How to install oil cooler on 125cc Ducar Engine????

[avenger_125]

You cant just go out and buy n oil cooler n then stick it on you engine.. you need to have the must have the to bolts for the oil cooler to hook onto other wise dont bother.. waste of time playn around by time you finish yod wish you had just bought an oil cooled bike

What would you know?? you ride an MXB. LMAO. maybe some people wanna make their shit heaps go for a lil bit longer unlike your heap. but yeh i wuldn bother, i got an oilcooled lifan 140cc but if i had a choice id rather not have the cooler because id have less shit on my bike 2 worry bout braking or fallin off and maintaining.

 

[caged]

i think that you have missunderstood the picture from themountain the oil feeds up the head bolts then to the cam shaft then to the sump when fitting a cooler plate the oil comes up the head stud trough the cooler and then to the camshaft.
you senior members may have to clarify this
this is the way how i see it acording to the picture from the mountain

Well i had a look on my loncin head, the oil goes up the head bolts then to the rocker shafts and a oil gallery that runs to the cam.
Does anyone have a pic of the back of one of those cam end plates with the cooler fittings? If they removed the oil gallery to the cam and got oil pressure from one rocker shaft then went through the oil cooler then to the cam. That is the only way i could see it working??? Even then it would be doing hardly anything as a roller bearing cam doesnt even need oil pressure just flow??
IMO these oil coolers are a complete waste of time if my assumptions are right. Has anyone tried to modify the loncins to get oil from the pump like all the other oil cooler compadable engines?

STD cam end plate--

STD loncin head-----

 

[sik_sniper]

holy shit guyz... I just wanted to plant an oil cooler on my bike. Can we not go too deep...im dure there are many noobs looking at this and sayin....what da fcuk... such as me..

 

[themountain]

holy shit guyz... I just wanted to plant an oil cooler on my bike. Can we not go too deep...im dure there are many noobs looking at this and sayin....what da fcuk... such as me..

..so??...read and learn!!

 

[Cactus Jack]

Well i had a look on my loncin head, the oil goes up the head bolts then to the rocker shafts and a oil gallery that runs to the cam.
Does anyone have a pic of the back of one of those cam end plates with the cooler fittings? If they removed the oil gallery to the cam and got oil pressure from one rocker shaft then went through the oil cooler then to the cam. That is the only way i could see it working??? Even then it would be doing hardly anything as a roller bearing cam doesnt even need oil pressure just flow??
IMO these oil coolers are a complete waste of time if my assumptions are right. Has anyone tried to modify the loncins to get oil from the pump like all the other oil cooler compadable engines?

STD cam end plate--

STD loncin head-----

OK Guys .........

1) The oil supply comes up along side the bottom right hand stud .

2) That stud has a COPPER washer up top under the head tensioning nut and between the cylinder and head it requires a rubber 0-ring and little metal tube to stop that O-ring from cocking up into the stud hole . The rubber 0-ring seals against pressure leakage and the copper washer expands when it gets hot to maintain maximum tension on the oil gallery stud for the same reason .

3) Oil exits the stud gallery and into the cam end plate where it travels to the middle thru the slot as shown in the stock Loncin plate . There is a small 3 mm hole that's been drilled from the top of the plate down to the cam centre bolt . Above the slot , the hole is plugged with a metal bung . Oil travels thru the slot in the plate and the drilled hole directs it down to the cam centre bolt where there is the spigot with a dowel tube pressed into it ...... that's there to make sure that oil pressure is kept high as it goes into the centre of the cam .

4) On an oil cooler plate ...... they have simply eliminated the slot from the oil supply gallery on the left hand side and drilled and tapped a hole to route a hose to an oil cooler . Then they've drilled and tapped a hole on the opposite side of the plate (right hand side = top of engine) to route the oil cooler return supply line back in ....... where they have machined a slot to direct the oil straight to the centre of the cam .

 

[Cactus Jack]

All of the aftermarket oil cooler adaptor plates are different to the stock plates ....... most of them don't have the spigot guides at all .......

http://us.st11.yimg.com/us.st.yimg.com/I/dratv_1978_120448355

Pic of a cooler adaptor that looks similar to stock but in reverse . It shows the feed hole to the cam :

http://us.st11.yimg.com/us.st.yimg.com/I/dratv_1978_121074653

Pic of a Staggs adaptor plate compared to a stock Lifan 120 plate :

http://img170.imageshack.us/img170/3049/img2786ze4.jpg

http://img218.imageshack.us/img218/5005/img2787ti6.jpg

The adaptor plates from tubes380 are flat with a 28 mm diameter recess bored into them ..... they have NO spigot guide ..... so some oil pressure can possibly be lost thru the roller bearing on the small end of the cam . I've seen some cams that have a small bearing with a seal on one side .

 

[sam93]

You can buy the adapter plates off of ebay america. But you cant get them by them selves its like everything. cooler, lines adapter etc.

 

[china boy788]

i got an adapter plate from thailand, akunar, and it was $17 plus post ,

was billet cnc too

 

[Th3D3v1Ly]

I had a look on ebay a few months ago for just thr adaptor plate,. Only found one. I had the same problem, had an oil cooler and lines, bolts etc but no plate. Only found one. Gone now. Buy a new kit with everything you need and sell the other on ebay?

 

[sean01]

theres also 2 kits available. each have a different size cam spigot..so be carefull when ordering...

lolz just noticed the age of this thread