20V vs 4AGZE + Turbo

[Ben Wilson]

I have justr had an idea it may be due to my lack of sleep as of late, what would happen if i was to supercharge a 20V with 4agze bits??? would that be easier than turboin a 20V?

It wouldn't be that hard, due to the inclined ports the supercharger will sit nicely underneath them unlike the 16v.

[Pure-SX]

anyone else got any opinions wat kinda power u rekon a supercharged 20V would make with correct tune etc

[Starfire]

You could do either a supercharger or a turbo.

Because the 20v inlet ports are up higher than the 16v and they are angled upwards you can also retain the quad throttles with the supercharger under them. You will still need a plenum and custom pipework.

[Pure-SX]

Supercharging it would be cheaper?

[Ben Wilson]

Possibly, there really won't be too much difference in the overall price. A turbo car will be quieter and make more power though.

[GBC_069]

if anyone is PM 'ing ppl details on this i would like one too, as my mate has a BT 20v, and he too wants more guts by going low boosted turbo.
and from that picture given it doesnt look too much work, although cramped in a ae92 engine bay.
microtech - 1K - tuning $600
turbo kit - $ 400
intercooler - $300
throttle body fuel rail - $ 350
piping - $250

so 2.5k for a turbo setup on a 20v , putting out say 110kw at the wheels, thats what a std 16v 4agze does wit moderate mods.

[Pure-SX]

Hrrrm, to turbo or supercharge that is the question..... lol
both will need new ecu
intercooler/piping
fuel work
and a turbo/supercharger
has anyone s/charged a 20V before?

[Ben Wilson]

I should be starting on my custom plenum shortly. If it works out and it isn't too much of a PITA to build, I might be persuaded to build up a couple. It won't be cheap though, I'm looking at over $300 in materials.

[gearb0x]

For starters dont use exhaust pipe

Just curious as for your reasoning behind this? obviusly aluminium is lighter, but 2" exhaust pipe isnt THAT heavy, and much easier to weld for the DIY types...

[takai]

There is my plenum, a fairly simple one to make, but a very damn tight fit, look through the gallery and you can see some more shots of it.

[Ben Wilson]

Just looking at that, why the removable lid?

[The Last Streetfighter]

Fast Fours Article (don't laugh!) http://www.twincam.org/forums/index.php?showtopic=20995

Article Discussion and references http://www.twincam.org/forums/index.php?showtopic=20942

Build Thread http://www.twincam.org/forums/index....12579&hl=turbo
Have a good read of it. I think there are some great photos and build of a custom Plenum in there.

[Raceflo]

We have done a few 20V turbo conversions and the results are worth the effort, I am fairly sure that we got 160kw at the wheels from Simons @ only 12psi, and it was reliable and good mid range power, having said that we got similar results out of Leightons car with a very SH turbo on a 4agze, will be interesting to see what he gets out of it when the new turbo is fitted to it next week.

[WDE_BDY]

If you are going to the trouble of turboing it, why not throw a set of 4AGZE pistons in so you can run some decent boost. Blacktop would need the rods as well of course.

Callum

[hybridaddy]

Just curious as for your reasoning behind this? obviusly aluminium is lighter, but 2" exhaust pipe isnt THAT heavy, and much easier to weld for the DIY types...

aluminium is a much better conductor of heat and will help with cooling the intake charge as compared to steel.
aluminium is much lighter than steel and it wont rust internally.

check out this site for all your aluminium material needs
http://www.jntperformance.com.au/