Search found 253 matches

by gtv-racer
Thu Nov 17, 2022 10:18 am
Forum: Projects & restoration
Topic: New GTV6 project, 1981 Rosso
Replies: 39
Views: 14539

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: 112497

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: 112497

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: 2732

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: 112497

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: 112497

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: 2016

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: 1520

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: 112497

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: 112497

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: 112497

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.
by gtv-racer
Sun Apr 25, 2021 10:58 am
Forum: Performance
Topic: Building the supercharger to the engine (75 3.0V6)
Replies: 276
Views: 112497

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

Zanami I have the splined front axle. The rear donut is on the photo. MD. That sounds really good. Do you now people who have tried it on the transaxle with high horsepower cars. And how does certering work. It does not have any alignment hole and also you need something to cover up the pilot bearin...
by gtv-racer
Sat Apr 24, 2021 8:45 am
Forum: Performance
Topic: Building the supercharger to the engine (75 3.0V6)
Replies: 276
Views: 112497

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

dyno results are in and i must say i'm verry satisfied. An 45HP increase and 45NM that counts a total of 355HP and 465 NM. https://myalbum.com/photo/fyoNC9eWxL5C/360.jpg https://myalbum.com/photo/yrM47eSY6mZv/360.jpg also nice to see that the power curve's flat spot at the end is a little bit less f...
by gtv-racer
Fri Mar 05, 2021 1:54 am
Forum: Performance
Topic: Building the supercharger to the engine (75 3.0V6)
Replies: 276
Views: 112497

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

flowing the supercharger results. 0.15bar boost increase. delta temp stays about the same. i need some torque control for first gear! i have never seen preassure that high, 0,9 bar :D The car felt really quick! 8) That's a 20% boost increase from 0.75 to 0.9bar. Lets see how this translate's to hp i...
by gtv-racer
Mon Dec 21, 2020 12:16 am
Forum: Race Cars and Track preparation
Topic: SA GTV 6 race car - 3.4 L 24v, 350whp at 5800ft
Replies: 8
Views: 2495

Re: SA GTV 6 race car - 3.4 L 24v, 350whp at 5800ft

What a cool project. Please sent more pics!
Like the looks of the nice and tidy bottem!
Hope i never have to convert to a front mount but who know's.