High gear clutch slippage - Page 3

Jeff Lee · 03-03-2012, 02:58 PM

When Rob rebuilds a clutch for about $900 it's new heat shields & disk. I hear others saying that's too much so they go elsewhere and somebody takes a grinder to the surfaces and sometimes to the disk or possibly a cast off from a fuel team or maybe even a new disk. Ask, don't assume.

Use this common gear spread:
3.19
1.95
1.40
1.00

Shift all gears at 7,000 RPM
1-2 shift = 38.87 % drop = 2,721 drop = 4,280 RPM
2-3 shift = 28.21% drop = 1,975 drop = 5,025 RPM
3-4 shift = 28.57% drop = 2,000 drop = 5,000 RPM

Not sure if that helps...

I had one of my best years ever last year and I'm already ahead of 1st quarter of last year. Since I made the decision to go back in Stock, i've been pushing all parties involved. Just found out the other day the wheels I had made are not right so Monday I'm having another pair made, it will be 2 weeks. Hopefully my new custom bell housing will be done this week. Cam just received last week. Heads are done except final cut to CC spec. Short block just needs rings & bearings to assemble.
My goal is engine dyno within 3 weeks. New floors in car & fix chassis issues within 1 weeks after that. Garrett Monde is building me a new set of headers. I want everything within 90% of track readiness by end of April.
I'm changing all fuel lines, a data logger and a few other things that need to get done. Test / tune summer (aargh!), NHRA event in the fall.

Dinsdale · 03-03-2012, 03:37 PM

"When Rob rebuilds a clutch for about $900 it's new heat shields & disk. I hear others saying that's too much so they go elsewhere and somebody takes a grinder to the surfaces and sometimes to the disk or possibly a cast off from a fuel team or maybe even a new disk. Ask, don't assume."

Just got my Soft-Lok back from McLeod. They replaced both heat shields, 3 levers and pivot hardware, supplied a new disc, cleaned, repainted, re-certified and set it up for me. New studs in the flywheel and supplied a plastic aliignment tool. It looks like new and the cost was $550.00. Same as a buddy of mine had done a couple months back. I was very suprised at the work and price.

Mark Madison · 03-03-2012, 05:22 PM

Quote:

Originally Posted by Jeff Lee

When Rob rebuilds a clutch for about $900 it's new heat shields & disk. I hear others saying that's too much so they go elsewhere and somebody takes a grinder to the surfaces and sometimes to the disk or possibly a cast off from a fuel team or maybe even a new disk. Ask, don't assume.

Use this common gear spread:
3.19
1.95
1.40
1.00

Shift all gears at 7,000 RPM
1-2 shift = 38.87 % drop = 2,721 drop = 4,280 RPM
2-3 shift = 28.21% drop = 1,975 drop = 5,025 RPM
3-4 shift = 28.57% drop = 2,000 drop = 5,000 RPM

Not sure if that helps...

I had one of my best years ever last year and I'm already ahead of 1st quarter of last year. Since I made the decision to go back in Stock, i've been pushing all parties involved. Just found out the other day the wheels I had made are not right so Monday I'm having another pair made, it will be 2 weeks. Hopefully my new custom bell housing will be done this week. Cam just received last week. Heads are done except final cut to CC spec. Short block just needs rings & bearings to assemble.
My goal is engine dyno within 3 weeks. New floors in car & fix chassis issues within 1 weeks after that. Garrett Monde is building me a new set of headers. I want everything within 90% of track readiness by end of April.
I'm changing all fuel lines, a data logger and a few other things that need to get done. Test / tune summer (aargh!), NHRA event in the fall.

Then why did my dual 7 came back without this being done? I had to complain to Rob to get this done ,After paying the $900.00 to rebuild the clutch . I paid to have it fixed the first time and didn't question the price. I just wanted it fixed. . No song and dance just fix it. Rob did as I asked and replaced the heat sheilds, the second time around. But, there should have not been a second time around.

Any body want to buy a Jerico and Advanced 7 and a clutch program from Mike Sullivan for the Dual 7? E mail me at mark_madison @sbcglobal.net And I will provide all prices and product info.

Mark Madison

Jeff Lee · 03-03-2012, 08:37 PM

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 · 03-03-2012, 09:11 PM

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 · 03-03-2012, 09:31 PM

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 .

Mark Madison · 03-03-2012, 09:57 PM

Quote:

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 · 08-24-2012, 10:15 PM

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.

03-03-2012, 02:58 PM	#21
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: High gear clutch slippage When Rob rebuilds a clutch for about $900 it's new heat shields & disk. I hear others saying that's too much so they go elsewhere and somebody takes a grinder to the surfaces and sometimes to the disk or possibly a cast off from a fuel team or maybe even a new disk. Ask, don't assume. Use this common gear spread: 3.19 1.95 1.40 1.00 Shift all gears at 7,000 RPM 1-2 shift = 38.87 % drop = 2,721 drop = 4,280 RPM 2-3 shift = 28.21% drop = 1,975 drop = 5,025 RPM 3-4 shift = 28.57% drop = 2,000 drop = 5,000 RPM Not sure if that helps... I had one of my best years ever last year and I'm already ahead of 1st quarter of last year. Since I made the decision to go back in Stock, i've been pushing all parties involved. Just found out the other day the wheels I had made are not right so Monday I'm having another pair made, it will be 2 weeks. Hopefully my new custom bell housing will be done this week. Cam just received last week. Heads are done except final cut to CC spec. Short block just needs rings & bearings to assemble. My goal is engine dyno within 3 weeks. New floors in car & fix chassis issues within 1 weeks after that. Garrett Monde is building me a new set of headers. I want everything within 90% of track readiness by end of April. I'm changing all fuel lines, a data logger and a few other things that need to get done. Test / tune summer (aargh!), NHRA event in the fall. __________________ Jeff Lee 7494 D/S '70 AMX Last edited by Jeff Lee; 03-03-2012 at 03:01 PM.

03-03-2012, 03:37 PM	#22
Dinsdale Member Join Date: Oct 2004 Location: Canada Posts: 313 Likes: 0 Liked 6 Times in 2 Posts	Re: High gear clutch slippage "When Rob rebuilds a clutch for about $900 it's new heat shields & disk. I hear others saying that's too much so they go elsewhere and somebody takes a grinder to the surfaces and sometimes to the disk or possibly a cast off from a fuel team or maybe even a new disk. Ask, don't assume." Just got my Soft-Lok back from McLeod. They replaced both heat shields, 3 levers and pivot hardware, supplied a new disc, cleaned, repainted, re-certified and set it up for me. New studs in the flywheel and supplied a plastic aliignment tool. It looks like new and the cost was $550.00. Same as a buddy of mine had done a couple months back. I was very suprised at the work and price. __________________ Dale Posnick

03-03-2012, 08:37 PM	#24
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: High gear clutch slippage 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 7494 D/S '70 AMX

03-03-2012, 09:11 PM	#25
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: High gear clutch slippage 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. __________________ Jeff Lee 7494 D/S '70 AMX

03-03-2012, 09:31 PM	#26
Mark Madison Junior Member Join Date: May 2009 Posts: 91 Likes: 76 Liked 32 Times in 9 Posts	Re: High gear clutch slippage 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 .

08-24-2012, 10:15 PM	#28
3pedals Junior Member Join Date: Oct 2006 Posts: 10 Likes: 0 Liked 0 Times in 0 Posts	Re: High gear clutch slippage 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.