http://forum.scooterforum.net/forum Engine modifications and repairs en Mon, 06 Sep 2010 10:05:14 GMT vBulletin 60 http://forum.scooterforum.net/forum/styles/stnet/images/misc/rss.jpg http://forum.scooterforum.net/forum http://forum.scooterforum.net/forum/f95/hpi-2007-question-192197/ Sat, 04 Sep 2010 12:22:38 GMT Hi everyone after a long break I'm back working on scooters again.

Ive assembled an engine for road use with a Stage 6 racing cylinder.
After assembling the engine it starts fine but there is no power at all, ive tried all different jetting setups for my 28mm carb. But i think my problem might be the ignition timing.

Ive posted a picture of my current timing setup. At this position my piston was at TDC,
heres a picture below.


Can someone tell me which timing mark to use and which side the left or the right? and am I using the corrent mark on the rotor. ]]> Engine modifications and repairs Eoin70 http://forum.scooterforum.net/forum/f95/hpi-2007-question-192197/ http://forum.scooterforum.net/forum/f95/problem-malossi-2005-overrange-192127/ Thu, 02 Sep 2010 21:41:27 GMT hello , just wondering if anyone can help my brother has an italjet dragster with minarelli engine and i have just put a sport setup in it consisting of stage6 street race 70 - rms full circle crank- tm24 carb - stage6 intake system - malossi gears - MVT MILLENIUM ignition and as he had a malossi... hello , just wondering if anyone can help my brother has an italjet dragster with minarelli engine and i have just put a sport setup in it consisting of stage6 street race 70 - rms full circle crank- tm24 carb - stage6 intake system - malossi gears - MVT MILLENIUM ignition and as he had a malossi overrange kit with delta clutch /wing bell lying around from his other bike so we fitted it and i set it up to get the best setting i could however its made the bike worst on top end and a tiny bit worst on bottom end as well i couldnt see what the problem was and its surpised me seeing as all that was in there before was totaly stock transmission , also ive had to miss out the washer the sits in the kick starter cog in front of the front pullyas the overrange didnt leave enough thread to get the crank bolt on , aswell its like the clutch is'nt engauging fully as only the middle pad of th pad is worn but it pulls off fine not over reving or anything and i have adjusted the delta clutch make the clutch bite at lower rpm but the pads still only wearing in the middle , i'd really be greatfull if anyone could help me as ive had to go back to stock transmission because of the problems , also all the malossi transmission is brand new so theres no problems with worn parts etc .

thanks
nick ]]> Engine modifications and repairs ManstonDragster http://forum.scooterforum.net/forum/f95/problem-malossi-2005-overrange-192127/ http://forum.scooterforum.net/forum/f95/ecu-programming-192115/ Thu, 02 Sep 2010 18:01:22 GMT Hello, i'm new at this site, and i'm not good at English, so i have Peugeot TSDI and Aprilia SR ditech 2002. i need to program my ECU on Peugeot, because it don't work on low RPMS, acceleration is good. When i take SR ECU to Peugeot, it works good, but don't show RPM, so i need to program Peugeot ECU, for a good work, may be i need to update software? or may be i can make that show RPM'S from SR ECU? How much cost that tools? and where I can buy it? ]]> Engine modifications and repairs Juniors http://forum.scooterforum.net/forum/f95/ecu-programming-192115/ http://forum.scooterforum.net/forum/f95/bad-fitment-192070/ Wed, 01 Sep 2010 18:32:18 GMT i have a metrakit pro race pipe on a pro race cylinder what i thought was gunna be a perfect fitment turned out, well poo both for piaggio as i have a piaggio block fitted it into the frame today and tryed the exhaust first of all the subframe was in the way maniged to get it on after... i have a metrakit pro race pipe on a pro race cylinder
what i thought was gunna be a perfect fitment turned out, well poo

both for piaggio as i have a piaggio block
fitted it into the frame today and tryed the exhaust

first of all the subframe was in the way
maniged to get it on after abit of stressfull wiggling

but
its on a angle (got pics)

there is a huge gap between the bracket and case
and a small gap between the tyre and pipe :S

somone help :)





]]> Engine modifications and repairs ma11b http://forum.scooterforum.net/forum/f95/bad-fitment-192070/ http://forum.scooterforum.net/forum/f95/rejetting-vmoto-monza-suit-performance-192001/ Tue, 31 Aug 2010 00:41:37 GMT Hi, any help would be orsum. I purchased a vmoto monza 49cc scooter(yamaha clone). I have an airsal T6 racing 70cc bore kit,carbon reed intake valve, variator kit with new belt and lighter rollers, tecnigas Next-r performance exhaust, plus unrestricted cdi and iridium spark plug. Question... Hi, any help would be orsum. I purchased a vmoto monza 49cc scooter(yamaha clone). I have an airsal T6 racing 70cc bore kit,carbon reed intake valve, variator kit with new belt and lighter rollers, tecnigas Next-r performance exhaust, plus unrestricted cdi and iridium spark plug.

Question is...i need to know a recommended size for rejetting the standard carb(mikuni)mainjet to suit.

Havnt installed any of this yet, need some recommendations for correct order of fitment / tuning.

