Intake spacer

[2.8RS]

Some of you may know that the 2.8/3.1 is very restrictive where the UIM and MIM come together. Its like a 135* change in the runner correct. Could I put in a spacer that would fit between the two manifolds and increase the flow possibly by decreasing the angle change so drastically? It may only be a 1/2" thick, would that help. What would be a good material. I'm looking for any opinions/tips, I was thinking maybe making it out of an old cutting board, so it would be some sort of thick plastic I can take a dremel to.

[sharkey]

its worth a shot. one of the guys here has some thick aluminum flanged he had made up that could be used for this. you would be best off to do some port work to smooth that transistion out when you put the spacers in.

[ForcedFirebird]

one of the guys here has some thick aluminum flanged he had made up that could be used for this.

Yep, I gave 10 sets to Dave to make his manifolds. I think he may have a few sets left, otherwise I could see if I can dig up the program (if not, I'll re-write it). I could cut them out of just about anything you want (except carbide ).

[2.8RS]

I'll do it by hand, I have a spare intake here and it will give me something to do this weekend. I'll see if I can find an old cutting board. It will probably be a 1/4" spacer.

[ForcedFirebird]

Let us know if does anything on the butt-dyno . You might save some heat if you use plastic, too.

[2.8RS]

Let us know if does anything on the butt-dyno . You might save some heat if you use plastic, too.

lol, I'll let you guys know if I feel anything.

[2.8RS]

I bought a cutting board to do this with and the palstic was melting when I was cutting it with a jigsaw. Now I have to decide if I want this material as a spacer and if it would put up with underhood temperatures.

[ForcedFirebird]

I bought a cutting board to do this with and the palstic was melting when I was cutting it with a jigsaw. Now I have to decide if I want this material as a spacer and if it would put up with underhood temperatures.

Just like machining, it has to be cooled while cutting

[2.8RS]

Just like machining, it has to be cooled while cutting

I tried a few different methods of cutting the ports and found a way to do it without melting alot of the material together while cutting it. I have them made and am about to put them on the car.

[2.8RS]

Just took it for a test drive an noticed a little bit more pickup but nothing to get excited over. The intake probably flow a little better now. I'm going to take the spacers off and refine them a little bit and I don't really trust them b/c they may melt from heat. Now I'm worried about my window, it won't roll up all the way...