| 2016 Pre Season Test Session |
Subject: 2016 Pre Season Test Session by rklessdriver on 2016/4/5 17:19:52 Went out Saturday and made a few (all motor) test passes to get my new carburetor jetted up. My new carb is a custom built AED G2 4500 "Dominator". Real nice piece. Check it out. [URL=http://s50.photobucket.com/user/rklessdriver/media/Facebook/Mobile%20Uploads/12418048_1593966817589468_2110920081333664757_n_zpsskji2829.jpg.html]  [/URL]I also wanted to see how the new MT 275 Pro Radial tires drive at speed... knew traction wouldn't be an issue running on motor alone but it was good to see no surprises on the high speed part. Also I didn't want to mess with anything on the car too much, so I just left the timing where it was from last year 28* (makes it easier for the box to retard enough for the nitrous)...... BTW motor makes best HP at 40* timing advance N/A, so it's down a ton of HP running it N/A with the timing so low. Same thing with the launch and shift RPMs... on NO2 I launch at 4000RPM and shift at 7000RPM, so I just left that stuff all alone. Converter stalls about 5,200RPM and Peak power N/A is at 7,500RPM so..... yea, I'm leaving a lot to be desired. But again I wasn't there to try and set a new N/A record. I just needed to run it down the track and see how the carb reacted and see that nothing else in the car went bad over the winter. And I ran the full 1/4 mile N/A to get the air pressure going over the hood/cowl scoop to be similar to what it is on a full boogie NO2 pass in the 1/8th mile. First pass car went 1.53 60ft 6.75@101MPH 660 10.47@133MPH 1/4 Everything was just as smooth as glass. Car left like a pig and just layed against the TQ converter for the entire first half of the track..... 6,000 RPM it felt like someone hit a small shot of nitrous.... then it shift at 7,000RPM. High gear shift (Powerglide) came about the 1/8th mile mark LOL...... AFR was rich... 11.3ish once everything stabilized. Came back to the pit and knocked 4 jet sizes out of it. From 91's to 87's in all 4 corners. Second pass: 1.53 60ft 6.77@100MPH 10.55@132MPH Again car left like a pig, layed against the converter all the way down the track and for whatever reason (bored watching the AFR meter I guess) I stupidly reached up and grabbed the shift handle and shifted it into high gear at 6,000RPM... why I did this I have no idea.... car has an air pod activated shifter, so it's not like I'm in the habit of having to manually do anything in this car. Ring rust I guess.... The AFR was much better at 12.4ish which is what I was shooting for with the previous jet change. I came back to the pit, let the car cool off, charged the battery a bit and waited to make another pass. Third pass: 1.48 60ft 6.62@103MPH 10.32@135MPH Again nothing exciting happened while driving.... got to watch the NGK Powerdex AFX AFR meter all the way down. AFR was 12.4 once everything stabilized. Car feels so slow it made me almost sad to drive it this way.... However, 10.30's and 135MPH is pretty impressive considering... 3050+LBS car with a 3.89 gear, 2spd Powerglide with a tight aggressive nitrous converter.... I bet with 40* of timing a serious 5000RPM launch and 8,000RPM shift point the car would run high 9's all motor. I was tempted to find out but I have to make an entire season of racing and there's no reason burning up more fuel, tires and life off the motor... maybe at the end of this season I will tune it up N/A and make a few passes to see. Maybe put a better N/A converter and gear under it as well.... Next Saturday the 9th April is my first points race. I have 6 new nitrous bottles filled up, new AED carburetor is tuned in and the new 275 Pro radials are mounted up. Everything is ready to go. Still got my last race of 2015 race winning 31 jet tune up in the fogger (baby tune up). Hope to go 5.50's off the trailer and 5.40's by the end of qualifying. Will |
