i keep getting told my 60 foots are horrible. i switched to a bigger tire (24.5" m&h) and my 60's went down. was pulling 1.84-1.88 on the 23" tire. question is are these respectable for what the car/setup is? was thinking wheelie bar setup is next, but wondering if there is something else i could do. nobody makes a bolt on suspension setup for drag for the 1g crx, so the easy button is out.

car - 85 crx, b16 turbo, 310 hp 220tq, homemade traction bars, tokicko adj. struts, 375 lb torsion bars, 450 lb rear springs ground control coilovers, solid spool in trans, and dss 2.9 axles. weight is 2010 lbs w/ driver, approx. 65/35 weight distribution. wheelbase is 86" (scary i know hahaha). tire pressure was 8 psi cold. launch rpm was 6600. i preload with my cnc stage brake.

60' - all in one night
1.789
1.796
1.788
1.775
1.763
1.794
1.780

best run was the 1.763 60 and 11.44 et @ 124 mph w/ .034 light. any help/insight would be great. thanks

 

2 Step? Is it bogging? 60's seem alright to me...Totally unrelated but do you have any pics of your car cause thats pretty awesome dragging a 1st gen Crx.

 

yes, 2-step, not bogging at all. she wants to go, but traction says NO! hahaha pics here: http://s302.photobucket.com/albums/n...and2/?newest=1 and thanks for the compliment.

 

i went 10.4 @ 147 with a 1.7 short. new slicks and im back in the 1.6's still figuring out my ign box.

they arent bad.

 

Stiffer rear suspension, or softer, and wheelie bars.

My old EF hatch cut 1.65-1.69's all day 1000lbs in the rear. MY DD, 350/250 sohc powa @ 2600lbs 450's rear cut 1.70-1.75 all day.

It could also just be bad track prep?

 

Yea stiffen up the rears theres no reason you shouldnt be getting 1.6s every pass. I would say maybe bump up the rpm a touch i use mine at 72 and up depending on how things are feeling and between 6-10 psi on tires depending on track.

 

ok so i have been tryin to get into suspension as well and i was reading "Honda Builders Handbook II" by joe pettitt, and in the suspension section he says " Following the logic of this equation (there math involved lol) it seems obvious that raising the rear of the car and making it stiffer offers little if any improvement. In fact if it does improve acceleration at the start, its probably barley measurable and because raising the rear causes aero drag, the technique seems a net looser" it also mentions you change the position of the cg, its in poor geometry and roll steere can be severe ... im not here claiming i know anything, i just want to put this out and see what yall think

 

making the rear stiffer and raising it up are 2 different things. put a heavy spring in the back, moderate spring in the front, you want the front shocks to rebound hard (makes them harder to extend) and compress easy,(gets them back down faster) and the rear you want them to rebound easy (keeping the weight on the front) and compress hard. (not lowering down)

 

IIRC isnt joe pettitt a road racer? i always see him on the silver state classic videos. top end runs.

 

thanks everyone for the input. i'll try some stiffer springs and higher launch rpm. track prep could be part of my problem. i've only raced one track and it isn't the best from what i here. Renegade Raceway in Parker, WA. i think it's time to call Koni as well to see about some double adjustable struts.

 

nice car/set up. do you try 6psi in the tires?

 

Bring your 2 step down a bit, try launching at 6300 with 6psi in the tires, you should be able to pull 1.65 60 ft

 

it feels squishy at 8 psi. i'll try it, but i don't like hitting the brakes at 8 psi let alone 6. i'll hit the next test n tune and try a bunch of launch rpms from 5500 - 7500, then if time allows mess with tire pressure.

thanks everyone for the advice

 

Could be track prep. I cut low 1.8's at one local track and 1.6's at another. Same set-up.

 

At your weight and tire size/hp level, you should be able to go 1.6's all day. Like everyone has stated, try stiffer rear springs, and small increments of adjustment in the front tire pressures and you launch rpm's. Also have the rear tires inflated to near the maximum suggested pressure to decrease tire deflection on launch

 

rota92 was down to 4.5psi in the slicks with a wheelie bar.

Also if your serious about suspension, call Joey at Progress and tell him what you want to do. There's more to it then just throwing stiff springs on the rear.

boostedcivicsir touched on it, it's about the shock rebound. Watch vid' of the faster SFWD cars, notice how the car doesn't move on the shift to 2nd gear.


The Progress Group, Inc. Online Store Tell him your from H-T he told me last week they were going to become sponsors here.

Joey Berry
1.800.905.6687
www.progressauto.com

 

i called Progress, said there's nothing they could offer me for my car. about my only option is to get with Koni, but i have a feeling i would need to know what i want. i understand the double valving, but how much is the question.

 

That's the info Ed at Progress taught my son rota92. You can try and PM him, Ryan may be able to give you some insight. He's going through Finals right now so, it may take a couple of day's.

You may want to PM "miller" or Tony1 too. Tell them I or Ryan sent you.

 

great, thank you for the direction. i'll keep working on it.

 

To be honest with you it doesnt take a big dollar set up to make a car hook, well for me at least. Im just running kyb agx shocks ebay front springs 400-450lbs and skunk 2 1000lbs rear springs.

Ive noticed with my car if i sit on the 2 step it will blow the tires off last time i was at the track i would just bring the rpms up to touch the 2 step on the green so no boost was being built.

For the most part it will take some playing around to find what your car actually likes.