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Old 09-04-2009, 03:37 PM
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T-400 Clutch Plates

I'm working on a TH400.
The kit comes with a set of smooth and waffled direct and forward clutches.
Which ones go where?

Thanks,
Pugsy

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Last edited by 123pugsy; 09-04-2009 at 04:21 PM.
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Old 09-04-2009, 04:21 PM
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One more question......I've got all my parts mixed up
.....which piston has the checkball.....fwd or direct?

Also , should I turn down the piston to max out the amount of clutch plates for high performance use?
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Old 09-04-2009, 04:49 PM
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Smooth clutches go in the forward clutch as it isn't a "shifting" clutch. The waffle pattern is there to allow fliud escape and cooling when the clutch applies during the shift.

The piston with a check ball matches the drum that doesn't have a check ball, and vice versa.

Last edited by ericnova72; 09-04-2009 at 05:58 PM.
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Old 09-04-2009, 05:56 PM
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Thanks for splainin in a way I can remember.

Pugsy
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Old 09-05-2009, 10:30 PM
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Quote:
Originally Posted by 123pugsy
One more question......I've got all my parts mixed up
.....which piston has the checkball.....fwd or direct?

Also , should I turn down the piston to max out the amount of clutch plates for high performance use?
There MUST be at least one checkball for each drum. Sometimes the CB is in the drum, sometimes in the piston, or both. Just make sure that both assemblies have a CB.
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Old 09-06-2009, 05:14 AM
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Thanks.

I have one checkball in each.

I found some other old pistons on the shelf and noticed different thicknesses.
Are some designed only to hold 4 clutch plates and others designed to hold five ?
I ended up turning the pistons for this build down to fit all five.

Last edited by 123pugsy; 09-06-2009 at 05:38 AM.
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Old 09-06-2009, 07:52 AM
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Quote:
Originally Posted by 123pugsy
Thanks.

I have one checkball in each.

I found some other old pistons on the shelf and noticed different thicknesses.
Are some designed only to hold 4 clutch plates and others designed to hold five ?
I ended up turning the pistons for this build down to fit all five.

Pistons are different heights and there are some drums machined for more depth.

There are thinner frictions and steels available to increase friction counts.

Performance trans should have a 6 x 6 x 3 friction count. Some I build run 7 x 7 x 4 friction counts
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Old 09-06-2009, 12:37 PM
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Quote:
Originally Posted by Crosley
Pistons are different heights and there are some drums machined for more depth.

There are thinner frictions and steels available to increase friction counts.

Performance trans should have a 6 x 6 x 3 friction count. Some I build run 7 x 7 x 4 friction counts

Can you translate those #'s to English Crosley?
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Old 09-06-2009, 02:48 PM
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Quote:
Originally Posted by 123pugsy
Can you translate those #'s to English Crosley?

6 frictions in forward

6 frictions in direct

4 frictions in intermediate
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Old 09-06-2009, 04:11 PM
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Thanks Crosley.
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