Page 1 of 1

Splined casing nut?

Posted: Fri Sep 20, 2024 6:55 pm
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.

Re: Splined casing nut?

Posted: Wed Sep 25, 2024 7:57 am
by Dawie
Like dual port engines have, offset oil cooler in the way there?
Something like this?
Image
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.

Re: Splined casing nut?

Posted: Thu Sep 26, 2024 8:31 am
by AlanH
Also known as rivnut. Can't say I've seen that on my bus.

Re: Splined casing nut?

Posted: Tue Oct 08, 2024 8:04 pm
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.

Re: Splined casing nut?

Posted: Mon Dec 02, 2024 1:23 pm
by VW-rules
Thanks for the pointers every one.