hi guys, i have just completed an auto-to- manual swap. i have have used a different flywheel as the auto doesnt take a clutsh but I'm finding that the car vibrates alot. it never vibrated before the conversion... help?

Could be coming from tailshaft. Guessing you changed it during your convertion? Worn uni joints, missing balance weights or bent?

I hope you put the flywheel on correctly, and tightened it up....if not you may be in for a world of hurt

i have pulled out the gear box 3 times trying to find the problem. i did change the tail shaft... the uni joints are in good condition and the weights are there but the problem must be fly/clutch... because it vibrates when your not moving and foot down on the clutch. when you rev it up it vibrates like mad! i will have a nother look at it tomorow and tinker with the flywheel.

If it happens while not moving, then yes it has to be flywheel/clutch....Problem solving, replace suspect part, with known good part. IE, swap the flywheel and clutch for one that you know is in good working order (doesn't vibrate) and work your way through until you solve the problem.

hmmm.i really didnt want to do that but your right. the fly came off a working motor and the clutch is new out of the box. are the fly's balanced with their motors?

Did You remember to put a spigot bearing into end of crank?

Not putting a spigot bearing in shouldn't make it vibrate, we converted my mates KE35 from auto to manual without one, and it was ok.

yea put a spigot bearing in. how far do you drift them in? the 4k i took the fly and gearbox off had the bearing at the same height as the end of the crank but it looks like they can go deeper.

Edited November 22, 200718 yr by cut03

Push it in till it stops. Use a socket that that is the right diametre to sit on the out wall of the bearing (bit that contacts the crank) and lightly tap it with a hammer until it won't go any further.

 

If the bearing was slightly crooked, this could give you a vibration, but you would think that it would centre itself pretty quick with centrifugal force if this was the issue.

i thaught that the spigot bearing could be making the vibration. hmmm. is thee any way that i could have put the fly on wrong or that its not seated right etc?

Make sure all contact surfaces are 100% clean when mounting. Cross tighten when you torque it. 6.2k for fly 2.1k for clutch

 

I belive the flywheels are balanced seperatly. Has Yours been lightened or resurfaced?

 

Were all the dowels in the flywheel when you mounted the pressure plate?It bolted on without any drama? If you got accesss to a

 

magnetic stand dial guage, You could stick it on to see whats going on. Is there any difference if clutch is engaged or not?

 

(sure its running on all 4? )

Make sure all contact surfaces are 100% clean when mounting. Cross tighten when you torque it. 6.2k for fly 2.1k for clutch

 

I belive the flywheels are balanced seperatly. Has Yours been lightened or resurfaced?

 

Were all the dowels in the flywheel when you mounted the pressure plate?It bolted on without any drama? If you got accesss to a

 

magnetic stand dial guage, You could stick it on to see whats going on. Is there any difference if clutch is engaged or not?

 

(sure its running on all 4? )

how bad is this vibration will it ripple a cup of water?

For the ultimate smooth engine balance flywheel bolted onto the crank in a lathe. IF it was a trimatic they run a guide in the end of the crank to locate the torque converter is that still in ?

 

or maybe some back yarder has machined the flywheel clutch face or the engine was dropped.

sorry for the delay...went on holidays... it was a trimatic and whats this guide thing you talk of? it hasnt been lightened.and the dowls were all there and everything was clean. its running on all 4 and it doesnt matter if the clutch is engaged or not and theres no pedal pulsing or anything like that,

Guys this is my first post, but I have a simular problem, I have a 5K + 5 speed in a Morris Minor Ute, problem is I have a

shocking shudder when letting out the clutch in first gear if the car is on a hill, the whole car shakes its back side off, I have spent all day

changing the flywheel to one which has been machined, I took it for a run and it is exactly the same.

I have a new clutch and pressure plate, new uni joints.

So could it be a stuffed clutch and pressure plate or is there a known problem with the 5 speed gear boxes?