Dynos: track  

Dyno sheets & track fun from Kurt's car

4/27/6  

click here for the video of his: 12.92 run (.wmv file)

and this is the slip below

1st Dyno Day: 4/1/6    

First of 3 was better.  The shop didn't seem to know they needed air moving for us turbo people.  Ok heat soaked intercooler, unknowingly from playing with a Mach1 that had the same destination a couple minutes before and the boost was set ~19-20psi, drive in get there just after opening and ended up first.  hummmmm, ok..................Got tied down, hose up the rear, clipped up, rev'd up.  This is the first one, the 2nd and 3rd both were ~1.5hp lower.  Sort of like just dyno'n a non-intercooled flatty imo.  They were also starting the runs at 3000.  I can only guess they are used to seeing 4x4 trucks, after all that's what the shop is for.  From what it looks like on the graph, the MAS just can't respond fast enough starting with the rpms that high; the boost jumps so quickly all 3 times, it was ~16 on the 1st, then Kurt lowered it a tad and put the timing up from 10 to 12 but the boost stayed the same, hot hot hot intercooler and the ovcp you couldn't hold your hand on, it was so hot consequently it went down 2hp but the boost just stayed the same ~16, then for the final run put timing back to 10 and the boost spikes to ~18 then settles at 15-16.  I can't imagine the heat in the intercooler on the 3rd.  If you can't tell what that says, click HERE for the full image. 

Same setting out on the road a few hours later the boost hangs at 20; is was too hot in that garage without a blower for the intercooler I don't think they get many turbo'd cars in there, the only other one they mentioned was some Mazda and said they put a bag of ice on the intercooler and sprayed water onto it and gained 20hp.  Well, unfortunetly I wasn't carrying a bag of ice in my pants this morning.  We came back home, changed the cam to one of TimC's and put on mechanical rockers but by then they closed so we are going back Tuesday with a blower and some C02 to blow on the intercooler while it's doing the runs and flip the MAS up into the air so it won't suck any in.  Good news however, now with the cam changed it quite easily extended the range past 7000rpms with stock valve springs.  Want to get them to start the runs around 1500 too.  It would have been nice to have had a working intercooler, by the 3rd run they did have a home-type box fan but that didn't do any good at all. 

4-11-6

Well guys and gals I just got back from Street legal night and I can pretty happy with my run... My numbers were

60' ... 2.44 Laughing Laughing They don't prep the track on tuesday
1/8 ... 9.184
1/4 ... 13.835
MPH ... 104.11

Problems... 225 pep-boys tires... Blown struts and me burning out through 1st and 2nd and the 3rd gear bark heard round the world... I will be goin back soon

Kurt
 

2nd Dyno Day: 4/22/6

BCFPR base set at 40psi, boost 20psi, mechanical rockers installed, bottom end torque cam (lower than stock)

This time the blower was on the intercooler and is the primary reason for the greater power, MAS flipped into the air-filter removed.  FPR did it's job, put in SO much gas far too soon but as boost compensation regulators go, that's what you have when the ECU can't do anything with/about it.  This was the 2nd run today below, in the first run the base fuel pressure was 36psi and the HP was only 0.1hp lower.  We tried another run after this (the 3rd) with the base at 45psi, car stumbled-too rich wouldn't idle smoothly either so that wasn't an option and the run was halted.  Runs started at 2000rpms instead of 3000 like the first time we were there.  Run #3 in this graph below is the 3rd run of Day1 on 4/1 for comparison.  This is about it for the stock ECU; it's just about to be replaced with a stand-alone.  The A/F is way too rich when the boost comes on and in the end it's still not enough gas.  The next upgrade will be rear tires to see the track time shorten and perhaps the intercooler swapped and hard pipes added at the same time but we will dyno one last time before removing the stock ECU to see what HP that additional cooling provides.  We may however put a stock mechanical cam in and try it after these upgrades.  If you can't tell what that says, click HERE for the full image.