i have searched i have seen the thread before but i cant find it but um...

heat cycleing how does that work....


i went to the track tonight and i got hte bfgs 205 50 15s on my slips i was launch at 2500/3500 i was boggin and wheel hopin both times... the 3drd time i launched atoun 5000 andi spun my best 60 was 2.1.... the psi was 12-13

i dunno wat im doin wrong car hit 13.8 on falken ze....14.1 all night on the bfgs ....

 

Raise the psi in the tires. Don't start at 12-13psi, thats your wheel hop there. Start and 20 and work your way slowly down. They have to spin so launch a little higher.

 

launch higher. thats the prob.i would put less pressure in them. but thats me.

 

12-13 is way to low..... 17psi I have found is the best...... I launch around 4000rpm hook 2.0 1.9's all day. Rob

 

hmmmm i ran 10psi before burnout and i have done quite well with them.
Its all in driver stlye.
Lower PSI will allow you to launch higher

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr206 &raquo;</TD></TR><TR><TD CLASS="quote">launch higher. thats the prob.i would put less pressure in them. but thats me. </TD></TR></TABLE>

I agree on launching higher, but from what I've seen BFGs like pressures between 18-22 depending on the car. Because its a dot radial the sidewall is going to be fairly stiff, and thus needs more pressure to keep the weight of the car on the contact patch. you lower the pressure too much, and the weight is resting on the sidewalls.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bryson &raquo;</TD></TR><TR><TD CLASS="quote">

I agree on launching higher, but from what I've seen BFGs like pressures between 18-22 depending on the car. Because its a dot radial the sidewall is going to be fairly stiff, and thus needs more pressure to keep the weight of the car on the contact patch. you lower the pressure too much, and the weight is resting on the sidewalls. </TD></TR></TABLE>

As posted in the other thread...I run the BFG's at 10.5lbs with the car launching at 6500rpm and cut consistant 1.8 60ft's.....as far as heat cycling goes...I know that there are two Discount Tires here in the DFW that have a heat cycling machine where they will heat cycle the tires for you. Cost's $10 a tire. Or you can just drive on them for like 30-hour. Let them cool down. Then drive on them again. That's what I did with my 205's and they lasted for quite a while.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bulldogg83 &raquo;</TD></TR><TR><TD CLASS="quote">

As posted in the other thread...I run the BFG's at 10.5lbs with the car launching at 6500rpm and cut consistant 1.8 60ft's.....as far as heat cycling goes...I know that there are two Discount Tires here in the DFW that have a heat cycling machine where they will heat cycle the tires for you. Cost's $10 a tire. Or you can just drive on them for like 30-hour. Let them cool down. Then drive on them again. That's what I did with my 205's and they lasted for quite a while. </TD></TR></TABLE>

Ahh, I guess it really doesn't matter then...haha.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bryson &raquo;</TD></TR><TR><TD CLASS="quote">

Ahh, I guess it really doesn't matter then...haha. </TD></TR></TABLE>

When I had the tires at 12lbs I got 2.0 60ft's because I would spin.....just have to take your time and find their sweet spot on your car.

 

In my 97 ek hatch with a h22 I/H/E on 10-15 psi with just spinning the tires enough to clear them off launching at 3000 rpm dumping the clutch pulling 2.0 60's. I think you just need to practice on the BF's a little to see whats best for your car.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bulldogg83 &raquo;</TD></TR><TR><TD CLASS="quote">As posted in the other thread...I run the BFG's at 10.5lbs with the car launching at 6500rpm and cut consistant 1.8 60ft's.....</TD></TR></TABLE>

****** a that's my new goal. I thought 2.0 was pretty good! 6500 seems like a lot of rpm, I have been using around 4000. What clutch are you running and are you slipping it alot as you launch? Also how much power are you making?

Actually if you don't mind going into a little more detail about your launch technique I would definitely be interested in hearing it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slowegxxrevolt &raquo;</TD></TR><TR><TD CLASS="quote">

****** a that's my new goal. I thought 2.0 was pretty good! 6500 seems like a lot of rpm, I have been using around 4000. What clutch are you running and are you slipping it alot as you launch? Also how much power are you making?

Actually if you don't mind going into a little more detail about your launch technique I would definitely be interested in hearing it.</TD></TR></TABLE>

The car is a 00 Si weighting 2630 with me in it and 1/2 tank of gas. The car is making 396whp/268trq on a 84.5mm b16 with gt35e. Car has a JDM GSR Tranny with Clutchmasters Stage 5 with 4 puck disc.

For the Burnouts I pull the E-Brake straight up, rev the car to 6500rpm, drop the clutch in second gear, let em rip, and then pull to the line.....at the line I just put the pedal to the floor, let the two step do it's thing at 6500rpm and drop the clutch when the final amber comes on. No slipping of the clutch at all, just drop it with the gas pedal to the floor. I run about 10.5lbs of pressure in the drag radials, and it seems to hook pretty good.

 

Excellent feed back thanks...

yea i mean i pulled a 2.1 13.8 pass on falken ZE's lol

but yea i need to practice on these tires i guess as far as heat cycling i messed up already... lol i did 2 burn outs before i drove down to the track... drove for liek 45 mins till i got to the track... nd then had 3passes i pulled 2.1 best 60 foot so...hopefully by like sunday my tires will be good for the event kus im hopin to hit 13.5

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bulldogg83 &raquo;</TD></TR><TR><TD CLASS="quote">The car is a 00 Si weighting 2630 with me in it and 1/2 tank of gas. The car is making 396whp/268trq on a 84.5mm b16 with gt35e. Car has a JDM GSR Tranny with Clutchmasters Stage 5 with 4 puck disc.

For the Burnouts I pull the E-Brake straight up, rev the car to 6500rpm, drop the clutch in second gear, let em rip, and then pull to the line.....at the line I just put the pedal to the floor, let the two step do it's thing at 6500rpm and drop the clutch when the final amber comes on. No slipping of the clutch at all, just drop it with the gas pedal to the floor. I run about 10.5lbs of pressure in the drag radials, and it seems to hook pretty good. </TD></TR></TABLE>

cool thanks for the feedback. I'm definitely gonna try launching higher. Maybe I should get a twostep so I can launch WOT...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slowegxxrevolt &raquo;</TD></TR><TR><TD CLASS="quote">

cool thanks for the feedback. I'm definitely gonna try launching higher. Maybe I should get a twostep so I can launch WOT...</TD></TR></TABLE>

Two-step definatly helps out.

 

those are some nice 60' times bulldogg83, just curious what suspension do you have? are you using any traction bars?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 18G_prelude &raquo;</TD></TR><TR><TD CLASS="quote">those are some nice 60' times bulldogg83, just curious what suspension do you have? are you using any traction bars?</TD></TR></TABLE>

No traction bars, and running Tein SS Coilovers. I run the coilovers at full stiff when I'm at the track.

 

I am grabbing a set of BFG Gford radials next month, but I am gonna drive on them 24/7, not just at the track. I only put an average of 2k on my car a year anyways.