[123pugsy]

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

[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?

[ericnova72]

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.

[123pugsy]

Thanks for splainin in a way I can remember.

Pugsy

[mmerlinn]

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.

[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.

[Crosley]

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

[123pugsy]

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?

[Crosley]

Originally Posted by 123pugsy

Can you translate those #'s to English Crosley?

6 frictions in forward

6 frictions in direct

4 frictions in intermediate

[123pugsy]

Thanks Crosley.