Building the supercharger to the engine (75 3.0V6)

gtv-racer
Platinum
Platinum
Posts: 223
Joined: Tue May 12, 2009 12:02 pm

Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer » Sun Dec 08, 2013 4:58 am

Huh..? Messages gone...

Edit. Ah , moved to the clutch section!
gtv-racer
Platinum
Platinum
Posts: 223
Joined: Tue May 12, 2009 12:02 pm

Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer » Tue Jan 14, 2014 3:53 am

Double..
Last edited by gtv-racer on Tue Jan 14, 2014 1:08 pm, edited 1 time in total.
gtv-racer
Platinum
Platinum
Posts: 223
Joined: Tue May 12, 2009 12:02 pm

Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer » Tue Jan 14, 2014 3:54 am

gearbox internals almost referbished in a nice state.
Got an other gearbox and exchanged parts. Also a new bearing for reverse. It was -0.15mm so i presfit a new bearing surface from a needle bearing. I know it weakens the shaft a bit but i geuss it's just fine. Don't reverse the whole day :lol: And fifht is supported for 90% by the bearings in the flange in the middle of the box. Also popped in a new reverse gear. It was verry worn...

Shimming the pignon still has to be done.

Now that all the drive line is of the car it is a nice time to built some headers. Jacked it up high and oilpan protection is of. I thought something like the JK24v headers should be nice for my apllication. What do you guys think of the spec's from the exhaust for my 75.

Only thing i think i change is the upper header part for easy fabrication like this:

Image

Pipe diametre and lenght should be the same as JK one. Any tips?
gtv-racer
Platinum
Platinum
Posts: 223
Joined: Tue May 12, 2009 12:02 pm

Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer » Sat Feb 01, 2014 10:53 am

Some progress:

Image

Image
gtv-racer
Platinum
Platinum
Posts: 223
Joined: Tue May 12, 2009 12:02 pm

Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer » Sat Feb 08, 2014 8:43 am

Image

Image

Image

Image

Till now 3.75% length difference.... not bad. Some tuning to do maybe. Wonder how good the csc's are?
kevin
Verde
Verde
Posts: 2762
Joined: Sat Jan 22, 2005 9:09 am
Location: Esher, UK

Re: Building the supercharger to the engine (75 3.0V6)

Post by kevin » Sun Feb 09, 2014 2:00 am

Looking good . Just check the flanges between headers and down pipes are planed after welding as this distorts and can lead to a leak as you only have three bolts clamping it . If you could make tiny pipe inserts in this joint between the pipes it also helps stopping gasses blow by . I used to get really nice compressible exhaust gaskets lasered which took up any difference in levels .
gtv-racer
Platinum
Platinum
Posts: 223
Joined: Tue May 12, 2009 12:02 pm

Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer » Sun Feb 09, 2014 5:15 am

If flatness is a problem i mill them down. Copper gaskets i am planning to use. Can mill them myself.
Also i weld the flanges inside so welding them disortes them as less as possible and flow is optimised. The primary tubes are gonna be welded tig with backing gas for smooth internals.
User avatar
Mats
Verde
Verde
Posts: 4059
Joined: Mon Nov 29, 2004 12:26 am
Location: Gothenburg, Sweden
Contact:

Re: Building the supercharger to the engine (75 3.0V6)

Post by Mats » Tue Feb 18, 2014 10:19 am

On my turbo manifold (stainless) I made the flanges so that I could slide the tubing into the flange and weld in the middle of the flange. Zero disortion.
Mats Strandberg
-Scuderia Rosso- Now burned to the ground...
-onemanracing.com-
-Strandberg.photography-

GTV 2000 -77 - Died in the fire.
155 V6 Sport -96 - Sold!
gtv-racer
Platinum
Platinum
Posts: 223
Joined: Tue May 12, 2009 12:02 pm

Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer » Thu May 01, 2014 10:46 pm

Image

Image

What a pain in the .. to built but now i'm happy again :lol:
User avatar
75evo
Verde
Verde
Posts: 898
Joined: Tue Oct 11, 2005 8:56 am

Re: Building the supercharger to the engine (75 3.0V6)

Post by 75evo » Fri May 02, 2014 7:39 am

Wow! Beautiful!!!!

Headers are a lot of work! I saw a 916 GTV 24V with custom headers. The poster said the person who made the headers would prefer to commit suicide than to make another one for the Alfa. :mrgreen:
Jim K
Verde
Verde
Posts: 1729
Joined: Tue Nov 30, 2004 12:10 am
Location: Athens,Greece

Re: Building the supercharger to the engine (75 3.0V6)

Post by Jim K » Fri May 02, 2014 11:18 am

Not Alfa, but do you want to see what a lot of work is? :shock: :shock: :shock: :shock: :shock: :shock:
Don't ask what bike, but its a Greek guy that did this.... I think its just amazing! Its ART! Too bad it looks like some ugly worm or someone's intestines, hahah... :mrgreen: :roll:
Jim K.

Image
User avatar
Mats
Verde
Verde
Posts: 4059
Joined: Mon Nov 29, 2004 12:26 am
Location: Gothenburg, Sweden
Contact:

Re: Building the supercharger to the engine (75 3.0V6)

Post by Mats » Fri May 02, 2014 1:47 pm

Wow. :D
Mats Strandberg
-Scuderia Rosso- Now burned to the ground...
-onemanracing.com-
-Strandberg.photography-

GTV 2000 -77 - Died in the fire.
155 V6 Sport -96 - Sold!
gtv-racer
Platinum
Platinum
Posts: 223
Joined: Tue May 12, 2009 12:02 pm

Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer » Sat May 24, 2014 1:04 pm

Image

Image
kevin
Verde
Verde
Posts: 2762
Joined: Sat Jan 22, 2005 9:09 am
Location: Esher, UK

Re: Building the supercharger to the engine (75 3.0V6)

Post by kevin » Sat May 24, 2014 3:55 pm

Wow :shock: Superb ! Very neat the way you have kept the volume and clearance over the Dedion . I see this car the rear section of exhaust goes on the right side of gearbox . Is that for all 75 ?
User avatar
Maurizio
Verde
Verde
Posts: 679
Joined: Wed Dec 01, 2004 4:49 am
Location: the Netherlands, 153.1km from the N'ring :-)

Re: Building the supercharger to the engine (75 3.0V6)

Post by Maurizio » Sat May 24, 2014 4:36 pm

kevin wrote:I see this car the rear section of exhaust goes on the right side of gearbox . Is that for all 75 ?
yes
Banned.. ? ;-) Daily donky.. ==> BMW 118d Image
E36M3 (3.0) Ringtool :twisted: ==> definitely BANNED!

AR 75 TS Ringtool '90, AR Spider 2000 veloce '79
Post Reply