Spitfire raceway first ever 10 second run
#31
I think you'll lose more power in the crucial first 200m through cold oil over heatsoak. I usually knock nearly a second off my times over the course of the day but my terminals keep coming down. I've noticed it on some of Andy Forrest's drag days too. Just my observation though. 9
Just have a run trying it, get your tyres up to 35psi too. Don't worry about slight wheelspin as when it hooks up the revs will be higher from it.
Just have a run trying it, get your tyres up to 35psi too. Don't worry about slight wheelspin as when it hooks up the revs will be higher from it.
Heat soak is regarding water temperatures and heating your inlet system. What is the point in having a good intercooler system then raising the inlet air temperature with a hot I let manifold etc.
35 psi? That's crazy pressures. I doubt that would be effective for me. You run less pressure and launch at higher rpm...
#32
Scooby Regular
I'm running 5 30 oil, and bare in mind Matt the oil in the engine stays at 60 degrees minimum. By the time I have staged etc it is up to 80 anyway.
Heat soak is regarding water temperatures and heating your inlet system. What is the point in having a good intercooler system then raising the inlet air temperature with a hot I let manifold etc.
35 psi? That's crazy pressures. I doubt that would be effective for me. You run less pressure and launch at higher rpm...
Heat soak is regarding water temperatures and heating your inlet system. What is the point in having a good intercooler system then raising the inlet air temperature with a hot I let manifold etc.
35 psi? That's crazy pressures. I doubt that would be effective for me. You run less pressure and launch at higher rpm...
I mean when I run both my oil and water are red hot obviously but my ET's are lower for it, hot oil seems to improve acceleration drastically whilst the hotter water and or heatsoak only seems to have a small penalty. Ideally you want red hot oil, cold water. TBH I've not queued for 25 minutes until staging so maybe just turn the ignition on 5 mins from the line. It's not crucial to try though, protecting your engine from det has to be paramount.
I can't remember where I read it but someone once stated that 5 speeds mainly fail when the tranny oil is stupidly hot and torque has increased about 50lbft!
Last edited by RS_Matt; 08 May 2016 at 07:33 PM.
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