Drag Racing Discussions > Front Engine Dragsters
I know Why NITRO is $35 a Gallon
dusterdave173:
Because it is WORTH IT!!
Yesterday at Greer SC Hotrod Reunion 3 we made three great runs---weather was 70 degrees sunny and perfect--first run 5.69 like always then we added a 18% mix of nitro and bam! 5.34
putting car away last night--oil was good clear--compression test was on the money--plugs looked Perfect! Pipes had just a little bit of tack---lash all good so.....30% here I come baby all indications are it will eat it like candy--
I did add a qt of Tolulene to my 5 gal mix There were zero signs of detonation so going to try it next time out--I do plan on rich it up one pill from current 75 to a 70 Timing at 39 and the color was right at the bend in the ground strap
There is a video up on Youtube search David Kluttz Dragster Greer Reunion 3 I used a $90 video camera and I am 60 and can't edit but hey it is something at least
Car got up on the tire very well during the run--It pulled like you jumped out of an airplane with a cement mixer strapped to your ankle!! I mean she was PULLING Hard!!!
masracingtd1167:
That's a nice gain in performance ! Have you ever checked your cranking compression ? Mine is down from 225 to 210 by retarding the cam 2 degree's ! I plan on closing up my intake valve lash to see if it will lower it a little more !
dusterdave173:
Yea I see what you are doing
I am at 13.6 - 1 cam is a 108 270/275 at 050 do not know intake closing spec
I feel like from looking at plugs etc that I can use higher % up to a point--think with my compression ratio I am limited to max of maybe 30% decided that since my actual % at race time was about 18% ( not 20 I had listed) that my next batch will be at 25% for first pass---
If I had known I was going this route I would have built a nitro specific unit but fell into this by running some M5 and then 10% and now wow! i am hooked---figure it is better than a blower at this point--with blower I start all over with converter etc I just want a 4.90 whatever time slip no weight to be lost so it is watch the plugs and keep climbing
I have a -0 pump 75 pill on most days and 14 nozzles---so nozzles are limiting also I guess had some 18's but sold them never dreaming would go this route but
I LOVE the way the car has responded so I am going to re read Spuds notes a dozen more times and be careful as I can be My cranking compression is around 225 ish If it comes down to it I can add head gasket thickness pretty easy
Sure is fun!!!!!!!!!!!!!!!
dusterdave173:
I have run a 75 pill since car was built--she always runs great--never milks oil though my BV leakage is higher than many at 30% ( .002 thou on blades ) always figured she was fat but really now looking back I think maybe it was pretty close to dead on--I have never shown any heat up the plug threads at all NGK 5671-8's Vertex mag
I have never tried leaner or richer pill because she always acted great so why mess around with it but figure go to a 70 with this next jump just to be safe as possible
ALL help and thoughts much appreciated
All in all 20% has been a cake walk so far
I do have alum rods in this engine and alum heads
Using Tolulene as Spud suggests thinking it is doing the job so far
wideopen231:
I have not run mine with nitro on the track.I did pick up 5 gallons to play with. If sound and response are indication 20% will be fun. I fired it off last weekend and got it tuned close. Since I had a jug of nitro ,I couldn't resist. Mixed up 1 to 4 gallons in jug and filled the tank. MAN that sucker came to life. As soon as windshield and helmet pads are back and I find a trailer its time to see if all this work pays off. Hopefully cpl weekends and she will be ready for booster shot.
You guys already playing make me sick.LOL
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