Starter Motor

Post by **bmcecosse** » Sun Mar 30, 2008 10:47 pm

Some starters seem to have 9 tooth Bendix - and some have 10. Does it matter ?

Post by **Matt** » Sun Mar 30, 2008 10:53 pm

I think minis/fwd have one and minors/rwd have the other... I might be wrong though

Post by **bmcecosse** » Sun Mar 30, 2008 11:30 pm

Yes -I think that's right - but will one fit the other!

Post by **leyther8008** » Mon Mar 31, 2008 9:05 am

You would think that one woudnt mesh properly, there has to be a ratio of ring gear to starter pinion of an whole number ' i think 10 to 1 otherwise it will eventually wear out. however maybe the 'mesh' between the two is intentionally loose enough to not matter for the time the engines cranking.

Post by **FrankM83** » Mon Mar 31, 2008 7:49 pm

when I took my starter for recondition he gave me one with 10 mine was with 9 he said it wouldn't matter, but when we came to fit it we found the holes for the bolts didn't quite line up! so I took ti back and he change the face and back to 9 teeth

Post by **alanworland** » Mon Mar 31, 2008 11:05 pm

Presumably the 10 tooth pinion would turn the engine faster if the motor could support the extra load?

Post by **bmcecosse** » Tue Apr 01, 2008 11:24 am

Certainly the Mini starter doesn't 'quite' fit on the bolt pitches - but easily sorted with a round file! The starter itself fits snugly into the backplate ok. Yes - I assume 10 would crank faster - but only if sufficient amps. So - what is the original Minor fitment - 9 or 10 teeth ? From above - looks like 9 ??

Post by **MoggyTech** » Tue Apr 01, 2008 11:36 am

The starter I replaced (broken bendix) was 10 tooth. The replacement from ESM was 10 tooth, and one I got from Livingston Autoparts as a spare is 9 tooth. Apparently they both work, but the nine tooth has slightly different winding turns so spin speed is the same as 10 tooth. All very confusing (for me anyway)

Post by **FrankM83** » Tue Apr 01, 2008 12:23 pm

well I've broken 3 Minors in my life for spares and a mini the starters I got are all 9 tooth except 1! which is 10 tooth one the Minors I broke were pick-ups and the van I'm restoring has a 9tooth starter maybe LCV had a 9 tooth? maybe the Low compression engines?