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Rb25 Motor Using Rb20 Box

DUU MA

By DUU MA,
in Australian Capital Territory

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DUU MA Contributor

DUU MA

Posted
Posted

hi just wanting to know who out there is using a rb20 gearbox behind an rb25

how much power do you have? what kind of clutch do you use and how long has it lasted.

does anyone do track/drift and how did it hold up then?

Im looking at getting around the 220 - 230atkw with the upgrades that im doing and just needed some more info on how the box will hold up.

thanks

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https://www.sau.com.au/forums/topic/264707-rb25-motor-using-rb20-box/
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StinkyPoo Mentor

StinkyPoo

Posted
Posted (edited)

Got max of 236rwkw in front of my RB20DET box. I go drifting and 2nd gear syncro is getting worn. I have to change gears slowly now until i change the syncro's.

I figure, I can break three RB20DET boxes before it costs me 1 RB25DET box.

Edited by StinkyPoo
MANG Proficient

MANG

Posted
Posted

ive had 250-260rwkw from the RB25DET w/RB20DET gearbox for about 1.5-2 years, treated pretty rough, still feels pretty strong.

as stinkypoo says 3 RB20 box's for one 25 box.

the different mounts, speedo drive, tailshafts and possibly installation would probably add up around a grand aswell. so more like 5 RB20 box's in the end.

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