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R-230 Guys need to read (updated w/ pics)


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I have the R-230 in my car(240 with lt-1 and t-56. The car sees losts of track time. I have the Q 45 half shafts with 4 inner CV's and custom moser axels. I have had this set up in the car for about 7 years now. I thought I had the bugs worked out after so much track time.

 

Recently went to VIR and found anothe problem that has never showed up until now. The stops that are machined to fit in the inner located CV to prevent axel travel have always worked. The axel has always tried to move inboard. I ran the North course at VIR and had a problem with the axel moving out board on one particular turn. It happened several times on that same turn. Made a run home to Charlotte and brought back more parts. Same result. Same turn. Hard right up hill (turn 7 ) really loading the left rear of the car. Left axel walked out not in.

 

So I'm now putting stops on the out board CV's. If you guys don't track your cars this will probably never happen but since what Ross and Tim are selling are based on my car, I thought you guys should know. It's an easy fix. I'll post pics as it goes back together.

 

Mark

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Boy, I kinda hate to chime in here because I haven't progressed much on my R230 swap lately, but why hasn't anyone, at least that I'm aware of, pursued the route I'm taking? Which is, to modify the R230 outer axle flange so it mates to the Z car companion flange? That way, all you need is a shorter, stock configured, axle, which is retained in the outer CV joint and slides in and out of the inner CV joint, just like the Nissan engineers designed it to do. It would essentially be a shortened stock R230 shaft with an adapter on the outer side that mates to the Z car companion flange. That way, you retain the configuration that Nissan engineered and "walking" problems are eliminated. I know that my method will require that the adaptor be welded to the modified outer axle flange, but, if done correctly, I end up with a factory stock shaft that's several inches shorter.

 

Mike Mileski

Tucson, AZ

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Mike,

While that is a valid solution, I can see that the problem would arise when (or if, I suppose) you need to replace the outer CV due to wear.

My CVs are locked to the shafts so that the shafts cannot slide on the hub. I just don't think that the way it is configured it will be a problem.

 

Tim

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Mike, your solution seems like it would be best by far. However, I'm not an engineer and it's been along time since I stayed at a Holiday Express. :D If you ever do finish it, make soem extra parts and I'll buy some from you. I ahve discussed this with Ross and hoped he could come up with something better. I even sent him a link to you solution.

 

Tim,

I really do neeed to post a pic to show what is happening. My CV's don't move on the shaft either. The shaft and the CV's slide pulling the opposite CV out of the housing. The CV is still on the shaft. The axel deforms the end cap or goes thru the end cap. This extra movement allows enough movement to pull the other CV out of the housing just enough to slip. Let off power in it pops back into place. Hard to imagine but I have had it happen enough times over the years to be very familer with it. I'll post a pic later. Mark

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Tim,

I've checked that. It does seem like that is the problem but with the spring out of the car and putting the suspension thru the full range of motion, I have no binding, not even close. Plenty of room for the shaft to slide. A pic is worth a thousand words, especially my words. Mark

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DSC00004.JPG

 

Note bright area at bottom of pic. That is from the balls in the CV popping out and burnishing this area

 

DSC00002%7E0.JPG

 

This is how the CV looks when over extended. The other CV is still in the housing and is not binding on anything. Movement of the shaft, I guess, and the CV's is caused by suspension movement and shaft rotation? Any oen have anyvthoughts. I've got solid stops on each end so I see what happens next.

 

 

DSC00005.JPG

 

This is what an axel can do to an end cap

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Mark,

The way mine is set up, the axle does not extend passed the outer CV cage, os if anything WAS to bump the end cap, it would be the cage....

The pictures here, will give somewhat of an idea:

http://hybridz.org/nuke/index.php?name=PNphpBB2&file=viewtopic&t=30930

Tim

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