High gear clutch slippage

[goinbroke2]

Stewart, in my example of driving an old truck up a hill;
In 3rd I could floor it all the way up the hill from about 1800 to about 4000 with no slippage.
In 4th I would slowly roll on the throttle and it would pull to about 2500 or so and then slip. This was repeatable as I'd back off and get lock up then add throttle until it slipped.

I'll stick with increased resistance since we're not talking blowing through the clutch on a gear change but after full lock up, then getting slippage.

DL Rambo nailed it.

[goinbroke2]

This reminds me of the 67 falcon I had. 170 6cyl 3 on the tree. Was limited to about 60mph because the clutch would slip after that. At the end I had to back up the driveway cause reverse was geared lower than first! LOL! Great times for a 16 year old!
Put on a 200 head and carb from 300 truck, thrush muffler...whooee, I was stylin'! LOL!


Oops, sorry for the deflection down memory lane, hehehe

[Jeff Lee]

You need to ask Rob. There's usually more to the story...
Regarding the price of a McLeod rebuild, the parts are not the same, therefore there is a different price. No different than any other component of your race car! If your happy with your McLeod clutch and service, I would not suggest changing anything. Happy shifting!

[Jeff Lee]

LOL...and the rest of the story is...launching a 4-speed car in THIRD gear will ruin the clutch EVERY time! The brand new parts that WERE put in will warp like a krinkle cut fry immediately when you launce in 3rd. If you can't find first the first, second, or even third time to the track, it is time to sell the parts and put an automatic in the car. Sorry it did not work out for you and there are always racers looking for a deal in race transmissions and clutches.

[Mark Madison]

Originally Posted by Jeff Lee

LOL...and the rest of the story is...launching a 4-speed car in THIRD gear will ruin the clutch EVERY time! The brand new parts that WERE put in will warp like a krinkle cut fry immediately when you launce in 3rd. If you can't find first the first, second, or even third time to the track, it is time to sell the parts and put an automatic in the car. Sorry it did not work out for you and there are always racers looking for a deal in race transmissions and clutches.

That's right I screwed up ,I killed the clutch . sent it to Rob to Fix and he tried to screw me . plain and simple

[3pedals]

OLD post, I know, but I had to throw my thoughts out there
- Mechanical advantage
in 1-3 gear the engine/clutch has mech advantage on the output, in 4th there is NO mech advantage, therefore as other have posted the clutch "sees" the MOST load of the run.

[Mark Madison]

Rob might have you fooled with whatever B.S he spun regarding this issue, I'm Not. The fact is I paid $925.64 for a clutch rebuild and the clutch came back to me with warped heat shields. So warped that when Mike Sullivan disassembled the unit to weight the leavers and check the spring rates to configure a clutch program, he sent the unit back to me and said the clutch needed to go back to Rob to have the heat shields fixed they where not flat! After I complained Rob replaced the flywheel shield and chucked the clutch side in a lathe and cut.it. So much for not grinding these parts flat. If you would like I can run up to my trailer and retrieve the warped heat shield and post pictures for all to see.

In this thread you state that a clutch rebuild from Rob is $900.00 and replacing heat shields is a normal part of a clutch rebuild . The question that has not been answered is why where mine not? I hope Rob made a photo copy of the check for $925.64 because thats the last of my money he will ever see. Now jump back on the phone and see if you two can put a positive spin on this .