whats better..

[fallen180sx]

just want opinions on people whove done it..

whats better/easier... using the rb's crossmember or just getting the motor mount kit

[Joe]

i think "better" is a relative term.

i used the r33 xmember. it saved me 600$ on mounts (no cheaper ones available back when i did mine)

only downside is cutting the hood skeleton. that made me nervous while holding a dremel...

[fallen180sx]

lol. i was just wanting opinions because ive never done a crossmember swap.. it looks sort of complicating and the mount kit is 1,100$ and thats crazy. thanks kamin.

[Joe]

the MOUNT kit is 600. the driveshaft and mount kit is 1100.

and the crossmember swap will take about an hour-2. its not hard at all.

[OKRB20DET]

i think mckinney should sell rb20 and rb25 mount kits for the same price..400 bux, and obviously more if u get the drive shaft with the 25, makes no sense to me to have 2 different motor mount prices for a motor series that uses the same motor mounts, maybe the brackets are different but still

[NISMO_RB25]

The mount kit makes the swap easier. IMOYou end up needing a custom driveshaft anyway, so getting the whole package from Mckinney works out pretty well.

[Phat_Optimo]

Thats a pretty damn expensive drivesahft Mckinney sells...Is there something special about what its made out of *aluminum* I had mine built locally not long ago. They ordered new flanges and aftermarket u-joints. It cost about half of what they are charging.

[Joe]

Thats a pretty damn expensive drivesahft Mckinney sells...Is there something special about what its made out of *aluminum* I had mine built locally not long ago. They ordered new flanges and aftermarket u-joints. It cost about half of what they are charging.

exactally. 2-250$ for a custom driveshaft locally.

500 for the mckinney one.

[Eikon]

I used a R32 xmember to mount my RB20.

My personal opinion is that it's better to spend a couple hundred bucks on a custom turbo elbow/downpipe in order to keep from rubbing on the steering column than it is to spend money on the mounts.

Mounts would have set my engine back a hair which would have been nice... but my shifter being an inch or two forward doesn't bother me at all.

I never had to cut anything from my hood either. Plus, I will be going with a custom intake manifold and IC piping, and that will totally change the height requirements.

So.. my opinion... If you can get a full clip for a reasonable price, go ahead and use the xmember included in that clip. If you just get an engine set... order the mounts.

[SillyRB]

I used my stock crossmember, i got some inserts welded on it, and then used my OEM motor mounts, then later went to a solid motor mount set up when i got the HKS exhaust manifold.

[fallen180sx]

what places make driveshafts? thats a new one on me.. im wondering if i would have to take the rb transmission and ka diff up to them also.

[NISMO_RB25]

you would take the RB driveshaft and and KA driveshaft. You make a measurement of the length you need (subtract an inch for movement) and then tell the drive shaft shop to make you a one piece with this length.

My issue is that I am lazy and didn't want to go through the trouble of finding a reliable driveshaft place, measuring and hoping that they didn't screw it up. Mckinney's is made of all new parts and best all I knew that it would fit, since I was using there mounts.

i am amazed Kamin has let this thread get this far, since this has been discussed a billion times. You getting soft on us, Kamin?

[fallen180sx]

just looking for opinions.. not search for this and that. if everyone searched eventually the mods wouldnt have anything to do and nico would just become a ghost forum and it wouldnt be nico now would it. just keeping the balance set

[Slo_240sx]

you would take the RB driveshaft and and KA driveshaft. You make a measurement of the length you need (subtract an inch for movement) and then tell the drive shaft shop to make you a one piece with this length.

People say subtract you don't need to. Thats only on a conventional leaf spring setup. A IRS rear end is fixed to the body so no movement at all, just rotating movement. I caught onto that a couple years back with people saying take an inch off never said anything until now. Taking off an inch will only pull the driveshaft out an inch making less of a contact from the driveshaft yoke to the output shaft. Less yoke on an input shaft = stripped teeth. Stripped teeth on a driveshaft and outputshaft - EXPENSIVE.-Alex

[fallen180sx]

thanks

[Redline240]

I take it the driveshaft needed to run the RB in the 240 is shorter than the stock one? I got a one peice now and if i ever go rb, can't make up my mind...i can just get it shortened as apposed to getting a new one...

[NISMO_RB25]

You are exactly right, my bad. I was actually thinking about a differnt swap I was planning that would require that. (leaf spring setup)

[Phat_Optimo]

The guy who built my driveshaft told me how to measure for the driveshaft. He said mount the flanges. One the trans and one the diff. He said to measure from the center line of hole on the flange on the trans to the centerline hole on the diff. Came up with 37 7/8". The rb26 output flange on the trans is a bit different than the rb25/KA. Each end has a 4 bolt flange.

[Bluefire]

Every shop will have their own way of having things measured. Your best bet is to call up your local driveshaft shop and tell them you want a one piece made up. They'll probably ask what type of suspension setup you have and might even tell you that its better to keep a two piece setup. But just tell them you want a one piece and ask them how they want it measured. Simple as that.

-Bluefire

[Slo_240sx]

You have a one peice now? If you do go RB you are going to need a different yoke since the rb20, 25, 26 are different. If you go rb20 though the output shafts are the same as the KA. But since you will have to get it shortened anyway you can always get the right yoke and have that welded/changed over on.

The "one inch for suspension movement" has bothered me for quite some time so I thought I had to say it lol.

-Alex