Track bar and tie rod: What hits, what doesn't?

You're only in that position for a very short amount of time at low speeds. Similarly, if you normally air down you might be able to get by with a slightly different bumpstop.
I didnt even think of that. I dont mind a bit of paint missing. With 1 inch of bump i am at 14.5 for the shock housing. With 1.5 bump I can fit a 15 inch stock. My spring gets a bit loose after 8 inchs of down travel.
 
I ordered a metal cloak trackbar which should have more clearance then my rubicon express but I guess I'll find out next week.

The MC trackbar uses a heim in a high wear orientation. I'd suggest going with something with a JJ instead.
 
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Turning is where I am getting the Interference. I still have about 2 inches to the top of the fender.



As far as I can tell MC made a compromise between ease of install with the battery and tire clearance when turning. There's no other reason for them to give so little room behind the tire. I think it's obvious which took priority.

What looks good on the ramp or trailer doesn't always carry over to the rocks.

Still, there appears to be a gain with 35s. My 33s with stock fenders and the body lift need about 1.5" of extension. It looks like Alex is getting another inch of tire with a little less extension. Could be better, could be worse.
 
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I didnt even think of that. I dont mind a bit of paint missing. With 1 inch of bump i am at 14.5 for the shock housing. With 1.5 bump I can fit a 15 inch stock. My spring gets a bit loose after 8 inchs of down travel.
That's the way to think about this. One caveat in the juggling of compromises is that longer bump stops also mean a longer compressed shock.
 
What to what are you measuring?

Where the shock mounts to the axle to the top of the housing.

20190108_200420.jpg
20190108_200440.jpg


How long are they?

Exactly 1 incch
 
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Still, there is a gain with 35s. My 33s with stock fenders and the body lift need about 1.5" of extension. It looks like Alex is getting another inch of tire with a little less extension.

So you're saying that the MC fenders allow for 1"+ of travel on an otherwise stock Jeep?

Without me reading this entire thread, did you compare actual tire size (with compensation for tread wear) and ride height? I think tire size is going to quickly effect the gain due to the angle of the fender behind the tire.
 
If you go too far your tire will push the stronger MC fenders and bend the tub. Use moderation.
As of now then I will be thinking of going with the 1.5 bump numbers.

Thanks for all the help guys. I'll check in again hopefully next week when I get the track bar and measure the drivers side. Then I'll be on a quest to find shocks that fit better.
 
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So you're saying that the MC fenders allow for 1"+ of travel on an otherwise stock Jeep?

Without me reading this entire thread, did you compare actual tire size (with compensation for tread wear) and ride height? I think tire size is going to quickly effect the gain due to the angle of the fender behind the tire.

These are estimates based on what I see here and what I know about mine. It appears as though on an existing setup for 33s under stock fenders, 35s can fit with little to no additional BS extension. On an existing setup with 35s under stock fenders, some BS extension may be reduced if the shocks (etc) don't get in the way. We are talking no more than a generous 1.375" somewhere depending on the tires, shocks, etc being compared. Make the most of it.

As you have shown, this doesn't carry very well into 37s because of the interference at the back fender wall.
 
These are estimates based on what I see here and what I know about mine. It appears as though on an existing setup for 33s under stock fenders, 35s can fit with little to no additional BS extension. On an existing setup with 35s under stock fenders, some BS extension may be reduced if the shocks (etc) don't get in the way. We are talking no more than a generous 1.375" somewhere depending on the tires, shocks, etc being compared. Make the most of it.

As you have shown, this doesn't translate well into 37s because of the interference at the back fender wall.
I believe your right. I would think with 37s you would actually need more bump due to the rear.

The blue area I circled is my point of contact.
Capture.PNG
 
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And to think this all could have been answered years ago....

Awesome work, seeing it done this way is a bit more understandable vs a picture with highlights, circles and numbers IMO. Once you cycle everything it really becomes clear that bumpstops are a very important piece that are more-often-than-not are just a guess. Doing this is giving you every bit of travel possible.
 
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And to think this all could have been answered years ago....

Awesome work, seeing it done this way is a bit more understandable vs a picture with highlights, circles and numbers IMO. Once you cycle everything it really becomes clear that bumpstops are a very important piece that are more-often-than-not are just a guess. Doing this is giving you every bit of travel possible.
It was a great learning experience for me. I didn't realize just how much of a difference having the opposite side at full droop would make.
 
It was a great learning experience for me. I didn't realize just how much of a difference having the opposite side at full droop would make.
When I describe bump stop extensions and where the requirements are, this is exactly why I mention tires mashing into the front fender sheet metal at full flex. There is less room up front than in back.
 
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Also, now that you know your minimum required bump stop is about 1", you can move your shock mounts so that you can fit a longer travel shock to where it's compressed length will match that bump stop length.
 
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Thus the need for the right amount of bump stop.

Currie is a track bar that is well known to be very well designed in terms of not binding up. However, anything will bind up without enough bump stop.

I'm curious to hear what @mrblaine knows about this. I'll bet he has experience with a lot of different track bar / axle setups.

The differential on the front Dana 44 Rubicon axle sticks out further than the Dana 30, so you have to worry more about stuff binding up on that axle.


I have the MC trackbar and a Dana 44 W/ 4.5 in of lift. Would I just be extra sure my bumpstops are correct to prevent damage?