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Could my engine cradle be off center????


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Hello everyone. So I just lowered my 2007 Shelby GT 500 with the Eibach R1 Coilover kit. Install went fine with no problems. But....... Now that it is lower the driver side front tire seems to be sticking out a little more than the passenger side tire (which seems to be perfectly placed. After lowering I took it to get aligned and everything is fine and the car drives straight. I have 19inch Forgeline wheels (which were designed to fit flush with the fender flare) and I am running a small spacer at the front to clear the front Brake Caliper (Yes, Both spacers are the same size).

 

Also a little more info....... last year i accidently hit a pretty big pot hole on the street while making a left turn with my driver side tire which actually made my car skid because of the impact. I absolutely did not see it. It was a dark rainy night. Everything seemed fine except that the tire that hit broke it's side wall and bulged. Could this event have caused my problem?

 

When I took it to get aligned I told the technician about this and he said everything aligned fine so the engine cradle might be slightly off center. So am I going crazy??? What do you guys think it could be? What should I get looked at on the car?

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  • 3 weeks later...

Hmmm.... could of bent the front LCA or LCA mount. It's easy enough to measure. However, if the tire is bulging on the side wall, get it replaced. Besides the annoying look, it probably means one of two things: 1) either the tire came unseated and it's bead isn't sealed properly, or 2) some of inner carcass of the tire separated. I would swap out tires, and take a few measurements.

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When I took it to get aligned I told the technician about this and he said everything aligned fine so the engine cradle might be slightly off center.

 

 

Jack up the front of the car (put a couple of stands under it) then slide under and look straight up between the two front mounting bolts (nuts) that mount the K-member/subframe to the body rails. There is a alignment hole on each side. The hole in the K-member should be lined up with the hole in the frame. If not, loosen the 8 K-member bolts and use a "Cats Claw" type crowbar with the long pointed end (i.e. a "pinch bar") and stick it through the hole and use it as a lever it to get the cradle aligned with the body member holes.

 

It's easy enough to check if the k-member is aligned with the body/frame but if the k-member is aligned, that doesn't mean it's not bent. Get a measuring tape and "cross measure" it in a X pattern (turn the X on its side"). Measure from the corner of one body frame rail to the opposite lower corner of the K-member and the measurements should be the same for both sides.

 

 

HTH,

Phill

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Thanks for all the iinfo guys. I'm going to crawl under today and give the alignment holes a look at. As for the K&N I don't have a tune for it and I have never dyno 'd it yet. I have had it for a while and everything is fine.

 

 

I doubt it is fine. If you are running the K&N without a tune you are running lean. Get a proven CAI that comes with a tune like the JLT, Ford Racing, C&L, etc.

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Well I crawled under yesterday and the alignment holes are where they are supposed to be at. This weekend I will try the Cross measurement tactic. As for a tune I have been looking at buying a Diablosport Trinity. Have any of you had experience with it?

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Well I crawled under yesterday and the alignment holes are where they are supposed to be at. This weekend I will try the Cross measurement tactic. As for a tune I have been looking at buying a Diablosport Trinity. Have any of you had experience with it?

 

 

I would have been surprised if the K member was not lined up properly. The workshop manual might be helpful. http://iihs.net/fsm/?dir=41

 

I use a SCT X3 tuner I bought from VMP along with a VMP pulley, idler and tune. My CAI is an FRPP that came with my TVS supercharger upgrade. I think you will find most run SCT with the GT500. Top tuners like Justin (VMP Tuning) and John Lund use the SCT tuner devices and software. What are you wanting to do with your car? Are you just looking for a CAI for now? Plans to bump HP with a smaller SC pulley or even a SC swap? Some of the best bang for the buck with HP increase is a CAI, pulley and tune. Here are some things to checkout.

 

http://www.vmptuning.com/store/index.php?p=catalog&parent=88&pg=1

 

http://jlttruecoldair.com/ZenCart/index.php?main_page=index&cPath=283_284

 

http://www.lethalperformance.com/07-09-shelby-gt500-power-packages-c-2052_2728

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I would also be surprised if the engine cradle is off center but my situation is kind of bugging me. What else might cause one wheel to stick out on one side more than the other? I have already measured the wheels and they are the same. When both wheels are laying on the floor they are the same height. I just can't figure this out and did not notice it until I lowered my car........ Does anybody know of any good chassis shops in the Los Angeles area. Also thanks for the info on the tuner I will check them out. PEACE!!!!

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