13 replies to this topic

[germini30]

Rebuilding a 1275 and am going ro be fitting the pistons and crank etc soon.
Would you use a lube such as Lucas lube on the bearings etc upon assembly or not.

[Spider]

If it's going to be built and then run soon after, I prefer using engine oil.

If it's being built and stored for a while before running, then a decent engine assembly lube - but keep that away from the rings and bores !
 

[germini30]

OK brilliant, I'll stick to some oil if that's best. Engine won't be stood too long

[germini30]

Just watching a mini guy putting an engine together on YouTube and he lubes up the bore walls.

[Spider]

Just watching a mini guy putting an engine together on YouTube and he lubes up the bore walls.

 

Yes, but I'm sure that's with oil, not engine build lube !

[germini30]

No, he uses it on the mains and big ends then smears it in the bores before fitting the pistons. Atleast with engine oil it's a lot safer , especially with the gearbox in the sump

[weef]

MMMMMM..........   UTube and good source for misinformation.

For an assembley lube I have always used a mixture of clean engine oil and a high molibnium  grease, making it into a thin paste capable of being painted onto the required bearings, it adheres well to the surfaces.

Always remember to prime the oil pump before fitting, I use a  petrolium jelly on the pump lobes for this purpose.

[germini30]

That's why I thought I'd ask on here, some stuff you see certainly makes you think

[coopertaz]

Just watching a mini guy putting an engine together on YouTube and he lubes up the bore walls.

hope he has garage door open starting that up

[germini30]

Haha yes hope so.

[Steve220]

No, he uses it on the mains and big ends then smears it in the bores before fitting the pistons. Atleast with engine oil it's a lot safer , especially with the gearbox in the sump

Only use engine oil on cylinder walls. Assembly lube isn't ideal. I've seen people dip the piston in a tub of oil prior to fitment too. This is also a dumb idea. Liberal amounts of oil between the rings will coke up quickly causing issues during the 50 mile run in.

[slidehammer]

I do normally use a cam lube on the lobes and followers though. The rest I would do with engine oil and fill the oil pump as well. Especially as the engine is to fitted and used quickly

[bpirie1000]

Al always with mini things. Spent a fortune on new bearing, now line bore new pistons new this new that..

Saving on 10quid of some building lube protection here is a false economy.

Buy what you can for what you need..

[germini30]

I'm ordering a tube of lucas pre lube from amazon.
Way I see it is why not put a smear on the crank bearings, big ends, small end as well as the cam.bearings and followers.
It's about £10 and could provide protection until the oil gets pumped around the engine.
If I remember correctly I once primed an oil pump by putting oil into the block, where the oil filter head screws into the block whilst turning the engine backwards.