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Author Topic: Lifan 150cc big-bore kit: Installation  (Read 38120 times)

Offline Bojer

  • Posts: 109
Re: Lifan 150cc big-bore kit: Installation
« Reply #40 on: Mar 04, 2014, 18:41:27 »
I get the impression that you have not fully dismantled the engine components from under the side covers ?

To get the cases split you have to pretty much remove all the components that are under the clutch and generator covers - clutch , centrifugal filter , primary gear , generator , gearchange shaft , sprocket etc. Apologies if I misunderstood  but as Crazy suggests maybe some pics might help ?

The cases might need some persuasion to come apart as you are separating doweled joints and the main bearings from their housings but shouldn't need "force" - be a bit cautious .

Offline stroker crazy

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  • crazy as a fox
Re: Lifan 150cc big-bore kit: Installation
« Reply #41 on: Mar 04, 2014, 19:46:53 »
To get the cases split you have to pretty much remove all the components that are under the clutch and generator covers - clutch , centrifugal filter , primary gear , generator , gearchange shaft , sprocket etc.

As Bojer says!

Also, it's a good idea to have the motor sitting on the left side when you do split it.

Crazy
“Ride like the Wind” W.H.

Offline Sunrise4567

  • Posts: 21
Re: Lifan 150cc big-bore kit: Installation
« Reply #42 on: Mar 04, 2014, 20:57:19 »
From the left side do you mean as you look at the bike from the front?

Offline stroker crazy

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Re: Lifan 150cc big-bore kit: Installation
« Reply #43 on: Mar 04, 2014, 21:15:35 »
The left side when you're sitting on the bike, the drive sprocket side.

Crazy
“Ride like the Wind” W.H.

Offline Sunrise4567

  • Posts: 21
Re: Lifan 150cc big-bore kit: Installation
« Reply #44 on: Mar 04, 2014, 21:45:30 »
This is getting way past my level of knowledge.  Should have stopped at jets and rear sprocket!!!  I may have to take it to someone who knows what the they are doing for the rest of the job.

Thanks so much for trying to help though...Even after reading through an old CG125 manual I just dont want to make things even worse than they already are....If I had seen it done before I would be more confident but I reckon I should cut my losses, before I do more damage.

Offline stroker crazy

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Re: Lifan 150cc big-bore kit: Installation
« Reply #45 on: Mar 04, 2014, 22:09:30 »
I reckon I should cut my losses, before I do more damage.

It won't be easy to fix it yourself, but it is possible.

Getting someone else to do the the job may be quicker and easier, but it doesn't increase your knowledge and is probably going to be expensive.

Whatever you decide, keep us posted!

Crazy
“Ride like the Wind” W.H.

Offline Sunrise4567

  • Posts: 21
Re: Lifan 150cc big-bore kit: Installation
« Reply #46 on: Mar 05, 2014, 01:55:24 »
You make a lot of sense....will keep you up to date once I decide what I am going to do.

Offline ACEitup

  • Posts: 229
Re: Lifan 150cc big-bore kit: Installation
« Reply #47 on: Mar 05, 2014, 05:42:18 »
Was one of the reasons I bought the bike,
If I cocked up, I could suck it up and buy a new part
or motor!!
Stick with it !
cheers ACEitup

Offline Sunrise4567

  • Posts: 21
Re: Lifan 150cc big-bore kit: Installation
« Reply #48 on: Mar 31, 2014, 01:01:38 »
It won't be easy to fix it yourself, but it is possible.

Getting someone else to do the the job may be quicker and easier, but it doesn't increase your knowledge and is probably going to be expensive.

Whatever you decide, keep us posted!

Crazy
Well I have had a bike shop split the crankcase for me an inspect and clean out any remaining metal fragments from the thrust washer that was eaten. 

Turns out the cam gear ate it and in so doing made some ugly looking scratches and slight bends to some of it's teeth, so a new one was ordered from Ikonik along with a washer.

With the motor checked and recheched it was put back in and when started it still has the same valve train ticking that is louder than the original barrel and head.

Adrian from 00 racing had suggsted that dowels may be missing on reassembly of engine causing the headgasket to hit the piston or the piston being installed back to front but this was not the case.

Changed oils and went for a slightly higher viscosity oil than I had been using from 10w 40 up to 15w 50.  Still the same, the engine starts and runs perfectly and is quiet for the first minute or so then the ticking starts.

On the plus side I have done the front fork mod as per crazy's instructions and it works an absolute treat.  Thanks for that one....Stoked.

Also found a set of various sized threaded blanking screws with a allen head for the carby manifold hole from Bunnings for about $3.50.  Neat and tidy and cheap

And also cut a piece of rubber from an old bike tube and made another gasket to put under the fuel cap to stop any small leaks.

So some small wins......Hopefully more to come if anyone can rack their brain and come up with a possible reason for the louder ticking.

Offline Sunrise4567

  • Posts: 21
Re: Lifan 150cc big-bore kit: Installation
« Reply #49 on: Mar 31, 2014, 01:10:07 »
pic of the damaged cam gear....