20 replies to this topic

[jime17]

Hi.

Is there a difference in the 998 ring gear for pre engaged starter motors in a metro and a mini?

I've just done a compression test on an engine I bought that guesswork site says started life in a metro.

I used the starter motor from my existing mini engine and it seemed to turn it over ok. I was able to test the compression.

Is there a difference?

Edited by jime17, 20 November 2018 - 10:47 PM.

[nicklouse]

the Verto flywheel should have the same teeth whatever car it came from.

 

but you should count the teeth to be sure. 129 IIRC

[jime17]

Yes I believe it is 129. I'll count tomorrow.

The mini it came from is an auto. The same starter is listed for auto and her to so I have to assume they are the same.

[nicklouse]

also check the teeth on the starter.

[jime17]

What should I be looking for?

[Bat]

Hi,

Just count them, a different number of teeth on the ring gear needs a different number of teeth on the starter.

Cheers 

[jime17]

Hi.

What I mean is -

129 teeth on ring gear needs 9 teeth on starter? Is that right?

[jime17]

Right...

Counted teeth on ring gear. 107.

The clutch cover and transfer case are verto as they have the slave cylinder mounting bracket points.

Any ideas what's happened?

[ACDodd]

Ok indeed to clear this up.

Both inertia and pre engaged starters have 9 tooth pinions. The metro version of the Inertia starter uses a 10 tooth pinion.

Both inertia types mesh with the 107tooth ring gear.

The 129tooth ring gear is exclusively for the pre engaged starter motor using the 9 tooth pinion.


The pre engaged starter is not compatible with the 107 tooth ring gear.

Ac

[jime17]

Thanks ac. So is it possible I have a verto clutch with a 107 tooth inertia type ring gear?

Edited by jime17, 21 November 2018 - 07:02 PM.

[nicklouse]

Thanks ac. So is it possible I have a verto clutch with a 107 tooth inertia type ring gear?

yes but it would have an inertia starter. the teeth are chamfered on the side the pinion engages. so inertia has the chamfer on the inner wing side and the pre engage has the chamfer on the engine side.

[jime17]

Yes that makes sense. So my options are get an inertia starter and separate solenoid or change the ring gear for the 129 tooth type and use my existing pre engaged starter?

Is that right?

Sorry for all the questions.

Edited by jime17, 21 November 2018 - 07:43 PM.

[Boycie]

Yes that makes sense. So my options are get an inertia starter and separate solenoid or change the ring gear for the 129 tooth type and use my existing pre engaged starter?

Is that right?

Sorry for all the questions.

 

That is correct.  The pre-engaged starter is an improvement on the inertia type, but two of my cars have (very old!) inertia starters and I've never had any trouble with them.

[nicklouse]

Right...

Counted teeth on ring gear. 107.

The clutch cover and transfer case are verto as they have the slave cylinder mounting bracket points.

Any ideas what's happened?

they are the same for both the verto and pre verto the verto had an extra metal bracket. and the timing hole was not broken out. as the verto did not have timing marks on the flywheel.

[jime17]

That is correct. The pre-engaged starter is an improvement on the inertia type, but two of my cars have (very old!) inertia starters and I've never had any trouble with them.

Ok thanks Boycie. Seems like changing the starter is the simplest/cheapest method then.

they are the same for both the verto and pre verto the verto had an extra metal bracket. and the timing hole was not broken out. as the verto did not have timing marks on the flywheel.

Think I better take the wok off and check Nick.

It does have the short arm though so I'd be surprised if it was not a verto...

Edited by jime17, 22 November 2018 - 01:00 PM.