Jump to content
SAU Community

Recommended Posts

Ok I blew my RB20DET 5spd man box at local drags using slicks

Whats the best way to get strengh so this wont happen again

now im contemplating in either using a RB25DET 5spd as they are supposed to be stronger than the RB20DET unit, Also will my RB20 clutch (exedy HD) be ok to use with the RB25 box??

or is there any auto boxes that are strong that will work, like RB20 or RB25???

I just dont want to go back out again and destroy another gearbox on slicks...

Do in this order

1.Bin RB20det box

2.Laugh at how small it is

3.Find RB25det box

4.Admire it's fatness and giggle like a school girl

But seriously it will bolt to the RB20,use the RB20 flywheel/clutch,you need to mod the gearbox mount with some flat bar,use R33 slave,shifter and the yoke or vlt yoke.Speedo,if it's cable I hear a cut down?vlt sender could work

How much power are you making, and what sort of rpm did u decide to dump the clutch at? Are you wanting a straight bolt up gearbox, im guessing you have an rb20 in a vl? what about the mx7? rb30et gearbox. You could always get anything, just depending how much money you want to spend. You could go all out and get a tremec tko 6 spd :rolleyes: haha

MX-7's are weak as shit too.

they are soo old they just shatter. I've seen heaps die here in Vic.

Mine, and a mates.

Get an RB25 box and you'll be fine. Just make sure you get a yoke with it.

whats the point of a yoke when they are pressed and seal uni joints and have to be scrapped???

I got a yoke with my 5psd but when i took it to the driveline place they said they couldnt use it. I think i ended up getting a suitable Mark William "V8 Supercar spec" yoke with replaceable uni joints for SFA

you can use em. I need one for my 25box to fit to my car.

tierh that or its the driveshaft... so i got both. :rolleyes:

been a while since my workshop has done a 25 box... as usually cars aint POS's like mine... hehe

i am in the middle of the same gearbox convert. All boxes seem to be from $1500 to $2000. The yolks as far as i know can be blended with the standard uni. I have a friend who did this convert and thats what he did and it seemed to work. Not 100% sure but thats what he said.

Are you guys still talking about a second hand box???

Why bother putting in a box that has had the k's wound up on it already, and god knows how that was treated. Why dont you just get a box and rebuild it properly with all new bearing cogs, the lot. Of course strengthened parts. Might cost more, but hey, for that peace of mind ...

and mx7's arent that bad, i had a vlt gave them thing so much shit, was on the way out when i got it, and was still going 18 mths later. with plenty of flat changes. haha

From what I have heard they are the same strength but the RB25 Box has much better designed syncros.

Yeah, I would agree with that completely, thats what should have been said in the first place by the other users.

;)

Tizzle,

32702 - 02G17 pinnion assembly

If they ask what model car say Navara. shouldnt cost more than $26

I got mine from Metro Nissan at Windsor... Those guys are complete wankers in my opinion.. Good luck ;)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • A little follow up here on the ceramic coating.  We've had storms galore here and I've done a few ks, enough to gross them up  Consensus is that they didn't get as dirty as usual, the coating definitely repelled a little of the dirt and I think they kinda snowball. They get a little dirty and then they get dirty faster which makes sense. Cleaning them regularly would allow them to protect better.  Cleaning was a breeze. I tried first to just hose them off which, unsurprisingly, did nothing. But, making the wheels wet and then just wiping them over with a used but clean microfibre cloth was all that was required. I didn't need any cleaner at all, just water and a cloth. The wheels look amazing again.
    • Gave her a nice wash today and took extra time to clean off the tree sap and tar and crap. We have a usable garage now so she'll stay cleaner longer. Took a few snaps in some nice light afterwards.   
    • OK, solid mount Z1 diff brace is in, pretty straightforward, it picks up 3 diff hat bolts and ties them to 2 support bolts on the subframe. Pretty sure someone else on here said they had reduced axle tramp with this but mine was already pretty good for smooth wheelspin, and still is....will see you this goes over time and whether I end up with a broken rear diff hat
    • Ah yes, but the part in my hand was actually painted and fitted by me! I knew any front lip was likely to be sacrificial but I've had to fix it twice already... by the time I buy a fibreglass fixing kit, sort out sandpaper blocks, buy some fibreglass filler, body bog, spend the time and effort for a 'Greg' result... a new one being $290 seems like it's the better way to go and spray that with bedliner/raptor coat and we're all pretty again.. Would have preferred it last more than a month though. Them's the breaks I suppose.
    • I find it funny that the USA is finding out all this really really weird stuff, and people from the USA are coming here treating it like gospel, yet, all the info on solving those issues is here on these forums for the last 15 odd years... Also, I know how much heat it takes to ignite the hood lining of an R33 skyline. I worked it out myself... It also took a LOT of time, and heat for it to do it... Big single, and I needed to drive the car, so retarded the timing off to "protect it". Yeah, that was a bad move for cruising on a freeway with only 15 degrees of timing on it. That was a lesson I learned around 2009. So that's over 15 odd years ago. Aligning water and oil, that's identical for any turbo engine, it's not Japanese specific. If a shop doesn't know how to make sure the core is rotated the right way, then they shouldn't be touching any turbo engine. That's not a matter of "We haven't had Skylines for that long here"...
×
×
  • Create New...