172 engine build

hi, im looking for a runner 125 and i want to build up the engine and i was just wondering what kind of parts would be good for a easy 25 27bhp engine.. Bearing in mind i dont want it to blow up lol.. cheers

 

you want pretty much all the tuning parts available for the motor to gain that kind of power purely on parts. 22-24bhp is an acheivble figure, any more and you want to be looking at port work.

as with any tuning the reliability will suffer.

 

hmm on a gilera 125... i recon...
172
25m carb.polini inlet and reed block
malossi crank
malossi gearings
malossi varo
malossi belt
malossi torque driver
pm 59
and some porting
should get you 25-27bhp easy
also i think acceleration would be quick :msn1:

 

you seem to like malossi, go with the BGM 55mm crank, its cheaper.

 

lol dont like malossi just a good crank that just bangs in.. im sure 55m would need settings up correctly? true tho when its set up would make the bike a 183cc that would be sweet!

 

yh im looking for a 183 reliable which has wheelie acceleration and good top end.. what kind of spec would i belooking for?..

 

just listed it above but a 55m bgm crank :msn1:
172
25m carb.polini inlet and reed block
55m bgm crank
gear up kit
variator
kevlar belt
malossi torque driver
pm 59
and some porting

(EDIT oh and after about 24 bhp im sure reliablity goes down..... all i can say is fastlane had a 26bhp bike and was always braking down but he used it everyday....)

 

1x Gearbox (M) secondary Gilera Runner 125, Piaggio Skipper LX, Hex
1x Reed valve Polini -EVOLUTION- Piaggio, Gilera
1x Carb bgm PWK 28 mm
1x Exhaust -JOLLY MOTO- for 172cc Malossi LC Kit (Gilera Runner 125
1x Clutch (M) -DELTA- Piaggio - Gilera 125-180cc 2 stroke
1x Cylinder kit 172cm³ Malossi LC Piaggio - Gilera Maxi 2T LC
1x Belt (M) Piaggio Gilera 125-180cc 2 stroke
1x Variator kit (M) Piaggio - Gilera 125-180cc 2T
1x Crankshaft bgm EVOLUTION EVO 55 Piaggio-Gilera 125-180

about £900

 

expensive init :msn1: just buy a runner that has all of it done already for like £1200 lol

 

sounds alriteno that dear as i thought it would be lol.. what would you recommend polini 175 or malossi 172

 

the thing is if i buy a runner with it done then i dont know if it has bin ragged or not and how long the parts have been on there

 

malossi, better power.

 

yepo malossi, but u can be different and buy a polini... if your gettting it ported i duno if it would matter if it was malossi or polini? (waits for wobblys answer)

 

okk i thought they were.. i can fit it myself but the 55mm crank needs to be setup but i duno where from..theres a shop near me calld 2 wheels ahead i dunno if youve heard of em..

 

the crank dosnt need to be setup, you have tu use spacers for the barrel though.

the polini is an iron liner, therefore can be honed and re-bored but dosn't produce as much power as an alloy barrel.

 

well ill get a malossi one as ive had one before but fucked the barrel.. yh i meant like spacers but i doubnt i would get it right.. if i had it ported would it not be as reliable or would i need to do anything to keep it in good condition?.. do you know how much minor charges for porting? n is he good lol..

 

it depends on what you want doing really. yes minor's porting is damn good. porting will reduce the reliability of the bike.

 

but does it do alot of difference?.. i was looking on Abz'z zip 183 and i was looking at his spec is that good because there are so many different manifolds n carbs im confused :msn1: i need help

ported 172 kit
flowed casing
bgm 55 crank
malossi mhr vario (180 at the moment)
malossi delta clutch ( standered with blue springs and white contra spring)
malossi tourque driver
malossi secondary gear up
polin 180 belt (malossi when I fit the mhr vario)
malossi mhr striaght manifold
malossi mhr reedblock
malossi wavy disk
rear gilera runner caliper with malossi pads at the front original red
braided front brake hose
a custom paint job not sure what one
malossi 25ml carb with metal float boal
malossi e13 air filter
chrome modded pm59 with limited edtion titanuim can

 

well 28m will drink more fuel then a 25m carb lol depends what u want... and psn scooter told me straight inlet manifold arnt that good... somthing about at top speed they dont let in enough fuel...25m carb is a good carb... fastlane has a 25m carb and he is gettin 27.9bhp set up on psn dyno....

 

yh ive seen fastlanes bike on pics n its nice.. i cant get onto scooter center :rtfm: arghh!!