09-19-2016, 10:25 PM
hers the seal chart for modern seal interchange
heres two sites that have them cheap
http://www.ebatmus.com/
for this site just plug in the seal number and look for what's written below
this is another source though generally they cost more.
https://www.applied.com/
Steve Welte
MC91/49/250 PTO NAPA 7414 seal
MC92 PTO PTO NAPA 6816
MC 91/92 Flyweel side NAPA 6763
I think thats right
Vince Hughes
If you have the 3/4 crank, the pto seal is the same as 91mc and 101mc. (numbers are down in the shop) These are different from all other Macs. If you have the tapered crank, 92/101 pto seal is the same.
SteveO
![[Image: 22947.jpg]](http://www.vintagekarts.com/forum/images/avatars/22947.jpg)
Not sure if Vince is responding to the question about the Mc 70 seal but just to be sure, a 101/92 PTO seal will not fit the 70 PTO side. The PTO side journal on the 70 is the same as all of the other pre 101 Super Series motors with an OD of around .785"... much bigger than the 101/92 cranks.
heres two sites that have them cheap
http://www.ebatmus.com/
for this site just plug in the seal number and look for what's written below
this is another source though generally they cost more.
https://www.applied.com/
Steve Welte
MC91/49/250 PTO NAPA 7414 seal
MC92 PTO PTO NAPA 6816
MC 91/92 Flyweel side NAPA 6763
I think thats right
Vince Hughes
If you have the 3/4 crank, the pto seal is the same as 91mc and 101mc. (numbers are down in the shop) These are different from all other Macs. If you have the tapered crank, 92/101 pto seal is the same.
SteveO
Not sure if Vince is responding to the question about the Mc 70 seal but just to be sure, a 101/92 PTO seal will not fit the 70 PTO side. The PTO side journal on the 70 is the same as all of the other pre 101 Super Series motors with an OD of around .785"... much bigger than the 101/92 cranks.