external oil feed to head

Hey guys! Thank you for posting about how to make an external oil feed to head, I'm very interested and want to learn more about doing this modification, I really want to do this and fairly soon. Would it be possible for someone to please post a list of all the specific parts that will be needed, as well as a list of specific tools needed?

Thank you! Gary
 

Burning question, how and to what are these two lines connected on the case end? Looks like they're connected right near the oil pressure sending unit?  

I know this is an old thread but I was hoping zed would read this and maybe repost the pictures that are missing from the first page.

Thanks

calum wrote:

I know this is an old thread but I was hoping zed would read this and maybe repost the pictures that are missing from the first page.

Thanks

Been a few years since i posted this and my last PC ate all the pics when it self destructed.
Will have a hunt around and see if there's any duplicates i may have posted on other forums i can copy and paste.

Thanks. What size tap/grub screws did you use to plug the block?

The oil feed holes are around 6mm so i thread them M8 x 1.25mm.
I've just done a couple more cases for my latest builds and this time had to make some short slotted pan heads from hex bolts that sit in flush in a counter bored hole.
This was because the factory oil holes were drilled at a slightly steeper angle right over the top of main oil gallery that left a through hole with not a lot of depth for the threads which would have needed a very short grub screw with nothing to stop against and i wasn't going to chance just relying on loctite to stop them unscrewing and dropping in the gallery however slim that may be.
Normally the hole runs at an offset and cuts into the gallery wall which allows a grub screw to bottom out...

Very tidy. At the moment I think I'll pull the gallery plugs and tap the holes before I paint the head. That will also make it easier to clean out anything left over after bead blasting. Then I'll just plug them and make sure my 11.5mm drill bit fits down the stock oil passages. If I have any problems with oil leaks down the road I can then switch to a dry block without damaging the paint.
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My main problem at the moment is that I have no idea how to route the oil lines to the head on my build. Should be easier to figure out after I've put everything back together.

I've gone a simple more straight route on this latest build with a feed from the end of the main gallery straight up to a 4 branch manifold mounted with a couple of bolts on the cam cover.
Fittings in the head are AN4 threaded taper seat bulkhead instead of banjo bolts so it all unbolts and lifts away in about 10 mins or so .
The main feed can also be taken from the m14 port on the pressure switch and run up out of sight between the inlet boots but then it's not so easy to remove.

 
 

I pulled out the plugs on the head today. I also opened up the cylinder stud channels to 11.5mm. As I said in the last post, the plan is to cut all the threads in the head before I paint it so I can dry block it later on, but just open up the channels now so I have enough flow. I may go straight with a dry block but I'm not sure at the moment - depends on whether I can route the hoses around the oil cooler hoses easily.
If I do go with the dry block I'll be using 10mm banjo bolts on AN4 fittings and will route them over the top as zed has done.

I have a couple of questions:
- What's the deal with the channels for the front outside cylinder studs? Looking at the galleries in the head oil runs into them from above, but looking at the crankcase it seems to be a dead end.
@zed1015:
- how did you get the M8 tap started for the plugs in the head? Did you make a jig to bore the holes out to ~7mm on the angle or did you just use an M7 tap (or imperial equivalent)?
- any chance you want to make me a manifold?  
 

calum wrote:

I have a couple of questions:
- What's the deal with the channels for the front outside cylinder studs? Looking at the galleries in the head oil runs into them from above, but looking at the crankcase it seems to be a dead end.
@zed1015:
- how did you get the M8 tap started for the plugs in the head? Did you make a jig to bore the holes out to ~7mm on the angle or did you just use an M7 tap (or imperial equivalent)?

 

Oil comes up the rear stud to the inlet cam and across the horizontal drilling in the head to the exhaust.
Because of the way the diagonal galleries to the cams are configured off the stud holes the front one just fills with oil by default.
To thread the diagonals to the cams i use a small rotary burr to ease back some material on the angle to create a squared off end to the hole so that the drill and tap has a straight path at it.