Search results

I just checked cams from Lifan 120, 125 and 140 cam. They are running NTN and FJK japan bearings... That is a bit of nasty business with that crank!

If you want to go over 57mm you can have the cases milled or bored. I have them bored to 61mm and only bore to the depth of the piston skirt at BDC. The sleeve before it is inserted into the cylinder is turned down on the lathe around the skirt to 61mm and shortened also to the piston skirt...

yeah I'm done with it, the stroke on jailing is 57mm, lifan monster and 138 is 55.5, Lifan 140 and 150 is 59mm.

or if you want a real easy quick way, just use a long socket or plug socket on the retainer and holding the head upside down in your hand just pump the spring a couple of times and they just fall out...easy

Ah see gotta be careful i nearly took you at your word! ;) Yeah, I never read too much into broken cranks. They have been snapping since the day they first swung a piston off one...its usually the stuff attached that causes the problem or modifications made. Sometimes they just go from being...

It still is mute point though because those engines are long gone by the wayside for anyone looking to buy a new motor today. This was the original question also. If you really want to compare the two factories by todays standards and limit to 125cc. Then you do what you want with your jailing...

See I can take notice of that 'cause you done your homework. But to complete the comparison all factors would have to be in. Main bearings (in case the cams are outsourced) checked as well. Also confirmation your mates is genuine Lifan and how old compared to your motor. I can check what Lifan...

Bumpty Bump...

Go for a 57mm kit. Most dealers are sourcing there kits from akunar. The original bore you have will need to have the borer run through many times and they will charge for every pass. hey i'm gonna bump that thread to get you going scott!

Your best deal is a 57mm BBK with lifan 28/24 valve head. TB300/z40 cam. Standard jialing/GPX build. Also your mate sounds like he has an early Lifan motor or Lifan copy! Some of the Australian importers had old model engines in some budget models. Also there have been plenty of scams with...

I would add too, that i suspect that some if not all the broken cranks you see are a result of flywheel shaving or unbalanced rotor kits. The flywheel shaving was big before china rotor kits and what I have never seen mentioned is that you will notice each flywheel has been balnced with...

IRK will not increase power, or change where power is made, allow to rev higher or any other performance increase. It simply allows the motor to accelerate (spin up) quicker. You need to find the balance where you can have maximum accelleration on the verge of breaking traction all the time. So...

They increased the lift on both lobes but majorly on the exhaust. They must've figured out like we all have, that the engines gain big with improved exhaust flow.

You don't have to worry I wasn't referring to anything you posted when I had a dig earlier. I havn't bothered answering or proving anything cause it is a never ending battle to engage people who equate brand or expense with quality. But for your benefit...I will tell what made me lmao! The...

...lmao.......

Ok. Your valves are smaller, but there are TWO of each of them! I give up...

yer u mustav misundastand me cause wot i say is ...u sayd big flow no gud on 125, but u put daytona on ...confussed mor now

lets just say the two most current engines from each factory

the sanding roll will just easy go round the bend you will see. Finish the bend by hand to make perfect. You will feel imperfections easily with your finger.

So u droped 5k on daytona head hoping and wood flow less so you can build big HP 125??? I'm confussed...I got all rong, I better stop wif 30/24 valve Lifan heds....