Project 2 : front mount SA GTV 3.0 - Sei diff

Alfa Romeo ONLY please!
Post Reply
kevin
Verde
Verde
Posts: 2762
Joined: Sat Jan 22, 2005 9:09 am
Location: Esher, UK

Project 2 : front mount SA GTV 3.0 - Sei diff

Post by kevin » Tue Nov 06, 2012 1:28 pm

Hi , as mentioned in other post I am building another race car with a bm gearbox upfront and the alfa Sei diff . Basically there are four other GTV like this in our group but are all producing excess off 450 hp hence the gearbox upfront . This obviously nothing new with Dawie from Glenwood perfecting this competively over 20 years ago with the car in pic below . I still question if their ever has been a faster built Alfa than this mighty twin turbo in all these years .
Last data captured on this car was way over 600hp .
Anyway i find that my current race car with the 3.7 in it is so perfectly balanced and not easy to things get out of shape on the track so this will be an Interesting comparison as I will initially apply all same shock specs , ride height etc .
I will post some pics off roll cage to start , then body work , down to clutch assembly and adaptors .
Pic courtesy of mark walshaw
Attachments
image.jpg
image.jpg (64.81 KiB) Viewed 6037 times
Last edited by kevin on Fri Mar 22, 2013 4:34 pm, edited 3 times in total.
kevin
Verde
Verde
Posts: 2762
Joined: Sat Jan 22, 2005 9:09 am
Location: Esher, UK

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by kevin » Tue Nov 06, 2012 1:38 pm

Firstly some pics of the cars running front mount boxes. note in pic 2 of the bmw tunnel leaning against the wall.
Attachments
IMG-20121022-02689.jpg
IMG-20121022-02689.jpg (75.09 KiB) Viewed 6727 times
IMG-20121024-02747.jpg
IMG-20121024-02747.jpg (100.94 KiB) Viewed 6727 times
kevin
Verde
Verde
Posts: 2762
Joined: Sat Jan 22, 2005 9:09 am
Location: Esher, UK

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by kevin » Tue Nov 06, 2012 1:50 pm

I started by welding a 6 point roll cage . i have tried to pick up all the necessary points without over complicating the design and at the same time make it as safe as possible. the cage runs right through to shock tower . i will also make a triangular brace in the engine bay but its difficult to get clearance above engine and below windscreen wiper . Now the car will be painted by an Alfa specialist Fernando at Lake Avenue Autobody in Benoni.
Attachments
IMG-20120925-02449.jpg
IMG-20120925-02449.jpg (122.39 KiB) Viewed 6726 times
IMG-20120925-02450.jpg
IMG-20120925-02450.jpg (109.74 KiB) Viewed 6726 times
IMG-20120925-02448.jpg
IMG-20120925-02448.jpg (145.47 KiB) Viewed 6726 times
Last edited by kevin on Wed Oct 22, 2014 12:45 pm, edited 1 time in total.
kevin
Verde
Verde
Posts: 2762
Joined: Sat Jan 22, 2005 9:09 am
Location: Esher, UK

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by kevin » Tue Nov 06, 2012 1:57 pm

To work on car it is easier to put it on its side on double tyres and tie the car to a column . It took eight of us to turn it. Initially it would be to cut out rust and strenghten anti roll bar points but Fernando wanted me to draw and mark it up perfectly before he looked at best way of stitching new tunnel in .
Attachments
IMG-20121024-02754.jpg
IMG-20121024-02754.jpg (129.52 KiB) Viewed 6724 times
IMG-20121005-02570.jpg
IMG-20121005-02570.jpg (95.62 KiB) Viewed 6724 times
Last edited by kevin on Wed Oct 22, 2014 12:48 pm, edited 1 time in total.
AlanV6
Gold
Gold
Posts: 66
Joined: Fri Oct 21, 2011 11:05 pm
Location: Slovenia

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by AlanV6 » Wed Nov 07, 2012 9:01 am

Wow, nice project this!

How are the cars behaving with the gearbox upfront (weight distribution and so on)?
kevin
Verde
Verde
Posts: 2762
Joined: Sat Jan 22, 2005 9:09 am
Location: Esher, UK

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by kevin » Wed Nov 07, 2012 11:14 am

Alan,it will interesting to see how unbalanced the car is . some more pics . notice the Sei crossmember is 20mm thicker. i will still use the original one from GTV6 but i will drill holes and put suports in where the diff bolts to the crossmember.
I brought support work into engine bay incase I cut later on for space for turbos - but thats later dream
Attachments
IMG-20120819-01985.jpg
IMG-20120819-01985.jpg (145.97 KiB) Viewed 6696 times
IMG-20121024-02755.jpg
IMG-20121024-02755.jpg (107.49 KiB) Viewed 6696 times
IMG-20120920-02387.jpg
IMG-20120920-02387.jpg (132.05 KiB) Viewed 6696 times
kevin
Verde
Verde
Posts: 2762
Joined: Sat Jan 22, 2005 9:09 am
Location: Esher, UK

