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

Post by gtv-racer »

http://www.autodeltashop.com/product_in ... cts_id=353

This is what autodelta sells for the 3ltr 24v with a rotrex. Rotrex is more efficient on high rpm. But can the lower cr of the 2.512v make up the 3.0 24v with higher cr and more breathing capacity?
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75evo
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Re: Building the supercharger to the engine (75 3.0V6)

Post by 75evo »

I was thinking port the intake and exhaust ports it to 3.0 port size, 3.0 valves, use low overlap high lift cams.The GTV6 with the 2.5 24V drift car in northern europe (forgot which country) is making tons of power 300-400 bhp. If the 2.5 with high boost can make 300 bhp, that would e great. I think Greg Gordon got 200 bhp for a basic setup with twin scroll SC in a stock GTV6 with low boost.
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Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer »

Had two oil leaks on both valve covers. So removed them. Also made some baffleling in them while I was at it for the crank case breathers so they won't suc up oil which is bad for detonation and a lot of other stuff.

Image

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Also in my search on the web I came across some nice vvt solution:

https://youtu.be/vkznVtJNeuY


https://riders.drivemag.com/news/the-de ... technology

I think I can fabricate something like this myself and Bench test it on a lathe for rpm switch settings. But first check on the dyno if we can gain power with adjusting the cams.
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Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer »

Ported the blower for lower temps. They sky rocket wonce you exceed the 14000rpm limit where the normal m62 unit was designed for. So I copied the inlet side of an mp62 unit which is the performance model and can rev up to 16000rpm.

Made a section view of the rotor and copied the contour:

Before:

Image

After:

Image

Discharge side:
Semi before :lol:

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After:

Image

Hope I unleash al the extra pony's :lol:
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Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer »

Installed an oil heatexchanger parralel to the oil cooler. It took nearly 25 min for the oil to heat up on a warm day.

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Used the plug in the blok to get a coolant feed:

Image

Already checked oil preasure on the cold engine. Now let's see when it is warmed up and at redline.

Have wait 2.5 monts because of dutch oldtimer regulations.... :|
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Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer »

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 increase.


old:

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new:

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