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peugeot speedfight 307 wrc acceleration problem!!!
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peugeot speedfight 307 wrc acceleration problem!!!
2 June 2009, 1:11 PM
 Edited by adz27 2 June 2009, 1:14 PM
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adz27
Joined 2 Jun 2009
7 posts
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hi all
i have got a peugeot speedfight 2 307 wrc and i have abit of a problem and hope someone can help.
i recently bought a gianelli sports exhaust which came with 6gram rollers and little red sports clutch springs,after all this was fitted the bike has never been the same.
as u pull away the acceleration is really slow for the first 4-5 seconds and then like sort of kicks in and go really fast but its just as it pulls away its really slow.
so i bought some lighter 4.4 gram rollers and put the original clutch springs back in and its still the same.
Also bought a new clutch but no different.
hope someone can come up with a solution
cheers adam
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peugeot speedfight 307 wrc acceleration problem!!!
3 June 2009, 3:30 AM
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steo
Joined 29 May 2009
115 posts
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hi adam im not an expert on every scoot out there but i think your going in the wrong direction with your ped, i'll assume its a carb model so firstly did you up-jet the carb as the sports exhaust will make the bike burn leaner? 2nd, put in a a grade colder spark plug to accommodate the modifications, 3rd, get yourself a sports air filter & bin the old one. 4th you should probably go with heavier rollers 7-8 grams, light rollers really only work on a sports variator otherwise they just make the scoot scream its head off without going anywhere. 5th if you can afford it then i'd buy a malossi or polini variator, you might get one 2nd hand on ebay. hope this helps.........happy motoring.
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peugeot speedfight 307 wrc acceleration problem!!!
3 June 2009, 11:31 AM
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adz27
Joined 2 Jun 2009
7 posts
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thanks alot for your help i will try some of these ideas
just one thing,i put my original 8grams rollers back in with my sports exhaust a while ago and it didnt even kick in like i said on my message it just kept going slow at like 10mph so put the 4.4gram rolllers back in and it worked but obviously its still taking that 4-5 seconds for it 2 kick in and go,i mean i really need it sorting out because when i come up 2 lights or juctions and i go to pull away it goes slow for 4-5 seconds and to me its abit dangerous with me going slow with oncoming traffic
thanks alot for your time and help
adam
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peugeot speedfight 307 wrc acceleration problem!!!
3 June 2009, 2:07 PM
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steo
Joined 29 May 2009
115 posts
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hi adam i take it you have the ped totally derestricted especially the variator? the reason you've no low down power is probably because of the standard jetting with the sports exhaust. whip out the plug & have a look at the colour of it. grey/white colour means its burning too lean, black is too much fuel so you want a nice golden brown. up-jet the main jet by 10% with the sports exhaust then if you get an air filter i would go up another 5%. you might have to go up in jet size untill you find the best setting for your ped to make it pull through the rev range, its all trial & error. let me know how you get on.
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peugeot speedfight 307 wrc acceleration problem!!!
9 June 2009, 10:53 PM
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adz27
Joined 2 Jun 2009
7 posts
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oryt there
i took my carb off yesterday and found that the standard main jet in my ped is a 50 so i went out and got a 60 and fitted it and now it is better but still not straight away acceleration,now its like 1-2 seconds so i thought ill go and swap it for a 70, anyway i got the 70 home and the ped wouldnt even pull away which made me bit annoyed so went back to the shop and got a 62, fitted the 62 and that was fine but when it kicks in it like splutters, i dont know weather to go back down to a 60 or try one of those malossi red sponges which go inside the air filter, what do u think???
cheers adam
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peugeot speedfight 307 wrc acceleration problem!!!
10 June 2009, 1:13 AM
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steo
Joined 29 May 2009
115 posts
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hi adam sorry to hear your ped is wrecking your head but that's what tuning is all about, trial & error. in my 1st thread i said to up-jet by 10% not 10 sizes so your main jet should be 55, also give your carb a good clean, if its spluttery in the low revs then your pilot jet (next to main jet) could be blocked. always look at the colour of your plug, that gives you the best indication of how well your bike is going, you may have fowled the plug so clean that also. put the 6 gram rollers back in & see how you get on, here's a tuning website that maybe of use to you http://www.tunemyscooter.com/50cc-tuning/peu......c-tuning-giude/ let me know how you get on.
