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Author Topic: Lifan 150cc big-bore kit: Installation  (Read 39042 times)

Offline orrible-64

  • Posts: 713
Re: Lifan 150cc big-bore kit: Installation
« Reply #50 on: Mar 31, 2014, 01:14:19 »
mine ticks too.been searching for what changes????

still runs fine and goes well , revs hard and if it blows up...well i had fun.

will be swapping the 125 gear back on but keeping big valve head for racing at the salt lake next year. no 150cc class.  Goes 50,100,125,175,250 i think.

i think that it is in the rocker gear and (guess)the washer you have fitted may not be required in the lifan motor ??? tighter clearances may have spat the washer.

have bought an endoscope to have a look in at rocker gear. will let you know what i see

Offline stroker crazy

  • DTT SUPPORTER
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  • Posts: 4217
  • crazy as a fox
Re: Lifan 150cc big-bore kit: Installation
« Reply #51 on: Mar 31, 2014, 01:30:36 »
So some small wins......

Glad you didn't have much damage - it could have been waaay worse!

Not sure about the ticking; the 150 set-up seems to be mechanically a bit noisier than the 125.
I've done nearly 2000k since the upgrade and everything seems fine.

Crazy
“Ride like the Wind” W.H.

Offline dahond

  • Posts: 5
Re: Lifan 150cc big-bore kit: Installation
« Reply #52 on: Mar 31, 2014, 09:18:41 »
I've learned, from an old honda garagist, you should hear a pushrod ticking +
the clearance on the exhaust can be set a little larger  : the exhaust valve gets warmer en the pushrod expands more.
My 125 ticks.

Offline Bojer

  • Posts: 109
Re: Lifan 150cc big-bore kit: Installation
« Reply #53 on: Mar 31, 2014, 11:25:17 »
Yep my Ace is "noisier" than other non balance shaft equipped 125s I've owned , nothing dramatic - did wonder if it was my "hard" run in ?!  ???

Offline Tijmen

  • Posts: 221
    • Currently working on a GN125
Re: Lifan 150cc big-bore kit: Installation
« Reply #54 on: Jun 03, 2014, 18:08:24 »
I'm thinking of installing a 150 big bore kit on my Suzuki GN125 and was wondering what you think after having ridden it for a while. How significant is the performance increase?

Offline stroker crazy

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  • Posts: 4217
  • crazy as a fox
Re: Lifan 150cc big-bore kit: Installation
« Reply #55 on: Jun 04, 2014, 00:08:14 »
I'm thinking of installing a 150 big bore kit on my Suzuki GN125 …

I don't know about the Suzuki, but it's made a significant difference to the 'Ace'.

My 150 has no difficulty accelerating away from the 125 model, even though I'm somewhat overgeared with 17/35 sprockets.

I think the larger valves help as much as the 20% increase in capacity.

Crazy
“Ride like the Wind” W.H.

Offline Sunrise4567

  • Posts: 21
Re: Lifan 150cc big-bore kit: Installation
« Reply #56 on: Jun 04, 2014, 02:22:58 »
How significant is the performance increase?
I have found the increase in performance to be just as crazy states, around the same percentage as the capacity increase.  It makes a real difference in mid range torque where it was definately required.  Top end gains where not as great in my experience, but my exhaust has the cat removed and a 12mm hole in end baffle which is probally washing a bit of top end speed off which is a trade off against a really loud straight through system and custom header.  Like crazy also mentioned gearing, carb, jets and filters all combines to make a much more pleasurable experience.

Offline ACEitup

  • Posts: 229
Re: Lifan 150cc big-bore kit: Installation
« Reply #57 on: Jun 04, 2014, 09:05:24 »
.
My 150 has no difficulty accelerating away from the 125 model


I can confirm that :(
still waiting for ooracing to have the 150 big bore, valve head back in stock!
a week to go I'm told ?
mean while I'm thrashing this pup!
cheers ACEitup

Offline ACEitup

  • Posts: 229
Re: Lifan 150cc big-bore kit: Installation
« Reply #58 on: Jul 30, 2014, 07:52:47 »
Hey All,
Finally got delivery of my 150 cc big bore and valve kit from ooracing !
after being out of stock for a month or 2 :(
Following crazy's guide as posted.!
As my first major mechanical job it  all when to plan
and as Crazy did make it over
to help and guide me to reassemble.
and kindly supplied the torque wrench.
Ur a Legend mate !
It would of started first go but I decided to do a quick
carby jet upgrade !!!! ( ran the battery dead trying )
kicked over when I sorted the fuel
anyways all good !!
Only done a fews K's but I 'm smiling !
Money well spent.
looking forward to tweaking carby !
btw in 7 hrs we did 2 bikes,  (plus my carby rejet )
including shopping for jets and oil !
Now, just need to ride....
cheers ACEitup

Offline orrible-64

  • Posts: 713
Re: Lifan 150cc big-bore kit: Installation
« Reply #59 on: Jul 30, 2014, 09:59:01 »
Enjoy, it is great mod


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