Help me win at autocross, I wanna be a top 10 car and driver! |
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Help me win at autocross, I wanna be a top 10 car and driver! |
crash914 |
Jul 1 2014, 06:49 PM
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#1
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its a mystery to me Group: Members Posts: 1,827 Joined: 17-March 03 From: Marriottsville, MD Member No.: 434 Region Association: MidAtlantic Region |
ok, I need help. currently I am about 3 to 5 seconds off the pace in my local club events. I know most of the time is due to the driver. I think that there is some time in the car also as it is mostly set up for the long track.
Here is what I know so far, if more info is needed..ask... 73 914, blue. bolt in cage, just the 4 plates plus the seat belt for tie in points. stiffly sprung, Koni yellows, I think 250 lbs in the rear and 21 or 23mm torsion bars in the front. Delrin bushings everywhere, I have needle bearings, just not installed. lowered, see pictures for height. 4 inches in the rear to the bottom of the engine mount bar, 4 inches in front to the bottom of the front floor pan. 205 50 15 tires, not sure of the wheel width, 4 lug. my tires are about 8 year old khumo v710's that have been in the garage and have 4 autocross days on them now. air pressure I have been running, 22lbs front, 20 rear. see pictures for chalk. looks like I am using all the tread. Camber is close to -2.4 degrees front and rear. Front toe is 0, not sure about the rear, perhaps 1/4 inch toe in. Motor is 103 by 80, nickies, split cam, le200 heads, tangerine header, 6800 rpm redline, 11:1 compression, so plenty of grunt. Megasquirt with twin throttle bodies. Transmission is open diff, with a flipped 5th gear for 3rd and standard 5th. no camber plates, See pictures in the following posts.. |
crash914 |
Jul 2 2014, 06:35 PM
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#2
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its a mystery to me Group: Members Posts: 1,827 Joined: 17-March 03 From: Marriottsville, MD Member No.: 434 Region Association: MidAtlantic Region |
Thanks Josh...good info..
I do now have flairs on the car...tire width is no problem. I am running keiser wheels but need to get the back space measurement. Front sway bar is 22 mm. Stock rear sway bar. I put the coil overs on the rear, but just don't remember the spring rate. Did I mention I had the car off the road for 8 years? I did not do the cage, T-bars or bushings...done by previous owner so I need to dig deeper. oh yea, I am having fun...competing with myself. I am finding the gopro the best tool to see actually what I am doing when. Lots more to learn for sure...you all are great coaches.... |
jhadler |
Jul 3 2014, 10:03 AM
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#3
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Long term tinkerer... Group: Members Posts: 1,879 Joined: 7-April 03 From: Lyons, CO Member No.: 529 |
Thanks Josh...good info.. I do now have flairs on the car... Are they sparkly?? Sorry, just a bit of end-of-the-week humor. I find myself sometimes a stickler for spelling. Flares are for race cars, flairs are for TGI Friday employees... (IMG:style_emoticons/default/biggrin.gif) QUOTE I am running keiser wheels but need to get the back space measurement. 4-7/8" or 5" backspace is the maximum the tub can take without excessive rubbing, and even then it might be too much. What width wheel? Do try to find a VERY GOOD tire tech for mounting race tires on those wheels. Keizer's are stupid light, but they're also quite fragile. A gorilla of a tire tech can EASILY destroy one of those wheels with too much grunt in the wrong place... QUOTE Front sway bar is 22 mm. Stock rear sway bar. I put the coil overs on the rear, but just don't remember the spring rate. Did I mention I had the car off the road for 8 years? I did not do the cage, T-bars or bushings...done by previous owner so I need to dig deeper. Aha! Loose the rear bar right away. Unless you've got a limited slip, you're going to find that the best set up will have a strong front bar, stiff spring rates front and rear, and no rear bar. The rear bar is only going to get you wheel spin right now, and with the spring rates you're running, it's not doing you much good anyway. QUOTE oh yea, I am having fun...competing with myself. I am finding the gopro the best tool to see actually what I am doing when. Lots more to learn for sure...you all are great coaches.... Have fun! -Josh |
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