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Advanced Fabrication and Engineering If you are worried about your project still being called an XJ or MJ, this is the place for you. If you haven't ever had a slag burn or know the smell of burning flesh, tread lightly.

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  #1  
Old September 19th, 2006, 12:29
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ashmanjeepxj ashmanjeepxj is offline
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Front Coilover mounting Hoop, Pics..wanted.

Im looking at ideas for front coilover hoops. I have 16in 2.5in coilovers, with 6in of up travel mounted on top of the dana 60 inner C so it will come through the hood. Id like to not need to move the brake MC.

I found these pictures on XJ db one with the brake MC and one with it removed. Id like to not move the mc.





This is what I have to work with, no 4.0 so I have more room then most. This red lines show about where the coilover mount would be with weight compressign the springs...




I could run tube from the a-pillar spreader to the radiator hoop similar to the second picture. that would be alot of work...

Last edited by ashmanjeepxj; September 19th, 2006 at 12:34.
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  #2  
Old September 19th, 2006, 17:19
hadfield4wd hadfield4wd is offline
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Re: Front Coilover mounting Hoop, Pics..wanted.

These are Arcticxj's. If I remember correctly the cut the cross brace and put flanges in so he coud get to the engine.





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  #3  
Old September 19th, 2006, 17:27
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ashmanjeepxj ashmanjeepxj is offline
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Re: Front Coilover mounting Hoop, Pics..wanted.

That is more like I was thinking.

Mine will need to be higher and the cross tube would need to be further forward.

I like that setup, any other versions?
Thanks
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  #4  
Old September 20th, 2006, 20:06
Jeff 98XJ WI Jeff 98XJ WI is offline
 
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Re: Front Coilover mounting Hoop, Pics..wanted.

So Ashman, where have you been? I haven't seen any posts from you in quite awhile. Did you get that engine/drivetrain swap finished? Is there a thread showing the finished product somewhere? How's it working? Jeff
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  #5  
Old September 20th, 2006, 20:45
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Re: Front Coilover mounting Hoop, Pics..wanted.

its up a PBB..... def my favorite thread
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  #6  
Old September 20th, 2006, 23:53
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Re: Front Coilover mounting Hoop, Pics..wanted.

I think you'd want a hoop that runs lengthwise of the Jeep to minimize the hole in the hood. I'd make a hoop to come off the side of the frame rails pretty much straight up through the hood with the shock mounts attached to the bottom of the hoop. Weld two short pieces of tube straight out from the frame, then weld the bottom of the hoop to the top of those short pieces. You can then tie the hoop into other tubing to the side underneath the hood.

One idea......
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  #7  
Old September 21st, 2006, 08:29
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Re: Front Coilover mounting Hoop, Pics..wanted.

Quote:
Originally Posted by Goatman
I'd make a hoop to come off the side of the frame rails pretty much straight up through the hood with the shock mounts attached to the bottom of the hoop.
The brake MC is in the way, The hoop would have to go almost out to the fender not straight up, The tire would hit the hoop on up travel, and the tire would hit the coil over. It could be an option like shown on the red cherokee to do that hoop then run a second hoop form the top of the frame rail to the top of the hoop near the fender. still the tire coudl hit the hoop but not the coilover.

I agree If there were no clearance issues Thats the simplist solution. Ill have to realy consider moving the Brake booster and MC. If its not to difficult that would make more sence to move then build a jungle gym around it.

I do plan to cut into the fenders as needed to get uptravel. The wheel well dosent fit 42s very well. on my past leaf spring setups Ive only had about 3-4in of vertical up travel
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Old September 21st, 2006, 12:50
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Re: Front Coilover mounting Hoop, Pics..wanted.

Yeah, I saw that when I was working on mine this morning. But, it looks like you could run the hoop just to the outside of the M/C and have the shock mount tabs to the inside of the hoop. You might not be able to lean the shock back as far as you want, if you want to lean it back that far, but there's room in front of the M/C for the shock to go, especially since the lower mount is further forward on the inner C.
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  #9  
Old September 21st, 2006, 14:18
FernXJ FernXJ is offline
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Re: Front Coilover mounting Hoop, Pics..wanted.

What if you fit a tight hoop in front of the MC, then tie it into your tubes outside the fenders. Would keep your supports out of the tires way. Then you could weasel in linking supports across the engine. Doesn't sound or look like you'll fit anything simple and easy.
Rensing
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  #10  
Old September 22nd, 2006, 11:36
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Re: Front Coilover mounting Hoop, Pics..wanted.

You are correct, Hadfield. I havent looked at those pics in awhile.... here are a couple others. Feel free to question any of the mounting. I get a lot of inquiry as to why it was built as it was.






