Jump to content
HybridZ

240sx IRS Questions


Recommended Posts

Hey guys, i just picked up a S13 rear subframe 1.5 clutch type short nose r200 with all the cables, brakes, calipers etc. My stock lower CA's are almost shot, i could fix them with some welding, and my brake drums would need turning, but i would want discs because of the way i drive i dont want to have to bleed brakes after every weekend run. I feel im fully capable of making this IRS work on my car and i know its been done before. Ive just been reading up on it, and some peoples opinions are almost biased towards keeping the original suspension for performance. Basically, i picked this subframe with the clutch differential for 450 shipped. I kind of figured, that if i was going to spend the money to get old technology up to snuff, it was going to be as much as this, and i could sell my r200 viscous long nose and make some of the money back. I know it probobly is but i just want some re-assurance after reading some people's knowledge/opinions especially some of the people that seemed to have a lot of experience. Im going to replace this entire IRS's bushings with poly ones and probobly make some brace bars similar to the ones found on the S14 and the R33. Basically i would like to start ANOTHER (lol) thread on this discussion to pertain to people in my position, meaning other people with the necessity to spend money to get their stock rear assemblies back to normal. In turn helping them by reading this to decide whether to spend money on what they have, or spend a little more and get a lot more, but with more to think about and more planning.

Oh, and this is going to be mainly a street car, but occasionaly a track car. And i like to push my cars to their limit, aka flying off the road if any adjustments on a turn were to be made while turning.

Link to comment
Share on other sites

First of all, I'd try to get in good with the http://www.240SX.org guys and see what their experience has been with the strength (or weekness) of the SX rear end, and focus on the holeshot issues to see if you'd be any better off after all this work. I look at my SX rear end and wonder about all those links and bushings (6 per side) and what is taking place with all those hideous angles.

 

Secondly, I was not aware that the SX had a clutch type LSD. My understanding was that the very few that had any LSD were all viscious (unless someone has gone in and replaced the OEM unit).

Link to comment
Share on other sites

make sure your subframe is not from a hicas model 240sx (that 4 wheel steering setup).. since you say you got lsd with it, it might be, but you can tell if it looks like a steering rack is mounted on the subframe. I dont think it would be possible to hook that up (theres a bunch of computer devices for that etc), so you can get a hicas eliminator kits.

SPLHicasEliminator.jpg

One advantage of the hicas subframe is they come with bigger sway bars, but that can be swapped over to standard subframes as well.

 

http://Splparts.com has alot of good suspension links/arms parts etc.

 

Id recommend the option of going to subframe spacers/collars or bushings which fit over the exsisting stock bushings, they tend to get worn out, and for the little cost of the upgrade it helps make everything solid.

collars4.jpg

 

Thats pretty much it, rear upper control arms are nice to have to adjust camber.

Link to comment
Share on other sites

thanks man, its not HICAS. i did get recommended the solid mounts for the suspension. people say its a huge difference. you seem to know somewhat about the setup, do you have any pictures/info on mounting and suggestions on the coilover rates/sizes etc.? thanks

paul

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...