This is my first post on these forums - I am a younger LAA member, very much on the greener side in terms of engineering experience - so please be gentle!
I am currently restoring a Taylor Mono under the supervision of my inspector, which has included fully rebuilding the engine. I am very nearly there now - hopefully a matter of weeks before starting the engine for the first time in 10 years. It's a VW1600 - we've replaced the mags with Leburg and tidied up what was previously a bit of a hornet's nest.
I do have lots of questions that are probably very much beginners' questions, but please would you kindly indulge my ignorance and help me - I'd rather try and find answers to my problems before I bother my inspector. I'll post them on separate threads to avoid confusion but here's my first one:
I am struggling to get my head around the plethora of options for a) oil lines, and b) fittings. I'll ask about the oil lines first, but the two go hand-in-hand.
I have removed a remote oil filter head (in lieu of more frequent oil changes), which was previously fed by a braided PTFE oil line up and down - by my measurements it's 5/8 hosing.
Instead of an oil filter, we plan to route the oil lines to the intake manifold to pass warm oil through the shrouding, which is how it would have been originally.
My question is actually quite simple really: what sort of lines should be used? When is it appropriate to use braided PTFE vs medium pressure 303 hosing?
Onto my next question: fittings. I am tying myself in knots getting confused between UNF, UNC, AN...and trying to source the adaptor I need.
On the intake manifold, we've got 2 x AN4 male fittings welded (one for the oil intake into the shrouding, one for the oil returning back to the case), shown below:
But the lines that will feed these are 5/8 (by my measurements - which may not be 100% precise - 16mm diameter for the PTFE tubing without the braid).
The oil lines originate and connect to a plate with two male 'quick connect' fittings, secured by a hose clamp, shown below:
What I am therefore trying to find is a fitting / adaptor to fit a 5/8 hose (AN10 size?) that offers a female concave connection to an AN4 male fitting - see below:
OR, to understand if I really do need to retain the 5/8 (or AN10?) oil line and whether I could replace it with something of smaller diameter (in which case, I then need to source an adaptor at the other end to fit the block into which the lines originate.
Hopefully I haven't bewildered you too much with my question...any help would be gratefully received!