Help and advice

[cpisteve]

I am considering buying a F500/600 for club racing. What should I look for, 493,494,593,or 600? Thanks

[cory mcleod]

Steve,

A lot depends on your budget and if you want to autocross, just have fun on the track or win the Runoffs. There is consensus that the 593 and 600 are the fastest road racing packages in the class, but strong disagreement over which of those has an advantage. If you are interested in the 2-stroke/CVT drive train there is a lot of great info at f500.us.

Cory

[clint]

I am considering buying a F500/600 for club racing. What should I look for, 493,494,593,or 600? Thanks

I've been in the class since late 1997 and I've driven both packages. If you're wanting to do autocross don't waste your time with the MC package. It's not going to keep up with the two stroke guys on any course. If you're wanting to go road racing there's two ways to do it. 1) You buy a car to race or 2) You buy a car to win with. There's a lot of difference in the two choices no matter what engine package you go with.

If you like to tune and tinker with the engine package then I would strongly suggest the two-stroke package. It has several variables that you'll be able to tune (A lot of different combinations with the clutches alone). The carbs, pipe length, drive clutch and driven clutch. The drive clutch has a spring with weights and the secondary has a spring with a helix. Between the two clutches you'll have control over any aspect you'd like. Note: The two stroke tends to crack the frame around the engine bay so you'll need to weld that area up over the winter each year.

If you're like me I prefer the MC package. I don't have to touch the engine for tuning and the engine lasts around three times longer than the two-stroke from what I've experienced as well as the other 7 cars we've built has experienced.

I have borrowed some information from another website that will allow you to see what another guy that was looking into the class found out. I have put my changes in Bold that differs from his.

Bill Johnson wrote:

These are the figures I've received thus far from multiple races. Can anyone verify if these numbers are correct? I asked for what it takes to stay up front and these are the answers I received.

Tires 850.00 mounted and balanced. Will last full qual and full race then they fall off.
Drive chain 130.00 6 races
Brake pads 200.00 6 races
Rod end replacement 800.00 24 races
Brake rotor replacement 350.00 16 races
Seat belts 275.00 avg every 5 years

MC Motor: 2908.00 to 4908.00 initial cost
Four stroke professional built 2500.00 (plus 600 core)
Four stroke on ebay 1000.00 avg (will be 98% of a rebuilt motor compression if its under 6000 miles)
Header and muffler 700.00
Oil Pan 700.00
Power commander 300.00 https://www.amazon.com/s/ref=nb_sb_noss ... +commander
Auto tune for power commander 228.00 https://www.amazon.com/s/ref=sr_st_rele ... nceblender
oil change 30.00 every four races (7.50 per races avg)
Motor will have acceptable compression after 24 races (Need verification, seems high) 24 races is on the upper end


Two stroke: Intitial cost 5246.00 to 5946.00 (2300 & 3000 motor plus 2446 clutching,pipe,carbs)
Professional built motor 3500.00 I assume older motors will be a little cheaper http://www.ebay.com/itm/2013-2016-Ski-D ... K6&vxp=mtr
Ebay motor 850 avg
Top end rebuild 800.00 to 1200.00
Crank rebuild 650.00
Ebay total 2700.00
Driven clutch 495.00 http://www.wahlracing.com/Arctic-Revers ... lutch.html 8 race weekends
Drive clutch 549.00 http://www.wahlracing.com/Polaris-Prima ... tches.html 8 Race weekends
Clutch belt 119.00 http://www.wahlracing.com/Ultimax-XS-Belts.html 2 race weekends
Weights 150 avg http://www.wahlracing.com/Clutching-Clutch-Weights/ 3 years or 24 races
Spring 35.00 http://www.wahlracing.com/Polaris-Drive-Springs.html
Spring 28.00 http://www.wahlracing.com/Arctic-Driven-Springs.html
Y pipe and expansion pipe 650 to 800.00
Carbs 270.00 http://www.wahlracing.com/Mikuni-VM-Carburetors.html
Oil 25.00 per race (assuming 15 gallons of fuel is used)
Motor will have acceptable compression after 8 races (this is what I am currently seeing with my two stroke motor also)