im running a coupe on sohc turbo putting down around 190.im running the bf drags on stock axels. what rpm should i be launching at and how long should i hold first ? heres my setup. d16y8,15g,310cc injectors, greddy fmu, 3 inch from turbo to a super medalion and a 24x10x3 front mount. thanks if u can help

 

most importantly is preloading...then work on what rpm to release...
as far as how long to stay in first..I usually stay in 1st until im at the 60marker
then shift

 

preloading was and still is a pain for me to learn. I have yet to perfect it, and i don't know if i ever will. That is deffinitely what you should try to learn first though. Takes a whole lot of stress off your drivetrain. Then just like 12SEC CIV said.

 

what is preloading?im not an idiot just knew to the scene

 

releasing the clutch to its highest point without the car moving and launching from that point

 

When we speak of preloading the clutch and tranny we are talking about having the E brake pulled with the clutch a close to being fully out as possible with out the car actually rolling through the lights. This way some of the stress is already on the drivetrain so that it is not an instant shock to it.

 

should i be worried about breaking axels at 200 whp

 

I wouldn't but anything is possible.

 

if you dont launch high enough and just dump it...im sure its bound to happen

 

what size drag radials and which rims?

sohc turbo

 

i think there like 205 45 15 im not sure ill check in the morning

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Fitti &raquo;</TD></TR><TR><TD CLASS="quote">When we speak of preloading the clutch and tranny we are talking about having the E brake pulled with the clutch a close to being fully out as possible with out the car actually rolling through the lights. This way some of the stress is already on the drivetrain so that it is not an instant shock to it. </TD></TR></TABLE>

thats how we do it!

 

I do not use my E brake to preload my tranny and I seem to have it down pact perfect every Launch is the same and 60s are pretty good for the tracks ive been to. Local Diego guys if you need helping set that up hit me up ill show you how its done either in your car or mine.

 

ive always thought its better to start launching high then work my way down from there to find the right spot. My theory is its better to spin a little bit at first then to just HOOK off the line. which = less drivetrain stress off the launch. this is just what ive been able to come up with after making 5 bfg dr passes, one 24.5x8.5x13 slick launch and 2500 miles beating around the streets with 440whp and autozone axles. havent had any problems yet... also helps to have LSD, traction bars, and good mounts....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dunkd &raquo;</TD></TR><TR><TD CLASS="quote">ive always thought its better to start launching high then work my way down from there to find the right spot. My theory is its better to spin a little bit at first then to just HOOK off the line. which = less drivetrain stress off the launch. this is just what ive been able to come up with after making 5 bfg dr passes, one 24.5x8.5x13 slick launch and 2500 miles beating around the streets with 440whp and autozone axles. havent had any problems yet... also helps to have LSD, traction bars, and good mounts....</TD></TR></TABLE>
In my experiences with the race cars weve built, The safest bet is a lower launching point if your trying to preserve your transmission and axles. Personally ive always had more success with a slightly higher launch, spinning a little and knowing when to let off. Some of the full Race cars ive driven just hook up very well so the launch rpm isnt so critical, just the style in which the car is launched. Oem Honda axles are fairly strong, its the aftermarket replacements that break easily. Another reason the axles tend to brake is because of heat, carbon steel is very brittle when hot. So the hotter they get, they weaker they become. I wouldnt be worried about busting the d's on 200 if you take it easy on the launch, chances are your shifting is going to be your key to a good time. Dont worry about losing the tranny / axles for that tenth of a second

 

preloading is the way to go. Make sure you dont give it to much gas though. give it a couple trys and you will get ahold of it.

 

just pulled a 1.73 60' on autozone axles - everything's still holding up good.

 

never tried preloading with the e brake up...wouldnt it lower your 60s a tad bit since u gotta drop the brake?...which way is better or what is the benefit of each, preloading with ebrake up or no brake? imma newbie to the drag racing driving styles

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cmGSR916 &raquo;</TD></TR><TR><TD CLASS="quote">never tried preloading with the e brake up...wouldnt it lower your 60s a tad bit since u gotta drop the brake?...which way is better or what is the benefit of each, preloading with ebrake up or no brake? imma newbie to the drag racing driving styles </TD></TR></TABLE>

preloading just puts less strain on your drivetrain.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cmGSR916 &raquo;</TD></TR><TR><TD CLASS="quote">never tried preloading with the e brake up...wouldnt it lower your 60s a tad bit since u gotta drop the brake?...which way is better or what is the benefit of each, preloading with ebrake up or no brake? imma newbie to the drag racing driving styles </TD></TR></TABLE>

i usually do it without the ebrake .... i guess 1 less thing to worry about for me

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93H22ACX &raquo;</TD></TR><TR><TD CLASS="quote">

i usually do it without the ebrake .... i guess 1 less thing to worry about for me </TD></TR></TABLE>

Yeah I used to do it with out the E Brake but after I did it a couple of times using it it just seemed natural and work great. I felt like I could have the clutch out a little bit farther and gas pressed a little more.

But looking at you signature it seems as if your way is working really well for you though

 

We usually preload the suspension/drivetrain. On our the old setup we had replacement axles and 24.5 M/T's. The car ran consistantly @11.5's for about 6 months with no problems. Preloading is the most important thing you can do when leaving the line. J

 

Good input here....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cmGSR916 &raquo;</TD></TR><TR><TD CLASS="quote">never tried preloading with the e brake up...wouldnt it lower your 60s a tad bit since u gotta drop the brake?...which way is better or what is the benefit of each, preloading with ebrake up or no brake? imma newbie to the drag racing driving styles </TD></TR></TABLE>

I have pulled 1.6 60' with the E brake preload and not a problem with the drive train. Fastest so far is 11.5 on 13lbs. I will crank the boost up and let you know maybe at battle

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dunkd &raquo;</TD></TR><TR><TD CLASS="quote">ive always thought its better to start launching high then work my way down from there to find the right spot. My theory is its better to spin a little bit at first then to just HOOK off the line. which = less drivetrain stress off the launch. </TD></TR></TABLE>

That's exactly the way I do it Couple hundered passes in almost 3 years on the same set of cheapo axles getting 1.6 60ft times on slicks so it must work