What's the best launch technique for 40 series DRs w/AODE

moponys · 03-02-2004, 10:06 PM

I have BFG 245/40-18 DRs on my 94 convertible w/aode...

I'll be going to the track with them for the first time this weekend. Should I lower them down to about 18psi and heat em up really good for the best launch?

I was trying to launch with them on the street to see if they would hook without dropping the pressure or heating them up and they were getting roasted pretty bad.

I want to make sure I get the best possible 60' times this time around.

Thanks...

tireburner163 · 03-03-2004, 08:25 AM

Drop them to 25psi, heat them up good, bring your car up against the stall, then drop the hammer when the light turns green.

moponys · 03-03-2004, 12:30 PM

With 18" tires is it better to not lower the psi as much as you would with 15 or 16" tires?

tireburner163 · 03-04-2004, 12:15 AM

If you start dropping the pressure too low the tire starts bowing up (rideing on the outer edges) and you won't lay down a good contact patch.

-Josh, aka the tireburner

moponys · 03-04-2004, 12:04 PM

Cool...

25psi it is then.

Thanks -Tony

Dark_5.0 · 03-05-2004, 04:32 PM

You will never hook up for S H I T with an 18 inch tire. The tire has very little side wall and is stiff as hell. If you are truely worried about a good 60ft get yourself 2 spare 15 or 16 inch rims and buy some slicks for the track.

moponys · 03-07-2004, 01:49 AM

The 18" DRs hooked ok today of at least better than I thought...

I got in 5 runs. Three 2.0 60 foot times and two at 1.9.

My best run went like this:

reaction: .154
60 Foot: 1.98
1/4: 13.66
MPH: 101

I'm hoping to be in the low 13s after I do a cam and intake swap.

tireburner163 · 03-07-2004, 10:59 AM

I would think your car would be a ton faster.

moponys · 03-07-2004, 01:16 PM

You're not the only one...

My cam is way to small. I have a xe274hr that's waiting to go in but I have to get a Trick Flow Track Heat first. The car stops pulling after 5500rpms the way it is now.

This is actually 7/10s faster then my previous best....

I've actually had lots of problems with my car but will hopefully in the low to mid 12s soon.

03-02-2004, 10:06 PM	#1
moponys Registered Member Join Date: May 2001 Location: Antioch, CA 94521 Posts: 181	What's the best launch technique for 40 series DRs w/AODE I have BFG 245/40-18 DRs on my 94 convertible w/aode... I'll be going to the track with them for the first time this weekend. Should I lower them down to about 18psi and heat em up really good for the best launch? I was trying to launch with them on the street to see if they would hook without dropping the pressure or heating them up and they were getting roasted pretty bad. I want to make sure I get the best possible 60' times this time around. Thanks... __________________ N/A 94 GT vert w/aode...12.19 @110 w1.67 60' Some bolt ons

03-03-2004, 08:25 AM	#2
tireburner163 It's a lot like a race car Join Date: Aug 2000 Location: Meridian, MS Posts: 4,130	Drop them to 25psi, heat them up good, bring your car up against the stall, then drop the hammer when the light turns green. __________________ 1987 Buick T-type 1998 HD Electra Elide

03-03-2004, 12:30 PM	#3
moponys Registered Member Join Date: May 2001 Location: Antioch, CA 94521 Posts: 181	With 18" tires is it better to not lower the psi as much as you would with 15 or 16" tires? __________________ N/A 94 GT vert w/aode...12.19 @110 w1.67 60' Some bolt ons

03-04-2004, 12:15 AM	#4
tireburner163 It's a lot like a race car Join Date: Aug 2000 Location: Meridian, MS Posts: 4,130	If you start dropping the pressure too low the tire starts bowing up (rideing on the outer edges) and you won't lay down a good contact patch. -Josh, aka the tireburner __________________ 1987 Buick T-type 1998 HD Electra Elide

03-04-2004, 12:04 PM	#5
moponys Registered Member Join Date: May 2001 Location: Antioch, CA 94521 Posts: 181	Cool... 25psi it is then. Thanks -Tony __________________ N/A 94 GT vert w/aode...12.19 @110 w1.67 60' Some bolt ons

03-05-2004, 04:32 PM	#6
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	You will never hook up for S H I T with an 18 inch tire. The tire has very little side wall and is stiff as hell. If you are truely worried about a good 60ft get yourself 2 spare 15 or 16 inch rims and buy some slicks for the track. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

03-07-2004, 01:49 AM	#7
moponys Registered Member Join Date: May 2001 Location: Antioch, CA 94521 Posts: 181	The 18" DRs hooked ok today of at least better than I thought... I got in 5 runs. Three 2.0 60 foot times and two at 1.9. My best run went like this: reaction: .154 60 Foot: 1.98 1/4: 13.66 MPH: 101 I'm hoping to be in the low 13s after I do a cam and intake swap. __________________ N/A 94 GT vert w/aode...12.19 @110 w1.67 60' Some bolt ons

03-07-2004, 10:59 AM	#8
tireburner163 It's a lot like a race car Join Date: Aug 2000 Location: Meridian, MS Posts: 4,130	I would think your car would be a ton faster. __________________ 1987 Buick T-type 1998 HD Electra Elide

03-07-2004, 01:16 PM	#9
moponys Registered Member Join Date: May 2001 Location: Antioch, CA 94521 Posts: 181	You're not the only one... My cam is way to small. I have a xe274hr that's waiting to go in but I have to get a Trick Flow Track Heat first. The car stops pulling after 5500rpms the way it is now. This is actually 7/10s faster then my previous best.... I've actually had lots of problems with my car but will hopefully in the low to mid 12s soon. __________________ N/A 94 GT vert w/aode...12.19 @110 w1.67 60' Some bolt ons

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