I remember, but if memory serves me right ( I am getting old) , you had a 1.7 something 60 ft. and were happy.

VINNIE

 

I did a 1.77 60' on Nitto DRs, the track was preped good and they where new. Now after swaped from a 6# to a 8# lower it wont hook at all. I made my own trac-bars and they seem to work fine.

 

I feel bad for you tallimeca
You have all the mods for a 1.6/1.7 launch, but for some reason
it just aint happening ??? I would think gears too, since everything else is the standard mods we all have, but Chucks saying it didn't make a big diff for him, you def need to see a video, bummer ???

I feel blessed, I got an old pair of beat up 28x10 Hoosiers, with massive road slices on them, squished on a 16x8 rim,
and I still get extremly consistant good 60's (with or without Juice)
And I do very small low rpm burnouts, 1.6 pretty much every time with juice, (my worse is a 1.7 w/nos) and I pull a 1.7 60ft everytime without the juice running your ET's of 12.7 - 12.8.
Schitt I even ran an entire season on F-1's and pulled a best of 1.8 on F-1's, with 98% 1.9's, and (1) 2.0 (worse ever 60)

Could the width of those 10.5's be working against you ?
Is that what you've always used ?
What size Rim ?
What launching technique are you using ?
You got to know if it's spinning at launch, is it ?
and what pressure have you tried ?

Pressure makes a huge diff, I tried the most ever at Cecil last month (@22) and had the worse ever Hoosier 60ft of 1.78, then I went back to 18psi and immediatly ran my best 60yet of 1.63.
(I also have stock tranny, convertor, + suspension, w/JDM bars)
On my 11.81 run I was running very low psi, @ 16 or less
(we all saw me wobbly chicken the entire track, too little air)
Diff size slicks, on diff size rims, "on diff L's" may take a little adjusting up and down, until you find your best spot....

Bummer...........

 

Don....if you want to go up wednesday or friday, I would be happy to take a run in your truck, since our trucks are running pretty much heads up. I can also bring the video camera up to see if we can pick something up that its doing. Gimmie a shout if you want.

 

Friday is a date as long as weather holds out.

No , that was Mike (Eluzion). He did that on my tires. It was about 32 degrees out when he did it though.

Honestly I don't know if it it spinning on the track or not. I KNEW when my F1's were spinning but with these it's hard to tell.

As far as pressures, i've gotten my best 60's on them setting them at @ 17-18 cold. Anything higher than 19 or 20 I KNEW they were spinning badly.

I've tried launching right from idle and rolling into it......mid 1.9's. I've tried bringing it up to around 800, 1000, 1200 and walking it out......1.9x's. I've tried hammering it from an idle 1.9x's. I've tried bringing up to 1000 or 1200 or hammering it.....sometimes it would spin badly to the point I knew it was spinning and would have to back pedal. On a prepped track...1.9x's.

I'm gonna go up friday and make a couple passes on my Nittos and see what happens, then switch to the hoosiers and see what it does.

Just for FYI, traction bars dropped my 60's a full tenth when I was running F1's. So they are, or were working.

What's the stock stall on the convertor??? Maybe I should try launching from a higher Rpm. Maybe they are hooking great and bogging the motor a little??

 

I just talked to a local guy he he game me some info that may be help full.

No i've tried burnouts putting it in first and leaving it in first, putting it in first and shifting to second. Or doing it right in drive and letting it shift automatically.

He said my burnout technique where it's an automatic could be my problem, and I could be overheating the tranny fluid causing some slippage???? He said on the dot slicks you need to get them hot enough to smoke, anything more is a waste and could actually hurt my 60's where these trucks have so much torque and an unbalance weight distribution. Any ideas on this.

 

I'd take a white shoe polish bottle and mark a line from the tire to the rim. ( I always do this to mine). This will let you know if the tire and rim slipped and how much.

second, make a large & wide line on the tire. This way as the tire rotates someone can easily see if it's spinning.

As far as tranny slip, is your tranny stock? A ftvb? a line mod? Does the chip up the pressure?



Just throwing out ideas, Rich

 

Don, Your pressure is way too high. They should be around 15-16 cold, so that they are around 17 hot (after a good burnout). The first burnout of the day should be a good long one, the following burnouts can be shorter. Your DOT slicks are the exact same compound as the full slicks, so the guy that told you they require a different burnout technique as thinking of drag radials or something else..


Once you get these two things set, keep a record of your 60' times and ET's. If your 60' times are fairly consistent, then you are probably not spinning. As already mentioned, you may be spinning on the rim, this will eventually stop.

When my old truck was running high twelves, I was pretty solid in the mid 1.8 60' times, but if I came out over 1000 rpm at some tracks I would get some spinning.

 

One thing I noticed in your post is that you sometimes do a burnout in 1st gear. Always, always, always do your burnout in the highest non overdrive gear (3rd for an L).

 

I am having the same problems. Last year my ET Streets seemed to work ok but never got under a 1.8 60 ft time but averaged a 2.o 60 ft. I have tried many different ways of launching with no luck.
I borrowed a set of Hosier slicks and got it back down to 1.9 / 2.0 60 ft time I am pushing right at 500 RW. Hp now.

I did notice something Sat. I put my mirror down on the driver side and watched my burn out as I normally do. The burn out started the same with both tires spinning. Only this time the driver side stopped spinning for a second or two. It seems to have done this twice out of the 5 passes I made that day.

I have always ran the MT ET Streets at about 15 psi and the Hoosiers I ran Sat. had 14 lb of air in them hot.

2000 Lightning with 116K

 

Not usually, although I have tried it.

You mean like the one's they use on the top fuel and funny cars? That's an idea.

FTVB on a stock transmission. Line pressure should be stock, or what ever way Jim sets it for the Valve body as recommended by Greg.

Thanks for all the advice. I'm not a hardcore racer so I mean it's not life or death that i have low 60 times. But i'm sure you guys understand when you invest some money into something, you like to see results.

 

How old are your slicks????

 

this would be my second season with them. Probably about..........40 passes on them

 

I agree 100%
Mine were hot ( right after the first run) when I set them to 18psi.
Try 16 cold and if you don't get any massive swaying, try taken even another lb out of them, and another..... You may find with the 10.5's that you need even less than that ?


Suavy,
I got to stand at the tree between lanes (at JDM DAY 03) and got to watch and film people from inches away, while they did their
burnouts + launches. Man you would not believe how many Lightning's were doing only 1 wheel burnouts warming up the slicks
ASK DON, HE WAS LINING US ALL UP FOR THE BURNOUTS

Thats Don there in the black shirt, you'll notice he's looking under my L to make sure both wheels are turning (TG I DON'T HAVE THAT PROBLEM "YET") but many many did

 

I was having trouble with the one wheel burn outs in Orlando. Shawn(sp)with JDM suggested I not pull up so far from the water. I have been having pretty good success with my burnouts since. I get my slicks good and wet and just pull to the front of the water pit......I also noticed better burnouts when I stab the gas peddle.


Rocks