what the difference between the following

[zc2000]

Guys,

what the difference between the following

Lifan 150 1P56YMJ and the Lifan 150 1P56FMJ

thanks

 

[----M@TT----]

That would be the Letter Y

 

[zc2000]

Ah yes i see thanks

 

[sean01]

do you have pics or links of both the engines...the difference could be age of which they were manufactured

 

[zc2000]

Sure thing

NEW BIG BORE LIFAN 150CC OIL COOLED RACE ENGINE 1P56YMJ - eBay Other Makes, Bike Parts, Motorcycle Parts, Accessories, Cars, Bikes, Boats. (end time 28-Mar-10 15:44:47 AEDST)

LIFAN 150CC RACING ENGINE OIL COOLED 1P56FMJ PITBIKE - eBay Other Makes, Bike Parts, Motorcycle Parts, Accessories, Cars, Bikes, Boats. (end time 03-Apr-10 19:42:52 AEDST)

 

[sean01]

well there both definitely lifan 150's.
it appears that the just simply different versions/models.

also i see on the dhz site that his stroke specs are different, i would believe that to be a typo

also i notice that the package from JR just ride has an oil cooler..

but id say there exactly the same engine apart from the obvious (colour)

 

[----M@TT----]

Told ya it was the letter Y. Id go for the JR one, just coz it looks shinier.

 

[spoonta68]

there both the same engine with exact same specs
may have steel head or bore config were other has alloy head config

 

[zc2000]

That what i would like to fine out as i have had issues with the alloy heads and the threads stripping
if its a steel head less chance of this happening

 

[sean01]

all china engines have alloy heads...
and all lifan 150's are alloy bore

if you want a cast iron bore then you need a lifan 140.. but there prone to kick start gear issues

 

[zc2000]

Thanks Sean having this kind of help at hand is awsome...

So no matter what they all have alloy heads.. has any body had any issues with the treads stripping?

I have used helicoils in the barrel to put the bash plate back on but the intake holes on the head i has one of then strip and i have helicoilded that and it when in crocked... and that sucks.

 

[mattbombers]

they wont strip unless they are overtightened or have more strain then normal.
on the bash plate ones i use spring washers being the bash plate. not sure if lock tight is heat resistant?
but you could do either.

 

[zc2000]

Cheers Matt yeah i think i did them a little to tight... and now i'm a little scared to tighten them

 

[mattbombers]

lol umm no probs.
yes i know the feeling... on my 125 i have like 6 bits where the bolt has snapped from over tightening and left itself in there.
oh well its a shitty engine anyways

 

[sean01]

yeah dont use a long spanner on little 6mm bolts(8mm spanner), they will snap or pull threads..
find the shortest spanner you can. gives you less leverage.
and only nip them up

 

[zc2000]

great advice thanks Sean...

 

[themountain]

one is with a painted bottom end and the other not...thats all

 

[zc2000]

It this by observation of the pics or you know this for sure?