4 replies to this topic

[mad4classics]

Just taken my starter motor off and found the Bendix gear had 10 teeth. The one I'm replacing it with has 9 teeth!
Will they both fit the same flywheel starter ring ?

 

Found this topic:-

http://www.theminifo...-9-or-10-tooth/

 

Which implies I perhaps have  a Metro engine? Still need to know if the 9 tooth will fit if the engine is from a metro or should I replace like for like and get a 10 tooth?

Edited by mad4classics, 18 June 2016 - 06:11 PM.

[ACDodd]

Use the 9 tooth.

Ac

[mad4classics]

Use the 9 tooth.

Ac

Thanks, I will, but can you tell me why the 10 tooth bendix was used on the early Metro. I'm assuming it was with the same flywheel ring gear!

[ACDodd]

The battery cable runs are much shorter and the higher gear ratio makes the engine crank faster. 9 or 10 tooth mesh with the ring gear. Inertia starters are really on there limits with modern compression ratios. The later pre engaged type is much better able to cope with compression ratios over 9.25:1.

Ac

[mad4classics]

The battery cable runs are much shorter and the higher gear ratio makes the engine crank faster. 9 or 10 tooth mesh with the ring gear. Inertia starters are really on there limits with modern compression ratios. The later pre engaged type is much better able to cope with compression ratios over 9.25:1.

Ac

Thanks for the info I'll put the 9 in as you suggest. Raised questions in my mind when I saw the difference; a search of the web didn't throw up an answer.