Specter Remote Oil Filter Lines

[Biscuit]

When I had the first rebuild of my F I ended up with a block from ~1970 that still had the oil paper filter attachements. Not wanting to deal with that, I purchased Specter's remote oil filter kit. Link to catalog page

So now with the rig back in the shop (if you've seen my posts on Pirate you know what I'm talking about) the mechanics are questioning the size of the lines that came with it. They feel that the oil lines are too small.

They have offered to replace the lines with custom made larger diameter lines free of charge and to give me the specter lines back so I'll have both. (I accepted).

Any thoughts?

 

[projektdotnet]

i want an old TP filter like my dad's 69

 

[Mace]

I don't really see what you are asking..

I have a set of the SOR lines on my 72, been that way since 88.

You got some new free lines, be happy..

 

[Degnol]

What Mace said. Putting larger hoses on? Fittings are the same? They didn't accomplish much. I just modified a remote oil filter to use as a fuel filter and I drilled out the center hole and drilled and tapped the fittings for 1/4"npt. The orofices in the fittings and the filter mount ARE really small, but that's the way it came.
Free spares....good.


Ed

 

[LC_Hamma]

Back when I was hooking up my oil cooler I decided not to run the smaller lines. Instead, I went to a speed shop & they looked kinda puzzled & asked why my lines were so small. So, I upgraded to larger dia lines for more flow:

 

[clemson55]

Perhaps I am wrong but making the lines larger wont increase flow. Unless you increased the size of the holes coming out of the cooler which go into the lines. b/c only so much oil can go through the holes regardless of the size of the line.

 

[LC_Hamma]

Perhaps I am wrong but making the lines larger wont increase flow. Unless you increased the size of the holes coming out of the cooler which go into the lines. b/c only so much oil can go through the holes regardless of the size of the line.

Yeah, forgot to mention that I did drill & retap all oil holes (filter & block areas) to IIRC 1/4" NPT.

 

[projektdotnet]

Hamma those are some sweet lookin lines!

 

[Biscuit]

I agree on the no change in flow with bigger diameter lines (same volume less pressure).

But yeah, I'll take free any day of the week...and if they get annoying I can always put the SOR ones back on.

 

[mattg]

For what it's worth...

A couple years ago when my rubber oil lines went, I bought the Specter lines. When I changed them out I noticed that the Specter lines seemed smaller in diameter, smaller than the fittings even. So while a line larger than the fittings won't help, a line smaller than the fittings (like Specter's may be) might reduce flow a bit. Perhaps that's what prompted the mechanics to comment on it.

That said I've had them on for a while now with no problems.

 

[Mace]

There is another thing to consider..


Those lines come off of the adjustable bypass.

Basically the bypass either flows the oil to the filter or to the engine. Sooooo, if you allow a TON more oil to go to the filter you could potentially starve the motor.


I kinda doubt it would be an issue but it is something to consider.

More flow is not the best idea on an F motor...
It can starve your bearings...

 

[Poser]

There is another thing to consider..

More flow is not the best idea on an F motor...
It can starve your bearings...

More flow to the filter head.....





Stock or similar has worked great for YEARS.....

 

[Soul_Man]

Bigger lines would improve flow even if the orifice at the filter is small. Your resistance to flow in the lines is related to the length of the line (so you would restrict flow a lot more by having a long narrow section as opposed to one narrow hole). The narrow hole in the filter would put a restriction in one part of the system, where a narrow line would put restrictions in the entire system. I forget all the formulas from fluid dynamics but length does factor in.... At least the pressure will drop over the length of the line, and since pressure drives flow, the flow will drop.

Not commenting on whether the original lines were sufficient or not, they may be.

 

[Poser]

Flow creates pressure......

 

[Biscuit]

Bigger lines would improve flow even if the orifice at the filter is small. Your resistance to flow in the lines is related to the length of the line (so you would restrict flow a lot more by having a long narrow section as opposed to one narrow hole). The narrow hole in the filter would put a restriction in one part of the system, where a narrow line would put restrictions in the entire system. I forget all the formulas from fluid dynamics but length does factor in.... At least the pressure will drop over the length of the line, and since pressure drives flow, the flow will drop.

I was wondering when the Reynolds number issues would show up (I know exactly what you're talking about thanks to several aerodynamics classes).

And to be safe I may just put a second mechanical guage on the fliter line, just so I can tell if I'm starving my engine with the bigger lines.

On a side note, just for everyone's amusment, the FJ is converted to the Canister filter, while my 2000 Jetta has a paper cartridge filter WTF.

 

[Mace]

Again, the pump can only put so much oil out. If you increase the flow to the filter, you decrease the flow to the engine.

So you might want to adjust the flow/pressure regulator to make sure the motor is not being starved.

 

[Soul_Man]

Mace, since that is just a relocated filter (same circuit as the stock), isn't that all part of the oil system? I thought the pump sent it to the filter and from there it all went to the engine (so more flow to filter would be more flow to the engine). If it was a bypass filter, I could see where too much flow would be a problem.
I'm not completely familiar with the oil routing: I could see if it was set up to where the pump sent 1/2 to the motor and the other 1/2 got filtered and returned to the pan or something like that. I always thought it was one circuit, and if so I don't see how increasing the flow to the filter could starve the motor

....Re-read your earlier post:

There is another thing to consider..


Those lines come off of the adjustable bypass.

Basically the bypass either flows the oil to the filter or to the engine. Sooooo, if you allow a TON more oil to go to the filter you could potentially starve the motor.

So the stock filter does work as a bypass type filter? Is this the same on the 2F?

 

[Mace]

The stock filter on almost all F motors (the 74 might be different I am not sure) is a bypass design, some of the oil goes to the motor and some of the oil goes to the bearings.

2F's are direct..

 

[CruisinGA]

The stock filter on almost all F motors (the 74 might be different I am not sure) is a bypass design, some of the oil goes to the motor and some of the oil goes to the bearings.

2F's are direct..

74 is direct.

 

[Biscuit]

I'm not sure what year the new block is (I forgot to write down the block number while I was at the shop). The orginal block was a direct.