big problems!!!

fiveohhfox

fiveohhfox

Bronx Coordinator
#1
#1
ok so heres the deal i just changed my clutch (king cobra), flywheel,pressure plate,throw out bearing,steeda quadrant my whole rear end with 373 gears. now heres the problem after all was done i started the car and a loud chattering/grinding noise happened it was the presure plate grinding on the bell housing for some reason ford made 2 different bell housings mostly in the 89-90 models these required shaving for the king cobra presure plate to work says cj pony parts i didnt read this till after i was done so i dropped everything again to shave the bell housing down the noise went away alot its now very queit but besides that heres the big problem after as soon as i hit 4000 rpms i get really bad vibration drive shaft is new its a frpp aluminum im stuck please help

heres what cj pony parts say

*One thing to note of this clutch is that some 1986-1993 Ford Mustang 5.0L Bellhousings will possibly need to have the area "trimmed" in between the bottom/center and clutch release lever hole. Ford had two foundries make their bellhousings and only one has this issue, it is most common on 1989-1990 bellhousings. For some reason, the bellhousings from the one foundry had a raised "lip" that can cause contact/interference with the Pressure Plate. The area around the inside of the bellhousing needs to be trimmed approximately 8-10MM.
 
92BIGREDBEAST

92BIGREDBEAST

Well-Known Member
#4
#4
If its at idle, your pressure plate must be out of allignment or your clutch disk if it only happens near 4k. Are all the parts new? I would think it would vibrate at lower rps's i would think it would be something hevier like pressure plate no balanced? Sorry to see your having problems man. Hope ya figure it out.
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cobra20sc

cobra20sc

Well-Known Member
#5
#5
Double check that your flywheel has the right balance weight on it. If its correct, it ould be the pressure plate. Was there much taken off the pressure plate when in hit the bellhousing?
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jkstang78

jkstang78

Well-Known Member
#6
#6
I agree with Cobra20 on it could be the counter weight. When you put the clutch in did you use the Clutch alignment tool? If you still have a stock balancer on the front. If I remember right. Then you should be using a 50 oz weight on the flywheel.
 
dsblk93gt

dsblk93gt

5.0 Moderator
#7
#7
Yep 50oz flywheel from '82 on up and before that it was 28oz. I am hoping wherever he got the flywheel from sold him the right one.

Make sure the dowels are installed in that flywheel too because if not it will vibrate, they keep the pressure plate centered on the flywheel!
 
fiveohhfox

fiveohhfox

Bronx Coordinator
#8
#8
All parts are brand new I ordered a 50 oz from cj pony hopefully that's what they sent the algniment tool came with the kit I have changed the balancer in th front but its an 50 0z as well I'm so stuck and I deff don't have big money for shops lol thanks for the help guys
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G

Goeasy

New Member
#11
#11
If this is happening while the car is moving... I had the same problem. I took the brake drums off and pried the e-brake arm back and the vibration went away. If it is happening at a stand still then I don't know. GL
 
MaximumRisk

MaximumRisk

NYC Regional Coordinator
#14
#14
fiveohhfox said:
Gregg please Ill buy u beer ciggs w.e. I'm so desperate
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tell him you will have a big booty, asian, midget stripper waiting for him. he'll be there in a heart beat! :D check the part number on the flywheel. i had a vibration problem once that turned out to be a wrong balance flywheel. the box had the right part number, but the flywheel inside was not the right one. i guess a packaging error.
 
MaximumRisk

MaximumRisk

NYC Regional Coordinator
#16
#16
When you took removed the transmission to shave the bellhousing did you notice any physical damage to the pressure plate? also, what's the flywheels part number? what brand?
 
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