KB With a 3" Upper- Another 25 HP?
 

I am going to try out my new 3" upper on the KB tomorrow if the weather holds. I have been running a 3 1/4 with a 2# lower, and with the cooler temps, it is running pretty d@mn strong. I can fry the 305 Nitto DR's into third if I just stand on it. Should be pretty interesting with the three incher. I have been running BR7EF's in it, and although I wasn't overly pleased with them earlier, with the cooler weather they seem to perform better from idle all the way up. What kind of plug are you guys running with similar setups?

Speaking of weather (for you global warming enthusiats) a couple of days ago it got up to 73 in Fairbanks for a high, which is pretty unheard of for October. Amazing thing is that the low that day, 59, was warmer than the old record high!! Maybe I will be driving with the drag radials on a little longer than usual this fall:D

Mark:)

Mark, my set up is a little different, KB 3.25 upper, 9.25 lower - I am pushing 16lbs of boost.

I started stock as everyone does, quickly moved to Denso IT 22's, then to AR 93's and I am now very satisfied with Beru S1K's the silver tipped plugs.

We all have had varied success with plugs I think it is important to know you might have to try a few before a match is made.

Good Luck with the new pulley!

D-Day

:thumbsup:

I can barely get 17 psi with a 3" upper and 2lb lower.

I run a 9.5" (8#)lower and a 3" lower. Makes 20#s. With my 2.8" upper goes to 22.5#s:thumbsup: My Bru SK1 sparkplugs work awesome too with this combo. Problem now is Im pegging my 90 mass air.:eek:

My mass air hits 5volts with 17psi, 21psi, 22psi, and with 26 psi it hits around 4000 rpm....

JDM is sending me my new PRO-M mass air with 2 ,103 octane files this week. Will retest at the track friday. Im running 92 mph in the 1/8th mile then the meter pegs and truck noses over going through the eyes at 114.

Ak,

Nice Indian summer weather up there. When I changed from 3.25" to 3.0", I picked up 2 #s boost, 26 ponies and 35 FBTQ.

NoSurprise

You may have other problems if you aren't trapping more in the 1/8th. With the horsepower #'s you've posted I'd expect near 100 mph in the eighth at least...

I figured I would probably get around 17-18#'s like Easterisland. I do like that HP & torque increase you posted Nosurprise!!! Should definately feel that on the Ass-o-meter.

Promodel, let us know how the Pro-M performs. I have noticed a few people happy with the Bru SK1's lately. Might order some over the winter, seeing how I enjoy changing plugs so much:D

Mark

My truck maxes the meter out at about 4,100rpm..

There are ways of tuning around it... You may have another problem promod..

Also my truck traps 92.x in the 1/8th too, but Im making much less HP than you.

-Dale

I know my tranny is slipping, but how much I dont know. also with a 2.1 60 ft time on DRs. With slicks and a proper burnout I hope to trap around the 105 area. Im goona try th mass air and JDMs chip then get into my tranny and any other problems. I keep hitting my rev limiter, wierd problem. :thumbsup:

If if get good traction my mph goes down compared to runs when I don't get good traction and my 60 foot times are slower...

I agree with easter, better 60's tend to lower my mph..

-Dale

mark, You will notice a big difference when you change the pulley. The 5 volt issue with the meter is something we have delt with a long time ago. as soon as i put the pedal to the floor the meter pegs almost that fast. we tune around that problem.. hope all goes well and you meet your goal....:thumbsup: JL

anyone running stock rods, if so how much boost are you pushing?