Thunderhill trackday report & photos!!!!
03-24-2009, 10:39 PM
#16
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Brian the car looks just fantastic and I'll bet you are having the time of your life! But you seriously might look into stiffer springs/shocks, it looks like you're on the bump stops in a couple of those shots and that is definitely not helping. Ask Mark Anderson about a stiffer setup, only Kibort can run on bump stops. 
[edit] and when are you going to paint a red hourglass on the hood?
[edit] and when are you going to paint a red hourglass on the hood?
I'm still finishing a couple other little $$$ things before I get the hourglass...I'll probably get a vinyl sticker...since its far cheaper than paint!
03-24-2009, 11:11 PM
#17
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Brian, I had the fuel-starvation problem at 1/4 tank and below- on my car ('85), the thing that finally cured it was heat-blanketing the area where the fuel lines run nearest the exhaust manifold on the passenger side... Turns out, that after a few laps with low fuel, it has been cycled to and from the tank often enough to pick up some serious heat. In my 85 with the lower fuel pressure, it would actually boil in the lines and vapor-lock. Fuel temps were over 120 deg F in the tank...not good!. Of course, I figured that out after replacing the filter several times, and the pump... 10 bucks worth of reflective blanket fixed it. I also fooled around with a cutoff switch for A/C, so I could run with A/C on. It would disconnect the compressor clutch at about 75%throttle, but this proved to be too much cycling for the clutch in a 20 min session....so now I just run it on the cool-down laps to try and cool the fuel.
Anyway, it might help your problem to put some insulation between the line and the headers. Don't insulate the line itself- just make a barrier so air will still flow over the lines, but heat is deflected away and down...
Great vids and best of luck! Hope I can get out there with you some day..
Steve
Anyway, it might help your problem to put some insulation between the line and the headers. Don't insulate the line itself- just make a barrier so air will still flow over the lines, but heat is deflected away and down...
Great vids and best of luck! Hope I can get out there with you some day..
Steve
03-26-2009, 04:17 PM
#18
Race Director
Thread Starter
Brian, I had the fuel-starvation problem at 1/4 tank and below- on my car ('85), the thing that finally cured it was heat-blanketing the area where the fuel lines run nearest the exhaust manifold on the passenger side... Turns out, that after a few laps with low fuel, it has been cycled to and from the tank often enough to pick up some serious heat. In my 85 with the lower fuel pressure, it would actually boil in the lines and vapor-lock. Fuel temps were over 120 deg F in the tank...not good!. Of course, I figured that out after replacing the filter several times, and the pump... 10 bucks worth of reflective blanket fixed it. I also fooled around with a cutoff switch for A/C, so I could run with A/C on. It would disconnect the compressor clutch at about 75%throttle, but this proved to be too much cycling for the clutch in a 20 min session....so now I just run it on the cool-down laps to try and cool the fuel.
Anyway, it might help your problem to put some insulation between the line and the headers. Don't insulate the line itself- just make a barrier so air will still flow over the lines, but heat is deflected away and down...
Great vids and best of luck! Hope I can get out there with you some day..
Steve
Anyway, it might help your problem to put some insulation between the line and the headers. Don't insulate the line itself- just make a barrier so air will still flow over the lines, but heat is deflected away and down...
Great vids and best of luck! Hope I can get out there with you some day..
Steve
VERY interesting....I know the fuel cooler is gone & replaced by a hose....I will have to take a look into that option!
Its still possible my intank pump has the typical broken hose too....Mark Anderson thought the internal tank baffle might have broken loose too....will have to pull the intank pump to find out?
03-26-2009, 04:23 PM
#19
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The tank baffle came loose on my track car and the crap that held it in place was killing my fuel pumps. Easy enough to check, just pull the sending unit and see if the baffle moves.
03-26-2009, 07:28 PM
#20
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03-26-2009, 08:22 PM
#21
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Brian, since you are track-only, you might want to put a Cool-Can in the fuel line somewhere- even just the simple one you add ice to before you run. The fuel temps get to be nasty with low fuel and a longish run. I haven't found a good spot on a street car, but you might get one where the washer tank was... or somewhere in the back of the car near the tank.
Steve
Steve
03-27-2009, 02:58 AM
#22
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Awesome awesome Brian!
Definitely jealous of the tracks you guys get to run in Cali, here in Washington there's nothing that even comes close to comparing.
Widow's sounding great!
Definitely jealous of the tracks you guys get to run in Cali, here in Washington there's nothing that even comes close to comparing.
Widow's sounding great!