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| Home > Help Needed / General Tech Chat > gearbox bolt upgrade | |||||||
 213 Posts Member #: 249 Senior Member |
10th May, 2004 at 08:41:00pm
vizard mentions in one of his books that a worthwhile mod is to retap and increase the size of the gearbox to engine bolts.....has anyone done this to their turbo motor and is it really needed?? |
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5795 Posts Member #: 80 AFRacing LTD Newbury, Berks |
10th May, 2004 at 08:53:18pm
Quite a few people do it...
AlexF |
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Site Admin  8506 Posts Member #: 16 Sold the turbo and seeing what the C20XE can do! Near Lincoln |
10th May, 2004 at 09:47:46pm
Im going to do it, not a big job at all really and makes things simple. Any little help is a bonus! |
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 3341 Posts Member #: 218 Post Whore Bingley, West Yorkshire |
10th May, 2004 at 11:48:12pm
Isnt it just the corner ones you do? Previous Engine: 1040cc Morespeed engine, 1275 turbo head T2 Turbo Mirage Manifolds Megajolt
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 2909 Posts Member #: 83 Post Whore Glasgow, Scotland |
11th May, 2004 at 02:23:53am
one of my blocks has this mod, whoever done it used alen keys insted of normal bolts as fixings, makes life alot easier as even with the tiny standard bolts its a c*nt to get a spanner in tehre properly.. turbo 16v k-series 11.9@118.9 :)
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Site Admin 8506 Posts Member #: 16 Sold the turbo and seeing what the C20XE can do! Near Lincoln |
11th May, 2004 at 07:51:23am
Nope all of them feebs as far as i know. Woudnt see the point otherwise. |
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 4635 Posts Member #: 20 My sister is so fit I won't show anyone her picture Lake District |
11th May, 2004 at 08:37:52am
My latest block is tapped for the larger bolts.
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244 Posts Member #: 34 Senior Member |
11th May, 2004 at 08:42:47am
This mod is done mostly by racers who have problems with the gear box gasket leaking.
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Site Admin 8506 Posts Member #: 16 Sold the turbo and seeing what the C20XE can do! Near Lincoln |
11th May, 2004 at 08:52:56am
"Prevention is easier than the cure"
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Forum Mod 10980 Posts Member #: 17 ***16*** SouthPark, Colorado |
11th May, 2004 at 09:31:02am
How about this for an easy solution:
On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY |
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 6274 Posts Member #: 509 Post Whore Isle of Man |
19th Feb, 2009 at 06:59:13pm
the gearbox i bought has had the holes drilled out to take 5/16 anyone know a decent supplier of 5/16 unf cap heads?
"Turbo's make torque, and torque makes fun"
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 12307 Posts Member #: 565 Carlos Fandango Burnham-on-Crouch, Essex |
19th Feb, 2009 at 07:32:37pm
how about M8, much easier to find. 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/ |
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 367 Posts Member #: 1643 Senior Member West London |
19th Feb, 2009 at 08:10:56pm
Nice idea on the alley key bolts! Lightweight racer coming soon. |
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 1451 Posts Member #: 328 Post Whore Seaford Rise, South Australia |
19th Feb, 2009 at 08:27:46pm
On 19th Feb, 2009 mini13 said:
how about M8, much easier to find. Fentonator - please ban this user for speaking metric on this site lol! On 5th Sep, 2011 Vegard said:
I stand corrected. You should know  |
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12307 Posts Member #: 565 Carlos Fandango Burnham-on-Crouch, Essex |
19th Feb, 2009 at 08:57:42pm
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/ |
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
19th Feb, 2009 at 09:53:15pm
On 19th Feb, 2009 Scruffy said:
On 19th Feb, 2009 mini13 said:
how about M8, much easier to find. Fentonator - please ban this user for speaking metric on this site lol! Well thats you stuffed if you work on SPi or MPi Minis then 
On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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 7765 Posts Member #: 74 I pick holes in everything.. Chief ancient post excavator |
19th Feb, 2009 at 10:27:10pm
Allen heads in this application is a fucking nightmare... Get some 5/16 UNF bolts with 3/8" head. The BEST solution, end of discussion. On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem. |
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11046 Posts Member #: 965 Post Whore Preston On The Brook |
19th Feb, 2009 at 11:35:57pm
I beg to differ :)
Edited by Sprocket on 19th Feb, 2009. On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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7765 Posts Member #: 74 I pick holes in everything.. Chief ancient post excavator |
20th Feb, 2009 at 07:38:57am
On 19th Feb, 2009 Sprocket said:
I beg to differ :) I have used both 5/16 hex head bolts and cap heads, and the cap heads are far far far far far far far far far easier to fit as long as you have an allen key you cut down a little for the ones over the diff. all others you can use a socket adapter and a torque wrench. Make sure you use washers under the head of the bolts though You try and get a socket with a torque wrench onto the 5/16 hex heads That's why I tell you to use the ones with a 3/8" head. Then you can just use this: 
Until you show me an allen key that can do that, you're wrong. Torque wrench......how anal can you get 
On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem. |
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11046 Posts Member #: 965 Post Whore Preston On The Brook |
20th Feb, 2009 at 10:43:37am
On 20th Feb, 2009 Vegard said:
Torque wrench......how anal can you get Have you got a calibrated elbow? 
Are you telling me that you do not use a torque wrench
Torqued bolts - text book page one
Edited by Sprocket on 20th Feb, 2009. On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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 1849 Posts Member #: 672 The oversills police Oslo, Norway |
20th Feb, 2009 at 11:12:54am
I will also agree with Vegard that using a torque wrench on those isn't necessary. I do however think that allen bolts are good as long as you have a cut down key. |
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7765 Posts Member #: 74 I pick holes in everything.. Chief ancient post excavator |
20th Feb, 2009 at 11:19:02am
It's still fucking time consuming compared to a ratchet spanner. It may look cool, but I'm not too concerned about that.
On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem. |
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Site Admin  15302 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
20th Feb, 2009 at 11:23:24am
On 20th Feb, 2009 Vegard said:
That's why I tell you to use the ones with a 3/8" head. Then you can just use this:
You use an 8mm spanner on a 3/8" head bolt? Rough bastard!
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
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 8297 Posts Member #: 408 Turbo Love Palace Fool Aylesbury |
20th Feb, 2009 at 11:31:38am
LMAO https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel
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 261 Posts Member #: 713 Senior Member Western Australia |
20th Feb, 2009 at 11:46:17am
Vegard has been sprung!
On 24th Dec, 2008 Nic said:
eyh? im drubj but very confused##]#IU |
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