When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I beg to differ, if I can keep IAT's to 30° above ambient, I have only you guys to thank, well Sav and Lars actually.
Nice to be able to stop at the end of the track too.
I beg to differ, if I can keep IAT's to 30° above ambient, I have only you guys to thank, well Sav and Lars actually.
Nice to be able to stop at the end of the track too.
In terms of heat load, a 20 minute track session is like doing 20-30 1/4 mile drag passes back-to-back.
I'd be much more concerned with the stock radiator in the photo than the lack of a turbo heat shield!
To be fair it is a 93 1.6, I don't even want to say what his dial in time was. I was eliminated immediately and for all I know he broke out with a 13 second pass on the next round? I usually head home after I am eliminated.
As far as radiators and heat shields go. I agree that the heat load is logs higher on a road course, but it is different. I run a stock radiator and can get away with it because I am moving 100 mph, so tons of air flow. My coolant temps are lower at the end of my logs. However I am certain that my turbine housing and down pipe get pretty hot at the top of 4th gear. I can get away without inconel studs so obviously not as hot as you guys. The brake master seems pretty critical though.
The biggest difference is sustained acceleration vs bursts of acceleration/deceleration.
Drag cars don't really see heat issues until they are seriously fast. Like deep into single digits. Vs a road track car that can exceed the cooling system capacity at just above stock power levels.
As far as radiators and heat shields go. I agree that the heat load is logs higher on a road course, but it is different. I run a stock radiator and can get away with it because I am moving 100 mph, so tons of air flow. My coolant temps are lower at the end of my logs. However I am certain that my turbine housing and down pipe get pretty hot at the top of 4th gear. I can get away without inconel studs so obviously not as hot as you guys. The brake master seems pretty critical though.
FWIW, I've done track days without a heat shield in place and the only time it's actually been an issue is when I shattered the transmission and had to sit on the side of the track for 10 minutes waiting for the tow without having done a cool down lap. Even then it didn't melt the master, just the cruise control cable and a few zip ties.
(Not that I.m advocating skipping the heat shield, it's just that in my experience it's not instant failure to go without it)
I had a "Roxanne" day.
Roxanne... You don't have to launch on the red light!
Oh well I can't believe I hit 6 red lights today. I had a great time anyway, I think 12.72 is my best time yet. For some reason I was all happy about running 108, forgot that I have done 109 before. The car feels great, if I can just stop running red lights. There a moment of disappointment when you see the red light that runs through your body, I must hesitate a little when it happens. This is what a 12 second engine bay looks like, H8Rs.
I don't think he's spinning to 7200 but 7000 which would bring it to 109, and if his tach is a couple hundo optimistic like most of them are, that would put it about his trap speed, but I'll shut up now and let him answer the question because I'm just guessing here
Son, Also, do you have any logs of your recent runs? I am amazed at how fast your shifts seem to be ... ARE ... on the videos. Or can you tell me the time from Clutch in to Clutch out OR Throttle off to Throttle on?
and if his tach is a couple hundo optimistic like most of them are, but I'll shut up now and let him answer the question because I'm just guessing here
100% accurate, as I have said before, heed the words of 18psi, "The Prophet."
I try to shift at 7000 on my optimistic tach, which is 6800 on my log. Also it was mentioned long in my build thread when I was porting my first wastegate. My bung hole is not gaped as wide as some folks on here, I am a tight ***. That is why I short shift and don't port my wastegate big enough.
We will in a couple of days if I don't get rained out. By the way aren't some of these high dollar EFR guys supposed to "come out" and show me that they are a little bit faster? I mean I would like to think I could go cast stainless/EFR some day, but it really would need to be faster
03-16-2017, 12:51 AM
0
basically 
