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Old 11-12-2009, 10:42 AM   #61
boostedinaz
Black wheels... how original
 
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How about 'Chicken and I bring you our cars and write you a check? How about that?

Seriously. How much would that run? My PM box is ready like a drunken prom date.

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Find someone local-ish we can trust wont be easy.

There is a guy here in AZ that does amazing fab work that could do this. I would post a link of his work but he obviously isn't a sponsor. If you want I can PM you guys the website to check it out.
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I immediately started laughing because I came up with that on the spot and in my head I was like “flailing dyke arms…..haha tom you brilliant son of a bitch”

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Old 11-12-2009, 12:38 PM   #62
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You should be able to post a non-clickable web address. Just copy the address from the address bar and paste it into a post without using the "[url]" tags. AFAIK, that's what the rule is. Worst case scenario is that it gets deleted.
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Old 11-12-2009, 01:19 PM   #63
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Black wheels... how original
 
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Okay. If this isn't okay mods just tell and I will delete it.

Google precisionchassisworks
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Old 11-12-2009, 02:14 PM   #64
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Pfffft...pul-eeeze. Every mile on that GTO is a hard mile. I refuse to ride with you again until you install an ejector seat, you psycho.

Srsly folks. When Jason sees a stop sign he accelerates....lol.


LOL, I can't help it if your weak!
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Old 11-16-2009, 09:06 PM   #65
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not a pontiac its a HOLDEN !!
 
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very nice !!!

how many bolts are holding the plate in ? you said 1 of them is on the floor pan from the factory correct ? and you enlarge 1 hole per-side which is 1 of the gas tank brace bolt holes ?
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Old 11-16-2009, 09:16 PM   #66
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For each side there is one big 1/2 bolt that goes down through the frame rail from inside the trunk and then you also pick up an existing 10mm stud that is on the frame.
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Old 11-16-2009, 09:32 PM   #67
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would there be any benefit to mounting the plate using the stock shock location too ? or a brace plate to mount to the inside floor ?

hope bmr didnt wack that studs off on mine , they did alot of weird things to my 04 , lol
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Old 11-16-2009, 09:44 PM   #68
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No, the stock shock location wont work. The bracket is held on really well.
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Old 11-16-2009, 09:52 PM   #69
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i was kinda thinking just a 3rd mounting point , kinda a free mounting spot , lol

mine hasnt hopped , think it was more of tire shake , cause it wasnt to violent feeling , like my 06 has done , just wanna make sure any wheel hop/tire shake isnt gonna destroy the floor pan

thank you for the answers
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Old 11-17-2009, 01:41 PM   #70
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Kingsize:

How are these holding up Man?? Any Updates??
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Old 11-17-2009, 01:53 PM   #71
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Been great... No problems yet. They feel great on the street. I will definitely be going with a softer spring. I have a little too much rebound on the track. I can't dial in the rebound control enough to handle the spring and allow the rear to stay planted without unloading the tires when I make a hard hit. I will go with a #110-125 spring.
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Old 11-17-2009, 02:04 PM   #72
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and you currently have a 150 # spring correct??
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Old 11-17-2009, 08:31 PM   #73
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Quote:
Originally Posted by posenheimer...View Post
and you currently have a 150 # spring correct??

Correct
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Old 11-17-2009, 08:55 PM   #74
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Been great... No problems yet. They feel great on the street. I will definitely be going with a softer spring. I have a little too much rebound on the track. I can't dial in the rebound control enough to handle the spring and allow the rear to stay planted without unloading the tires when I make a hard hit. I will go with a #110-125 spring.

What does that mean exactly? Is that a fancy way of saying you got wheel hop? lol
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Old 11-18-2009, 04:27 AM   #75
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What does that mean exactly? Is that a fancy way of saying you got wheel hop? lol

Not wheel hop necessarily. I've felt that and this is different. The spring still seems too heavy. When it compresses when I first launch, there is not enough rebound control in the shock to control the springs rebound energy. Right about the time when I'm leaving good (about 30'-40' out), the weight has unloaded the rear, I loose all traction, and I have to pedal it for a while. I think with a softer spring the rebound energy could be more controlled and allow the rear to squat, stay squatted, and keep the tires loaded when I make a hard pass. Keep in mind... I am hitting the tires at just over 5000 RPM.
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Old 11-18-2009, 06:38 AM   #76
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Jason, is this on the track?
Reason I ask is our local track does this to my car, about 50-60 out all hell breaks loose and the tires go up in smoke.
After racing on several different tracks I come to the conclusion that it wasnt my car but rather a poor track surface about 50-60 out.
I'm going to add a bracket in my trun so I can add weight pucks to dial in my suspension better at the track. Sometimes a little bit of weight on the back of the car does wonders for traction.
Sounds like overall the coil overs are working out well for you.

Thanks
Chris
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Old 11-18-2009, 06:54 AM   #77
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With our (Gto) Style IRS setups, suspension wise is it better to try to keep the rear end super soft and keep it squatted for traction at a drag strip??
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Old 11-18-2009, 07:05 AM   #78
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With our (Gto) Style IRS setups, suspension wise is it better to try to keep the rear end super soft and keep it squatted for traction at a drag strip??

Pretty much yea, same goes for any car at the drag strip. You have to keep the weight pushing down on the tires.
If the suspension springs back up then the weight comes with it and then the tires spin from lack of weight forcing them down.
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Old 11-18-2009, 07:16 AM   #79
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weight pushing down on the tires means the rear raises

when a car squats , its unloading the weight on the tires as they are getting pulled into the wheel wells

you want some squat to set the initial weight transfer , then the suspension to push the tires into the ground which raises the car

this is more solid axle car , but the way our irs is odd anyways
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Old 11-18-2009, 08:51 AM   #80
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I know ours is kinda weird. Lol... Ours squat alot more than other IRS cars... The fast GTOs at the strip are squatted almost the whole way down the 1/4 mile. LOL

but I have watched low 9 second VIPER Passes and they do not squat near as much (nor do Cobras)
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Old 11-18-2009, 12:30 PM   #81
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Quote:
Originally Posted by Gforce1320...View Post
Jason, is this on the track?
Reason I ask is our local track does this to my car, about 50-60 out all hell breaks loose and the tires go up in smoke.
After racing on several different tracks I come to the conclusion that it wasnt my car but rather a poor track surface about 50-60 out.
I'm going to add a bracket in my trun so I can add weight pucks to dial in my suspension better at the track. Sometimes a little bit of weight on the back of the car does wonders for traction.
Sounds like overall the coil overs are working out well for you.

Thanks
Chris

Yes it is on the track. It doesn't feel like track prep. It really feels like I still have the car oversprung. It got better as I dialed in more rebound control but I just ran out of adjustment. I really think a softer spring (somewhere between a #110-125) will be much better for the track by allowing the rear to stay planted longer. It will also allow me to control the rise over a period of time if the spring is soft enough. On the street it feels awesome. Hooks every time. Haven't had any issues with the hard parts. I just need to get the suspension dialed in. That is most likely going to be different for everyone. It's a great setup no doubt, and miles ahead the stock stuff as far as adjustability.
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