Personally, I think you should trade someone for a HSR42mm. It is exactly like your 45mm but a smaller bore size, BUT it will get you alot better bottom end,and great mid/top range also. On a stock engine, I think this carb is faster. When you go to big cams,and high compression, then and only then will the 45mm have the advantage(maybe).


The 42mm will be easier to "tune" cause thier is MORE air velocity,so that will make the lower rpms easier to jet.



Anyway, if you can fing a person that has a 42,and has gone to a stage 2 or 3, then I am sure they would JUMP at a chance to trade you.


But in the meantime tell us your Elevation, and carb settings(main,Pilot,and needle position). ITs time to get your hands dirty,and start learning how to tune your machine!!![img]i/expressions/face-icon-small-happy.gif[/img] Dont worry, everyone hear in the bomb forum are very patient(they were with me)[img]i/expressions/face-icon-small-wink.gif[/img]






Bigger.

 

Sandman is right and Bigger has a very valid point. It might come down to what I am afflicted with... I call it a personality flaw. Even if my bomb destroyed 98.3% of everything it went up against, it still wouldn't be enough. I have to fight the urge to dump more hard earned money into it. As I get older though, the condition seems to subside. In short, if you think that you'll do any mods at all, stay with your 45. It your completely done, go back your stock carb and enjoy the machine for what it is.

I was like you growing up.... not a lot of experience.

I had no father, and mom wasn't a genious when it came to mechanical things. Dove in head first with the attitude that I can always put it back the way it was before I cheesed it up. I learned, what seemed to be, every day. I asked the dumbass questions and watched what the other guys were going through. I promise, once you start doing your own thing, you'll never look back. The beautiful thing about a quad, is that there are extremely simple! No computers, no injection system, no endless looms of wire.

Take it one step at a time and ask the questions. Private message us and call some of us. That is the only way you'll learn. You'll find that if you treat the guys here well, there is nothing they won't do for you. Seems like just yesterday, I was asking bomb questions of Bigger, Sandman, Angry and Hightower. Now that I know the machine a little better, I'm able to help guys like yourself. A carb is a carb is a carb. Learn now when help is available, and you'll be helping others down the line.

Last but not least.... what the he!! is "Pit riding"????????

[img]i/expressions/face-icon-small-confused.gif[/img]

 

tryespinner i'm going to let you in on a little secert, all of us ask less than brilliant questions, we just pm someone about it instead of asking everyone. hightower probably could get you thru almost anything on the carb. the problem you are having is a low end lean bog, i now have it myself. ok try this put a 160 main jet cost 3-5 dollars a 147.5 pilot jet, and about 2 turns out on the air screw, there won't be much of a bottom lean bog. BUT you will be running rich most every where else, so your plugs will not last as long, the engine will run cooler. the power out of the hole will be awesome, those wheelies will come easier. are you ready for the draw back? the top end will suffer, by going back to the 150 main i picked up almost two quad lengths over my wifes ds, but again i also picked up some bottom bog if i slam the throttle. one thing to think about trye is what fun would it be if your quad was perfect right away, all this learning is the fun part, the kicking other quads butts is just a side effect, a very fun side affect i might add, and this might sound odd to you but, if i'm at the dunes and racing say at comp hill and i lose to a fast raptor, that gets me all excited again, what can i do next. something else to think about if you had got a honda 400 you would be looking at other issues on it, but you wouldn,t have all the power you do now and the suspension would be far short of the ds, but you know that now don't you[img]i/expressions/face-icon-small-smile.gif[/img]

 

Pit riding is something that those of us that don't live on edge of limitless sand do. We find trails into a local sand/gravel pit where the hills are man made from excavation of sand and gravel. Best part is short challenging hill climbs with steep approach angles and vertical lips to launch from.

 

SAndman, Have you had time to play around with your Needle positions?? The main jet should'nt effect your "bottom end" that much at all. If you haven't done it yet try the 150 with the needle all the way up! (clip on bottom).




Bigger.

 

I have the TM42 carb I recently got it dialed in just fine.. I run the 150 main and my needle is 2nd on the bottom. My hesitation is amost non existant. You can only notice it if you exploit it.
I ride in the 4000-6000 RPMS and I was thinking of getting the 45...

 

BINGO!!



Tyrespinner, here is your chance! Mudstud has tuned his 42mm in and has the experience know to tune in the 45mm. This should be a WIN WIN situation for the both of you! You will be Very happy with the performance of the 42mm,and mudstud has enough mods to see a gain out of the 45mm.





Way to go boys, problem solved!!



Biggerisbetter. NEXT![img]i/expressions/face-icon-small-happy.gif[/img]

 

I recently disabled the pump and it helped!! I dont miss the pump at all..

 

If you are interested in the TM42 carb I have PM me and we will see we can do.. Other wise good luck & hope you get it tuned.. ..

 

I have no bog that I can't work around. all I mean by the "bog" is the stumble that WILL occur if you stab the throttle as hard as you can off idle. since there is really never a need for this, and my rpm's are always above 2500 where the bog can never occur, it doesn't effect my riding. if somebody knows a trick to get rid of it, please share, I'm all ears, but I've tried every pilot from 25 to 55, and every needle # and needle position there is, and every combination of all the above. Maybe my aggressive porting is to blame for my stumble - but the top end I got is a good tradeoff for the infamous "bog" if you stab off idle, and the accelerator pump with twisty is not worth it to me because you really can work around it.