Member
posted August 07, 2004 09:53 PM
shadowsarge, go to www.ptmraceengines.com and click on tech at top then click tips on left. they have their recomendations under cam break in. I think it is paragraph 10. good luck.

[This message has been edited by Wildside17 (edited August 07, 2004).]

shadowsarge
Member
posted August 08, 2004 06:27 AM
Just what I was looking for Wildside17, thanks for the info.


R26MOD
Member
posted August 08, 2004 12:42 PM
Didn't mean to be rude. Our motor is runin on a dyno.


shadowsarge
Member
posted August 08, 2004 01:11 PM
No problem R26mod, good luck on the track.

P.S. - The offer to contribute to my racing fund still stands.....

Raz_900
Member
posted August 08, 2004 08:03 PM
I prefer to take it easy the first night out if I can't get some run time (like a dyno session or some blasts up the street) on it beforehand. After the first 15-20 minutes to break in the cam, it needs some mid rpm, mid load time to break in the rings and such.

Oh and the break it in and run it process blew 3 motors at my track this weekend. A very respected Late Model out for the first time lost oil pressure and last year's Pro Stock champ blew his new motor apart.

Is it that worth it for one night? At the least, I'd back it down to like 80% for warm ups and the heat race, change oil and filter again then if you have to get on it for the feature.

tech355
Member
posted August 09, 2004 07:18 AM
Motors blow every week,some new some not,but can they all be blamed on break in method?? I think not,everybody has there own way and the way it was assembled will have the biggest impact.


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