Quick oil line question

[widebody911]

I'm going to replace the slip-on oil line that comes out of the bottom of the oil tank and goes into the right side of the engine case on my 3.6L, where the oil cooler would be on a normal engine.

I bought a used oil tank and AN-16 lines and bungs - spendy! I'm going to weld the bung onto the oil tank and onto the oil line out of the case.

Before I get started, do any of you see a reason why I shouldn't do this? Any caveats other than leakage, which I already have anyway?

This is the oil line i'm replacing:

[Jim Smolka]

On my 3.2 914, I took the engine oil cooler off and had a AN-16 fitting installed onto the inlet side. Works great, no leaks.

It may be possible to weld/braze a fitting onto tank itself an then have a AN -16 fitting there too.

Note, some folks use AN-20 lines in this application

[Bill Verburg]

Should work fine, avoid the 90&deg elbows. As always bigger will have less restriction, but -16 on the suction line is fine. According to CM , who I believe the biggest restriction will be at the fittings anyway.

[widebody911]

Well, tonight I welded the bung onto the tank.

The place where I bought the fittings only had -16 He looked in the cat and didn't see larger ones either, although they have to be out there *somewhere*.

I guess if I'd really tried I could have avoided using 90-degree fittings, but it's too late now...

[widebody911]

As an aside, I found 2 dipsticks in the new oil tank!

[Jim Smolka]

Now comes the trick of making sure you removed all the small metal pieces inside the tank.

[surflvr911sc]

Thom, are you going to have a flexible connection on the other side?

I was thinking a rigid connection on both sides might not be the best idea. It seems to me that there would be some flex between the oil tank that is mounted to the chassis and the engine, very small amount of flex mind you but it wont take much very long to break something.

Just wondering if you’ve thought about that and what you thing about it.

[widebody911]

Originally posted by surflvr911sc
Thom, are you going to have a flexible connection on the other side?

The setup will consist of the two AN-16 fittings with a length of braided line in the middle. Any vibration will be absorbed by the flexible line.

I don't see a reason for concern - this is exactly how the two oil lines for the thermostat are set up.

[Chuck Moreland]

It's good practice to put a bend in a flex hose to accomodate vibration. If the hose has to be straight, put a little "S" curve in it.

The hose won't stretch, it only bends. If the hose is straight, any linear motion tries to pull the hose out of the hose-end.

[Chuck Moreland]

The hoses to the thermostat have slight to extreme bends in them depending on vintage.

[widebody911]

Originally posted by Chuck Moreland
It's good practice to put a bend in a flex hose to accomodate vibration. If the hose has to be straight, put a little "S" curve in it.

Right - that's why I put the bend in my Okie-engineered temporary hose show above.

[Early_S_Man]

Thom,

A couple of suggestions ...

1. A Titanium-sheet heat shield between the exhaust system pipes and the new oil supply line ... the closesr to the exhaust the better!

2. A Teflon-stainless braided hose would seem more suitable for that particular supply hose in close proximity to the exhaust ... Aeroquip makes hose and steel fittings in the AN-16 size. They also make a gentle-radius steel 90° bend with male fitting on one end and female swivel fitting on the other ... that would seem perfect to get past the area that caused your big leak with the previous hose.

[surflvr911sc]

Originally posted by widebody911
The setup will consist of the two AN-16 fittings with a length of braided line in the middle. Any vibration will be absorbed by the flexible line.

That explains it. I thought that you might be using the B&B hard line w/ out any flexible connections inbetween. Sounds like it will work great they way you going w/ it.

[widebody911]

Originally posted by Early_S_Man
1. A Titanium-sheet heat shield between the exhaust system pipes and the new oil supply line ... the closesr to the exhaust the better!

Yes, that would be great - but where would I get one?\
2. A Teflon-stainless braided hose would seem more suitable for that particular supply hose in close proximity to the exhaust ...


Aeroquip makes hose and steel fittings in the AN-16 size. They also make a gentle-radius steel 90° bend with male fitting on one end and female swivel fitting on the other ... that would seem perfect to get past the area that caused your big leak with the previous hose.
I'll have to see if I can find one.

[Bill Verburg]

My plan for that line is to use a stock S hose(already there) w/ an insulator)not done yet) as suggested by Warren.

Here is a site that has some potentially good insulators

[addictionMS]

Royal Brass in San Jose, has all the steel fittings in AN-16 you could possibly need.

Jim

[Embs]

Originally posted by widebody911

Here ya go:

http://www.stockcarproducts.com/aqp1.htm

by the roll or by the foot.


I have also used these clamps:
http://www.bakerprecision.com/earls21.htm