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Joined: May 2011
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Originally Posted by LightSpeed
Originally Posted by Obie
Yes the clutch was and still is working fine. I have only seen yours, mine and the one in Phil's video and they are all fitted the same way round.


I looked at Phils video and did not see text on the disc, another oddity. I puzzled about the three extraction/draw bolts in the plate that hole the Centa into its bellhousing. Phille said they are 3/8 BSF - 20. WOW, finding those in the USA is going to be tough. They are close to 10mmX1.25 but apparently not, according to master Phil.



The extraction bolts required are in fact M10x1.25, I checked the threads when I did mine. I guess Phil used 3/8 BSF as he had those to hand and they will work. I investigated because it did not make sense that they would be imperial when all other threads in that area of the clutch and compensator are metric


2021 M3W
2013 M3W - Sold
1971 4/4 2 Seater
1934 Sports
Rog G #718242 16/09/21 03:37 PM
Joined: Feb 2019
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Originally Posted by Rog G
Originally Posted by LightSpeed
Originally Posted by Obie
Yes the clutch was and still is working fine. I have only seen yours, mine and the one in Phil's video and they are all fitted the same way round.


I looked at Phils video and did not see text on the disc, another oddity. I puzzled about the three extraction/draw bolts in the plate that hole the Centa into its bellhousing. Phille said they are 3/8 BSF - 20. WOW, finding those in the USA is going to be tough. They are close to 10mmX1.25 but apparently not, according to master Phil.



The extraction bolts required are in fact M10x1.25, I checked the threads when I did mine. I guess Phil used 3/8 BSF as he had those to hand and they will work. I investigated because it did not make sense that they would be imperial when all other threads in that area of the clutch and compensator are metric

When I put the tool for testing sizes I came up with that size too! It is sort of odd they didn't use the bellhousing bolts or something else that just came out since it would have been close at hand.


2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)

Joined: May 2011
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Originally Posted by LightSpeed
Originally Posted by Rog G
Originally Posted by LightSpeed
Originally Posted by Obie
Yes the clutch was and still is working fine. I have only seen yours, mine and the one in Phil's video and they are all fitted the same way round.


I looked at Phils video and did not see text on the disc, another oddity. I puzzled about the three extraction/draw bolts in the plate that hole the Centa into its bellhousing. Phille said they are 3/8 BSF - 20. WOW, finding those in the USA is going to be tough. They are close to 10mmX1.25 but apparently not, according to master Phil.



The extraction bolts required are in fact M10x1.25, I checked the threads when I did mine. I guess Phil used 3/8 BSF as he had those to hand and they will work. I investigated because it did not make sense that they would be imperial when all other threads in that area of the clutch and compensator are metric

When I put the tool for testing sizes I came up with that size too! It is sort of odd they didn't use the bellhousing bolts or something else that just came out since it would have been close at hand.

I agree but presumably it was felt that the finer pitch was more suitable for jacking the plate out of the intermediate bell housing.


2021 M3W
2013 M3W - Sold
1971 4/4 2 Seater
1934 Sports
TimG #718287 16/09/21 07:37 PM
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OK, just tried the 10x1.25mm and they worked great, could not ask for a better fit.

This is the clutch orientation from my dealer and it is the opposite of what is labeled on the disc, but it makes sense. The side that sticks out away from the clutch pads the most goes toward the flywheel for clearance reasons.
[Linked Image]


It appears that I am doing this in the nick of time! 4700 miles on the odometer.

[Linked Image]

and all the things that look like failure points are actually bits of the ground up missing chunk that appear to have heat welded themselves to the roller and the other good (at least appear to be) rollers.
[Linked Image]

[Linked Image]

[Linked Image]

Did anyone elses rollers appear to have the welded on bits of rubber on the rollers that did not fail?? These pieces came off easily with finger nail action and felt sticky.


2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)

TimG #718309 16/09/21 10:43 PM
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As an FYI, I managed to get the engine out without cutting or drilling anything. Just the right tools in the right place using an overhead lift, could have been a portable one, and access under the vehicle which could have been jack stands.


2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)

TimG #718311 16/09/21 10:54 PM
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D
L - Learner Plates On
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L - Learner Plates On
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Those are a strange bolt here in the US. Luckily at my old job they have a foundry/machine shop and hardware store. They're able to order a lot of the odd stuff that I need. I got 5 bolts for $ 10

Last edited by Dutch; 16/09/21 10:54 PM.

Dutch Junge
194 Mound St
Logan, OH USA 43138

2012 3 Wheeler
1980 + 8
Dutch #718314 16/09/21 11:50 PM
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Originally Posted by Dutch
Those are a strange bolt here in the US. Luckily at my old job they have a foundry/machine shop and hardware store. They're able to order a lot of the odd stuff that I need. I got 5 bolts for $ 10


The bolts are 10mm X 1.25 pitch. perfect fit purchased at Ace Hardware.


2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)

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