Is my pump broken? Different converter?
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 82
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Is my pump broken? Different converter? If my torque converter is back 15/16", and its clunked three times and spins freely with no pressure put on it but my engine won't turn over by hand when connected to the trans, is my pump lunched? Or are there different converters - one with say a smaller diameter nose or something?
thanks
Scott
thanks
Scott
FormerVendor
Joined: Oct 2006
Posts: 3,123
Likes: 3
From: D-F/W
I've never taken a measurement from the bellhousing to the converter pads on a 60e to be honest with you. But, I do know that you should be able to rotate the converter freely once the transmission is bolted to the engine. If you cannot rotate either the converter or the engine, loosen the bellhousing bolts and slide the tranny back then see if you can rotate them both.
It is possible for the converter to have shifted when you installed the transmission. If you still have issues after rechecking your work, then feel free to give me a call to discuss it in detail.
g
It is possible for the converter to have shifted when you installed the transmission. If you still have issues after rechecking your work, then feel free to give me a call to discuss it in detail.
g
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 82
Likes: 0
Its a 4l65 on an LS2. I don't know if it matters what the Ls2 came out of or what the 65 came out of but a C6 and a Denali respectively. I've already had it the trans on and off three times with the same thing each time. 3 clunks, it won't go in any further, everything spins, attach the trans and neither the engine or the converter will turn.
FormerVendor
Joined: Oct 2006
Posts: 3,123
Likes: 3
From: D-F/W
At this point I doubt you've damaged the pump. However there is a mismatch of parts here somehow.
In addition to the info Chris is asking about... have you verified that the flexplate is facing the correct direction?
When you bolt the tranny up, does the flexplate interfere with the flexplate? Can you slide the converter back and forth at all?
g
In addition to the info Chris is asking about... have you verified that the flexplate is facing the correct direction?
When you bolt the tranny up, does the flexplate interfere with the flexplate? Can you slide the converter back and forth at all?
g
Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 82
Likes: 0
Its supposed to be a stock flexplate and converter. The dish in the center of the plate goes towards the engine. The converter is the 3 bolt one. The nose is about 1". When its all bolted up I can't spin it. I'll check to see if it will slip back and forth. Thanks for the help so far.
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Thread Starter
Staging Lane
Joined: Jan 2011
Posts: 82
Likes: 0
Three more pics. I have bolted it up 3 times already and I noticed the verter will woble a bit. Is that normal? The engine was a stick - would that use a different bushing. Should I change it or the converter?
It should just pull out, might need a slide hammer to get it out though. The pilot will then measure ~1.703 and the converter will fit properly. No bearing or bushing for the converter.
Chris
Chris
Another item I see that needs correcting, I thought those flexplates only bolted up one way with the bolt pattern? There is a index hole in the bolt pattern of the flexplate that should correspond to a index hole in the crank. And yes that pilot bushings is for a manual transmission, just use the proper tool, a blind hole puller most auto parts store lend those out for free, don't use those grease or wet towel methods, that is a no-no on LS engines. Definitely check the front pump if you tightened all the bellhousing bolts down, you forced the convertor into the front pump possibly damaging the pump, front bushing and seal and possibly the little tabs on the torque convertor snout on the transmission side.
Last edited by lizeec; Aug 24, 2011 at 03:14 PM.