Ported top end: Port Match or bolt it on...

[rkreigh]

yes for sure carbed and FI motors respond a bit different. the port was beveled until it was enlarged to try and match it, and then it was sharp again so it was "re rounded"

the injectors are above the port, so it's at least similar

the best thing for me is experimenting and learning what theories are proven or prove false

kenny duttweiler said it best, "give the engine what it wants and needs for best power"

that guy has "disproven" a bunch of "theories" just like Jon Kasse

[ALZR1]

[QUOTE=rkreigh;198869]yes for sure carbed and FI motors respond a bit different. the port was beveled until it was enlarged to try and match it, and then it was sharp again so it was "re rounded"

the injectors are above the port, so it's at least similar

the best thing for me is experimenting and learning what theories are proven or prove false

kenny duttweiler said it best, "give the engine what it wants and needs for best power"

that guy has "disproven" a bunch of "theories" just like Jon Kasse[/QUOTE ]


Sorry going off topic,do you Remember his Grand National.

AL.

[rkreigh]

sure do. I just sold my turbo buick this year after owning it since 1987

gave that car away. a 10 sec ride for 8k

[Paul Workman]

[QUOTE=ALZR1;198875]

Originally Posted by rkreigh

the best thing for me is experimenting and learning what theories are proven or prove false

AL.

A-men!

(AND, we seem to have a high % of Z drivers up here that aren't afraid to get some aluminum splinters in their fingers!!)

[LGAFF]

My takeaway from this is that textbook theory rules all, I mean with solid engineering and following the rules why test things in the real world.....right, right?


http://www.youtube.com/watch?v=9h5twfENvgg

Oh, but that could not have really happened, I mean they followed all the rules!

[LGAFF]

But I am sure that was a fluke....

http://www.youtube.com/watch?v=tUt-JVuiNEA

oh

[LGAFF]

This is a good article to read on the new Boss 302 intake....

A few points to take away:

*Flow bench results vs on the car are two different things....
*Real world testing is critical
*Trying things out of the normal is an essential....

http://www.mustangandfords.com/car-r...d-mustang-302/

[Schrade]

Originally Posted by rkreigh

the injectors are above the port, so it's at least similar

If the injectors are blowing fuel DIRECTLY into the 'nasty eddies / standing wave', created by the ridge, at the abrupt 36mm-to-32mm juncture, then maybe fuel atomization is increased, over and above the 'normal' level of atomization.

Whereas, if the IH port was tapered, with no turbulence, but total laminar flow, that might explain this exception...

???

O2's MIGHT show this as reduced HC's...

Ideas? Opinions?

[XfireZ51]

OTOH Chuck you could end up w reversion causing fuel
to drop out of suspension and a loss of velocity. I think about the flaps on the wing of a plane. What happens when it is lowered into the airflow?
So would I port IH and Plenum while not port matching the heads? Sure. Still worth some power. Does it flow better than port matching? You'll need to prove that to me.

[LGAFF]

*Again important to define port matching:

*port matching to 36mm
*port matching to 31.5mm=33mm(with bevell), which means a much smaller runner tapering from 36-31mm