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Old 04-26-2010, 11:35 PM   #15
sting808

 
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JusticePete,

My package came with the EP6577 bushes, EP1200 cradle inserts, and EP1167 diff mounts. I will not be racing the car, but bought the XA Extreme Street II+ based on value back in Dec. I know this is subjective, but for mainly street driving, should I consider the radius rod inserts over the EP6577 bushes?

Is NVH dramatically increased between the inserts vs the bushings? I already have 20x10 and 20x11.5 wheels and a semi-loud 3" cat-back. Do you think the bushings will transmit a lot more noticable noise/vibration to the front suspension/steering over the inserts? If so, I don't mind downgrading to the inserts since I don't plan to take the car on a road course. I merely wanted the coil-overs for drop and swaybar to help with body roll.

What's the difference between EP6579 & EP6578?

Thx.
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Old 04-27-2010, 12:09 AM   #16
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Quote:
Originally Posted by sting808 View Post
JusticePete,

My package came with the EP6577 bushes, EP1200 cradle inserts, and EP1167 diff mounts. I will not be racing the car, but bought the XA Extreme Street II+ based on value back in Dec. I know this is subjective, but for mainly street driving, should I consider the radius rod inserts over the EP6577 bushes?

Is NVH dramatically increased between the inserts vs the bushings? I already have 20x10 and 20x11.5 wheels and a semi-loud 3" cat-back. Do you think the bushings will transmit a lot more noticeable noise/vibration to the front suspension/steering over the inserts? If so, I don't mind downgrading to the inserts since I don't plan to take the car on a road course. I merely wanted the coil-overs for drop and swaybar to help with body roll.

What's the difference between EP6579 & EP6578?

Thx.
With a cat-back, you will never hear a difference. Unless you are concerned about pressing the old bushes out and pressing the new bushes in, you are good to go.
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Old 04-27-2010, 02:58 AM   #17
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Quote:
Originally Posted by sting808 View Post
JusticePete,

My package came with the EP6577 bushes, EP1200 cradle inserts, and EP1167 diff mounts. I will not be racing the car, but bought the XA Extreme Street II+ based on value back in Dec. I know this is subjective, but for mainly street driving, should I consider the radius rod inserts over the EP6577 bushes?

Is NVH dramatically increased between the inserts vs the bushings? I already have 20x10 and 20x11.5 wheels and a semi-loud 3" cat-back. Do you think the bushings will transmit a lot more noticable noise/vibration to the front suspension/steering over the inserts? If so, I don't mind downgrading to the inserts since I don't plan to take the car on a road course. I merely wanted the coil-overs for drop and swaybar to help with body roll.

What's the difference between EP6579 & EP6578?

Thx.
NVH or other noises have not been a issue at all with the front radius rod bushings or inserts. You already have the front bushing, so I would use it. It is a first class bushing for sure

Both the EP6578 and EP6579 are front radius rod bushing inserts. the EP6579 is a lot more aggressive.

If you need advise on the swapping of the front radius rod bushing, contact me and I can discuss your concerns.

thanks
mike
dms
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Old 04-27-2010, 05:04 AM   #18
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i like the new sig pic!
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Old 04-27-2010, 07:34 AM   #19
dmiller66
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When I read the title...I thought you were talking about women!
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Old 04-27-2010, 09:40 AM   #20
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Originally Posted by jrhaus76 View Post
changing pads is a PITA for the average Joe...
What makes you think the "weekend autocrosser" is an average Joe?

If a 15 minute job for an afternoon of racing is all it takes to maintain streetablility, I think that's a pretty damn good compromise.

DMS provided a solution and a reasonable one at that. Be happy knowledgable people are willing to help...
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Old 04-27-2010, 11:05 AM   #21
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Weekend racing is a little understood activity to those who have not done been involved. That is one reason why we struggle to get more people out to autocross and road course events. At higher level weekend warrior racing using a daily driver on the track there are hours of pre and post track work to be done. What is routine, what is fun to a veteran autocross or road course veteran is a whole lot of work to an outsider. Swapping pads out is pretty minimal. Once people get a couple of events under thier belts, they get in the swing of things.
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Old 04-27-2010, 11:38 AM   #22
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As far as tire pressure is concerned you can run nitrogen in them and they willnot change, alot of nascar teams do this plus heavily used in the aviation field for thermal expansion. An there is some oil changing places that service.
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Old 04-27-2010, 01:40 PM   #23
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Originally Posted by olblue75 View Post
As far as tire pressure is concerned you can run nitrogen in them and they willnot change, alot of nascar teams do this plus heavily used in the aviation field for thermal expansion. An there is some oil changing places that service.
You are right, but changing tire pressures at the track generally means using compressed air. You can be more prepared and come with a supply of nitrogen and then you have the best of both.
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Old 04-27-2010, 10:38 PM   #24
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Since we are discussing tire pressure, how much should I bump them up on the track. 45lbs cold?
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Old 04-28-2010, 07:21 AM   #25
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Since we are discussing tire pressure, how much should I bump them up on the track. 45lbs cold?
For a road course we start street tires cold at 33 - 35 pounds. For autocross you will get a wide range of suggestions. Starting at 38 and feeling your way through the range for your car setup would be a reasonable starting point.
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