Hey guys, not trying to bore everyone with the same ol post. I did a search and did'nt find what i was looking for with simmilar mods. I just put my TM45 on my DS and it does'nt run as strong as it did with the stk carb(175 main jet). I'm running a MBRP full race exhaust and clamp-on K&N filter. Ran great with the stk carb. The TM45 is set up with a 32.5 pilot(i think), 150 main, #96 needle all the way up(clip on bottom notch). I believe my pilot is a size or two too small as i had to back the idle mixture screw out 5-6 turns. I know about the bog of the TM45, but even from a decent roll, it does'nt pull as hard as it did with the stk carb. Is the 150 main too small? I'm not sure where everyone it at with the main with a pipe and clamp-on. The manual is geared toward Harleys. Did i goof pulling the needle up all the way? Help...

 

Surely SOMEBODY is running the TM45 w/o cams and piston???

 

i am but i havent even ridden it since i put the carb on. Still has sandpaddles on it and been too lazy to change them, haha. I will tomorrow probably and let you know how it goes. I believe mine has the 150 mainjet too. I think i might order a 152.5 and a 155 just to be safe. Sean

 

Well first off youneed a new CDI before you will notice anything, You can't get into the rpm range that carb exells at. Also your clip should be in the middle position no the bottom. Air screw at 2 turns out. Then try it again. You will notice a difference also you need to get the 15 sprocket up front. Once you get the sprocket and cdi it will become a wheelie monster! Also run the carb mount filter. You may be running to rich if you are running the stock air box with the lid on.

 

The cdi should be here tomorrow. I would think it should pull harder til the limiter than the stk carb, but it is'nt. IF the TM45 does'nt pull better than the stk carb til past 7500, then it will be slower in most any type of racing(avg hp). I know i won't fully realize the benifits of the carb til the cdi, but it should'nt be worse! I put the needle all the way up because the searches i've done mentioned that most really needed a richer(#95) needle for better midrange. I was gonna try to drop it and see what that does tomorrow night. Mixture screw set at 2 turns and it idles irratic. My first post, i said maybe the pilot was too lean, i meant it may be too rich(thus more turns out on the mixture screw). I have a 15 and a 14T sprocket that should be here tomorrow as well, though the gearing change would benifit both carbs. I'm running the carb mount already. I'm running rich by looking at the plug, though i did'nt pull it right after a full throttle pass.
Thanks for the info...

 

Hey Bird, a friend and I have the exact same set up (basicaly woods stage 1). On my TM 45 I have the #96 needle with the clip in the middle running 155 main, 42 pilot, 2 1/2 turns out, filter in the airbox w/ lid off. My friend has the same setup up except a 97 needle with the clip in the 4th notch down and a 165 main. Our plugs always look the same and we are always 50/50 as far as winning.

If you turn up the idle speed to 1000 rpm and the adjust the idle mixture screw in until it changes rpm and then out until it changes rpm, then set it in the middle between the two.

Now you can play with the needle until it works for you, same with the main jet.

Good luck

 

yeah, put the needle where it feels the best, just try each position until you find the best place. all the way up with no porting or cam work does sound too high, I run the 95 needle on the 5th but I got plenty of head work.

 

hey bird,

i am running a TM45 on a fairly stock bike riding from sea level to about 3000 ft and i finaly got it jetted right. i am running a 155 main a 40 pilot and a 70 power jet for the accelorator pump. it is quick now. i have the standard needle for the TM and it is set the same as it was from the factory. i have a woods pipe and a airbox mounted K&N. i am going to be putting an MBRP pipe on this weekend.

 

mustang where did you get your carb from? do you know what needle it uses and does it make that much of a difference with the excellerator activated and what does the power jet do?

 

i got the carb from a buddy of mine here in town he bought it from woods and when he got it the thumb throttle was to stiff for him do to arthritus in his hand. so it should be the stock needle from woods what the is i don't exactly know. the power jet is the jet that the accelorator pump uses. if you look down the throat of the carb you can see the end of the jet hanging down into the throat. they come from wood with a 70 jet installed. some guys told me to drop that down to a 50 but i left it at 70 and just backed off the ammout of fuel the pump gave it.

i hope this helps some if i can help anymore let me know