New best time April 17, 2010, 05:34:17 PM I went to the track today and got a new best time of 14.6@93 mph. The car lost 2 mph on the top end (I backed the base timing from 16* to 14 and lost 2 mph:hick:) but the car has at least .5 second in it if I could launch it. I spun bad on launch flashing the converter. There were a lot of people at the track so I only got three runs to play with. If I had more time I could probably sort out the launch and gain a few tenths. I've attached the time slip. I'm car number 228. Not bad for a mild 302 in a 3600lb fatty Quote Selected
New best time Reply #1 – April 17, 2010, 11:11:02 PM I bet with practice you could get those times down even more. Nice run...where are the vids??:poke: Quote Selected
New best time Reply #2 – April 19, 2010, 05:49:07 PM Quote from: 50tbrd88;318713I bet with practice you could get those times down even more. Nice run...where are the vids??:poke:Vids? You want to see me loose to 12 second cars? :hick:Every time I go to the track for test and tune every car but mine runs 12.99 or faster. I never get to run any 13-14 second cars so I can have a close race. Quote Selected
New best time Reply #4 – April 20, 2010, 09:34:35 AM Quote from: 32VFoxBird;318917what size tires?I'm running 225/55/16 Firestone Firehawk GTs. Quote Selected
New best time Reply #5 – April 20, 2010, 10:43:46 AM Are you going through the water box then doing a burnout? On street tires, you should skip the waterbox and burnout completely. Most street tires won't get sticky like drag radials or slicks. Just baby it off the until 2nd gear. Or get some drag radials. :) Quote Selected
New best time Reply #6 – April 20, 2010, 12:59:57 PM A tip which can make a difference on a F/I motor at the track: Pull the spout out and set the timing to full advance (leaving the spout out). This "locks out" the distributor. You need a timing light with a dial for the advance. Intitially set it at 34 degrees and run down the track and check your MPH on the slip. Then advance it two degrees, run it and see if you pick up MPH. If it picks up add another degree and run it. If it slows down, back it down one degree and run it again. 38 degrees or more may cause it to detonate (depends on your fuel, how hot it is, cranking compression, type of cylinder head, lots of variables), so listen close, if feel the power fall off or get a rattle or "ping", let off the gas and back the timing back a bit. It's a little dicking around, but it should get you down the track quicker.Mark Quote Selected
New best time Reply #7 – April 20, 2010, 03:51:08 PM Quote from: 32VFoxBird;318982Are you going through the water box then doing a burnout? On street tires, you should skip the waterbox and burnout completely. Most street tires won't get sticky like drag radials or slicks. Just baby it off the until 2nd gear. Or get some drag radials. :)Oh I know going through the water box is a no-no on street radials. I don't do a burn out either. I think I just need some drag radials. On the street if I hammer it the car will leave two nice 40 foot long squiggly black marks from a stop:hick:Quote from: 86T-bird;318997A tip which can make a difference on a F/I motor at the track: Pull the spout out and set the timing to full advance (leaving the spout out). This "locks out" the distributor. You need a timing light with a dial for the advance. Intitially set it at 34 degrees and run down the track and check your MPH on the slip. Then advance it two degrees, run it and see if you pick up MPH. If it picks up add another degree and run it. If it slows down, back it down one degree and run it again. 38 degrees or more may cause it to detonate (depends on your fuel, how hot it is, cranking compression, type of cylinder head, lots of variables), so listen close, if feel the power fall off or get a rattle or "ping", let off the gas and back the timing back a bit. It's a little dicking around, but it should get you down the track quicker.MarkNext time I go I'll play with the timing and see if I can get that 2 mph back. I backed it down from 16* to 14* base to prevent detonation because I haven't really had a chance to check for pining with the new trans (which has a 5400 rpm shift point at full throttle), a C&L MAF, and 24lb injectors. I don't have any where near me to do a safe full throttle run without getting a ticket or hurting someone. Stupid city living;) Thanks for the tip. Quote Selected
