hope it works.

 

IDK...seems like it should. Mini Ram is similar.

 

Only thing I could see is that wetflow is weird... I doubt that won't work though.

 

can always change it if it doesn't work. try to do a wet flow test. was already going to do smoke test. have to make clear top first. this is fun stuff

 

The only thing with wet flow is that you need a similar fluid to test with... there are only a few wet flow benches I know of and frankly... they aren't necessary. I think its fine. A smoke test would be nice!

 

I wouldn't think that the distribution would be meaningfully worse than the stock intake is.

 

pictures show the slots and pattern for aluminum plugs. holes are plugged now. bottom part of manifold is done. started testing with top plate bolted on, with and without diffusers, modified diffusers. using parts from extra manifold. stock diffusers are a choke point. did a quick mod and they flowed as good as no diffuser. tested head, intake and throttle bodies assembled. at .500 lift they flow 190 cfm +. next try to radius the bottom side of top plate holes and clean up the bottom of top plate.
just remembered that I need to port match the head and manifold. I'm curious to see what that does

 

these numbers are for comparison not actual, just ballpark.
tested stock head, stock intake manifold, stock diffusers and stock throttle bodies
@.500 140 to 145cfm. @.400 140 to 145 cfm. stopped there. was the same with no throttle bodies with stock diffusers or modified diffusers.
dart head with ported intake manifold, with stock diffusers and stock throttle bodies
@.500 172 cfm, @.400 157 cfm
dart head with ported intake manifold, with modified diffusers and stock throttle bodies
@.500 196cfm, @ .400 172cfm
dart head with ported intake manifold, without diffusers and stock throttle bodies
@.500 172 cfm stopped there. this is surprising to me.
going to make a plexiglass top for smoke test. going to put a radius on the bottom side to see what it does.

 

port matched the head and intake manifold and got a little more out of it, @.500 205 cfm, @.400 180cfm

 

Making any big change, like adding or removing the diffuser, is going to change the distribution among the runners.

It's a pain to flow all eight runners, but it's necessary to see the true impact of big changes like that.

While the runner you are testing might have lost flow others might have seen gains.

Don't know if your testing only one?

Just flowing the manifold might make it easier to look at all the runners.

 

I've tested all the runners without top on.they all flow pretty close to the same. last test was just one runner with top and tb's installed. that all I had time for, but planning on testing them all. I have some clear plastic to make a top for smoke testing. I plan on smoke testing every runner with TB's installed on clear top.

 

Tested all the runners . raised the top .0625 , equal to a double gasket, they range from 200cfm to 215. going to try higher next. ended up not using diffusers. they seem to cause chaos

 

At some point one of use is going to have to send smoke through these diffusers to see what they do ....

 

once I finish up my block off plates I'll be in touch.

 

I made a plexiglass top today. need to order smoke machine. I have stock and modified diffusers. did test the top with a thick neoprene gasket for .25",.1875,.125. did.09 the other day. no meaningful gain after .125. for me a double or triple gasket will be good enough. smoke
will do smoke test once I get machine. did mess around with diffusers, they seem to concentrate the velocity to the center. I think the diffusers are to help atomize fuel when its cold. I want to run a mist with plexiglass, but that sounds dangerous.
I would like to test all runners at the same time with 2 different colors of smoke to see if they intermingle.
at this point the gains are getting smaller.

 

This, I want to see. I don't think that they do squat -from an owners perspective- except be a turbulence causing restriction.

 

Mike, check your mail.

 

There is an SY1 in Salt Lake for $600 if anyone wants it. Saw it on KSL tonight...

 

I know they restrict from testing.

 

Here is what I've learned so far at least for the manifold I ported and modified.
testing stock head , intake manifold with TB's stock diffusers flowed about 145 to 150cfm at .500 lift. use numbers as comparison not actual.
stock exhaust manifolds flow 100cfm. 100/145=68% 145x.26=37.7 37.7x8=301hp 301x68%=205hp. actually working on modifying stock exhaust manifold to get 170cfm, if I want to keep stock look. I believe a cleanup of the stock intake manifold runner. remove all the bumps, casting lines. there are a few choke points on the runners. that would be good enough for stock heads and cam. exhaust manifold is the #1 choke point followed by intake manifold with diffusers.
with dart head that flow 240cfm at .500. first intake manifold porting job with no radius entry, no top flowed 180cfm, with radius entry no top 210-220, with top 193-205.
when top is on the 4 inner runner flow more than the 4 outer runners. raising top helps outer runners get more cfm. grinding down the humps on the bottom side of the top seems to also help.
started experimenting with uneven diffuser wall heights to increase the flow to outer runners, it works but having tested all runners yet. evening out flow, would be best case scenario.
smoke test next week. I'll make a video