I'm converting my 03 gsxr750 powered pulling tractor over to methanol and can't find to much info on what kind of engine oil to run and how often to change it. Hoping some mini sprint guys could clue me in. I'm running a Kevlar clutch if it matters. Also wondering being the engine only pulls for +- 30 secs under full power if I should remove the small oil cooler the heat up oil better to burn off any methanol that gets into the oil. I'm tuning the engine with a Yoshi box and wideband O2 and data logger. so hopefully not a lot of methanol in oil. Any help would b great! Cory
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left

You need to look around and find some 40 to 50 lbs per hr injectors. You need a larger fuel pump and non paper fuel filter. A dyno jet to set AFR at about 4.5 to 5 to one under power. probably be running between 45 to 60 psi. We don't have clutch problems. I like man made oil, not too heavy if you aren't going to spend much time with warm up. Don't block off your cooler lines just run hose from one side to the other, or short cut it. The oil galley is restricted inside motor and must be drilled out if you want to block off cooler lines all together.

Honest Dad himself

I got the right injectors from Ryan Greth billet rail SS filters and tuning computer so I should be good there. The oil cooler is the type that looks like an aluminum can about 3" diam. bolted to block with 1/2" coolant line going in and out of. Should I leave it alone or disconnect the coolant lines? For oil i ran 10-40w Amsoil motorcycle syn. last year on gas and have some left could i run that again this year with alcohol? I also read somewhere that a guy was running his oil for a couple races then dumped it out and heated it up on camping stove to burn off the alcohols then reran it. Would that work as i don't want to have to toss $60 worth of oil every few weeks?
Sorry for so many questions!
I know for drag race car engines they run a vacuum valve to lean engine at idle and bring engine temp to 200 before the run could i do that kind of thing but tune a lean spot just off idle to create some heat quickly before a run?

LEFT

You got it, remember lean anyplace else turns it into a foundry real quick. Can't get any better oil than that. With electronin inj. deluted oil should not be a problem. If the oil temp get up to 220 or so methanol will boil off. If anything the cooler should bring the temp up qicker. We have used use a small heating coil to raise temp while we wait to run both in water and in dry sump tank. We changed oil about every 3rd or 4th race back when we could get a motor to last that long.

Do tractor pullers have to turn left also?

Honest Dad himself

Thanks for your help!
We only turn left off the end of some tracks. I use to run a Wissota super before I married and had kids!

LEFT

One of the best ways I know to put an end to a racing career. Probably worth it, lots of fringe benefits.

Honest Dad himself

1 more question I'm using a bosch 044 pump similar to walbaro but has 1/2" inlet. On the outlet side it has a banjo stud with a check valve should I run it that way so the methanol stays in the rail when off or should I use the 6an fitting on the pump with no check valve. Thanks Cory

Cory

If you are going to be off a month or so drain the methanol, if you have a purge tank run a little gas through it then I like to blow out and shoot a little Marvel Mystery oil or WD40 in the injector rails. Most new aluminum rails are anodized now and all the extra work may not be required. But nothing worse than getting ready to fire her up and finding all this crud and white powder in your fuel system clogging things up. "A thorn of experience is worth a wilderness of warnings."

I have no idea about the banjo fitting. I like "an" fittings as opposed to hose clamps when I have methanol at 70 psi running between my legs.

Honest Dad himself

Everything in the system is stainless steel or anodized alum. it will never sit more than 2 weeks between runs and I will prob. start once a week. the banjo bolt is the same as any car brake fitting with crush washers on each side for sealing and has an output of 6an male. The biggest concern is if I should run the check valve on the output side of the pump to keep the rail and injectors full of methanol when the engine is not running limiting the amount of air in the system adding to the corrosion/white powder developing in the system. Cory

Cory

We don't run a check valve,. but I see no problems using one , it should make it start a little quicker, ours probably is a bit slow at times but I like to think that we are building oil pres. You should be good to go. Start out rich and lean as you go. The nice thing about methanol is that power does not fall off when it is too rich up to 20% or so over schoc. But you get it just a little lean and you have a real problem.

Honest Dad himself