Rear oil supply line - a different approach

Hopefully this will work and help with prevening another spun rod bearing in the rear. I think it's a better solution for me.

 

I put a mechanical oil pressure gauge (plumbed) on the right rear (passenger side) gallery, and kept the "1D10T" light sender up front.
(all oil mods done)

I figure the pressure drop on the gauge would be as "reliable" providing any hint of oil lack to rear and bearings as anything, unless there is something else that goes on independent of oil pressure/volume. (other than not keeping an eyeball on the pressure gauge, but it is a lifelong habit to scan everything all the time)

I have had the car up around 6000 RPM at WOT at the top end and still at 80 PSI, so that's plenty of volume in the back.

But I have no trouble putting this mod from back to front if there is compelling reason.

 

Did you just have the TA grooved cam Bearings The first time ?

 

Clean install!

 

Looks good!

 

1. What material is the tubing made from? Kinda guessing double-wall, seamless steel in 3/8". Double-flared tubing, inverted flare brass fittings. Is that right? I'm a strong believer that metal or (sometimes) hard-plastic tubing is far superior* to "steel braided hose" in any application where there's no relative movement between the end connections. The kind of metal (seamless steel, NiCopp, copper, etc.) should be chosen carefully for the application. Some metals are more sensitive to work-hardening from vibration than others.

2. Nice job on the clamps and grommet to hold the tubing securely.

3. Looks like the tubing is rubbing against the bracket on the front of the cylinder head (first photo). I can't tell if it's contacting the rear of the head (last photo). It'll wear-through eventually if that contact is not addressed.

If this were me, I'd have tried to hide it by routing the tubing down by the motor-mounts somewhere, instead of over the intake manifold. But that's just a cosmetic thing.

*Metal tubing is lighter, less-bulky, has a longer potential service life, is less-affected by road debris, and is less expensive than "steel-braided hose".

 

Hardly anyone uses stainless hose anymore,..the plastic push loc,..rubber pushloc and nylon braid has pretty much taken over,..unless you're a hard headed pro street guy from the 80/90s ha

 

I like the stainless veneer stuff they sell at autozone!

 

Haha,..yea that's only for the best builds

 

I might be hard-headed.

 

I'll use it if it's gonna really close to heat,..but otherwise it's black nylon,..the new PTFE stuff is one and done forever but damn it's a major pita to assemble

 

I'm going do hard line on my 65 I think the nicopp stuff,..looks pretty badass if done nice

 

I still like steel-braided hose. It's not subject to work-hardening and is easy to use.

 

Yes. Oil pressure was just too low for a lot of reasons

 

1. Yes and yes.

2. Thanks. Will add one more clamp to the aluminum bracket at the front.

3. It looks very close but it's not touching at the front. The extra clamp will help. It's not touching at the rear, the photo makes it look that way. Prob 1/4" to 3/8" clearance.

 

If a steel fuel line doesn't suffer from work hardening why would the external oil line? Just curious

 

Link?

I don't know about "new PTFE stuff", but the PTFE liner inside steel braid goes back decades--certainly not "new". I like it because it's so EASY to assemble at home, with zero special tools or harsh language. 99 percent of the "steel braided" hose I've used is single-braid over Teflon/PTFE; there is the "extra high-pressure" stuff that is double steel braid over the PTFE liner.

They sell this "TFE Racing Hose" stuff to the hot-rodders, in the Industrial world it's Aeroquip number 2807 and probably less expensive. And of course, there's off-brands and imported knockoffs.
https://www.summitracing.com/parts/aer-fcc0620

The Aeroquip hose ends: Again, some are angled, and there's competing product:
https://www.summitracing.com/parts/aer-fbm1103

 

Yeah, I don't know. It probably won't, but the install of the steel line has to be done with care like Scott's is.

 

The only concern I would have are those 90° brass adapters. I'm sure they will never leak. This issue From what I've seen with those adapters they are not smooth transitions in terms of shape or flow. Lots of the 3/8 flare barely have a 1/4" hole cut into them. The 90° fittings are two holes drilled into each other with no radius work at all. Thats not ideal for oil flow at all.

The AN fittings are at least smooth and the curves are have a radius to them.

Just my .02

Clean install for sure though.