Speedi-sleeve for MFI cam drive

[Arne2]

Looks like my oil leak at the cam seal for the MFI drive pulley is back. After a closer inspection, I think there is a nick in the seal surface on the cam shaft. I see that our host offers a Stoddard Speedi-sleeve for this, but I suspect Stoddard just re-boxes a NAPA, National or Timken. I'd rather pick one up locally instead of waiting for one to be shipped. When I put my ancient German-made non-digital micrometer on the end of the shaft, it reads 1.375", which is 34.925 mm. The 99139 part number in the brands above are to fit 1.375-1.381" (34.930-35.080 mm), the 99138 1.371-1.377" (34.820-34.980 mm).

Which is correct? If I trust my mike, I'd get the smaller 99138. But if the shaft is really 35.000 mm (as seems more German), I need the 99139.

[356RS]

IIRC there is room for another seal on top of the original one in there.

[Arne2]

Thanks, Mark, but I've already tried the second seal to no avail. Pretty sure I'm going to need to sleeve the shaft.

[Arne2]

No input on which I need? Those 2 part numbers don't have much overlap in fitment.

[356RS]

Arne, There not that expensive so I would get both and find out which one is correct for you fitment.

[Arne2]

Calibrated digital calipers (2 different ones) measure shaft between 35.008 and 35.013 mm. So I will pick up a 99139 sleeve tomorrow morning.