Any help appreciated

Cheers -:- ]]> Engine modifications and repairs monzamash http://forum.scooterforum.net/forum/f95/rejetting-vmoto-monza-suit-performance-192001/ http://forum.scooterforum.net/forum/f95/honda-dio-cdi-derestriction-191879/ Fri, 27 Aug 2010 17:56:17 GMT Hi! I have got a honda dio ! i am new to this scooter stuff(earlier had only dirtbikes) Can someone explain me haw can you derestrict honda dio ci692 cdi? Hi! I have got a honda dio !
i am new to this scooter stuff(earlier had only dirtbikes)
Can someone explain me haw can you derestrict honda dio ci692 cdi? ]]> Engine modifications and repairs badbone http://forum.scooterforum.net/forum/f95/honda-dio-cdi-derestriction-191879/ http://forum.scooterforum.net/forum/f95/clutch-honda-dio-191877/ Fri, 27 Aug 2010 17:52:35 GMT Hi! I have got a honda dio ! i am new to this scooter stuff(earlier had only dirtbikes) Could you explain to me about the belt and clutch spring tuning and replacment? Hi! I have got a honda dio !
i am new to this scooter stuff(earlier had only dirtbikes)
Could you explain to me about the belt and clutch spring tuning and replacment? ]]> Engine modifications and repairs badbone http://forum.scooterforum.net/forum/f95/clutch-honda-dio-191877/ http://forum.scooterforum.net/forum/f95/honda-dio-rollers-191876/ Fri, 27 Aug 2010 17:50:37 GMT Hi! I have got a honda dio ! i am new to this scooter stuff(earlier had only dirtbikes) Could you explain me everything about roller replacement, like how small or big rollers can you put, will the belt be sliping if i put some kind of wrong size rollers, what do mixed rollers give?Now i have got... Hi! I have got a honda dio !
i am new to this scooter stuff(earlier had only dirtbikes)
Could you explain me everything about roller replacement, like how small or big rollers can you put, will the belt be sliping if i put some kind of wrong size rollers, what do mixed rollers give?Now i have got 16x13 8.5 g
Thanks ]]> Engine modifications and repairs badbone http://forum.scooterforum.net/forum/f95/honda-dio-rollers-191876/ http://forum.scooterforum.net/forum/f95/wirgrt-pipe-exhaust-sweden-191690/ Mon, 23 Aug 2010 09:25:45 GMT Hey is that I should start and run your own business in the fall / spring in conjunction with a course in school and young entrepreneurs. So I'm going to make exhaust pipes to various bikes and setups.
shall define a pipe to am6/derbi well suited to sports setups. then do some different exhaust to worse hyper bikes. then maybe make a few copies of the exhaust pipes like metrakit prorace. Will also make exhaust pipes for scooters of interest exists. I have a subcontractor of the muffler so the exhaust pipes will have silencers. Will not be sold abroad with a silencer if I do not get enough orders so I can keep prices low. Will also take off fee of exhaust pipes and I mean that you pay a certain price when you order the exhaust pipes and then pay the rest when you get them so I can not stand by the mass of unsold exhaust pipes that I have spend a lot of expenses for materials. I will also make a website

For example, provide a copy of metrakit prorace tube with a silencer for about 212euro ]]> Engine modifications and repairs Wirgart http://forum.scooterforum.net/forum/f95/wirgrt-pipe-exhaust-sweden-191690/ http://forum.scooterforum.net/forum/f95/where-get-mhr-black-springs-original-clutch-191447/ Mon, 16 Aug 2010 17:52:57 GMT I cant find them anywhere. ty I cant find them anywhere. ty ]]> Engine modifications and repairs Connah http://forum.scooterforum.net/forum/f95/where-get-mhr-black-springs-original-clutch-191447/ http://forum.scooterforum.net/forum/f95/anyone-ever-had-problem-aerox-belt-191383/ Sat, 14 Aug 2010 19:14:27 GMT The scooter isnt moving unless the back wheel is lifted in the air, Has anyone ever had a problem like this withe the drive belt? Thankyou The scooter isnt moving unless the back wheel is lifted in the air, Has anyone ever had a problem like this withe the drive belt? Thankyou ]]> Engine modifications and repairs Connah http://forum.scooterforum.net/forum/f95/anyone-ever-had-problem-aerox-belt-191383/ http://forum.scooterforum.net/forum/f95/can-anyone-help-all-opinions-ill-grateful-191282/ Wed, 11 Aug 2010 19:56:50 GMT 1st off scooter setup Metrakit Prorace 2, Dopper 12mm Race Crank, 24mm OKO Carb, Polini Hi-speed variator, Pm Tuning clutch, And Standard clutch. Basically whats happening is the scooter is revving to around 4000rpm to 7000rpm depending on what rollers and clutch springs, I tried both of... 1st off scooter setup

Metrakit Prorace 2,
Dopper 12mm Race Crank,
24mm OKO Carb,
Polini Hi-speed variator,
Pm Tuning clutch, And Standard clutch.

Basically whats happening is the scooter is revving to around 4000rpm to 7000rpm depending on what rollers and clutch springs, I tried both of these from 2.5grams rollers to 7 gram rollers, Standard clutch springs to Hard ones. The scooter either revs loads and does nothing or revs a bit and goes to 20mph or the clutch engages instantly and goes to 20mph, Its really slow getting to 20mph, On a slight hill it will struggle alot. The scooter has no power at all, If u lift the scooter wheel up it revs and runs OK reaching a high speed. The only thing i havent changed is the jets but before i order loads, Do they make that much difference ]]> Engine modifications and repairs Connah http://forum.scooterforum.net/forum/f95/can-anyone-help-all-opinions-ill-grateful-191282/ http://forum.scooterforum.net/forum/f95/best-spring-combinations-70cc-mina-kits-191149/ Sat, 07 Aug 2010 18:24:22 GMT experts, based on your experiences, what spring combinations (clutch and center springs) can you advice for track and sprint use on a minarelli 70cc kit? experts,

based on your experiences, what spring combinations (clutch and center springs) can you advice for track and sprint use on a minarelli 70cc kit? ]]> Engine modifications and repairs nitrousx http://forum.scooterforum.net/forum/f95/best-spring-combinations-70cc-mina-kits-191149/