Judder on down change 3rd to 2nd?

[Lewis S2]

Just wondering if anyone has had a similar issue? Seems to be a common topic on Rennlist. The judder only usually happens when down shifting from 3rd to 2nd - seems to help with a bit of rev matching. Any ideas or successful fixes??

 

[Dan944t]

Hi Lewis ,

could be wrong but could thid this not be a bit of clutch slip at higher revs as your rpm will be allot more downshifting from 3rd to 2nd? Compared to other gear downshift?

i ciesed up my first non turbo 944 engine down shifting from 3rd To second which induced high revs and bwcuae I stupidly had very low oil in the engine and my oil warning light didnt work (but thats a different story all together !)

lets see what others say??

atb
daniel

 

[Diver944]

Could be a sign of the rubber centre in your clutch starting to deteriorate, do you know how old your clutch is, or how many miles it has done?

Mine did this for over 10 years (worse when hot), but after a new clutch last summer it's lovely and smooth now.

 

[Lewis S2]

Could be a sign of the rubber centre in your clutch starting to deteriorate, do you know how old your clutch is, or how many miles it has done?
Mine did this for over 10 years (worse when hot), but after a new clutch last summer it's lovely and smooth now.

Yes that's what I thought I'm not sure the currently mileage on the clutch, initially I thought it might be a warped flywheel but looks like many have found it to be the rubber centre deteriorating. Some have replaced their clutch with a centre spring type which apparently makes the problem worse. Do you know where I would be able to find the part number for the correct clutch??
Many thanks

 

[blade7]

I've never heard of the flywheel warping on an S2.

 

[Lewis S2]

Ok cool so maybe just clutch plate and new release bearing??

 

[AcC8braman]

Could be a sign of the rubber centre in your clutch starting to deteriorate, do you know how old your clutch is, or how many miles it has done?
Mine did this for over 10 years (worse when hot), but after a new clutch last summer it's lovely and smooth now.

Yes that's what I thought I'm not sure the currently mileage on the clutch, initially I thought it might be a warped flywheel but looks like many have found it to be the rubber centre deteriorating. Some have replaced their clutch with a centre spring type which apparently makes the problem worse. Do you know where I would be able to find the part number for the correct clutch??
Many thanks

Hi,

I had this exact same problem after I changed to the new style clutch. The transaxle mount fell to pieces so replaced with a semi solid mount and even worse!! So got a porsche orig and worked a treat ( also found a small crack in the bell housing which was welded ) Drives perfect now