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Clutch Disengagement Issue - Cosworth Bda Mini

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#16 stoneface

stoneface

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Posted Today, 08:14 PM

You can work out the correct spacer thickness without taking the whole engine apart. It just takes time and patience.

 

This is what I would do.

 

Assuming you currently have no end float.

 

1) Take the nut off and measure the depth from the flywheel boss to the end of the crank. Keep a note of this for reference.

2) Make a slightly thinner spacer than you currently have

3) Re assemble the flywheel and thinner spacer with plasti-guage between spacer and primary gear. I'd put plasti-guage in 2 place 180 degrees apart.

4) Put on flywheel and torque up flywheel nut to what you previously torqued it to.

5) Take nut off and measure the depth from flywheel boss to end of crank. Hopefully it is the same as before. Make a note. Might want to make a spider spacer for setting it later.

6) Remove flywheel and see what the plasti-guage measures the end float as.

 

If the plasti-guage isn't marked then make a thicker spacer and repeat.

 

If you currently have some endfloat then just use the spacer you have with plasti-guage and work from there.

 

Repeat until you have the required endfloat.

 

Apologies if you know this.


Edited by stoneface, Today, 08:18 PM.


#17 Exminiman

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Posted Today, 08:40 PM

 

If it is the flywheel pinching the primary gear, could you remove some material from back of fly wheel?

 

Great car by the way, is it a BDH?

 

Thanks! Yes, it is a BDH. Not sure why I said 'BDA'. It has a very short stroke crank. 

If I can ever get it in to gear (!) it should rev right round towards 10K.

 

Not being pedantic, I would call it a BDA generally, but have been looking for a BDH to put in a mini for a while, not many about, lucky you.  Not in Downton club are you, thought might of seen car at Prescott. For me this is the ideal hill climb mini, would be great to see it ( and you of course ) performing to its full potential 


Edited by Exminiman, Today, 08:46 PM.






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