injecting nitro/methanol

yes sir 4:30. I personally was happy with the 60' considering the launch rpm and track conditions.

nice pass! i think the 4.99 is gona happen soon.

that car sure does leave nice...

I thought I smelled that Nitro burnin!! Good pass KY !

very good numbers for your set up with that gear and terrible track conditions. What did the EGT graph look like?

egts on that tuneup was in the 990 range except cylinder # 6 it was 1020. I started on the rich side 110 pill and leaned it to a 115 today with a 10 % nitro mixture, that got all the cylinders in the 1020 range and probably could have leaned it to a 120 pill , but did not. It ran right about the same ets .

I have seen what I wanted to see and the 4:30 gears are coming back out and getting replaced with 4:86 the car just will not 60' near as good with the 4:30.

Thanks for the compliments guys.

I'm on the fence about the swap in mine, it did finaly 60' a bit better with the steeper gear, but never could get the mph back. Will see after next friday as to if it stays or goes back to the 4.30

I would say it depends mainly on your converter and tire size. I think I am on the fine edge with this 8" converter and that combined with 105 circ tires is causing it to load and slip the converter at a little higher rpm .

Here is video from first round qualifying yesterday. We qualified # 4 had to run Tim Murphy from the Fab shop first round he gave me a round with a red light good thing because I could not drive yesterday at all

With the 4.30 gear I see about 700 drop on the shift, with the 5.57 its like 900, this is with a toyota core converter, its in between say a 9 and a 9.5".......I'd say you theory on the converter slip is correct.

will see after friday, if I cant get it to run any closer to the 5.30 cap I may put the 4.30 back in, go back to straght meth and add a small plate lol.

Snakes got me an intake manifold on the operating table but it may be a bit before I get to try it out.

May be a dumb question but ive seen both yours and jons cars videos and i have a question. How can you guys get your suspensions to work without a lot of wheel speed?

We had to go from the 3.90 to 3.70's and now are on 3.50's to get enough wheel speed to make our suspension work. Of course we have a stock suspension setup and you guys dont.

Your turbo deal makes a lot more power, the more power the taller gear you can run the better and faster the car will go...............but too tall a gear to the point the engine struggles with it then it can be detrimental.

My old motor liked the steeper gears, but I'm not so sure this one does, I think it has more to do with the converter was too tight with the old combo but now its just right with the added power.

There is a balance between weight, available power, gearing, tire size, suspension etc.

richter69 wrote:Your turbo deal makes a lot more power, the more power the more gear you can run the better and faster the car will go. My old motor liked the steeper gears, but I'm not so sure this one does, we'll see. Plus your on a smaller tire.

i was thinking on the line they would all be about the same power. Ive seen randys launch and it looks like he leaves at 6500 or so.

Back to your regularly scheduled program.

I was only leaving at 4600 in the last video. I do leave at 6000 on a pro tree , but the car is much more sensitive to launch rpm with the 4:30 gears than the 4:86.

That might be because it is close to or is dead hooking and maybe bogging the engine a little bit with less torque going to the tires. My ic is 98" out and 2" high I honestly don't think it should hook that hard with that setting but it does.

Maybe dead hookng your turbo car puts a little bog that is unnoticeable to the ear. I mean you are only talking a little bit from a perfect combination and one not so perfect using everything thing you got to make et.

just a little up date , we raced at Music city raceway this weekend. I left the same tune on the car , launch rpm everything the same for the first pass.

last pass at I 57 was 1.14 60' 5.171 et 76 * air temp 29.200 barometer 53 % humidity

1st pass at music city 1.138 60' 5.188 et 96* air temp 28.825 barometer 41% humidity

I ended up raising the percentage of nitro from 10% to 12 -13% et picked up to 5.15 and ran 2 back to back passes withing .005 of second at music city.

The cars total et variance on two different tracks from an air temp of 57* at I 57 friday night may 27 to 96* air temp at music city sat june 4th is only 4 hundredths of a second . I believe it could win a bracket race if the driver could let go of the button right

How did the car do their before?

That was my first trip down Music city so I have no data as far as back to back ,but comparing it to jackson tn dragway back in april on m-5 the variance is still only 4 hundredths and I can throw gleason dragway back in march and its still only 4 hundredths after getting the winter cob webs blowed out I can even throw bowling green in from last november with the 4:30 gears it ran 5.15 launching at 4600 rpm.

I got my new 4.86 gears and putting them back in this week , my data recorder is showing an increase of rpm with the nitro % so I am almost positive the 4:30 gears are causing it too lean on the converter to much and its just maybe on the edge of not being tight enough.

your car looked and run damn good at music city the other night Randy! she realy does leave out but that nitro has a hellofa smell nice to get to hang out with you and the pit crew.

KY JELLY wrote:just a little up date , we raced at Music city raceway this weekend. I left the same tune on the car , launch rpm everything the same for the first pass.

last pass at I 57 was 1.14 60' 5.171 et 76 * air temp 29.200 barometer 53 % humidity

1st pass at music city 1.138 60' 5.188 et 96* air temp 28.825 barometer 41% humidity

I ended up raising the percentage of nitro from 10% to 12 -13% et picked up to 5.15 and ran 2 back to back passes withing .005 of second at music city.

The cars total et variance on two different tracks from an air temp of 57* at I 57 friday night may 27 to 96* air temp at music city sat june 4th is only 4 hundredths of a second . I believe it could win a bracket race if the driver could let go of the button right

Damn.........that thing is almost like gas for back to back laps

Nice meeting you Cool40 had a blast.

the consistency has got to be from the top secret Lem Evans dual fuel cam shaft not being sarcastic, you put one hell of a package together sir my hats off to ya

here is a video of us takin on a 565 bbc with a 1471 a top it he red lighted and barely beat me across the line



here is the bbc on a solo pass its a bad motor scooter

Lem has some "flex fuel"cams? maybe thats why mine worked good on "flex fuel" too.

whatbumper wrote:May be a dumb question but ive seen both yours and jons cars videos and i have a question. How can you guys get your suspensions to work without a lot of wheel speed?

You can often get away with dead hooking/damn near dead hooking (say for example up to around 1 full tire rotation) some big (and/or big"ish") tire cars with decent power down to around the 4.90-4.80 range. But often once you start making enough power to run faster than that range, dead hooking the big tire car can load the wheelie bar much too hard (and possibly cause w/bar breakage) as the car tries to climb the ring gear much too quickly/violently.

This showed up on the ugly Willys once my friend decided he wanted to try to go faster than 4.70's. Even though he threw some more power at it, it still had about the same 3/4 tire rotation as before then it would fully hook. But then when hooked it was hitting the wheelie bar much harder flexing it much more & actually started to chew up the wheel it's self as it basically picked the nose up, unloaded the car, & slammed it back down again. All this resulted in wasted time/energy/ET as it was still only able to run around 4.70's as before power was added, but it was much more inconsistent.

Then after a major 4-link change it now is able to generate some decent launch wheel speed & doesn't actually "fully hook" until way out there. Now with added wheel speed it launches much more smoothly & has improved to a 4.61, a 4.58, a 4.55, and a 4.48. And the 60ft's have gone from the 1.07 range to some 1.05's a few 1.04's & one 1.03.

The down side of using a bunch of launch wheel speed with power is you're walking a fine line between what is in effect a controlled tire slippage during the first 10-60 ft (or more) & a flat-out tire spin or shake if the wheel speed gets out of hand.