Cheap vapor separator at RockAuto any good?

[375instroke]

These things are $15 at RockAuto, so I picked up a couple.  It's 5/16" in and out, and 1/4" return with the restrictor.  Are these originally 5/16" or 3/8"?

[BrianShaughnessy]

5/16.   Somebody probably knows the correct size of the restrictor.   I think its .060 (??)   

Somewhere around my garage is an old YO piece that has a far too large restrictor causing fuel pressure to be about 2 psi.

Otherwise,  an old 3 port chrysler fuel filter can be used for 5/16's inlet lines.     Or if 3/8's is used, there's an old GM 3 port FIL3041.

[Just 6T9 CHGR]

There is also a measurement of the tubes itself.  One of the cheaper repros has too short of a tube inside causing low fuel psi as well.   You have to use a paperclip with a hook on the end to measure the length of the tubes...give me a minute to find the thread.

Originally they were 5/16" in/out & a 1/4" return for all engines.....

Does yours have in/out stamped in it?


Here is the thread.....gives you the measurements of the tubes....

http://a12mopar.com/yabb/YaBB.pl?num=1324606912;start=all

[Sublime/Sixpack]

I bought one several years ago just to have an extra on hand. It's been on the shelf ever since. It seems that I bought it when I was at MATS one year. The box is marked $62.00.
This thread got me wondering if I had bought a good one or piece of junk, so I unboxed it and it checks out as being a good one. Long tubes, and IN and OUT stamped on it.
Thanks 6T9 for the reference thread. 

[DixieRestoParts]

If the $15 one is correct, that's a great price!

[375instroke]

Says "TOP" with "OUT" below it, and "IN" on the other end.
In:
2-1/4" long
.320" outside
.250" inside

Out:
2-3/4" long
.320" outside
.250" inside

Return:
2-7/8" long
.260" outside
.055" inside

From tube end to can end: 3" all tubes.

Can is 2-1/4" long by 2-1/2" diameter.

[1974dodgecharger]

i would get it.....a lot of second hand sellesr I bet buy this and charge 60 bucks on ebay....

[Moparpoolman]

I can't find them..Do you have a part number or can you tell me where to find it on Rock Auto site? Thanks

[DixieRestoParts]

Restrictor has to be .060 to function properly.

[fastmark]

I bought some of those and the restrictor hole is not right. They may be worthless. I'll try and restrict the hole or maybe just illiminate it all together. I use a filter before the pump anyway.

[375instroke]

I can't find them..Do you have a part number or can you tell me where to find it on Rock Auto site? Thanks

GOODMARK GMK213126966  They call it a water seperator.

http://www.rockauto.com/en/moreinfo.php?pk=5490264&cc=1078961&jsn=426

Restrictor has to be .060 to function properly.

I bought some of those and the restrictor hole is not right. They may be worthless. I'll try and restrict the hole or maybe just illiminate it all together. I use a filter before the pump anyway.

So .055" won't work, or can't be brought up to .060"?  I wouldn't have thought it was that critical a tolerance.

[birdsandbees]

Smaller is not going to hurt anything, if it's bigger = fuel easily heads back to the tank on the return line vs retaining enough pressure to push it up to the carb bowls.

[375instroke]

That's what I thought.  What am I missing?

[birdsandbees]

Nothing that I can see...

[fc7cuda]

Soooo, did the one from RockAuto  work out ok?

[375instroke]

I haven't bolted one up.  Going by the measurements I posted above, it looks like it should work like original.  It has a .055" restrictor in it.