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OK, i have spoken to the Mike at MV automatics, and am seriourly thinking about ordering tomorrow morning an upgrade for my rb20 automatic gearbox, consisting of a 2800rpm high-stall and stage 2 shift kit

i want to know if anyone has gone down this route and can give me a description of how it drives?

Mike said that drivability is alomst normal and the converter still locks on the highway so fuel economy is almost normal too...

apparently their gearbox drives nothing like the traditional V8 high-stall gearboxes...

can anyone give me some insight??

cheers,

Warren

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parts have been ordered :D

should take about 1.5 weeks to get them all made and sent out, then i just have to put them in and i'm laughing!

mike thinks that even with the rb25 turbs on rb20 i should be able to get about 4-5psi at that rpm to help me shoot off the line!

13's here i come!!!

(ran a 14.7 @ 98mph with the current setup)

  • 2 weeks later...

Hi,

i have a R33 4door. I have mikes shift kit, and recently installed a 2800 converter as well.

The shift harshness varies with your right foot, so its not always hard. But boy does it make the tyres work when it does shift....

As for the new converter, its pretty good. You notice it a little more in street driving conditions, but not too much. And the lockup still works a treat.

On the strip, (assuming you have good enough tyres to stall onto without spinning ), i was getting 7-9 psi with a quick stall at light throttle (since only got side mount cooler at that stage) .

Unfortunately, the 60' timers wernt working on the night i went out. but ET dropped from a 13.8 to a 13.2 However MPH dropped 4 mph

Not sure if this was converter, or due to the fact sitting on the line with boost fried the SMIC sooner and it lost top end......

Gary

i have a 2500 stall converter

from Dynamic Race Transmissions

along with my rebuilt box.

shifts are hard as.

its cost $600 for the converter.

Waz will your box be fully manualised after the stage 2 shift kit?

its still a std rb20det box right?

p.s my diff sounds like its copping a hiding if it changes from 1st to 2nd while rolling,you actually need to give it sum so it changes smoother

i don't want to say what i paid (people can call MV automatics for that) but it was just a bit more than what you wrote and that was for the shift kit AND converter

and of course different company means different product.. s they will perform differently..

its not manualised, just sharper changes...

the rest of hte box is standard... still rb20det auto box

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