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by kevin » Wed Nov 07, 2012 11:28 am

Some pics of marking the BMW tunnel and welding the tunnel in. Car is on side so pic might look upside down.
Attachments
IMG-20121030-02810.jpg
IMG-20121030-02810.jpg (88.47 KiB) Viewed 6696 times
IMG-20121030-02805.jpg
IMG-20121030-02805.jpg (112.45 KiB) Viewed 6696 times
IMG-20121030-02808.jpg
IMG-20121030-02808.jpg (96.7 KiB) Viewed 6696 times
kevin
Verde
Verde
Posts: 2762
Joined: Sat Jan 22, 2005 9:09 am
Location: Esher, UK

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by kevin » Wed Nov 07, 2012 11:47 am

Some new brackets to hold gearbox . made it so it can be removed easily. also cleaned up alot ofwelding.
Rear diff bracket to be removed on dotted line . This all looks like major stuff but its not really.
Attachments
IMG-20121106-02888.jpg
IMG-20121106-02888.jpg (117.79 KiB) Viewed 6694 times
IMG-20121106-02887.jpg
IMG-20121106-02887.jpg (107.57 KiB) Viewed 6694 times
IMG-20121106-02885.jpg
IMG-20121106-02885.jpg (129.26 KiB) Viewed 6694 times
kevin
Verde
Verde
Posts: 2762
Joined: Sat Jan 22, 2005 9:09 am
Location: Esher, UK

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by kevin » Wed Nov 07, 2012 11:54 am

Finally got a perfect adaptor bracket.
Attachments
IMG-20120917-02342.jpg
IMG-20120917-02342.jpg (89.8 KiB) Viewed 6694 times
Duk
Verde
Verde
Posts: 527
Joined: Sun Aug 19, 2007 9:15 pm
Location: South Australia

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by Duk » Wed Nov 07, 2012 10:11 pm

That chassis/roll cage is looking VERY SOLID! :D
Another awesome thread of yours I'll be keeping an eye on!
User avatar
MD
Verde
Verde
Posts: 2318
Joined: Mon Nov 22, 2004 2:37 am
Location: Brisbane, Australia

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by MD » Thu Nov 08, 2012 12:38 am

Kevin.

You are going to be in deep doodoo when your mum finds out what you been up to.. :wall:
Transaxle Alfas Haul More Arse
Joemart
Platinum
Platinum
Posts: 288
Joined: Sun Dec 25, 2011 12:25 am
Location: South Africa - JHB

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by Joemart » Thu Nov 08, 2012 9:03 am

wow...Kevin... some real progress here!!!
kevin
Verde
Verde
Posts: 2762
Joined: Sat Jan 22, 2005 9:09 am
Location: Esher, UK

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by kevin » Thu Nov 08, 2012 12:31 pm

Thanks duk , it's still under wraps . No family member knows except the old old man and it's actually a project for both of us to keep him busy in his later years . My aim is to finish car by January . Probably not possible but will try . Got some pics of rear diff mount . It's really difficult as some guys cut the entire section of the Sei out and weld it in , but I don't have one . Other is to mount it solid but I think it will crack over time . So I think I will hang it from inside boot /trunk . Was drawing many pics of it last week to find solution. Main problem is to keep it high enough without disc touching body and still keep diff high enough off floor .
kevin
Verde
Verde
Posts: 2762
Joined: Sat Jan 22, 2005 9:09 am
Location: Esher, UK

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by kevin » Thu Nov 08, 2012 12:53 pm

some pics of rear diff mount. Note the outline of diff painted on new panel
Attachments
IMG-20121108-02917.jpg
IMG-20121108-02917.jpg (119.27 KiB) Viewed 6641 times
IMG-20121108-02916.jpg
IMG-20121108-02916.jpg (107.76 KiB) Viewed 6641 times
Last edited by kevin on Wed Oct 22, 2014 12:50 pm, edited 1 time in total.
User avatar
Giuliettaevo2
Verde
Verde
Posts: 769
Joined: Sun May 08, 2005 11:56 pm
Location: Netherlands

Re: Project 2 : front mount SA GTV 3.0 - Sei diff

Post by Giuliettaevo2 » Thu Nov 08, 2012 12:58 pm

Here is my Sei diff mounting..
Image
Image

I cut off the original mounts and welded a new piece in. It has some threaded nuts welded in and the loose part gets bolted to it. The diff then bolts to that. I just need to make another bracket on the back of the diff to stop the rubber from being pulled down on only one side.
Drive it like you stole it...
Post Reply