1988 Comanche BMW M57 Swap, Rear Coils

[colthrax]

Rear axle arrived, been lazy and have not gotten much done.

[colthrax]

Started putting the front axle on the car, today I tried to mount the tie rod thing, it hits the control arms with patrols dumb location of it

 

Need to make some kind of high steer, 3d printing it before cutting this time. 

 

 

[colthrax]

I hope this will be enough

[colthrax]

Finally the axles are on the car, I hope I will have it running this saturday 

 

 

[colthrax]

Axles are mounted, airlocker is installed in the front axle and rear one is converted to air. Just got to make some protection for the rear one

[colthrax]

I had welded my old rims to fit the new bolt pattern, but at around 110–120 km/h, the car started to wobble a bit.

Today, I went to check out some new rims and a set of 38.5" Super Swampers. When I got there, the guy had a set of 40" Cooper tires already mounted on the rims. He wasn’t planning to sell them—but I managed to convince him. So now I'm rolling on 40s! 😄

 

 

My old rims

 

and new ones, got to weld beadlocks on them but as sweden offroad tour is starting tomorrow I do not have time.

 

 

[colthrax]

Had to extend my front fenders, but still got alot of trimming left to do. Will join in on sweden offroad tour 3 days late

 

[colthrax]

After sweden offroad tour, my dad with his 35's did not like driving with me  He has started to prototype dana30 bolt on portals because of it now

 

 

[neohic]

11 hours ago, colthrax said:

After sweden offroad tour, my dad with his 35's did not like driving with me  He has started to prototype dana30 bolt on portals because of it now

 

 

Rad! 

[speeding_infraction]

On 8/9/2025 at 1:07 AM, colthrax said:

After sweden offroad tour, my dad with his 35's did not like driving with me  He has started to prototype dana30 bolt on portals because of it now

 

 

Man, all my buddies have 37s, maybe I should do these to my TJ🤔

[MancheKid86]

man this thing is sick! great work! 

[colthrax]

This weekend my project on moving the rear axle forwards abit so I get the same wheelbase as a shortbed will start.

 

also bought a new steering hydro assist thing, found the part from a tractor. 

 

[A-man930]

On 8/9/2025 at 12:07 AM, colthrax said:

After sweden offroad tour, my dad with his 35's did not like driving with me  He has started to prototype dana30 bolt on portals because of it now

 

 

 

I've always wondered how badly that extra leverage will wear the ball joints. 

[colthrax]

5 hours ago, A-man930 said:

 

I've always wondered how badly that extra leverage will wear the ball joints. 

I hope it won't be any problem

But it's a slow side project, just decided on gears instead of chain in them so it has to be redone. Printed a working model in 1:1 size with a chain and that worked. But finding a chain was hard...

[colthrax]

And here we go…
I should have done this from the start instead of just cutting the rear of the bed.

I’m moving the rear axle forward by 17.5 cm to match a shortbed wheelbase. When I cut the bed, it ended up with shortbed dimensions, so now I also need to move the wheel opening forward and fill in the section behind it.

 

[colthrax]

The axle is now correctly positioned. The remaining work is to cut and relocate the wheel arch and fill in the area behind it.

 

 

 

[colthrax]

I think the proportions looks better like this, before it looked stretched.

 

 

Steering seems to work alright, abit scary on the road. Maybe too much angle on the joints?

 

I also need to repaint the car because of all the dents and crap. Not sure I want it orange anymore. I have alot of TGB11/13 paint but don't know what I think about it

 

AI image:

 

 

 

 

 

[neohic]

Truck looks great! I kinda like the orange though. Maybe try another bright color before drag green?

[colthrax]

16 hours ago, neohic said:

Truck looks great! I kinda like the orange though. Maybe try another bright color before drag green?

Ahh I been told this alot haha, guess I will buy some more orange paint and paint it the same for now then. Thanks  

[89 MJ]

I like the green

[colthrax]

38 minutes ago, 89 MJ said:

I like the green

Nooo  damn you are the first person to agree with me

[colthrax]

So I finally went ahead and mounted the radiator in the rear instead. Looks like the cage actually helps channel the air downwards, which is a nice bonus 
I also cycled the suspension to make sure nothing rubs in the rear after moving the axle forward.
Next step is figuring out some kind of bed cover. I’m currently leaning towards diamond plate aluminum.

 

 

 

 

 

Also this is before and after moving the axle, the wheel wells are bigger now to make room for the 40's and the 42's I will switch to later. 

 

 

 

 

[colthrax]

Finally got to test the car with the changes, it's horrible to drive on the round at 60mph ish. Need to adjust the flow to the steering assist thing