Do your measurements include threads?

 

Threads ...

...are all the same. Appears to be about M7-1.0.

 

I meant length. Is the overall length including the threads or what would normally stick out when installed?

 

The lengths in the photo above are total. The threaded lengths are roughly 7.5mm give or take. Doesn't seem to be a discriminator.

 

Are there outward appearances (looking at them installed, but with just the hoses off) that would differentiate them from one another? I'm willing to take a picture with my hoses removed (tomorrow morning) if you could tell from a picture... and any odd description of each I could give.

 

The only one outwardly different is the "fat" one with a 6mm OD which is 2mm longer than the other three.
Thanks!

 

Sorry, but I fell asleep last night before I could get down to the garage. I have a complete plenum from a 1985 L-jet I can take a pic and measurements of for you.

I'll try to get to it this evening.

 

The fat one goes in the center of the cluster of 3 (vapor seperator). The tiniest holed skinny one goes above that (fuel pressure regulator), and the other 2 are interchangeable... That's from my visiual inspection of mine. I took pictures, but there's not a sd card in the camera... If I can find the cable for the camera, I'll still try to get them up... Oh, and your plenum and throttle body look awsome! How'd you get it all so nice and shiney?

 

OK, I found the cable... here's the pics...

 

The bottom line is- it really dosen't matter which nipple goes where, all the hoses at this location on the intake have the same amount of vacuum on them.

If you're completing a concours restoration- then it matters.

 

A Huge Thanks...

...to Kenny. Just what I needed. This BB is great! My pieces/parts are shiny due to single stage chrome powder coating, I had my cam cover, plenum, throttle body, intake manifold, and thermostat housing all done. While not show car quality due to poor surface prep (my fault), the results look many times better than what I started with---I just hope it holds up. Thanks again.

The bottom line is- it really dosen't matter which nipple goes where, all the hoses at this location on the intake have the same amount of vacuum on them.

Duke, I respectfuly disagree partially. Yes the vacuum for all 4 ports is equal. For the sensor & regulator they both use static vacuum not a dymanic flow--the differences in the orifice size dampen changes in the vacuum signal over time which may make a difference. In the case of the separator & vapor cannister, there is an actual mass flow which is restricted (or not) by the the nipples orifice. (at least this is what I think).

 

While wearing my engineer's hat- the change in flow would be so small that it's really not going to matter were you attached the nipples. I took my manifold off last summer to replace hoses and clean it with a wire brush to remove at least one layer of crud. When I replaced the nipples- I had the same question, ran around for a week, looked at my manual to see if they were in their correct location only to find they were not. Replaced them according to the manual- no difference. I'm talking about the location of the nipples with appropriate diameter hoses only.

I can't fault anyone for wanting to take the time/effort to restore/renew/maintain these vehicles. I wish my car were as clean as yours...

 

It's a sickness...

It all started with a head gasket. Now I find myself blasting/brushing/polishing/painting every cruddy little piece. Hope to have it all together and running by Sunday night. Fingers crossed!