Help me win at autocross, I wanna be a top 10 car and driver! |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Help me win at autocross, I wanna be a top 10 car and driver! |
crash914 |
Jul 1 2014, 06:49 PM
Post
#21
|
its a mystery to me Group: Members Posts: 1,826 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 21 2014, 05:17 PM
Post
#22
|
its a mystery to me Group: Members Posts: 1,826 Joined: 17-March 03 From: Marriottsville, MD Member No.: 434 Region Association: MidAtlantic Region |
Thanks Mike,
I think you are right. Looking at my g data, I am pulling much more in turns then on decell. I am still used to the street tires that lock up too easy. I never locked up the fronts and I think I can still keep more speed through the corners. Throttle, I am just about maxed out. I did go to 3rd again as I was on the rev limiter halfway through the straight. It seems to help me to brake and downshift. I just seem to be able to put it together better. I do have coil overs in the rear. you think I should go lower? I can also stiffen up the front bar. I am about 3/4 soft now. Thanks agin.. |
Lo-Fi Version | Time is now: 1st June 2024 - 07:04 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |