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07-31-2018, 09:02 AM | #21 |
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Re: Mopar 904 trans pressure
I just recently saw this problem on a customers 360 Drag Pak engine.
It was caught in time before the crank was damaged. The root cause was not the converter but the converter pilot hub not having adequate clearance and bottoming in the crankshaft .030" before the converter reached the flexplate . I was able to increase the clearance by using a .125" mid plate as a spacer and then using .125" spacers between the converter and flexplate . The proper fix will be to machine the pilot hub deeper when the engine is apart for freshening . In this case the crank was a Scat crank , but I checked the depth against a stock 360 and it was within .020". Converters do not actually balloon with modern shells and reinforcements ,but rather they try to push out of the pump .Excessive line pressure can be a factor, but the key word is excessive Usually this movement is absorbed by the flexplate ,,but when there is no free movement in the crank pilot hub ,the thrust takes the load.
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Tom Goldman 1500 SG , 1506 STK |
08-19-2018, 06:21 PM | #22 | |
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Re: Mopar 904 trans pressure
Quote:
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08-19-2018, 08:06 PM | #23 | |
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Re: Mopar 904 trans pressure
Quote:
Bill |
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08-20-2018, 02:49 PM | #24 |
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Re: Mopar 904 trans pressure
Mike that is great news.
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08-20-2018, 05:46 PM | #25 |
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Re: Mopar 904 trans pressure
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08-22-2018, 05:18 PM | #26 |
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Re: Mopar 904 trans pressure
You should inspect the front pump in the trans. If it was pushing forward on the thrust bearing, then it was probably pushing back on the inner gear of the pump.
Eddie Bolton |
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