Sorry for the tease due to completeness of this post, but I always like to share as soon as info on stuff like this becomes available. I still need to gather and sort through the data. This kinda sticking the toes out looking for landmines research is just that. Hopefully with time more data becomes available.
I ended up doing 10 dyno runs at AntiVenom in Tampa tonite on a dyno jet. i'll see if I can figure out a way to post data that shows logs of the runs vs the dyno graph.. time permitting.
To be 100% clear, the runs were performed using BP93 fuel and straight methanol for injection. And this is the first time ever this car has ever been on a dyno. Tuning done by novice(myself)
First couple pulls without nitrous setting up the boost controller, watching the tuneup, etc the car at 21 PSI made 480 RWHP at 11.3 AFR 23 degree's timing. Three baseline pulls were made all in the 480-500 RWHP range at lower 20's for boost. I cranked the boost up to 25 ish and it netted approx 530 RWHP. At 27 PSI it made 548.5. So as the boost was increased from 20-27 it continually showed gain on the dyno. I really didnt have the intestinal fortitude to run the boost to 30 PSI to see what it would do since the dyno was 60 miles away from home and the pulls were being done at 8 PM.
Now to the nitrous. The pill used was in their charts a 35 HP pill. Bottle pressure was 950. The fuel portion came from the alky system through a solenoid and a fuel jet. I lowered the boost to the original settings which were 20 PSI, then on the first pull the boost jumped to 25 when the button was pressed and the power jumped to 584.7. AFR dropped to 10.8 and zero knock was recorded. I decided to drop one jet size on the fuel and the next pull, it leaned out to 11.3 but picked up 2 degree's of knock and the power dropped of to 576. At that point I made a boost only pull of 27 PSI and it made the 548.5 cleanly.
So the nitrous works. At less boost it made more power than without. The top of the up-pipe froze. Temp difference was only 5 degree's less with nitrous.
At Reynolds on the 132 pass I ran 27 PSI. Thats approx 548 RWHP and 720 approx flywheel given the automatic and non-lockup converter. The 67 is rated at 700 ish so I believe the numbers to be in the ball park. Hitting the button probably jumped the power to the 780 range flywheel..call it instant Q trim :biggrin:
I wanted 600 RWHP but also wanted to drive it home.. i'll play with larger jetting and see where that takes it.
So the question is... what is worse.. running 30-31 PSI without juice or 25 PSI with juice... that is one question I cant answer.
Aside from that.. the guys at the shop were really impressed given its only a 6 banger..
old saying... great dyno day is when you drive there and leave in one piece..
See what I can do to put up the sheets.. And more important see what it does on the spray going down the track. But spraying on a dyno I felt more comfortable.
:wink:
I ended up doing 10 dyno runs at AntiVenom in Tampa tonite on a dyno jet. i'll see if I can figure out a way to post data that shows logs of the runs vs the dyno graph.. time permitting.
To be 100% clear, the runs were performed using BP93 fuel and straight methanol for injection. And this is the first time ever this car has ever been on a dyno. Tuning done by novice(myself)
First couple pulls without nitrous setting up the boost controller, watching the tuneup, etc the car at 21 PSI made 480 RWHP at 11.3 AFR 23 degree's timing. Three baseline pulls were made all in the 480-500 RWHP range at lower 20's for boost. I cranked the boost up to 25 ish and it netted approx 530 RWHP. At 27 PSI it made 548.5. So as the boost was increased from 20-27 it continually showed gain on the dyno. I really didnt have the intestinal fortitude to run the boost to 30 PSI to see what it would do since the dyno was 60 miles away from home and the pulls were being done at 8 PM.
Now to the nitrous. The pill used was in their charts a 35 HP pill. Bottle pressure was 950. The fuel portion came from the alky system through a solenoid and a fuel jet. I lowered the boost to the original settings which were 20 PSI, then on the first pull the boost jumped to 25 when the button was pressed and the power jumped to 584.7. AFR dropped to 10.8 and zero knock was recorded. I decided to drop one jet size on the fuel and the next pull, it leaned out to 11.3 but picked up 2 degree's of knock and the power dropped of to 576. At that point I made a boost only pull of 27 PSI and it made the 548.5 cleanly.
So the nitrous works. At less boost it made more power than without. The top of the up-pipe froze. Temp difference was only 5 degree's less with nitrous.
At Reynolds on the 132 pass I ran 27 PSI. Thats approx 548 RWHP and 720 approx flywheel given the automatic and non-lockup converter. The 67 is rated at 700 ish so I believe the numbers to be in the ball park. Hitting the button probably jumped the power to the 780 range flywheel..call it instant Q trim :biggrin:
I wanted 600 RWHP but also wanted to drive it home.. i'll play with larger jetting and see where that takes it.
So the question is... what is worse.. running 30-31 PSI without juice or 25 PSI with juice... that is one question I cant answer.
Aside from that.. the guys at the shop were really impressed given its only a 6 banger..
old saying... great dyno day is when you drive there and leave in one piece..
See what I can do to put up the sheets.. And more important see what it does on the spray going down the track. But spraying on a dyno I felt more comfortable.
:wink:
