Ariel Owners Motorcycle Club

I have got my 1952 model KH 500 engine back from T & L Engineering who I found are great with old British engines. The block has been sleeved back to std bore, the head fitted with inserts and new guides, the crank ground and balanced with new shells, the crankcase lined bored for the new timing side bush. I have a few queries if anyone can help.
1 Are the barrels symmetrical? They seem to fit both ways round.
2 Does the oil pump have a gasket where it fits to the crankcase?
3 Shall I use the old con rod nuts which appear to be original or use the new ones from Drags part no SN-3 which don't appear to have any locking facility. Do I use Loctite on these?
4 Should the breather that holds the oil pump drive shaft in place pass air both ways? Mine does.
5 Should I use running in oil or just normal mineral 20/50, I intend fitting an external filter.
6 What sealant should I use for the crankcase halves?

I will be grateful for any help you can provide.

Les

There is a gasket listed - K65-48 - between pump and crankcase and
I'd expect there to be one in that circumstance.

Having rebored the cylinders the only reason for keeping them in the
original orientation is keeping the tappets with the original cam lobes.

I've always replaced big-end nuts and bolts. Ask Draganfly what they
recommend.

Running-in oil is exactly what you need.

I use 3-bond under those circumstances.

Hope this helps

1 - I believe so on the earlier bikes, but I have a memory that the name of the forge is cast on to the barrel flange and usually goes
To the rear

2 - yeah it should do

3 - unless you have castellated nuts with split pins I would always replace BEWARE there are two different thread types so you may need to order both variants and send the wrong ones back!

4 - yes, the ball bearing is for the spindle to spin on, not for providing a check valve for a timed breather

5 - running in oil and after 5-600 miles swap to straight 40 if using a filter

6 - second vote for threebond

Hi Will / Rob

Which Three Bond product do you recommend please? (TB?????).

Regards Mick

I use 1215 for most applications Mick.

Les (and others)
There's an 'edit' function that can be used to modify posts (the 'pencil' button at left side to the row of button icons at the upper right of each post) - no need to re-post the entire text if you want to make changes.
(And there's also a 'delete' function - the X icon !)

(I've edited-in your point 6 to the original post and deleted the other two essentially duplicate posts.....)

SG

(PS I'm still quite happy with Wellseal...)

Thanks really sorry I am still learning

Les