vacuum reservoir question

[volksnut]

Just finished building my low buck vacuum tank, but now I'm thinking it might be too big...the measurements are 1 1/2" round by 5" long. Pictures will follow when finished. Also anyone ever use steel brake line J B Welded to the intakes instead of say 1/8" barbed fittings (to big and ugly)

[NITROPIXIE]

Sounds like a good plan with the brake line and JB Weld. I can't see much of a problem there. You could even use epoxy or araldite?

The vacuum reservoir sounds a little on the large side. Something the size of a small fuel filter should be all you need really. What you ideally want is vacuum hose as long as possible from each runner/manifold to a y piece. This makes it harder for each side to rob air/vacuum from each other as it has twice as long to get to the other runner/manifold.

[DannyP]

Should be fine for the vac tubes. I love JB weld, awesome stuff. You can also use brass tubing, available at any train/hobby shop.

Here is the suggested size for the vac reservoir:

http://www.autosportlabs.net/MJLJ_V4_ve ... _.28TPS.29

Anyway, it says 2 by 4 inches, so if it is 2" in diameter, then Pi * r^2 * h=3.14*1^2*4=12.56 cubic inches.

Your reservoir at 1.5 by 5 inches comes out at 8.83 cubic inches, probably not too big, should be OK IMHO. That is, as long as these are all round then my math works out.

[volksnut]

damn you all are good, and so flashy with the math
Here's the beast

[volksnut]

oh...I'm bad, I miscalculated on my own measurements (was being painted and I didn't want to go back outside...i.e. lazy)...the tank is 1 1/2" i.d. x 7 1/2" i.d. for a total of 17.6625 cubic inches....to big? So tonight I went ahead and made a new smaller one, I want a good vacuum signal and I want to get it right...it's now 7.065 cubic inches Here it is