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 Gearbox mount bolt
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Redsaabs
Starting Member

United Kingdom
33 Posts

Posted - 03 Mar 2018 :  19:42:51 Show Profile Reply with Quote
Hi chaps,

Please can someone advise me what size this bolt is on the 96 V4......thanks Paul

Edit.....part number would be helpful

Blu 72 96v4
Silver 84 99GL
Blu 84 99GL
Red 84 900 8v inj
Grey 91 900 16v

Edited by - Redsaabs on 03 Mar 2018 20:01:38

stevebod
V4 Fanatic

United Kingdom
313 Posts

Posted - 03 Mar 2018 :  20:45:50 Show Profile Visit stevebod's Homepage Reply with Quote
Hi Paul,
I can help a little bit.
If it's the thread you need it appears to be 3/8" UNC.
Not sure what length the bolt is though.
I bet someone else will be along shortly that knows better than me.
Steve.
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Redsaabs
Starting Member

United Kingdom
33 Posts

Posted - 03 Mar 2018 :  21:16:03 Show Profile Reply with Quote
Hi Steve,

That's great.........l was hoping it was 3/8............l had tried 5/16............will need to get my hands on a 3/8 UNC

Many thanks, Paul

Blu 72 96v4
Silver 84 99GL
Blu 84 99GL
Red 84 900 8v inj
Grey 91 900 16v
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Zagato
V4 Mad

United Kingdom
755 Posts

Posted - 04 Mar 2018 :  11:49:43 Show Profile Reply with Quote
I have the bolt in my hand, it is roughly 44mm long and a 9/16 spanner fits it. I have tried a 3/8th bolt but the thread is to close together to screw in! Maybe that's because it is UNF, edit it was UNF for a Land Rover rebuild not UNC. Sorry not very up on bolt sizes. On the head of the bolt it says UNC 88 BUFO!



Edited by - Zagato on 04 Mar 2018 11:52:05
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melle
V4 Guru

United Kingdom
2541 Posts

Posted - 04 Mar 2018 :  13:25:02 Show Profile Visit melle's Homepage Reply with Quote
It's 3/8" UNC bolt, not sure of the length and I don't have access to the spreadsheet at the moment.

Zagato, are you sure what you had in your hand was not an M10 bolt, which is quite close to 3/8" UNC? 88 = 8.8 tensile strength. This type of indication is normally found on ISO metric fasteners, on SAE stuff tensile strength grade is usually indicated as a certain number of lines on the bolt head (three for grade 5 and six for grade 8 iirc).

www.saabv4.com
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Zagato
V4 Mad

United Kingdom
755 Posts

Posted - 04 Mar 2018 :  13:46:43 Show Profile Reply with Quote
Hi Melle, yes the 3/8th that did not fix is a UNF from my spares. The one that came from the geabox had UNC 88 BFO on it which a 9/16 spanner fits. Unless I have mixed up the latter it should be original as the gearbox has never been out and it fits fine! Presume that is 3/8th UNC! Can we talk about polishing or something cos I,m lost LOL!


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Redsaabs
Starting Member

United Kingdom
33 Posts

Posted - 04 Mar 2018 :  13:49:34 Show Profile Reply with Quote
Thanks chaps......l have a copy of the spreadsheet which slightly confused me because it says you need 8 bolts ilrc and it made me think it may be referring to the size of the bell housing bolts........for which there are not any sizes shown. But please don't get me wrong ....it's a great spreadsheet.......cheers Paul

Blu 72 96v4
Silver 84 99GL
Blu 84 99GL
Red 84 900 8v inj
Grey 91 900 16v
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Redsaabs
Starting Member

United Kingdom
33 Posts

Posted - 04 Mar 2018 :  13:57:41 Show Profile Reply with Quote

Can l ask one more question ..............what is the size of the three bolts that hold the mounting in place ?

Thanks Paul

Blu 72 96v4
Silver 84 99GL
Blu 84 99GL
Red 84 900 8v inj
Grey 91 900 16v
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melle
V4 Guru

United Kingdom
2541 Posts

Posted - 04 Mar 2018 :  13:57:54 Show Profile Visit melle's Homepage Reply with Quote
Bell housing to engine bolts are M10. Ill upload a completed/ corrected/ updated spreadsheet to my website at some point.

www.saabv4.com
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Redsaabs
Starting Member

United Kingdom
33 Posts

Posted - 04 Mar 2018 :  14:20:37 Show Profile Reply with Quote

Melle.......that will be great.......l,ll amend my copy which takes pride of place in a frame on the garage wall.......cheers, Paul

Blu 72 96v4
Silver 84 99GL
Blu 84 99GL
Red 84 900 8v inj
Grey 91 900 16v
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deggsie
V4 Fanatic

United Kingdom
298 Posts

Posted - 05 Mar 2018 :  09:52:26 Show Profile Reply with Quote
For anyone new or by way of reminder ... the Bolt Spec spreadsheet is on the Technical page of this website (near the top of your screen)

___________________________
Saab - beyond the conventional !
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