Hacked up my fenders to fit the 275’s.
#1
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Hacked up my fenders to fit the 275’s.
Well I finally bit the bullet and hacked up my fenders to fit the 275’s.
I took the springs off and did a whole bunch of articulation studies on my car getting the clearance envelope right. Found with the 949 wheels the minimum spacer that would work was 15mm, any less and the rear hits the tire sidewall on the inside at full bump and the front has serious interference with the top of the shock attachment area. 15mm works ok in the front but still sacrifices a bit of bump travel. 20mm spacer in the front would get a tad more bump travel before the tire rubs the fender by the shock top. My big hollow RB swaybar would rub at full lock but my ISC bar has a plenty of clearance. If you space out the front much more than with a 20mm spacer then you start having serious issues with clearance to the seam weld at the back of the wheel well when turning. You wouldn’t be able to turn with 0 offset wheels the tire would hit the front and back of the wheel opening. Ideal wheel offset would be in the ET 15-20mm range for the 225/45/15 tires.
Another thing I noticed is when I put my 225/50/15 V710’s on they hit the top of my fender wells centered over the tire when it is sitting on the bumpstops. Confirms my polish marks left there. Any bigger diameter would mean limiting some more bump travel or tubbing the fenders.
The Autokonexion version 2 flares barely fit the tires which was what I was looking for since these will likely only be used for autocross. I didn’t want unnecessarily wide flares for my track tires or street tires.
Bob
I took the springs off and did a whole bunch of articulation studies on my car getting the clearance envelope right. Found with the 949 wheels the minimum spacer that would work was 15mm, any less and the rear hits the tire sidewall on the inside at full bump and the front has serious interference with the top of the shock attachment area. 15mm works ok in the front but still sacrifices a bit of bump travel. 20mm spacer in the front would get a tad more bump travel before the tire rubs the fender by the shock top. My big hollow RB swaybar would rub at full lock but my ISC bar has a plenty of clearance. If you space out the front much more than with a 20mm spacer then you start having serious issues with clearance to the seam weld at the back of the wheel well when turning. You wouldn’t be able to turn with 0 offset wheels the tire would hit the front and back of the wheel opening. Ideal wheel offset would be in the ET 15-20mm range for the 225/45/15 tires.
Another thing I noticed is when I put my 225/50/15 V710’s on they hit the top of my fender wells centered over the tire when it is sitting on the bumpstops. Confirms my polish marks left there. Any bigger diameter would mean limiting some more bump travel or tubbing the fenders.
The Autokonexion version 2 flares barely fit the tires which was what I was looking for since these will likely only be used for autocross. I didn’t want unnecessarily wide flares for my track tires or street tires.
Bob
#3
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I like your car. Thats what I think it should look like. Beeing a sports car and all. How do you like the wing? Did you mount it without the 6in extentions? If so how was it?
Have a great day,
Jared
Have a great day,
Jared
#4
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I wanted the wing up where it would be the most functional. Well above any turbulent separation flow coming off the back window. Anything low looks like Ricer garbage to me and likely doesn’t work well. I haven’t track tested with the wing yet but I can tell from driving some 90 mph speeping 90 degree turns near my way to work the difference the wing and the front splitter make is huge. Likely to cut some lap time off I think. The wing is a universal fit one and I mounted it to custom brackets I made that mount it to the fender in the gap between the fender and the trunk. So it is nice and solidly mounted rather than on rubbery trunk lid. I have two 2.5” risers on each side. So it is 5” lift. Also with my mounting it comes off easily and leves no visible holes in the trunk.
I took it for a short drive today on the 275’s. Dam state cop stopped me for no front plate. I haven’t mounted it yet since the lip spoiler and splitter mess with how it was mounted. He asked “Are those some kind of drifting tires?” didn’t give me a ticket.
Bob
#5
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Got lucky on that one. Did you do a write up on th etrunk mounting? I would like to put a wing on one day and was thinking about getting an extra lid so that I could swap them out befor and after a track day.
Have a great day,
Jared
Have a great day,
Jared
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Next step is spats for the front wheels and canards. I’m trying to figure out the details of how to attach canards if I do the DIY route. The spats seem pretty straight forward they but I don’t get how to attach the canards to the bumper.
Bob
Bob
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Bob
Last edited by bbundy; 01-04-2010 at 06:18 PM.
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Bob
#16
The GTX doesn't have a front plate on it ether one of two of them that I have that don’t have front plates installed. The Reservation cop that stopped me used that as a reason for stopping me but I think the real reason I think is he saw me come around a sharp U corner at around 3 times the speed that most people take it even though I was not technically speeding nor could he tell how fast I was going. That GTX is fast and corners well. I won the SCCA Street Mod division for the region driving it last year.
Bob
Bob
I'm obviously looking for some hope that I wont have to compete against you next season
#17
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The Western Washington series has a class called Open Street, Just got to be pretty much street legal, I like this
Bob
#19
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Yea Babbs, I think that might hav more national championships than any single car in history. The funny thing is it dosn’t seem to be getting faster and others are. I beat the Babb’s once last year with the Miata but still was beat by Kieth Brown in his DP miata.. Not only is the DP Miata a dam fast car but Kieth generally has the fast PAX time as well, probably the fastest DP in the country only had bad luck with rain at the national finals. Ron Bauer wasn’t running his CSP Miata so he was usually in a slower car. My PAX times for SSM rarely make it into the top 20. I need a way faster car and drive really good to beat these guys. Lots of fast people in the region and really my car is still set up more as a track car than an autocross car I autocross simply because I think it improves my driving and I like competition the track is what I really enjoy. The tires, springs, and aero changes I think will help make it more competative this coming year.
Bob
Bob
Last edited by bbundy; 01-05-2010 at 01:45 AM.