New best time Reply #8 – April 20, 2010, 09:33:58 PM Quote from: thunderjet302;318900Vids? You want to see me loose to 12 second cars? :hick:Every time I go to the track for test and tune every car but mine runs 12.99 or faster. I never get to run any 13-14 second cars so I can have a close race.Hey don't feel bad I'm sure if my car where there I would be getting stomped on too. If it makes you feel any better, you should have no problem covering my 'bird by a carlength or two Quote Selected
New best time Reply #9 – April 21, 2010, 12:11:30 AM Quote from: 50tbrd88;319046Hey don't feel bad I'm sure if my car where there I would be getting stomped on too. If it makes you feel any better, you should have no problem covering my 'bird by a carlength or two I don't feel bad I just wish I had a close race. It only happened once. I beat a Honda Civic SI by a second. To get a video I'd have to convince my girlfriend to come with me to film. That's not going to happen any time soon Quote Selected
New best time Reply #10 – April 26, 2010, 05:44:27 PM Well I hate to say it but that 60ft pretty much sucks, with good traction 1.90-1.95 should be doable... I thought you'd make more MPH as well, my old wore out 5.0 would trap 103 mph all day and has busted 105 when she was in her prime... My car weighed 3760 with me in it and that was before all the A/C components were reinstalled, I did have a small tool box in the car so probably made up the difference...BTW the timing lockout and setting it at 36* total will likely make it hard to crank when hot, especially if you have an original type starter... I tried it on mine but never saw any improvement over the 15* advance I normally run... Quote Selected
New best time Reply #11 – April 27, 2010, 11:01:40 AM Oh I know my 60' sucks. Radials+no quad shocks+me sucking at launching=horrible 60' times. I really need to practice getting the car off the line. I wish I could get more runs in at the track but I usually only get 4 or so runs. I've got to stop burning the tires off.I also need to get the mph back. It used to turn at least 95 mph. I need to tinker with the timing and possibly the fuel pressure. After driving it for awhile with the 24s it seems that the fuel ratio may be a wee bit on the rich side, which may be costing me some power. Quote Selected
New best time Reply #12 – April 28, 2010, 10:32:05 AM To give a bit more information as to why locking the timing out may get the car down the track quicker: The EEC controls the timing (you set the base). It's designed to put in up to 20 degrees of advance in addition to choosing when it come in (so you don't really know what the total timing actually is or when it comes in). Pulling the sprout and locking the computer out eliminates the variable and provids full advance from idle (a heavy car w/a low stall converter may benefit off the line). Timing requirements for a specific combination vary, requiring methodical testing to find where it may work best (seeking the highest MPH).Tom is correct on the slow crank on a hot engine. The proceedure is a strip only suggestion, when the the car can cool between runs.Once you find the best spot w/the sprout out, you can plug it back in, re-set the base timing and see if there's any difference. It made a difference on my car, on Tom's it didn't.If you like to tinker and try stuff it can be fun (but if you don't, it's kind of PITA). Test & Tune;) Quote Selected
New best time Reply #13 – April 28, 2010, 02:36:59 PM Quote from: 86T-bird;320070Tom is correct on the slow crank on a hot engine. The proceedure is a strip only suggestion, when the the car can cool between runs.Yeah I had a aux starter button rigged and would turn on the switch after the engine was spinning, she'd fire right up even when hot... Needed this, cause sometimes you don't have sufficient time to cool the engine, especially when you gotten down to last couple rounds of elimination... Quote Selected
New best time Reply #14 – April 28, 2010, 10:34:15 PM Ahh, there is down side to winning!T&T this evening was painfully slow (with the Mustang not the T-Bird), only 4 runs from 5-8:30. Beautiful day, just repeated oil downs. Guys getting their new combinations sorted out I guess... Track is getting rubber laid down and traction is coming around! Quote Selected
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