Splined casing nut?

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VW-rules
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Splined casing nut?

Post by VW-rules »

Hi there. It's been a while since I was last here :shock:

Quick question. Of the 4 engine mounting bolts, two are at the bottom, one comes through from the starter motor and the 4th bolt screws into a splined nut that is pressed into the engine case. What is that 4th splined nut called and where can I get one?

It's a bitch trying to use a regular nut on there. Thanks. Cheers.
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Re: Splined casing nut?

Post by Dawie »

Like dual port engines have, offset oil cooler in the way there?
Something like this?
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https://boltandnut.co.za/product/10mm-a ... ge-flange/
Might be called "clinch nut" or "press nut" or "pressed nut". For use in magnesium type 1 casing application i would image a wide flange version would insure best support.
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Re: Splined casing nut?

Post by AlanH »

Also known as rivnut. Can't say I've seen that on my bus.
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Re: Splined casing nut?

Post by Tony Z »

I dont think you can buy those particular nuts loose.
Its a splined nut the is inserted into the case with a press fit - kinda like splined wheel studs.

Just leave that particular bolt/nut off and keep the other three.
I know of at least one engine with over 100hp that only has the three installed.
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Re: Splined casing nut?

Post by VW-rules »

Thanks for the pointers every one.
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