Car to lowered to drive on dyno???
06-02-2011, 01:37 PM
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Car to lowered to drive on dyno??? My 99 SS is at the dyno shop now and the guy cant drive it onto this dyno. The dyno in question is a mustang dyno where the rear wheels sit between the rollers rather then on top. When he drives it on my muffler (slp dual/dual)hits the floor. Anyone else ever run into this? He says he's never had this problem before and he's tuned tons of these cars, probably most of the modded f-body's in the portland/vancouver area. What can I do short of cutting the exhaust off?
06-02-2011, 01:43 PM
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Is there no way to jack it up just a little as you roll it on to the rollers?? Maybe jacking it up would be a little dangerous but if that is the case you may have to take it somewhere else because I would definitely NOT cut off my exhaust!
06-02-2011, 02:10 PM
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The car has pacesetter long tubes, catted y and the slp dual/dual welded on, cant just unbolt it, would have to be cut which I wont do. Its the actual muffler that sits to low.
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06-02-2011, 04:22 PM
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The problem isnt getting it on the dyno its that once he drives it onto the rollers and the rear wheels drop down between the 2 rollers that puts the rear muffler down on the ground.
06-03-2011, 12:27 PM
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So just an update on this. We did finally get the thing strappe down and dynoed (thanks to some wood blocks). I think my bumper is hanging down lower then it should because my car is not that low (about 2 fingers between tire and fender).
Anyway I watched the car go on the dyno and it did hit the ground. On this dyno you drive up in between 2 rollers and there's a little metal plate that the tires sit on. That plate then gets lowered so the tires drop down onto the rollers themselves. When we did this the muffer would hit the ground and going all the way down woud have probably caused damage.
The solution we came up with was to put a 4x4 block under each of my sub frame connectors so the back of the car didnt drop down as far. This ended up causing the tires to burn out on the rollers at WOT so I aired up the rears to 40psi and that worked.
Everything was fine after that. By the way I got 376rwhp/366rwtq from bolt on's and a small 224/224 112 cam.
Anyway I watched the car go on the dyno and it did hit the ground. On this dyno you drive up in between 2 rollers and there's a little metal plate that the tires sit on. That plate then gets lowered so the tires drop down onto the rollers themselves. When we did this the muffer would hit the ground and going all the way down woud have probably caused damage.
The solution we came up with was to put a 4x4 block under each of my sub frame connectors so the back of the car didnt drop down as far. This ended up causing the tires to burn out on the rollers at WOT so I aired up the rears to 40psi and that worked.
Everything was fine after that. By the way I got 376rwhp/366rwtq from bolt on's and a small 224/224 112 cam.
