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Home > Help Needed / General Tech Chat > Gearbox casings and ARP main studs..

jamie@thefatgarage

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Sheffield

6th Feb, 2011 at 01:24:36pm

When I come to fit together my block and gearbox I found that the ARP main studs/nuts on both outer bearing caps foul the gearbox casing to the tune of about 4-5mm.

I presume some of you have encountered this before... is it just a case of grinding space for them or has someone got any helpful advice on the best ways to deal with this?

Do different gearbox cases have different designs in the affected areas? (mine is an early one...)

Cheers..



Joe C

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Carlos Fandango

Burnham-on-Crouch, Essex

6th Feb, 2011 at 01:26:11pm

yep, grind/ file the gearbox case to suit,

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



paul wiginton
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9 times Avon Park Class C winner

Milton Keynes

6th Feb, 2011 at 01:42:23pm

A bit of tig welding is also required as you'll grind through

I seriously doubt it!

jamie@thefatgarage

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Sheffield

6th Feb, 2011 at 02:20:31pm

Thanks chaps. I'll fire up the air drill and tig welder.

stevieturbo

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Northern Ireland

6th Feb, 2011 at 05:36:03pm

I just put my ARP main studs in the toolbox.....they're still sitting there 19 years later lol.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will


madmk1

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Double hard bastard

brookwood woking

6th Feb, 2011 at 06:38:36pm

Will everyone have to do this then?

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

On 1st Nov, 2007 Ben H said:
There is no such thing as 'insignificant weight saving', it all adds up.


Brett

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Doncaster, South Yorkshire

7th Feb, 2011 at 12:55:54am




On 6th Feb, 2011 madmk1 said:
Will everyone have to do this then?

for the mains yes, not for the rods if your thinking that like i was*happy*

Yes i moved to the darkside *happy*

Instagram @jdm_brett


5portsrock

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Advanced Member

nr Portsmouth ,Hampshire

7th Feb, 2011 at 06:24:15pm

Some good info here .

http://www.aptfast.com/

follow the "How To " link then click on main studs .

jamie@thefatgarage

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Sheffield

7th Feb, 2011 at 08:06:12pm

That is quite revealing. The nuts on the studs on that website are 12points, mine are 6 points and seem to be a bit longer. With the washers too makes them a lot longer.

I'm thinking of keeping the washers on the centre main to prevent the nuts eating into the cap over time and doing without washers on the front and rear ones, allowing me to shorten the studs in the lathe. As it stands I'll be removing a lot of material to get them to fit, way more than on the site link above. I might also visit the local fasteners place and see if they have any good tensile nuts that are shorter.

I'm guessing that they won't as I'm sure there must be some relationship between stud material, diameter, thread type and nut length.

5portsrock

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Member #: 2023
Advanced Member

nr Portsmouth ,Hampshire

7th Feb, 2011 at 10:09:48pm




On 7th Feb, 2011 jamie@thefatgarage said:
That is quite revealing. The nuts on the studs on that website are 12points, mine are 6 points and seem to be a bit longer. With the washers too makes them a lot longer.

I'm thinking of keeping the washers on the centre main to prevent the nuts eating into the cap over time and doing without washers on the front and rear ones, allowing me to shorten the studs in the lathe. As it stands I'll be removing a lot of material to get them to fit, way more than on the site link above. I might also visit the local fasteners place and see if they have any good tensile nuts that are shorter.

Im pretty sure you can buy the multi piontnuts seperatley from an ARP dealer ( swiftune / Arrow components )

I'm guessing that they won't as I'm sure there must be some relationship between stud material, diameter, thread type and nut length.

5portsrock

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Advanced Member

nr Portsmouth ,Hampshire

7th Feb, 2011 at 10:12:18pm

oops , made a mess of that , ment to say ,you can get the multi piont nuts seperatley from an ARP dealer ( swiftune / Arrow components ) etc


stevieturbo

3596 Posts
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Northern Ireland

7th Feb, 2011 at 10:34:11pm



On 7th Feb, 2011 jamie@thefatgarage said:
That is quite revealing. The nuts on the studs on that website are 12points, mine are 6 points and seem to be a bit longer. With the washers too makes them a lot longer.

I'm thinking of keeping the washers on the centre main to prevent the nuts eating into the cap over time and doing without washers on the front and rear ones, allowing me to shorten the studs in the lathe. As it stands I'll be removing a lot of material to get them to fit, way more than on the site link above. I might also visit the local fasteners place and see if they have any good tensile nuts that are shorter.

I'm guessing that they won't as I'm sure there must be some relationship between stud material, diameter, thread type and nut length.


Mine had the 6 points, they were massive. They're in the toolbox along with the studs lol.

No way was I grinding the gearbox casing to make them fit. Std bolts do actually work just fine.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

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