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Upgrading OE Clutches To McLeod Performance Parts - Clutch Can Horse Tamer

Upgrade Oe Clutches Pressure Plate
As we said, this clutch was... 
   
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Upgrade Oe Clutches Pressure Plate
As we said, this clutch was used hard, and after only a few months it was completely haggard. The heat scoring on the pressure plate was an obvious sign of the slipping we were all too aware of.
Upgrade Oe Clutches Flywheel Damages
The flywheel was also showing... 
   
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Upgrade Oe Clutches Flywheel Damages
The flywheel was also showing signs of damage, not just heat glazing and scoring, but some serious-looking heat cracks riddling the surface. It may clean up with machining, but that new steel wheel comes with a lot of peace of mind.
Upgrade Oe Clutches Mcleod Sfi Flywheel
The new McLeod SFI certified... 
   
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Upgrade Oe Clutches Mcleod Sfi Flywheel
The new McLeod SFI certified flywheel just bolts in place of the old one. We used LockTite on the bolts and torqued it to 55 lbs.-ft. Notice that we have our new headers in place here: a set of tti 1 5⁄8- to 1 3⁄4-inch step pipes. These tuck up much tighter than our old headers, so they aren't as likely to get torn up on the street.
Upgrade Oe Clutches Mcleod Clutch
The McLeod B&B/Long clutch... 
   
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Upgrade Oe Clutches Mcleod Clutch
The McLeod B&B/Long clutch and disc bolt in just as easily as the OEM components; no tricks here. Just pull the clutch cover down against the disc with the bolts, bringing them down a little at a time against the pressure plate's spring tension in a criss-cross pattern until the cover is seated. Then torque the 3⁄8-inch attaching hardware to 30 lbs.-ft. Again, we used LockTite. Make sure a clutch alignment tool or an old input shaft is used to center-up the disc while the clutch is being installed; otherwise, the trans will never go in.
Upgrade Oe Clutches Dial Indicator
Next, the bellhousing was... 
   
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Upgrade Oe Clutches Dial Indicator
Next, the bellhousing was bolted on, and we rigged a dial indicator to check the runout of the bellhousing pilot bore. We have a special clamp, which mounts to the pressure plate, but a regular magnetic base can be used if the bellhousing is mounted without the clutch installed. Make sure the indicator is centered in the bore and at a right angle to the surface for an accurate read. Read the indicator while the crank is spun through a full revolution, and note the runout. McLeod recommends a maximum runout of .008 inch (the total indicator reading is double the runout or .016-inch TIR max here). We were within specs at .006-inch TIR. If correction is required, Mopar Performance has an offset block dowel package under PN P4120383. The bellhousing should also be checked for parallelism by rigging the indicator to read off the transmission-mounting surface just outside the pilot hole. The max here is .006-inch total indicator reading. Correction for parallelism error is by blanchard grinding the bellhousing (the best fix), or using shimstock between the housing and engine block (it will get the job done).
Upgrade Oe Clutches Shift Fork
With the clutch installed... 
   
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Upgrade Oe Clutches Shift Fork
With the clutch installed and everything checking out, the transmission can go back in. The shift fork and throw-out bearing should be loaded into the bellhousing and the transmission input shaft threaded through and into engagement with the clutch. The trans has to be lined up to go in, so work the jack to align the transmission square with the bellhousing. Some long bolts (arrow) or studs in the mounting holes will help line things up. If the splines on the trans' input shaft don't line up with those of the clutch, the transmission will hang up about 1 1⁄2 inches from all the way in. Insert a yoke in the output side of the trans, put it in gear and turn it until the splines line up. Never try to squeeze the transmission to the bellhousing by pulling it on with the mounting bolts.
Upgrade Oe Clutches Reinstall Linkage
With the transmission bolted-up,... 
   
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Upgrade Oe Clutches Reinstall Linkage
With the transmission bolted-up, reinstall the crossmember, shifter and linkage, driveshaft, clutch linkage, and the minor hookups. Clutch adjustment is accomplished by measuring the amount of clutch departure, or the clearance between the disc and the pressure plate/flywheel. While an assistant depresses the clutch fully to the floor, the gap between the flywheel and the disc is measured with a feeler gauge. McLeod recommends .050 inch for a B&B/Long clutch like ours, .040 inch for a regular B&B, and .030 inch for a diaphragm clutch.
Upgrade Oe Clutches Threaded Pushrod
Clutch adjustment is made... 
   
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Upgrade Oe Clutches Threaded Pushrod
Clutch adjustment is made at the threaded pushrod between the bellcrank and shift fork. Wind the adjustment nut out, increasing the pushrod's effective length to increase departure or shorten the effective length to decrease clutch departure. Once it's set, replace the clutch housing's cover plates, and burn rubber, not disc.
McLeod Industries
1600 Sierra Madre Cir.
Placentia
CA  92870
(714) 630-2764

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