Enderle square BV blown alky limits?

Hello from Estonia!
Last year we had blown gasser: 540 Dart Big M (wet), Edelbrock Victor CNC heads, TBS stripped 8-71, Birdcatcher, MSD #7535, ATI custom 10", 1.76 PG, 4.10, 4-link, 32x16 GY #1408
It made 1033/7100 & 845/5700, 16 psi (25% OD), #33 hat, 100# main, 30* (could have used pump gas, huh? )
We won Estonian Outlaw championship, best run (car is self built '79 Camaro, 2700#) was 8.60/164, with 1.33 60', mind you. Tracks here are so bad, that you spin 330'. Max rpm 7500.
This season we are going for another first in our country, blown alky. Already got around 11.5 pistons and BME rods, also 3.70 rear.
So now the barrel valve is a question. Most likely we have to stick with square i.e. convert it to alky. What else to do, besides changing spool/piston?
We are not looking for max power, just hope that it would work at all, since it's the first blown alky here.
Just curious, how much power can square BV eh... flow through?
Car:
http://www.tqhq.ee/camaro79/images2/big/CRW_9829.jpg
Engine:
http://www.tqhq.ee/camaro79/images2/big/IMG_4003_copy.jpg
Thank You,
Partel

 

Didn't know the answer, so I called Jim @ Enderle to help you out.

Jim said don't use anything bigger than a 110 pump (~13 GPM) on the square valve.

Good looking car and motor. The spectator 'safety' fence in the photo leaves a bit to be desired though.

Looking at the motor, if that's an 80A series pump, you'll be needing a larger one.

 

Rack ?

I know this has nothing to do with your question but
what is holding your rack & pinion in on the left side
of the picture. You should have a billet clamp on there.
I hope there is something there.

 

Look closely at the photo. I can see what appears to be a tab welded on the rack, perpendicular to the rack.

It's between the boot clamp and the zip tie.

 

Thanks!

Yes, it is 80A-1 pump, of course, and also yes, I am considering 110. Again, we would just like alky to work at all, not to make max power.

We are trailblazers in our country, for example, last year these were all new to us:

*injection (we ran 2x850 800+ hp pump gas #3600 streeter before, 10.3/134, spinning 600 ft )
*stripped blower
*tubeframe chassis (self built, took 1000 hours during 1.5 ys)
*4-link
*double adj shocks
*parachute
*t-brake
*PG

NOTHING has been fine tuned yet, I am happy, that they worked at all... If only I would have known back 2005, what (little) I do now...

We don't have a data recorder yet (prob V300), we have never restripped a blower etc etc

Regarding "safety" fence, picture decieves a bit, it was quite far and moving away 45*, grandstands started soon. Spectator safety is roughly ok now, you don't want to know what it was like 10 ys ago - running over toes at 100 mph... On-board fire system is on the wish list..

I would be happy with reliable 1300+ hp, anything over 1500 and we don't need a tranny, but a direct drive One foreign competitor made a demo run with his Pro Mod: 7.8/188, you get the idea...

 

We run 990's through sq BV's but we have pump loops before the BV.

 

You're going to need to up your ignition for alky. That MSD Digital 7 isn't going to make the grade.

 

Yeah, we need those "zero gap" spark plugs for 190 mJ.

Tranny won't live either, first it started to creep forward on brake, later the band gave way too, so the car stood still, at least It's an ex spare of Finnish Outlaw car, smth like 8.1/170, our tranny guy put new stuff in, will see...

 

We're running a beefed up T-400 at 3450 Lbs. Our last 505 was just slightly more power than your current blown gas motor.

I think we have maybe $1500.00 USD (plus converter cost) in the T-400 and have yet to break it (knock on wood).

You could have a beefier PG built, but it would cost substantially more money than the T-400.

 

Ok, we got the first methanol engine running in our country Estonia. We are demigods now.
First championship race (four total) we got to the finals, but lost to our nemesis by 0.0015 sec (4 in) due to spinning 330. He has 565 Shafiroff + N2O. The speed is by far new national record.
No Racepak
60' 1.345
660' 5.51 @ 133 (yuck)
1320' 8.392 @ 171.5
#2700
8-71 25% over. Only 15 psi.
jets were (hat only). 58/56/56/54, main 125, E110, 13.4 gpm flow tag. Pretty fat?
Timing 30-34
Video of 2nd test run, easy start, hi gear WOT. Surprisingly it did not misfire badly, even with our 190 mJ Digital 7. Gap was 0.020. 5671-9
http://www.youtube.com/watch?v=3ldmAinR1Qw
We had pretty big blowby, blew the breathers off. Rings are C&A Zero Gap Second.
Any advice?

 

is that a airport runway are drag strip

 

Partel, good looking car.

I looked at your video and it sounds like right at the end of the burnout, the motor is being pulled down pretty hard by feathering the throttle and that could damage your converter and/or transmission. You might want to just let off the throttle at the end of the burnout.

 

Yes, all races are held on ex-Soviet Air Force runways, because our country does'nt yet have a dragstrip, which is under work.

This particular one is a former MiG fighter base, which has one of the best tractions available to us.

 

In that video, I saw a car returning up the left side, just after you launched.

Maybe at the very least some temporary concrete barriers should be installed for safety?

Congratulations on your record.

 

Blown alcohol

I run an ex pro mod. We run with the outlaw top sportsman class. I have a blown injected 540 on alcohol. We run 4.70 in 1/8 and 7.3 in quarter. This is done with a Dyers 8-71 street blower and a BTE glide launching @ 4500 on the trans brake. 1.0 60' time, so consistent it could be a bracket car. Just turned the tranny in yesterday with 70 passes on it. Nothing wrong, just been too busy to pull it out. I also run an msd ignition with a digital 6. No problems ever, knock on wood.

 

Thank you!

We had Event #2. This time in a former strategic bomber base. This is as slippery as a concrete can be, worst track here.

Nevertheless we cranked up OD from 25->38.6% (61/44). Hat jets were +2, main 125->115. Total area is basically the same.

Best 60 ft was 1.478 , but best ever 660 mph - 136.64 and trap speed - 172.43, new national record again. Spun nearly to half track...

Videoclip from national 9 o'clock news:

http://www.reporter.ee/index.php/2008/06/24/raadi-lennuvaljale-kogunesid-kiirendusvoistlejad/

Next 2 events are on better tracks, will see...