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30/26 From Rwd To 4Wd

SIR-JD

By SIR-JD,
in Engines & Forced Induction

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  • 2 weeks later...
Shoota_77 Veteran

Shoota_77

Posted
Posted

The lower you go in theory the worse the geometry will be compounded further by spacing the k frame down. Presumably there is a point it would get to where it starts to cause a problem (vibrations, grabbing, noise, etc). Shows how capable a cv joint can be for there to be no obvious issues.

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luke gtr Grand Master

luke gtr

Posted
Posted

I was thinking more like issues with bump steer etc.

But good to hear it has no noticeable effects.

could also be because im a shit driver and dont notice?

yeah, ill go with that ;)

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GTRPSI Mentor

GTRPSI

Posted
Posted

Luke, did you use 10mm spacers for the front subframe or did you go more?

Reason i ask is because you say you dropped the subframe 30mm......

If so did you just use longer bolts through the front chassis?

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  • 6 months later...
sultanaz Proficient

sultanaz

Posted
Posted

Didnt want to start a new thread but can we hear more about people running the gearbox bolts out ?
Was it okay , or was it worth getting the holes welded and retapped?
Hate the look of it aye, havent got a full tune just yet but yeah.. doesnt look the best and im a lil worried about the torque through it.

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Shoota_77 Veteran

Shoota_77

Posted
Posted

It's not ideal but not the end of the world. There's minimal actual "twist" between the engine and gearbox. All of the force runs straight though the shafts, not the box. The only force is created from the friction of the input and output bearings so basically nothing.

There's a huge number of cars that just have a cover plate over the lower half of the gearbox so don't have any bolts holding them to the sump.

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KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

My RB30/25 is missing a couple of bolts. I guess if I were to get a Spool 3.4L kit and 1000hp I would drill and tap new bolt holes but I don't see a problem as yet

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sultanaz Proficient

sultanaz

Posted
Posted

alright beauty. Im only gna have about 600hp anyway, but i still look at the design as being poor. and should probably get it redrilled and taped.

Even for getting the car engineered and such .

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