I wounder why the 3 and 4 clutches where TOAST.... lol Tell me what you guys think of the damage and what might have caused it.. thanks

PICS LINK

http://www.performabuilt.com/dumontpics.html

 

Judging by the hot spots on the steels and very worn frictions, I would suspect that excessive clutch clearance with hard 2-3 shifts is what broke the drum. Just a guess. Vince

 

Same thing I told him when he sent me the pictures to host for him.
Here are the actual pictures and for anyone asking no this is not a PerformaBuilt unit. I just hosted the pictures for him since he couldnt get them to load anywhere. I beleave its a home built unit.

[IMG]file:///C:/DOCUME%7E1/PERFOR%7E1/LOCALS%7E1/Temp/moz-screenshot-3.jpg[/IMG]
















I would agree with Vince excessive wear and or clutch clearance and possibly excessive line pressure could be the cause.

 

x-ray the drum and or use a flourescing dye on it and I bet the metal looks like a sponge. Looks like a contiminated casting. the snap ring lugs fialed and the rest of the damage ensued. Remember the parts your using are only ever so slightly over engineered.

 

to much LP and too much clearance

 

This is not a PerformaBuilt unit. That is true... It was a stage 1 century built trans. There is another post about this trans.. 3rd and 4th clutches if you want more info.

 

Too much line pressure and too much clearance in the 3-4 frictions.

 

I am looking into having and input drum built and shipped to my house...That way, it can be installed and the car is back on the road.