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peugeot speedfight 307 wrc acceleration problem!!!
10 June 2009, 1:23 AM
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steo
Joined 29 May 2009
115 posts
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i gave you the wrong spelling in the web address so here's the right one http://www.tunemyscooter.com/50cc-tuning/peu......c-tuning-guide/
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peugeot speedfight 307 wrc acceleration problem!!!
19 July 2009, 11:21 PM
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adz27
Joined 2 Jun 2009
7 posts
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hi
im still in the same situation,its really annoying now i have changed the rollers/clutch springs/jets so many times and got nowere it is unreal, and i have got a malossi sponge filter in now and that doesnt seem to have made any difference either,ive come to a stand still
any more ideas???
cheers adam
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peugeot speedfight 307 wrc acceleration problem!!!
20 July 2009, 0:41 AM
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steo
Joined 29 May 2009
115 posts
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Hiya Adam, that is a pain in the neck. I checked up on one of the other scooter websites & a lot of similar complaints to yours boiled down to the sports exhaust. Some race exhausts don't give enough back pressure to the engine & as result you get bogged down in the low revs. Try putting the standard pipe back on & if no difference then do a compression test (150 psi) should be good compression.
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peugeot speedfight 307 wrc acceleration problem!!!
20 July 2009, 10:02 AM
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adz27
Joined 2 Jun 2009
7 posts
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hi,cheers for your time
ive spoke to some1 else with this same problem on a peugeot speedfight and he had a technigas exhuast on his scoot,ive put it back to the original exhaust a few times and it pulls away at a steady pace and stays at a steady pace untill it reaches 37mph and doesnt go any faster, which is a real head ache because i want it 2 go faster,i cant win with the bike at all and is really annoying,what do u mean by the compression test?
cheers adam
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peugeot speedfight 307 wrc acceleration problem!!!
20 July 2009, 1:50 PM
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steo
Joined 29 May 2009
115 posts
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A compression test basically tells you how much wear you have between the barrel & the piston. If these are past their wear limits, you're not going to get the performance from the scoot but if your topping 37mph top end then your engine is ok.
You didn't what say size engine is in your scoot but if it's only a 50cc then you may have to put a big bore kit on in conjunction with your other race bits. There's only so much life you can squeeze out of a 50.
Before you do this & I know I said different in a previous thread but put in the lightest rollers you can get. The scoot is bogging down in the low revs with the race exhaust so you want it to pick up a.s.a.p. lighter rollers will do this.
This is why engine tuning is expensive & you'll usually find that anyone who has a quick ped are after paying a tuning shop 100's of squids to do this for them. Let me know how you get on.
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peugeot speedfight 307 wrc acceleration problem!!!
3 September 2009, 4:33 PM
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Mikey
Joined 18 Aug 2008
7 posts
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I've got the exact same bike as you, Speedfight 307 WRC and I've just fitted the exact same exhaust as you - Giannelli Extra Chrome with 6.5g rollers that came with it. Only difference is I've had a new Polini Variator & belt fitted and also jetted up the carb from a 50 to 55.Surprise surprise I'm having the exact same problem as you, it's revving it's arse off but takes forever to actually move!! Can't think what the problem could be. As soon as it's sorted I'm selling this damn thing and gonna just get a Jetforce 125. Far less hassle than upgrading / tuning.
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peugeot speedfight 307 wrc acceleration problem!!!
20 October 2009, 3:59 PM
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SHAUN
Joined 31 Jan 2009
3 posts
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Hi mate do you no alot about the speedfight as i got 2 now 1 water cooled thats a w reg and another aircooled 04 reg and both seem to have a problem with the bottom end of the engine fills like they keep locking up neither of the bikes now run i have took off the top end on both and the pistons and barrels seem ok can you advise me on anything that might help thanks shaun . [Log in to view email]
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peugeot speedfight 307 wrc acceleration problem!!!
