speedfight 70cc help

Hmm weird when i had that on i had my normal standard jet in 54 now am at 56 for the exhaust and its a nice coffe colour spark plug am going to try refit this again now that i got more knoledge last tine i tried was last year when i was 15 couldnt even ride the ped yet just used to start it up in the garden. If i was to downjet would i be lean may go to a 55 . Also do you have any help on y my airfilter hole has to be blocked up cleanes the carb

 

not a clue

 

Hmm thays weird when i first got it. It had a washing up sponge for the air filter thays when it worked best still have that sponge may give that a try

 

oooo ok, yer the spunge would be like a VERY restrictive filter and would have a small(i think) jet. it would also be why it starts when it blocked.

buy or fit if you have a good air filter and buy a jet pack

 

So am thinking for this problem i would need downjey because my moped probaboy running rich with the filter covered

 

no if it was restriced with the sponge fitting a filter that will flow better would need more fuel. like i said you need to get a jet pack.

 

Yh spoke to the guy from pedparts he said i would need to upjet

 

my speedfight with stock carb, MHR Rep and free flow was on an 82 so i would think you would be around the same

 

I got a 70 laying around in my spares from when i had the my open sports air filter am going to try that and order a box of jets and rollers and see how it goes i wish there was a easier way to get to the jets instead of taking of the whole carb

 

how do i know if my speedfight is cat i got a sports exhaust on right now but i think its still running standard rollers

 

the cat is in the exhaust when you remove the exhaust it becomes none cat

 

oh okay i ordered 6.2 rollers and a 64 jet i also got a 70 62 and 68 in my spares let you know how it goes with all this would i be able to powerwheelie

 

just remember on the jetting start big and work down.
and good luck.

 

hi i got my jets i started from 60 to 70 all the 60s it bogged down and when i done full throttle it died the 70 it stayed running even on full throttle but still bogged so i have to get more jets but am thinking since it stayed running with the 70 its in the 70 range. i didnt know you have to upjet so much for a sports airbox not even a open sports one i just put my standard airbox back on with a 56 jet

 

what air box do you have on? link me plz.
am open type filter would need arounf 20% more fuel, with 0% gains on a low spec engine.
sports exhaust need around 2-5% more fuel, with 10% power gains on a low spec engine
sports cylinder kit(70cc) need around 15% more fuel. with 50-75% power gains on a low spec engine

open filter just make noise and drink fuel.

 

http://www.pedparts.co.uk/product/1458/peugeot-speedfight-tunr-racing-airbox-air-filter.

Its not even a open air filter just has a bigger opening to the carb to allow abit more air and they say you dont have to upjet which is not true i was even told when speaking to pedparta you do need to upjet .

 

The inlet where the carb sucks air through in to the carb is pretty big compared to standard which ia quite a small hole but i didnt think you would need to upjet that much since its a airbox

 

do you have a good seal with box to carb

 

The seal is good the boot completly goes round the carb like the standard one

 

Finally got it running with my standard air box and withoit the air bok hole being covered its running on a 82 jet my acceleration is perfect now and the air box has a few holes drilled in it dont know why i had to upjet so much