Search found 257 matches

by gtv-racer
Sun Mar 31, 2024 12:03 am
Forum: Gearbox, Clutch and Driveshaft
Topic: Building a bulletproof transaxle (460NM 355Hp)
Replies: 1
Views: 74

Re: Building a bulletproof transaxle (460NM 355Hp)

Here the old research: Some testing the to see how much better the new flange is. So the first test is the old flange and a torque of 320n/m a bit more than the standard toque but the number is very conservative i think. Beqause shock loads will be much higher i guess. The test facility: https://mya...
by gtv-racer
Sat Mar 30, 2024 1:07 am
Forum: Gearbox, Clutch and Driveshaft
Topic: Building a bulletproof transaxle (460NM 355Hp)
Replies: 1
Views: 74

Building a bulletproof transaxle (460NM 355Hp)

Hello all, I get some questions about my transaxle and since I am not planning milling the billet 6082 aluminium intermediate flange I thought I'll help you guys out. Here's how i built my transaxle on the supercharged 75. I did some trackday with it and one or 2 drift days. Never had a failure on t...
by gtv-racer
Sat Dec 16, 2023 10:56 am
Forum: Performance
Topic: V6 12v Individual Throttle Body
Replies: 15
Views: 4844

Re: V6 12v Individual Throttle Body

It has a 24v engine. I personaly think that's a big change :wink:
by gtv-racer
Wed Jul 05, 2023 1:08 am
Forum: Projects & restoration
Topic: Alfetta GTV 1800 Track day project
Replies: 27
Views: 5413

Re: Alfetta GTV 1800 Track day project

Such an nice clean looking car. Love it!
by gtv-racer
Thu Nov 17, 2022 10:18 am
Forum: Projects & restoration
Topic: New GTV6 project, 1981 Rosso
Replies: 40
Views: 109519

Re: New GTV6 project, 1981 Rosso

Verry nice looking gtv6! 8)
by gtv-racer
Fri Apr 08, 2022 10:19 am
Forum: Performance
Topic: Building the supercharger to the engine (75 3.0V6)
Replies: 276
Views: 137260

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

It's not the same material. It is 34ChrNiMo6 steel which we use in our University race cars. How ever spring charecteristics are about the same. It should give about 150 percent increase in spring stiffness.
by gtv-racer
Mon Apr 04, 2022 4:53 am
Forum: Performance
Topic: Building the supercharger to the engine (75 3.0V6)
Replies: 276
Views: 137260

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

With the new spring setup the car feels and drives like a modern car .Body rol is reduced a lot. Also nose diving while is braking a lot better. :lol:

Haven't drove it on the limmet yet but in fast corners it feels good. So happy the slopyness is gone!
by gtv-racer
Sat Jan 22, 2022 11:58 pm
Forum: Performance
Topic: Supercharged 3.0 24V
Replies: 22
Views: 5254

Re: Supercharged 3.0 24V

Why not use something like a tvs of Eaton? Sprintex also has more compact units I thought. These models are also very efficient at max rpm. Then you have torque everywhere. The older M units where only efficient in mid and low down rpm unless ported. If you are worried about transaxle strength at lo...
by gtv-racer
Tue Dec 28, 2021 12:23 pm
Forum: Performance
Topic: Building the supercharger to the engine (75 3.0V6)
Replies: 276
Views: 137260

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

Fully splined and sprayed:

Image

They are already in the car. Let's see how they drive. Have to wait till March.. the car is suspended.
by gtv-racer
Fri Dec 17, 2021 10:48 am
Forum: Performance
Topic: Building the supercharger to the engine (75 3.0V6)
Replies: 276
Views: 137260

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

In the proces of making new 25.4mm torsion bars. Hope it loses the cruise ship like drive. This should be nice for a street application. The material is 12ChroNiMo6. We also use this in our university racecars. Stiffness is about the same. This increase in diametre should give a 150 % stiffer spring...
by gtv-racer
Mon Jul 19, 2021 4:32 am
Forum: Race Cars and Track preparation
Topic: Alfa Romeo GTV 916 3,0 V6 24V CF2 Engine Tuning
Replies: 5
Views: 3146

Re: Alfa Romeo GTV 916 3,0 V6 24V CF2 Engine Tuning

Nice car. I owned one myself. This one looks mint!
love to see the dyno figures.
by gtv-racer
Tue Jun 15, 2021 5:29 am
Forum: Engine
Topic: Crank case ventilation and negative pressure
Replies: 4
Views: 2426

Re: Crank case ventilation and negative pressure

can't you get away with a good oil seperator?
by gtv-racer
Sun Jun 06, 2021 11:32 am
Forum: Performance
Topic: Building the supercharger to the engine (75 3.0V6)
Replies: 276
Views: 137260

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

This is a donut from a bmw 123D wich has 400Nm of torque and also has the box upfront. So torque through the donut won't be an issue. It's from our trackday tool. You can see i removed one washer. The bmw donut has a pitch diamter of 110mm which is the same as our v6 big pich diameter. But the small...
by gtv-racer
Wed Apr 28, 2021 11:07 am
Forum: Performance
Topic: Building the supercharger to the engine (75 3.0V6)
Replies: 276
Views: 137260

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

Thanks again for the pics! My front donut lasted about 10.000km. Not bad I think. About 6 track days and one drift day. I made a cage before but the slots weren't wide enough for my torque figure so it rattled under max power.. I ditched it. Let's see how quick the new donuts fail and if it 8s to qu...
by gtv-racer
Tue Apr 27, 2021 9:33 am
Forum: Performance
Topic: Building the supercharger to the engine (75 3.0V6)
Replies: 276
Views: 137260

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

Haha, what a story. :mrgreen:
Thanks for the pic's but I am also curious for the front solution.