... Ashman, I've admired that XJ (xj... right) of yours for a long time, and have been following the build for some time. Actually, you were just rolling that thing out into your driveway with an air hose chucked up to it to test the airshocks back when I was putting 2" poly spacers on top of my coils to fit my 33's.
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  #11  
Old September 23rd, 2006, 11:59
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Re: Front Coilover mounting Hoop, Pics..wanted.

Quote:
Originally Posted by ArcticXJ
You are correct, Hadfield. I havent looked at those pics in awhile.... here are a couple others. Feel free to question any of the mounting. I get a lot of inquiry as to why it was built as it was.

... Ashman, I've admired that XJ (xj... right) of yours for a long time, and have been following the build for some time. Actually, you were just rolling that thing out into your driveway with an air hose chucked up to it to test the airshocks back when I was putting 2" poly spacers on top of my coils to fit my 33's.
Any thing you would do different?

I just got my wireless at home installed. Its haulin ASS. Its feals faster then my 100MB connecton at work, just less traffic... Im stoked. more web wheelin
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  #12  
Old September 25th, 2006, 15:26
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Re: Front Coilover mounting Hoop, Pics..wanted.

Suspension wise, I wouldnt do anything different, except locate the axle a bit further forward. I'm happy with the way its setup, outside of that.

If I could do it ALL OVER again, I never would have had to use the coilovers because I would have built a housing from the aftermarket using correct length tubes to allow my coils to sit where they sat on the d30. Even with the '78-'79 hp60, I wouldve spent a grand or more, and ended up keeping only the hubs, knuckles, and spindles. I'd be better off just spending the money for a Pro Rock housing or one from RockCrusher, Crane, etc.

Oh, and as far as the rates on your rig, they'll need to be fairly stiff. I run a 250 tender over 300 main spring, and its just right. I started off with a 250/400 combo and it was plenty stiff. Too much so. I'd assume your front end with all the tubing and that SBC would benefit from at least 250/400. I still have the 400lb coils sitting in a box in the Jeep by the way, if you'd like to give them a try. Might save you a couple bucks in the long run.
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  #13  
Old September 25th, 2006, 17:55
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Re: Front Coilover mounting Hoop, Pics..wanted.

Quote:
Originally Posted by ArcticXJ
Suspension wise, I wouldnt do anything different, except locate the axle a bit further forward. I'm happy with the way its setup, outside of that.

If I could do it ALL OVER again, I never would have had to use the coilovers because I would have built a housing from the aftermarket using correct length tubes to allow my coils to sit where they sat on the d30. Even with the '78-'79 hp60, I wouldve spent a grand or more, and ended up keeping only the hubs, knuckles, and spindles. I'd be better off just spending the money for a Pro Rock housing or one from RockCrusher, Crane, etc.

Oh, and as far as the rates on your rig, they'll need to be fairly stiff. I run a 250 tender over 300 main spring, and its just right. I started off with a 250/400 combo and it was plenty stiff. Too much so. I'd assume your front end with all the tubing and that SBC would benefit from at least 250/400. I still have the 400lb coils sitting in a box in the Jeep by the way, if you'd like to give them a try. Might save you a couple bucks in the long run.
What length coil overs, what length coils?
Im runnign 16s, I want a 16in over 16in coils.

Today I tack welded all my links in place, no binding on up or down travel. I set my bumpstops but when I articulated it I only get 10in of down travel til my drivers side upper link hits the pinnion, housing, and lower link all at the same time. The passenger side also hits the lower link at about 10in of down travel.

Ill have to shorten the upper links get them alittle wider out, and move the axle ends up about 3/4in and it will be better. I hope that will get me the full 16in of articulation. I might loose my pinnion angle control with the shorter uppers from 36in now to probably 30in. If I have drive shaft bind Ill just center limit strap it. Frustrating to build and re build.
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  #14  
Old September 25th, 2006, 21:12
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Re: Front Coilover mounting Hoop, Pics..wanted.

Ahhh, sorry. My Fox's are 14's. The reasons you are stating for frustrations in trying to accomodate all 16 inches of those shocks' available travel are exactly why I have the 14 inch models. I knew that my mechanical steering would be maxxed at with 14" shocks, and I'd be running into pinion angle, driveshaft, and other problems.

Just because you *can* get 16" of travel out of them doesnt mean you necessarily need to. Limiting straps are your friend.
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  #15  
Old September 26th, 2006, 11:57
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Re: Front Coilover mounting Hoop, Pics..wanted.

Quote:
Originally Posted by ArcticXJ
Ahhh, sorry. My Fox's are 14's. The reasons you are stating for frustrations in trying to accomodate all 16 inches of those shocks' available travel are exactly why I have the 14 inch models. I knew that my mechanical steering would be maxxed at with 14" shocks, and I'd be running into pinion angle, driveshaft, and other problems.

Just because you *can* get 16" of travel out of them doesnt mean you necessarily need to. Limiting straps are your friend.
42s and the 350-th400-203-205 didnt fit in the cherokee easily.
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