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Grant Baker

Knock Sensor 10mm

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Hey,

Anybody know of a Bosch Style "donut" Knock Sensor with a 10mm hole in it rather than 8mm?

Currently I'm having some step down studs made, but would love to do it with a simple sensor change instead!

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Hi Grant,

If you have a 12mm hole, Toyota make these studs available for a few dollars, they're very commonly used on Toyota OEM applications to mount 8mm Bosch style sensors to an M12x1.25 threaded holes. The part numbers are:-

90126-08039 or 90126-08046 

Cheers,
Matt

motoiq-NJ6A4630-L.jpg

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Thanks,

I drilled a sensor today and tried it before and after. No difference at all when using a 10-8mm stud and 8mm hole, or using an M10 bolt and drilled sensor.

Same knock levels, same background noise etc etc.

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Some VW's use an odd M8 to M10 stud, cant seem to find them now.

 

Or it seems you can get adapters for motorbike mirrors ( one of this pair seems to have a LH M10 male thread, the other a RH male thread )

https://www.amazon.co.uk/YAMAHA-MIRROR-ADAPTORS-MIRRORS-RIGHT/dp/B002RB107M/ref=sr_1_4?s=automotive&ie=UTF8&qid=1548978673&sr=1-4&keywords=8mm+to+10mm+thread

 

Doesnt say thread pitch though, but ti does look like standard as opposed to typical Jap fine thread.

 

This also looks same idea.

 

https://www.amazon.co.uk/Ryde-Motorcycle-Mirror-Thread-Adapter/dp/B00CJD1P5A/ref=pd_sbs_263_2?_encoding=UTF8&pd_rd_i=B00CJD1P5A&pd_rd_r=e25b6f29-25b2-11e9-ad2c-0f2b64b4e14a&pd_rd_w=Kdomj&pd_rd_wg=xwJnf&pf_rd_p=18edf98b-139a-41ee-bb40-d725dd59d1d3&pf_rd_r=K31Z623BF7RP05FKPCES&psc=1&refRID=K31Z623BF7RP05FKPCES

 

Or helicoil the M10 hole to M8. It'll never hold a strong fixing, but perfectly strong enough for a knock sensor. Or get some M10 threaded rod and some dies and thread it down to M8.

 

 

 

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