@Shadez: Never ridden a UG3 so cant really say. Santa will know better. I do not think much of the engine architecture has changed. For all I know the gearing has been made shorter, courtesy 17" alloys and a 44T rear. A pulsar's engine is more of low end than screaming topend. So even if u change to a 200 block all advantages will be contained in the low-end and midrange. As for oils, I was using 300V was damn good. Also used 5100, its a good oil. Dont expect anything much with just an exhaust change and stuff. Do a complete check and overhaul if u want to that should help.

@me is rossi: I was using the BS29 carb and the 120 jet with a 40T rear. Nothing else.

The valve sizes of my 150V1 was almost same as the 200's valve, so never messed with all that. IIRC the valve size of UG3s are much smaller. Go to ASC's and check on their service manual.

@Insane: Ur damn right. All that wealth of knowledge is permanently lost!

ok, so if i go for a p200 piston kit on my 180 what other parts should be changed like clutch plates, chain set, crank, etc? and does the bike perform better with this mod? especially top end.

The only way to increase top end is by changing the gearing, which means sprocketting. With stock gearing any mod that can be achieved will be in terms of pickup and torque. No other changes necessary, although be prepared to replace ur clutch plates more frequently as they are not designed to take the extra torque.

@Ap. If just get a sprocket mod [as per the norm i.e. lesser teeth more mid-range torque and initial pick up;more teeth better top end; wait a minute is it the other way round!?]+ my stock 180 ug3 engine + i already have a k&n, upjetting will be another small mod=
Walllah!! i increase my top-end??!??!?!

BS29 carb!!!! kahaan se mila??? where can i get it in mumbai (preferably in thane)

Some questions here....

I was mulling over the sprocket mod, i was wondering if i can pre-determine the top-whack; AS in; if add 1-teeth i get a jump from 128-130; ad 2 i get 132-134..you know what i mean?? Again increasing top-end would require me to get a custom sprocket, although bhuvans shop in pune was ready to do it in a couple of hours for me; but nothing personel here, but i was getting a feeling i will be ROBBED here For sure; Coz, i asked hime 12000 color temp Bulb for my friends HID, he quoted 2.5k!!!!! yep, u read that right...I will need a custom sprocketer', i have seen a couple of shops in grant road, land of robbers... btw do i also change the correspondin sprocket in the front and what about the chain??

and if dont hit that (new & improved) 135 km/hr mark too often, do still end up frying my clutch plates+pressure plates?? heating issues?? it already gets bloddy hot just after cruising at normal 100 pretty soon...

OT
i had called up venu sir sometime ago, for freecounselling, man did i bore him...spoke in kannada with him felt great talking to him man, wahaan baithe baithe prob solve!!! hats off man!

alll p180-200 use mikuni bs29 carb....
sprocket mods are simple but fun,but keep in mind that bigger front ,shorter rear sprockets make gearing tall,
had been experimenting with these(kept a slightly used chain for these),
you can find direct fit sprockets for pulsars,
eg 14t--discover,
15t--normal,
16t--rx135 5s(teeth pitch may differ)
so are the rear,older versions used 42 teeth,now they use 44 t...
but keep in mind that max usable power from a pulsar is produced between 6kto 7.5(apr).taller gearing may lead to few more km per liter but top whack will not be much impressive.(no juice at higher revs,wind Resistance)
keeping meter errors apart pulsars take forever to reach 110 or so..
i am running 14f/44 rear,r15 zapper(17") at rear,bike is pretty short geared and topend is just 105,but then i can smoke every bike in city,
and wheelies are added bonus.......

guys, I have decided to install the 200 bore piston kit on my bike. Doing it with my mechanic as the Bajaj SC guys refused to do it. Will keep you posted. Thanks for all the help

Btw,, the Bajaj SC guys have charged 1600 for opening up the engine and assembling it back Not in a position to raise a hue and cry as my bike has to come back the same way it entered the showroom

@ Ap,

one small doubt bro. Can the 200 bore piston set be fit into the classic 180? I remember reading your post saying santa had done the same. But I have a doubt, the classic is a single spark plug while the 200 is a twin spark plugs. Won't that be a problem?

I'm asking because my friends 180 classic also seized.

^^All the best, make sure u have the proper valve pockets on ur piston or u will damage ur piston, valves head etc. Also get a new cam tensioner. It requires some jugaad to fit and run properly. U get it and try fitting it. U will understand! Am sure u will enjoy it!

EDIT: Santa did it on his P180V1 man. Anyways u can use the 200 bore piston kit on the classic too. No issues, I think. The twin spark, single spark issue is only in the head, not on the bore+piston.

thanks man,
BTW, pardon my ignorance. some gyaan on the cam tensioner please

Get the 200 bore+piston, get the 200 cam tensioner and try fixing it. U can see the problem. The cam tensioner's length will be shorter. Need some welding. U will not understand the extent if I explain it. U will need to see it visually. All the best anyways!

Thanks ap,

will keep you posted on my bike's surgery

Cheers

most imp . U ll need to make the pocket in the head bigger by 3.5 mm totally . Else the piston ll hit the head . Machining reqd in the head. Santa
________
Park Royal 1 Prathumnak Pattaya

Sorry sir, forgot!!!

yes it is direct fit,do it...
bring that beast to life,it will be more hooligan then before.
it doesn't needs piston pockets,afaik the valves used in classics have bit smaller dia..later on you can try experimenting with engine pressure as it will be more then stock p200.

thanks for the inputs guys