21 October 2009, 1:17 AM
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steo
Joined 29 May 2009
115 posts
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Hi Shaun, I'd check the simple things 1st. Did you notice if the kickstart was seized or wouldn't spring back up if you kicked the ped? Take off the drivebelt casing which also holds the kickstart & shaft, see if you can turn the front pulley (which bolts onto the crank) by hand. If you can then it may be no more than a dodgy kickstart.If the engine is still seized then examine the drivebelt, is it connected to both pullies, is the belt wrapped round the front pully which could lock up the engine? If the belt is ok then take it off both pullies, check to see if your crank spins, if it does then there could be a problem with the transmission or drive via the clutch to the rear wheel. If everything is ok there then check the starting motor isn't jammed with the starter gear, take out the starter & see if the engine turns. I hope this helps & let me know you get on, regards Stephen.
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peugeot speedfight 307 wrc acceleration problem!!!
21 October 2009, 4:54 PM
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SHAUN
Joined 31 Jan 2009
3 posts
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HI MATE THANKS FOR THE ADVICE BUT THE ENGINE SEEMS TO TURN OVER THEN ALL OF A SUDDEN IT SIEZES SO I TURN THE FLY WHEEL AND ITS FINE AGAIN I TOOK OFF THE TOP END AND ITS ALL OK AND THE BOTTOM END SEEMS TO TURN OVER BUT DONT SOUND SMOOTH I TOOK OFF THE KICK START SIDE CASING AND THE BELT AND ROLLERS ALL LOOK OK ANY IDEAS CHEERS SHAUN
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peugeot speedfight 307 wrc acceleration problem!!!
21 October 2009, 5:15 PM
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steo
Joined 29 May 2009
115 posts
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Hiya Shaun,
If there's noise in the bottom half of the engine then it sounds like a dry bearing usually caused by lack of 2 stroke but here's a couple tests you can do.
Grab hold of the conrod (the shaft that the piston was connected to) & see if you can feel any up & down movement. Also check for a lot of sideways movement, you're looking for wear in the big end bearing. If that's okay then take the drivebelt off the front pulley. If you took the pulley apart then put the nut back onto the shaft. Using a vicegrips, grab hold of the nut & try to feel for any up & down movement, if you can then your main bearings are toast. Do the same check on the other side where the flywheel is. If you feel any play in those checks then your crank is probably shot. Be careful using a vicegrips that you don't damage threads etc as it's not the most scientific approach. Regards Stephen.
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peugeot speedfight 307 wrc acceleration problem!!!
21 October 2009, 8:06 PM
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SHAUN
Joined 31 Jan 2009
3 posts
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HI mate thanks for that info ill try that tomorow when i get home from work , do you no if there is much differents between the water cooled and air cooled its just the water cooled iv got is a w reg but the top half is knackerd , its just when i bought the air cooled 54 plate i was given the origanal 50cc head barrel and piston from the bike as its all been up graded to a 70cc with different rollers carb exhaust and what ever else the boy had done to it but i was woundering if any way i could put the 50cc air cooled piston head and barrel on the water cooled one i didnt no if i could do away with the rad and water pump and pipes or would this be no good and thanks again for all your help on this .
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peugeot speedfight 307 wrc acceleration problem!!!
21 October 2009, 8:53 PM
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steo
Joined 29 May 2009
115 posts
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I'm not 100% sure how different both bikes are or if parts would fit but I wouldn't imagine it was a good idea as the cooling system not only cools the top end but also the the bottom half. The air cooled engine is probably mounted in the frame to maximise air flow were the liquid cooled one doesn't need to be as the rad & water pump do all the cooling. Do the checks I recommended in my other thread, if it's the main bearings that are gone then its a cheap enough fix, just bearings, crankcase seals & a bit of work stripping the engine. If the crank is gone then you might be to use the one from your spare bottom half. All that sort of stuff you should be able to pick up cheap from fleabay anyway. Regards Stephen.
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