[Tiger Paw]

I would think anybody using heavier viscosity oil should use a heater. Especially when air temp is low. We ran a large heat pad on the oil tank and a smallish pad on the pan. My Comp engine used 5-20w and was fastest with oil at 170-180° and coolant at 140° at launch.

This was in 2000-2003, with specific clearances and spun up to 9200. If this doesn't apply to your program, use what works for you.

[Tom Vaught]

Thank You Sirrotica and Tiger Paw for your additional VALUABLE information added to this thread.

Tom V.

[Stan Weiss]

I do not know about Mike and Eric's engine. But on some all aluminum engines running a tight lash cam in very cold weather you need to preheat the engine just so you are able to start it because of negative valve lash.

Stan

[S/st 54]

I have a question for Mike and Eric....A lot of The injected Nitro dragsters run cold fuel and when I say cold I mean below 0ish degrees Fahrenheit......do you guys run cold fuel on the boss bird?

We have done a bit of experimenting with Alcohol in the past with the pro mods with decent results.

Just wondering if you guys have with your nitro motor.

[Tom Vaught]

Originally Posted by S/st 54

I have a question for Mike and Eric....A lot of The injected Nitro dragsters run cold fuel and when I say cold I mean below 0ish degrees Fahrenheit......do you guys run cold fuel on the boss bird?

We have done a bit of experimenting with Alcohol in the past with the pro mods with decent results.

Just wondering if you guys have with your nitro motor.

Good Question, looking forward to reading about that side of it.
Tom V.

[Scott Roberts]

Originally Posted by Tiger Paw

I would think anybody using heavier viscosity oil should use a heater. Especially when air temp is low. We ran a large heat pad on the oil tank and a smallish pad on the pan. My Comp engine used 5-20w and was fastest with oil at 170-180° and coolant at 140° at launch.

This was in 2000-2003, with specific clearances and spun up to 9200. If this doesn't apply to your program, use what works for you.

I'm guessing they probably run more of a straight 70w oil.. Possibly Brad Penn if its still available..
Do you guys change your oil after a warm up in the pits Eric? I know it can get very diluted with fuel inveryshort order.. I actually used to save my old deluted oil in a vented and filtered drum and let the alcohol evaporate off... Running on a shoe string budget, it was nessasary..lol ran the same main bearings for 2 years..only issue I ever had was the plugger oil pump giving up on a start up.. We ran around 140psi..with .005 clearances on the mains and .oo4 on the rods.

[Tom Vaught]

Great Post, Thanks Scott for the additional info.
How long did it take for the alcohol to evaporate off?

Tom V.

[Tom Vaught]

Race Day, Race Day, Race Day! Put down some BIG NUMBERS Mike and Eric!
Have fun too!

Tom V.