Ive heard that if you put a screen over the hole in your intake it will increase performance? Anybody else ever heard this?

 

I am willing to bet no gain, think about it. It is a restriction, you know like less cfm. Also you would have to make sure your throttle plates didn't hit it. A lot of the 4th genner's de-screen their mass airflow sensors, why would we wanna put them in? Just my $.02 I wouldn't try it....

 

I've heard all kinds of weird stuff over the years. I probably heard this one before, although I don't remember.

Long story short.... teeny bopper trick stuff. Forget it. Nobody I know goes fast with stuff from their back porch installed in their intake.

If the carb is sized correctly for the application it will atomize fuel just fine on it's own, no "help" necessary further down the intake

 

Right thats what its supposed to do atomize the fuel I think it suposed to give you the efect of a tunnel ram with just a regular intake.

 

Coincidece????

After reading this post, and posting here, I was looking through Jeg's. I found a set of intake gaskets with built in screens...huh

BamaZ28

 

Hot Rod ran an article on this years ago. (and I mean YEARS) It is only for carb. engines and yes it is to atomize the fuel better. That is when eldebrock only had the torquer and performer manifolds. Manifold technology has change soo much since that article that I wouldn't think that they would work on some of the newer manifolds. Also they said in their article that the screens hampered upper RPM performance. (sound familar). I think that there wouldn't be any benifet on tpi engines since the fuel is atomized right at the port anyway. Just another way for a gasket manufacture to make money.

 

LOL I should have mentioned that Im taking the TPI off and putting an 870cfm Double Pumper on so thats why Im asking I just thought the classic tech guys would probably know more about this sort of thing than the 3rd gen guys thats why I posted it here.

 

The best thing you could do is to de-burr and grind off all the casting marks inside your manifold and smooth it out. I know it helped out a lot with the performer manifold I stuck on my 72 back in 1984 and the manifold on our race car now is done the same way.

 

You mean just port it with a dremel tool and one of the little cone-shaped port fittings?

 

I used a die grinder with a cutting tool to get it roughed out and then hit it with a sand paper cone to smooth everything out. A dremel will work, just take you a little longer but at least it will get the job done.

 

you'll need the flex-shaft extension for a dremel if you want to do any good.
Seriously though, unless it's aluminum, don't use a dremel - it just doesn't have the power.

 

Actually I've read 2 test articles where these "screen in the intake manifold gasket" gaskets were used and in both tests the low and mid range torque was greatly increased, but at the same time the top end hp was reduced . It's a matter of what's important to you .

 

I dont suppose any of you could give me a link to any of these test articles so i could read up on it?

 

When I said years ago I ment YEARS The article was written back in 84-86. I'm not too sure exactly what year but it was when I was running my 72 rs and I though about doing that but I got engage and a got real job and all the fun came to an end . 86 was the last year I had my 72 at the track.

 

I agree.