Long Rod Todd

Thanks for the input guys. I did the longer swingarm and clutch also a TZ bearing on the PTO side of the crank and had the crank trued and re-welded (FAST Racing). I'll have to do the override tranny this winter.

I just finished up assembly of my new cub motor I need a starting place for jetting, mains,pilots and needles. I also need to know what heat range of plugs to run, and what would be a recommended front sprocket with the stock rear and 22'' tires. This is what I got. 4mm crank,68mm cub cylinders unported, coolhead 21cc domes, Boss racing intake 35mm pwk carbs,VF3 reeds, Shearer Inframes, timing kit, and lightened flywheel. I'm at sea level. I already have CEL needles and 55-50 pilots on order. Thanks in advance

I didn't know CPI pipes cost $1,000.00

Count me in...

I have a 4mm stroker with Passion racing porting. The rest of my mods are, dual 35mm Keihin carbs, Boss racing intake, K+N filters, +4 timing plate, lightened flywheel, V-Forces reeds, gyt-r ignition module, cool-head cut for stroker, and Shearer inframe pipes. I installed the reccomended main jets 145-165. I have #52 pilots installed and I believe cgl needles on the forth clip from the blunt end. This is the problem, full throttle at lower rpm the engine used to hesitate/misfire. I went up to 175 mains and the condition got better but never went away. Currently I have 190 mains installed and the problems is almost gone. I have checked the intake for air leaks with carb/brake cleaner none found. Is there any other suggestions main jets or do these strokers just love fuel. This is the first stroker that I've put together and I must say holy shit, this way faster than I thought it would be. Any other suggestions on the needles/pilots. I'm at sea level. Thanks

I bought all of the parts off of ebay. And then sold all of my stock stuff. At that time my bike had like 10hrs on it, all of the parts I sold went for more than expected.

I had to adjust the tension on the coil springs using the adjustable collars, to give it a little more clearance and to compensate for my weight. Here are some pics of the finished product. Front end view I put a 1 gallon paint can under it to give some sort of reference for height.

I guess I never really measured before and after but I would have to say when I compared the arms (It's been about a year since I did this) it looked like the 450 control arms where about 2 inches wider and about 1-1.5 inches farther forward. I still have the stock spindles/steering knuckles the 450 ball joints (tapered ends) fit right into the steering knuckle. As far as the tie rods go, I got +2 longer tie rods with a heim joint conversion (ebay).

Yeah, put one washer on each side of the control arm mount instead of the dust caps. The upper control arms are mounted the same as a stock 450 but they do come dam close to the shock, due to the larger diameter of the coil spring, made a world of difference. After I sold all of my stock parts the swap including the calipers cost me about $75? bucks not including the new powder coating. I compared width of the front suspension to my buddy's 700r and my shee is about 2 maybe 3 inches wider in the front and handles better than I ever expected.

Personally I like the 450 front end conversion. I have 450 front control arms, shocks and dual piston front brake calipers. I didn't modify the frame to fit the control arms, I modified the control arms to fit the frame. Front end pic This was a pic that was taken before the ride height was adjusted and the calipers had been installed.

I just sent that "letter" to about 20 other people. I heard about this 2 weeks ago and have been doing it since then.

Thanks for the suggestions. I'll pick up some more main jets and start lower. I think the problem with the plug color was due to running a little lean on the needle when breaking it in and not going full throttle that much (started with the needles in the 3rd clip from the top when first assembled). I guess I'm being a little to worried about running it lean after dumping some $$$ in to the motor.

I just installed a 4mm stroker, lightened flywheel (Boonman), Prodesign adjustable advance plate, v-force 2 reeds,boss racing intake manifold,cool head, Passion 12 port stroker porting, Shearer inframe pipes, 35mm PWK's with Dual K+N filters. The carbs are currently jetted with 52 pilots, DEK needles on the 5th clip position from the top, I recently moved up to 175 mains from the reccomended 160's (starting point). I have never ridden with these pipes before and seem to have a major bog at full throttle at lower rpm. The bog was worse when I had the 160 mains in. I am finally through with the break in period and was wondering if the main jets seemed a bit big considering most people seem to run 145-160 range. I didn't have much color on the plugs when using the 160's. This thing pulls like a mother on the top end and revs to the moon. Midrange throttle between 1/4-3/4 is all good. I'm at sea level with the temp between 40-60 degrees right now. So I need a sugestion on what to do with the main jets and also how much to advance my adjustable timing plate. Thanks

BansheeBrian gave me a good deal on some 35mm pwks. Also had new idle screws drop shipped to my door because the old ones were worn. Thanks Buddy

NICE INTAKES If anybody is going to upgrade to larger carbs these will add some HP.