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Post by 358t on Apr 17, 2013 18:31:50 GMT -6
I'm on my way on what feels like a decent pass. About the time it is supposed to shift into high gear the engine just goes to the rev limiter.  Tried low, high and reverse without any sign of loading the engine or movement. What broke? Scott |
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Post by jeremy341a on Apr 17, 2013 20:08:21 GMT -6
Input shaft. I have broke several and always right at the gear change.
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Post by bracketracing on Apr 17, 2013 20:19:28 GMT -6
Agree with Jeremy. Input shaft
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Post by jim0602 on Apr 17, 2013 21:07:10 GMT -6
I had trans issues too, stuck valves in the valve body caused me to do a
100+ mph 180 when it locked the rear tires. Not fun.
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Post by 548h on Apr 17, 2013 23:09:47 GMT -6
Well it could be many things. Loss of prime, shift linkage, input shaft, internal fluid leak, etc. What did you find?
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Post by 358t on Apr 18, 2013 7:45:53 GMT -6
It was the converter.
Like you guys I thought input shaft (also have experience breaking those) or a trans problem. Upon disassembly at the track the input shaft was found in one piece. Being baffled and out of time plus disassembly uncovered a cracked case around one of the pump bolts we just decided to load up and go home. Spent the day sunday building an entirely different trans with different case and valve body. Reused the converter and pump. Put it back together and the problem still persists. Check pressure and it's got 200psi at 1500rpm. The only thing left was the torque converter. Changed it out it with spare and wala.... it moves.
Scott
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Post by 69b1dart on Apr 18, 2013 8:24:21 GMT -6
glad its not a 727
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Post by 548h on Apr 18, 2013 10:55:56 GMT -6
check your cooler and lube ckts. if it wasn't a clean break you just pumped a bunch of doo doo into your new trans and cooler with that broken converter.
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Post by dennismopar73 on Apr 19, 2013 6:00:35 GMT -6
I have heard that there area lot of power glide issue so far this year.
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Post by bracketracing on Apr 19, 2013 8:02:26 GMT -6
Lets see 90% of the RACE cars have power glides. I've only heard of 1 breaking. That's a lot. Lol
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Post by 69b1dart on Apr 19, 2013 11:22:49 GMT -6
anyone wants to buy a 727
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Post by dennismopar73 on Apr 19, 2013 21:05:15 GMT -6
three i know of this past sat
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Tried low, high and reverse without any sign of loading the engine or movement. What broke? 
