oil jet timing cover

[packer]

Hi in my parts cataloge it shows a oil jet for the timing cover ,, wo641050 ,, i do not have one ,, on my timing cover, should i have one on my gpw with chain ,,or is this just on the gear driven camsharfts , thank you colin

[echelon1]

The grear driven engines have a double oiljet.
Chain driven engines have oil squirting out of the crank sprocket.

Gindi.

[Ben Dover]

Please explain "double". last time I looked on a Gear type Jeep engine it was a single Jet O.riginal earlier production Engines with Timing Gears had an 0.070" Aperture, which was later changed to a 0.40" Aperture togive more Oil Pressure at the #1 Connecting Rod.

[echelon1]

Ben Dover, If I recall right I have seen these nozzles with 2 jet ports one for each gear.
It can be a WOF future, but not sure.
Anyway, If I come across one I'l picture it for you.
In the mean time let's say that I am wrong about the double jet nozzle.

Regards,
Gindi.

[Ben Dover]

The 641050 became 924335 when the aperture was reduced from 0.070 to 0.040. We used to peen the hole smaller or braze and redrill. I believe you will find the WOF engine with the single hole 924335, only one hole is necessary, it is aimed between the gears.

[echelon1]

only one hole is necessary, it is aimed between the gears.

That is absolutelly correct.
Where did I notice that double jet.??
Getting old is suck's.

Yours,
Gindi.

[Ben Dover]

The Jet is often to as the "pisser" in automotive machine shop lingo.

[packer]

hi all i thught the oil return from the filtter oiled the chain ,, but you say there is a oil jet in the front sprocket ,, is that correct thank you colin,

[Ben Dover]

The engines with timing chain had an oil passage thru the end of the crankshaft directly in line with a corresponding hole in the bottom sproccket which allowed oil under pressure to lubricate the chain. The later engines with the fibre camshaft gear had a pressure fed Jet at the front of the block that directed a jet of oil between the Camshaft and Crankshaft gear.
The return oil from the filter that is dumped back thru the timing cover also provides lubrication.