Intake rubber grommets

[auto.guru]

so these intake rubber grommets....
http://www.facebook.com/photo.php?fbid=310775612276613&l=6388896df3

i heard rumors of cutting out the middle rubber on them to allow of more air flow through the intake. im unsure if its just a myth or there is some truth behind it.

 

[rubydist]

that would just allow more air moving in the crossover tube, which is not needed.

 

[kevinspann]

The hole in the crossover tube is pretty much that size anyways.

 

[19sho90]

The cross over tube is more for extra air.

 

[hawkeye18]

Er, not really...

The crossover tube serves the same purpose as an H-pipe in a dual exhaust. Its job is simply to equalize pressure pulses between the two tanks. If everything is working right, very little air should be flowing through the crossover tube.

 

[kevinspann]

The crossover toob is where the supercharger is hidden.

 

[19sho90]

Er, not really...

The crossover tube serves the same purpose as an H-pipe in a dual exhaust. Its job is simply to equalize pressure pulses between the two tanks. If everything is working right, very little air should be flowing through the crossover tube.

Sooooooo.......Extra air?

 

[SuperHO]

...extra air with absolutely NO performance gain whatsoever.

 

[hawkeye18]

Sooooooo.......Extra air?

In the sense that commas are extra ink on a sheet of paper.

 

[19sho90]

In the sense that commas are extra ink on a sheet of paper.

I like your thinking...

 

[Racer X]

Sooooooo.......Extra air?

No.

Pressure equalization.

To simplify, the crossover tube makes sure that the air pressure inside of the plenum tanks is consistent... is the same between the two. The crossover tube does nothing to admit additional air into the intake.

 

[AREA 91]

You can carefully grind out the ridge in the middle if you want.
It would be more productive to do the 6 snakes instead of the crossover.

 

[19sho90]

No.

Pressure equalization.

To simplify, the crossover tube makes sure that the air pressure inside of the plenum tanks is consistent... is the same between the two. The crossover tube does nothing to admit additional air into the intake.

I understand. I'm being a smart-ass.

 

[LOUDSHO92]

You could just replace your dry cracked intake couplers: SHO Source

 

[Racer X]

I understand. I'm being a smart-ass.

Smart-ass tags. Use them.
</smartass>

 

[auto.guru]

You could just replace your dry cracked intake couplers: SHO Source

dont need to. these are brand new

The crossover toob is where the supercharger is hidden.

LOLLOLOLOLLLOOLOOLLOLOL

thanks guys. at least we figured out my "myth" lol

 

[SuperHO]

if I may...

a few years back, some folks in north carolina thought power could be had by custom building a tubular steel crossover tube. I volunteered my 92 as a test bench, and a few weeks later I received a weld spatter covered home-built crossover tube. It used a couple of pieces of coolant hose to mate up with the rest of the intake and looked like complete dog shit, but being completely open, it removed any possibility of a restriction on that end.

long story short, it didn't do shit, and I can't for the life of me remember what happened to it.

has anyone ever tried capping off the ends of the plenums to see if it would be any sort of benefit/detriment?

 

[hawkeye18]

The crossover toob is where the supercharger is hidden.

Make sure you change the oil on it every 60,000 miles.

 

[kevinspann]

Make sure you change the oil on it every 60,000 miles.

It's whining pretty good right now, I think I'm overdue.

 

[rubydist]

as I recall, the first prototype SHO engine did not have the crossover tube.

they added it because they thought it was important or because the styling guys liked the look - take your pick.