Many performance C-4 builders have recommended drilling vent holes in the HIGH/REVERSE drum to better evacuate fluid. Would that still hold true with the FORWARD clutch drum? Any advantages?
Many performance C-4 builders have recommended drilling vent holes in the HIGH/REVERSE drum to better evacuate fluid. Would that still hold true with the FORWARD clutch drum? Any advantages?
I agree with Greg , no reason to drill the forward drum. In fact I quit drilling the high gear drums . Makes no difference on longevity or track performance in my testing.
Randy
Retired trans builder doing research on a c-4 with a brake. In my research I have seen several companies that have stopped drilling the direct drum. They don't say why, just that they have stopped. Possibly from either, A weakening the drum or B shortened band life.
That is not a drain hole . That is done during manufacturing , Put something down through it you'll see it lines up with the feed hole to the sealing rings
Retired trans builder doing research on a c-4 with a brake. In my research I have seen several companies that have stopped drilling the direct drum. They don't say why, just that they have stopped. Possibly from either, A weakening the drum or B shortened band life.
Greg ,
The problem "I've" seen with trans brakes is slow release on the high gear clutches and that "kills" them because of the slippage versus "clean release". Nothing to do with drilled holes in the drum or lack of. I bought a trans brake from a very popular east coast company that uses the Winters reverse manual valve body ( like I already ran) and had the high gear clutches go away after 12 runs. I pulled it and went back to the unmodified Winters VB and have over 300 runs with no appreciable wear.
Randy
You know a lot of high clutches can be burnt even before they apply in top gear ... That's why i drill a bleed now for any trans that will see over 6000 in first gear ..
I think that can do damage also
My bottom drivers side bellhousing broke while torquing it down. The trans appears flat. Any thoughts on what could cause it? I may get the car running before replacing. Many issues have happened. All tranny/ flexplate/starter related
I need a tailshaft housing from a C4 that fits a 65 Falcon. Will have one from a 65 Mustang to trade or will buy outright. Email pics to [email protected]
Thanks, Ron
I recently purchased a c4 torque converter for my case fill c4 transmission. It is a used one the part numbers say it is a dynamic tct torque converter. When i installed it my trans will not engage and car will not move. I made sure multiple times that it was fully engaged in transmission. i...
I have a FM18 convertor attached to my C4 wiht 157 TCI flexplate, small bellhousing. When I pull the tranny up it will bind the tranny. I have done everything to make sure it is seated properly. Could the snout be too long, if so what can I do. Here is what I have.
1984 302 From F-150
157...
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