No large gains??
 

So after doing a little research and reading some info on Mazdatrix.com webpage

I guess they dont get many gains from porting a 6 port N/A (86) engine

How true can this be? I need to hear from some of you guys that HAVE ported your 6 port engines

Is it really true that the power gains are lackluster? I want to port her, but if the gains are minimal. I might just port match all of the intake manifolds instead and get a decent 10-12 HP

Thanks guys.

p.S normally how much power could you get from street porting an engine? 10? 15? 20 HP?

most re-builders say about 25hp from a street port.

Re: No large gains??
 

I read the same page on their site, and I think the biggest problem they have is that they don't like to cut out the diffuser in the exhaust ports, and I guess that it's more work than doing a 4-port engine. I guess their returns just aren't as good.

http://www.vosko.net/photos/porting/...reetport-3.JPG

One of the Judge's port...theres several options....bridge, etc.

shows a nice street port on the 6 port housing.......ive heard 25% more power. This is from Vosko's page and the port is by Judge Ito.

yeah 20-30 hp!!

If that was to me...I'm saying I've heard the same. :bigthumb:

Its going to depend on what other mods too...ie exhaust setup...

Wow...thats some major porting....

just get a TII swap and fa-get-abouuut-it!!

agree with ya..so much easier to make big hp with a turbo..dumping money into a ported motor, all the goodies with an n/a and I know i still wouldnt be satisfied in the end.

Ito's ports are awesome!