Bracket hot laps and e.t increase

[Jax]

I made it to the finals in 2 classes, but due to event time constraints, we had to run two elimination rounds behind each other without being able to cool the car down.

My e.t increased with approx. 0.20, and we think is due to the trans oil getting hotter and not allowing it to cool down and be consistent.

Any ideas about how you guys are facing these situations?

 

[qkcuda]

I always used to try and keep the temperature consistent, which may mean warming it up more in the early rounds. The other option is dialing up if you know it slows down with heat.

 

[dusterbing the peace]

I made it to the finals in 2 classes, but due to event time constraints, we had to run two elimination rounds behind each other without being able to cool the car down.

My e.t increased with approx. 0.20, and we think is due to the trans oil getting hotter and not allowing it to cool down and be consistent.

Any ideas about how you guys are facing these situations?

I keep the car hot for this reason...consistency wins more bracket races than ET does.

If you'd prefer to try and keep it cool, and occasionally experience this situation, then do some hot laps in test 'n tune sessions so you get an idea of the ET difference the added heat can make.

Last bit of consideration is to plumb in an electric oil pump (like the ones from Tilton) into your cooling circuit with check valves so you can circulate fluid with the car off.

 

[Jax]

Currently running the B&M super cooler... Any advises on better coolers ?

 

[ValiantRacing]

Currently running the B&M super cooler... Any advises on better coolers ?Run

Currently running the B&M super cooler... Any advises on better coolers ?

Run a fan on the cooler

 

[Jax]

Run a fan on the cooler

That is the case as well

 

[318willrun]

That happened to me on a re-run. 1/4 mile race but the tower stopped the clocks at the 1/8. Re-run, can't change the dial, same lanes. Guess what? I tree'd the guy on the first run, but I slowed about .15 on the re-run and he had an electric car, didn't matter to him. yep, he took the win LOL

 

[Demonracer]

As stated, consistency wins more bracket races than anything else. If you know you are going to have round robin runs later in the day, make sure that early in the day that your temps are up +/- 10* or less of what they will be later in the day.

 

[jaws]

Had a friend I raced with that had a car that liked being hot. Deadly consistent and ran its best when he staged at 200deg.

 

[Newbomb Turk]

You need to control engine temperature. Engine temperature affects oil temperature as well.

Oil retains heat longer than coolant.

I would never run an engine at 200 degrees (all circle track fans excluded) on gasoline. It’s too hot.

Unless you are trying to save the world by saving a few hydrocarbons you are pissing away power.

Obviously your tune up will be different when the engine is running at 200 verses say 160 degrees where it SHOULD be. Learn to tune it for cooler engine temperature.

Either way, you need to pick an operating temperature and stick with it.