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Discussion Starter #1
Hi just wondering if anyone knows if a Gq starter motor will fit a mk 3.3 turbo motor. They look so alike and gq starter motors a cheap and easy to get.
 

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Only 1 way to find out :naughty:

Perhaps take yours so you can compare side by side before buying. Make sure they have the same amount of teeth and gear size I suppose. Also check the gears 'push out' the same distance to engage with the flywheel. And of course, check the bolt patterns are the same.

It would be great if you could post back with your findings!
 

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No..

GQ TD42 Starter
Flange Dia:105mm
Mount center A:140mm
Mount center B:115mm
Mount center C:80mm
Pinion at rest:10mm
Pintion Dia:40mm
No. Teeth:11th

MQ/MK SD33 Starter
Flange Dia:105mm
Mount center A:139mm
Mount center B:138mm
Mount center C:93mm
Pinion at rest:12mm
Pintion Dia:40mm
No. Teeth:11th

As you can see they are pretty close except the mounts. Would work if you could hold it there but it wont bolt up. Hope that helps.
 

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Indeed I can

MQ/MK L28 Starter (8th version)
Flange Dia:82mm
Mount center A:110mm
Pinion at rest:8mm
Pintion Dia:28mm
No. Teeth:8th

MQ/MK L28 Starter (9th version)
Flange Dia:82mm
Mount center A:110mm
Pinion at rest:7mm
Pintion Dia:29mm
No. Teeth:9th
^^Two versions of the L28 starter, I think different gearbox/flywheel

MQ/MK P40 Starter
Flange Dia:82mm
Mount center A:105mm
Pinion at rest:31mm
Pintion Dia:29mm
No. Teeth:9th

GQ RB30 Starter (8th Version)
Flange Dia:82mm
Mount center A:110mm
Pinion at rest:8mm
Pintion Dia:28mm
No. Teeth:8th

GQ RB30 Starter (9th Version)
Flange Dia:82mm
Mount center A:110mm
Pinion at rest:10mm
Pintion Dia:29mm
No. Teeth:9th
^^ Again two versions of RB30. Same measurements as MQ L28 but the nosecone in different position. Does not interchange

GQ TB42 Starter
Flange Dia:82mm
Mount center A:110mm
Pinion at rest:12mm
Pintion Dia:35mm
No. Teeth:9th

All pretty close measurements but i dont believe any are interchangable. Hope thats what your after Nerok. If I missed any let me know
 

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Great info. It will definitely help anyone looking in the future.

Are you getting this info from a parts catalogue? Are the MQ starter motors used on any other vehicles? Sometimes a part for car-A is worth a ton, but the same part for car-B is not, even though it is the same part!

Edit: Are you sure SD33 only has 1 starter motor spec? Did the flywheel change size when the bigger clutch was introduced?
 

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Both SD33 and SD33T use the same starter motor. Flywheel a bit different for turbo and later models but still same diameter and teeth. I have both sitting at home.

They use the SD33 in the International Scout and also some early Forklifts but I have the same part number listed for both Patrol and Scout.
 

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Discussion Starter #8
Thanks mate thats a shame because the gqs are so much cheaper.
But on the plus side I got mine reconditioned so it should be good now. I just have to do the rear main which looks like a mission in its self.
 

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Yea i know what you mean. Ive got 3x12v starters that im going to rebuild and keep n the shed for spares lol
 
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