Torque converter clearance

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mike1965

mike1965

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When I install the converter and trans to the motor how much should I pull the converter back out of the trans towards the motor.
Thanks Mike
 
dont pull it out. the factory book shows the lugs should be about 1/2 inch back from the face of the trans .
 
moe7404 said:
dont pull it out. the factory book shows the lugs should be about 1/2 inch back from the face of the trans .
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You don't want the conv to bottom out on the pump you need some clearance and then add spacers in between the conv and the flex plate.
 
.........I have never ever added a spacer between the converter and flex plate......kim......... I will ad that some have had a fair bit of clearance while others have had practically nil, weather it be a factory or aftermarket converter...
 
oldkimmer said:
.........I have never ever added a spacer between the converter and flex plate......kim.........
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And that is because you put it together the way it was meant to be done.
So if all parts are standard equipment you bolt the engine and trans together, then pull the converter up to the flywheel and bolt er up.
 
Well since the slots in the hub are about what, 5/8?. And the pump drive lugs are about, what 5/16 to 3/8? That would indicate 1/4 inch to be about optimum. And thats about what Ive experienced.The hub has a bit of lead-in chamfer, soif it comes out less than the 1/4, that would be a good thing.
The stator support has plenty of engagement. And the input shaft as well.
Now the pilot, on the front needs to come ahead for support, so easy on the spacers.In practice,it all fits pretty good. At least with factory parts.
 
When I ordered my Dynamic converter, they said 3/16" was the max they liked to see for space between the flex plate and converter lugs with the converter pushed all they towards the transmission. Anything more, they said add a washer.
 
oldkimmer said:
.........I have never ever added a spacer between the converter and flex plate......kim......... I will ad that some have had a fair bit of clearance while others have had practically nil, weather it be a factory or aftermarket converter...
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x2..if your adding spaces i think something is wrong..
 
You didn't like the answers at FBBO? in case you missed it ...

Mike Gaines said:
one would think until the converter lugs contact the flex plate....????
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Garys1969RR said:
I have always just bolted them up, and the spacing comes out fine. There is a lot of lee way in there for the front pump lugs to engage.

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In 15 or 20 installs, have never had a hint of a problem. All types of converters and flex plates.
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Jackpot50 said:
Before putting flex plate on align bolt holes and mark converter and flex plate so it is easy to bolt up. Put converter in transmission till seat into pump, put on motor and bolt up transmission pull converter out till standoffs touch flex plate and install bolts that's it.
Min. clearance 1/8"
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WP29440SE said:
xs2 , I have installed more transmissions that I can count and if im having to add spacers and shims and washers there are bigger issues than using a band aid like that. like maybe your flexplate is on backwards. the converter bolts will always pull the converter to the flexplate like its supposed to. or so it seems to me, but what do I know.
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Meep-Meep said:
Seems this is an engineered dimension and I never thought much of it. There are virtually no variables assuming all the parts are as engineered so the chance of it being wrong are slim. Aftermarket converters would be one variable but pretty sure they got them correct. I just installed one and want to say I pulled it forward at least 1/4" maybe even 3/8". Works fine.
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RT K_line said:
I've worked in the transmission business for years in the past and never had to add shims or washers to the converter. Bolt it up and go. The witness marks iv seen on torque converter hubs have plenty of room for pump gear contact when installed.
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theman440 said:
My transmission man says .060
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I would agree that as long as the center hub engages the crank register AND you have the same thickness washers it would be ok to space it.
Problem is, standard washers are not even close to the same thickeness.
I'd have to measure them for uniformity to get four that were the same.
 
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