Oil gallery plugs
Turbo Mini Forums

I came across this on one of the MG groups. I've not heard of tapping the oil galleries & fitting grub screw before, so I was wandering if anyone has tried it. Personally I can't any benefit on a road car, but whilst I'm machining my block I thought I'd see what people's views were.

The other option is to tap the end of one of the galleries and use it for an oil feed to the turbo rather than the collection of tee-pieces which most people have on the front of their engines.

Here's my block:


If it's a road car or not, does that matter? So debris in the oil galleries is OK on a road car? I think not.

always remove them, but just refit push in ones, cost buggerall, easy to remove.

but a good idea for the turbo as long as you use the one on the clutch end of gallery 8.

always looking for them bigger bunches of bannanas

I can see no reason why that is a no go... You have a open end on the pressurised oil gallery, why not use that one?

I prefer the treaded plug solution, afterall a big pony A series is never going to be in one piece for long!!!!

LOL

Every day is a school day ...........

How fast and how expensive ...... the same question...

I personally drill & tap the 4 main galleries 3/8" BSP and use the same alan plug in vegards pic

the two other ports i drill and tap 1/8"BSP the one under the pressure relief valve & the one under the block where it mates to the gearbox

I used press in oil gallery bungs for this build, but next time the engine is rebuilt i will make up threaded adapters to allow for easy cleaning of the gallery!!

anyone point me in the right direction for some of these 3/8 bsp grubs?

wouldnt mind ordering some tonight

(for refence the drill to use is 15.25mm or 19/32")

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

You can also use m14 plugs which have allen heads, these are found on nova engines so can get from any vauxhall dealer, about a quid each

Team Racing

Have you got a local air fittings supplier, thats where I get my threaded plugs from?

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

Theres one place on the island, called compressed air services, they have everything, but getting them to look in their stock room is like pulling teeth


found a place online no, minimum order is 40 though

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

If you get really stuck I think I may have some knocking about I could send you.

https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel

www.fusionfabs.co.uk



1/4mile in 13.2sec @ 111 terminal on 15psi

cheers matty, first ill try llocally, you never know

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

joey, an easy one is remove the old plugs the 4 side ones.
now!... its the right size well..... a few though over size and run a 1/4" bsp tap in there use a little low strength stud lock to seal the threads no need to drill these as the tap will give more than enough threads for low pressure use

the 2 others on the front, still drill and tap for 1/8" bsp

I've literally just done this today!! managed to get hold of a tap but they do them o ebay for like a fiver.
Didnt drill it hole was perfect size to begin with (for 1/4bsp anyhoo)
I tapped the small plugged passage on the g,box mating face and the one intersecting it for M8 grubscrews with some hydraulic locking compound.
1/4"BSPT (tapered) plugs were 22p each fro mmy local fastenings shop but min order was a fiver so i bought loads of capheads and tapped the block-gearbox fixings to M8.
Yo Benross I only have one large plug either side, you speak of four?!
Potential oil feed idea tho, i already have oil press, temp and original press light running from the christmass tree of tee-pieces on the front lol..

is indeed early 998..
Mwahahahhaa