Guest V8Z Posted January 17, 2005 Share Posted January 17, 2005 I just put coilovers from MM all the way around my 240z, also changed over to five lugs. Well, I barrowed a set of my friends 17x8 factory mustang wheels with 235-45-17 on them to bolt on and take some measurments before ordering my new rims. The backspace measured 5.75 from were the hub contacts to the outside of the rim. The fronts bolted up great and even look like the right backspace so they are fine, but it's the rear that is giving me some trouble. I put on the rotors and bolted up the wheel and tire and it fits great in the fenders but is hitting the ground control aluminium spring perch. I do not want to run the parch up anymore cause I love the low ride height and if I put a spacer on it I'm afriad it will make the tire stick out past the fender. So, What do you guys think, spacer, run perch up, or change the backspace? Quote Link to comment Share on other sites More sharing options...
Drax240z Posted January 17, 2005 Share Posted January 17, 2005 Can you run shorter springs? Quote Link to comment Share on other sites More sharing options...
Guest V8Z Posted January 17, 2005 Share Posted January 17, 2005 I'm running the 10" hypercoils. I like to keep running these since I just bought them but if it comes down to it that might be an easy solution. Quote Link to comment Share on other sites More sharing options...
blueovalz Posted January 17, 2005 Share Posted January 17, 2005 Any photos? Is the perch a larger diameter than the spring, and if so, by how much? Is the perch sitting even with the rim, or at the tire's section width, or somewhere else? I'm wondering because perhaps a sleeve or narrow spacer of sorts, between the perch and the bottom of the spring, may give you the needed space by allowing you to lower the perch below the wheel's rim, but still maintain the ride height you desire. Quote Link to comment Share on other sites More sharing options...
Guest V8Z Posted January 17, 2005 Share Posted January 17, 2005 The perch may be 1/8" larger diameter. The perch is actually hitting the middle of the 45 series tire. Quote Link to comment Share on other sites More sharing options...
Guest V8Z Posted January 17, 2005 Share Posted January 17, 2005 If the mustang rims that I'm test fitting are 5.75 backspace would a 5.5 or 5.25 backspace move it away from the coilover? Quote Link to comment Share on other sites More sharing options...
Guest iskone Posted January 17, 2005 Share Posted January 17, 2005 I'd go 8" spring. You could also try to make some 1/4" spacer out of what ever you have lying around, for mock up porpuses. I'd just use some wood or something. Isk Quote Link to comment Share on other sites More sharing options...
Guest V8Z Posted January 17, 2005 Share Posted January 17, 2005 Who sells spacers and how much do they usaully cost? Quote Link to comment Share on other sites More sharing options...
buZy Posted January 17, 2005 Share Posted January 17, 2005 What about camber plates and tip the strut in more? Quote Link to comment Share on other sites More sharing options...
Guest V8Z Posted January 17, 2005 Share Posted January 17, 2005 I didn't buy the camber plates for the rear, for cost reasons. But once agian it might come down to that. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted January 17, 2005 Share Posted January 17, 2005 The camber plate won't change the relation of the stut tube to the tire. I'd go with Isk's suggestion and try a 1/4" lug centered wheel spacer. Coleman Racing sells some billet aluminum ones. They are kind of pricey but much better than the crappy tire store ones. Quote Link to comment Share on other sites More sharing options...
Guest 240zJake Posted January 17, 2005 Share Posted January 17, 2005 You could use 1/4" washer, only to see if it fits, so you can be sure it won't rub the fender before you buy the spacers Quote Link to comment Share on other sites More sharing options...
mark Posted January 17, 2005 Share Posted January 17, 2005 Camber plates won't fix you problem. Use the 8 inch springs. This will oe the perch up 2 inches and give you the room you need and keep the ride height where it is at. mark Quote Link to comment Share on other sites More sharing options...
Mikelly Posted January 17, 2005 Share Posted January 17, 2005 Here's what I did with my stock fendered Z, coil overs and Mustang 8 inch wheels with 255-45-17s... I used a 1/4 inch wheel spacer with the tire mounted to get the sidewall to clear the perch... You can also run 1/2 inch spacer and roll the inner fender lip with a piece of pipe... Most of the guys are doing this to give more clearance. Keep in mind, I was running the ground control 12 inch springs, so your 10 inch springs should be fine... now I am running 10 inch springs, and they are on the car in the pics.. If you have access to yahoo... go here and you can see the wheels on the car... It is the car with the primered back half and white fenders/ doors http://photos.yahoo.com/dat74z Mike Quote Link to comment Share on other sites More sharing options...
zguitar71 Posted January 17, 2005 Share Posted January 17, 2005 Camber plates will not change the relation of the wheel spacing to the strut. When you move the strut in (to change the camber) the wheel will move with it, they move together as one unit. You will have to change the offset or the location of the spring perch. A spacer is probably the cheaper way to go, thin spacers (1/4" or so) probably cost less than 2 8" springs. Quote Link to comment Share on other sites More sharing options...
Guest V8Z Posted January 17, 2005 Share Posted January 17, 2005 I put 1/4 in. worth of spacers- washers on the rear and it spaced the wheel and tire away from it where it is not hitting. Probably around 3/16 in. space. Do you guys think that's enough? Take a look a the pictures below, it really didn't make the wheel in the rear stick out as far as I thought. http://album.hybridz.org/showphoto.php?photo=1137&password=lokkiteb&sort=1&cat=533&page=1 Quote Link to comment Share on other sites More sharing options...
JMortensen Posted January 17, 2005 Share Posted January 17, 2005 I'd put a 1/2" spacer in there. Looks like you've got the room for it. Do you have long studs? You'll need them with ANY spacer on a Z. The stock studs are really just barely long enough. I believe the 2nd Gen RX7 studs are what I have, they are 12mm x 1.5mm threads, and they press right into the stubs without having to redrill or any of that crap. Quote Link to comment Share on other sites More sharing options...
Guest V8Z Posted January 17, 2005 Share Posted January 17, 2005 I had my rear stub axel redrilled to 5 lug by Ross at MM, and he press in these extra long studs, so there is plenty of room for spacers. Does everyone agree on the 5.75 backspace all the way around in the pictures? Cause I want to order my wheels this week and want to be very sure on the backspace. Quote Link to comment Share on other sites More sharing options...
mark Posted January 17, 2005 Share Posted January 17, 2005 If you are going to order wheels, I would get the correct backspacing for the rear and not use spacers. JMHO. Mark Quote Link to comment Share on other sites More sharing options...
JMortensen Posted January 17, 2005 Share Posted January 17, 2005 If you are going to order wheels, I would get the correct backspacing for the rear and not use spacers. JMHO. Yep. I thought you had the wheels already. Sorry. Quote Link to comment Share on other sites More sharing options...
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