Clutch replacement suggestions?

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R Code
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Re: Clutch replacement suggestions?

#11

Post by R Code » 01 Dec 2017, 10:08

1969XR7Vert wrote:
30 Nov 2017, 13:55
I run a Centerforce diaphragm clutch and it is pretty good. I say pretty good in that it is right on the edge of not enough for the 450-500 HP 408C stroker I run. For a 300 HP 351 engine it would be perfect. Goes right in place of the stock Long style clutch and uses the same T/O bearing.

https://www.summitracing.com/parts/ctf- ... /overview/
Where "perfect" is defined as spending $450 to get the same result as a $150 stock clutch.
- Chris

1967 Std 4 speed conversion
1969 XR-7 "R Code" Convertible
1989 Merkur XR4Ti

Cougar Bill
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Re: Clutch replacement suggestions?

#12

Post by Cougar Bill » 01 Dec 2017, 14:16

I used to run a diaphragm Center Force, till I had a few failures. Weird things.

I switched to McCloud and what a difference.

Here's the trick

The old school style was /is good for some people/applications, but for every day driving the only way to go is the following:

1. Remove the monster spring at the top of the clutch pedal under the dash.
2. Install a diaphragm style clutch of your choice.
3. Replace the spring for pedal return under the hood (just under master cyl.) with a
spring just strong enough the bring pedal back to top position.
4. Adjust clutch rod for proper clearance.

You now have a very drivable car that has the feel of a "new car" clutch!
1970 XR-7 428 Ramair 4 speed (now under restoration)
1970 Eliminator Boss 302
1969 XR-7 428 R-code 4 speed
1969 Std. 428 R-code C-6
1969 XR-7 Convertible 351 AOD
1969 XR-7 Convertible 428 C6
1969 XR-7 351 5 speed "RestoMod" New 525Hp "pacemaker"
https://www.youtube.com/watch?v=SBkOzr7N13Y
1968 XR-7 302-4v 4 Speed (J-code)
1967 XR-7 302 & AOD Green- Wife's Cat
www.cougarbill.com

Gyrhead
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Re: Clutch replacement suggestions?

#13

Post by Gyrhead » 01 Dec 2017, 17:09

Sachs is a very good unit. I bought a RAM clutch recently, and was surprised to get an LUK stamped clutch in the RAM box. However LUK is a good OEM style brand - popular in the European market.

You shouldn't need anything heroic for this application. A diaphragm style - iron Fomoco flywheel (SFI steel if racing or tech inspected) quality hardware and a new TO bearing (replace the clutch fork pivot ball) should give you great service. If your new pressure plate comes with dowel pins - use them.

You're driving a '69 I think - the post above is 100% right - you must remove the assist spring at the top of the clutch pedal if running a stock style diaphragm clutch. Otherwise you'll press the clutch pedal and it will stay on the floor. Be forewarned that getting this spring out is a BEAR. It is very high under the dash with NO access. Use a long ubolt to compress the spring and it'll drop out.

Then adjust it properly and enjoy
1971 Cougar XR-7 Convertible 351C 4V, 4 speed (medium well done 😥)
1970 Torino Cobra J-Code 429CJ Shaker 4 Speed -1 of 22 black/red
2016 Mustang GT350 Chassis #2710
1988 Mustang 5.0 LX Coupe
2002 Porsche 911 3.6 Carrera
2017 Honda Civic Si
2017 VW Jetta GLI
2013 VW GTI (Unitronic Stage 1+ tune 260 HP / 295 ft/lbs - second fastest car in the fleet)

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1969XR7Vert
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Re: Clutch replacement suggestions?

#14

Post by 1969XR7Vert » 04 Dec 2017, 07:32

Cougar Bill wrote:
01 Dec 2017, 14:16
I used to run a diaphragm Center Force, till I had a few failures. Weird things.

I switched to McCloud and what a difference.

Here's the trick

The old school style was /is good for some people/applications, but for every day driving the only way to go is the following:

1. Remove the monster spring at the top of the clutch pedal under the dash.
2. Install a diaphragm style clutch of your choice.
3. Replace the spring for pedal return under the hood (just under master cyl.) with a
spring just strong enough the bring pedal back to top position.
4. Adjust clutch rod for proper clearance.

You now have a very drivable car that has the feel of a "new car" clutch!
Bill, you mean McLeod, right?
Isabel, the realization of a seven year long dream:



Canted--Texan on the351cforum: "One of my most impressive attributes is that.......a lot of people don't like me.....or the horse I rode in on"

Cougar Bill
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Re: Clutch replacement suggestions?

#15

Post by Cougar Bill » 04 Dec 2017, 08:17

Yep ..one to many taps of the keys!
1970 XR-7 428 Ramair 4 speed (now under restoration)
1970 Eliminator Boss 302
1969 XR-7 428 R-code 4 speed
1969 Std. 428 R-code C-6
1969 XR-7 Convertible 351 AOD
1969 XR-7 Convertible 428 C6
1969 XR-7 351 5 speed "RestoMod" New 525Hp "pacemaker"
https://www.youtube.com/watch?v=SBkOzr7N13Y
1968 XR-7 302-4v 4 Speed (J-code)
1967 XR-7 302 & AOD Green- Wife's Cat
www.cougarbill.com

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mo2872
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Re: Clutch replacement suggestions?

#16

Post by mo2872 » 04 Dec 2017, 08:18

R Code wrote:
01 Dec 2017, 10:04
Please quote HP figures whenever you reference your engine, along with 1/4 mile times. Pro Forma #s are fine, as long as you quote them whenever even remotely applicable.
Mea culpa, mea culpa, mea maxima culpa........

Expected HP is unknown at this time, but the times....oh, the times...........well, Barf should be going PLAID!!!
Gone plaid.jpg
Gone plaid.jpg (16.83 KiB) Viewed 474 times
T3
Yup, that guy, the hooligan.

Somewhere out there is a tree, tirelessly producing oxygen so you can breathe. I think you owe it an apology.

MyDads69Cugr
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Re: Clutch replacement suggestions?

#17

Post by MyDads69Cugr » 04 Dec 2017, 13:10

Thanks for the good advice, unaware about the pedal spring issue. Sachs kit is $114 at Rock Auto. Flywheel being resurfaced by engine rebuilder. Sounds like a plan!

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Local Hero
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Re: Clutch replacement suggestions?

#18

Post by Local Hero » 04 Dec 2017, 16:12

R Code wrote:
01 Dec 2017, 10:04
mo2872 wrote:
01 Dec 2017, 10:01
+1 on the Centerforce he linked. That was perfect for my 302, and one of these days, it should be perfect for my 351w/393, if I ever get around to finishing the install.....
Please quote HP figures whenever you reference your engine, along with 1/4 mile times. Pro Forma #s are fine, as long as you quote them whenever even remotely applicable.

LOVE IT!!!!! :whistle:
Mark
Buckeye Boys Rod & Custom - East
Anyone can restore a classic... it takes a real man to cut one up.

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