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Author Topic:   dowel pin question
marksracing
Dirt Forum Racer

Total posts: 79
posted June 28, 2004 08:53 PM  
we ran one race on a new motor and the oil press drop from 60 to 20 got to the shop and change the oil and it had brass all in it . we got the motor out and gave it back to the builder .it spun the thrus bearing out and mest up the crank flange.some people have told us it did that because we had short dowel pin ???? have any of you ever heard of this

avila
Dirt Freak

Total posts: 217
posted June 29, 2004 09:56 AM  
dowel pin and brass ... the only place i can
think of is the brass distributor gear that
is held in by a dowel pin. the dowel pin
should be flush with the sides of the
distributor shaft. what did the bottom of
the distributor look like?

marksracing
Dirt Forum Racer

Total posts: 79
posted June 29, 2004 08:11 PM  
sorry I AM TALKING ABOUT THE DOWEL PIN IN THE BACK OF THE MOTOR. ALSO WE ARE USEING A MOTORPLATE

Donnie Ross
Dirt Freak

Total posts: 264
posted June 30, 2004 04:59 AM  
you should use the longer pins for transmission support but i would say it probably had nothing to do with the thrust bearing problem.ussually I broke tranny cases till I switched

juliaferrell
Dirt Freak

Total posts: 370
posted June 30, 2004 12:56 PM  
If your knocking the thrust out of the thing more than like something else other than dowel pins is the culprit. The long dowel is recommended for case rigidity but that has nothing to do with pinching the crank up in the thing. I would check bellhousing, clutch, tranny front shaft issues first.

marksracing
Dirt Forum Racer

Total posts: 79
posted June 30, 2004 07:51 PM  
WHAT SHOULD I LOOK FOR IN THE bellhousing, clutch, tranny front shaft

marksracing
Dirt Forum Racer

Total posts: 79
posted June 30, 2004 07:53 PM  
WHAT SHOULD I LOOK FOR IN THE bellhousing, clutch, tranny front shaft

    

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