Well this is the deal i have a some porting temps.. neiter me or my dad really wanna mess with porting the housing due to possible screwing up(Please do not try to convince me to port the housings cuz it aint happeing) so i wanna just port the irons covert to a 4 port and a street port.. my question is it ok to just port the irons. will it mess with my relability or fuel lean/richness... i have my exhaust diffusers removed..


well lemme know what you think ... any input is awsome.. im just a little nervous about it if it will lead to more problems...





thanks in advance


Dustin

 

Its gonna mess with your fuel needs a bit, yes, but an Safc will take care of that problem nicely on an N/A.

and yes.. you can just port the irons, its called intake only.. its kinda dumb not to port the rotor housings on a turbo car.. but, on an N/A, a lot of guuys do it.

 

Hey... you should port the exhaust too. WAY BETTER! The ONLY way to go.

j/k... lol.

On a serious note; what templates are you using?

 

They're some templates that I got a while back and slightly modified with the closing edge on the secondary and primary port.

Basically it's a very mild primary port for idle issues and the secondary combines the secondary/aux together with a later closing edge than an average streetport.

I run this same port with a wideband and more mods than felix, and stock fuel is fine for me except in the very top rpm range but felix shouldn't have a problem with running lean at all. An SAFC would be a good idea eventually to smooth out the AFR's and get more power.

 

to get the most out of the engine i would suggest doing both the irons and rotor housings but that is just me, i'm sure you would be just fine porting the intake but as i said, for it to be worthwhile i would do both.

 

felix: dont bother. unless you have some extra irons laying around to practice on and get good at the porting, dont even bother with it. i'd maybe smooth out the RUNNERS of the ports, but simply enlarging the ports doesnt do as much as lots of people on this forum think.
i wouldnt bother with the exhaust ports either. the stock exhaust port flows alot, especially for an NA (with the diffuser out too of course)

 

Whaaaaaaa?

Porting does plenty good, even if it's n/a.

 

what if you port it up a little too high and the corner seal falls into the hole? what if you port the exhaust out and dont bevel the closing edge?

i agree that porting is great (even though i have very mild intake ports and stock exhaust ports) if you have a good template and you've done a couple before.

 

The primary port of his is very mild. The secondary is nowhere near running into anything, no problems are created from it. Like I said I got a template and slightly modified it, and I've tested it out it's fine. If he does it the same way as it's set out there should be no problems. And it's pretty damn hard to position a port for the corner seal to "fall" into it lol. Believe me it's nowhere near being close to that.

 

hey i agree, but who knows what could happen if you've never pored anything and you dont have a template?

 

steady hand and the proper tool and you can do anything, look at what he's done already . . .
i think he capable of porting, just take it slowly . . .

 

It's a lot easier to screw up the irons then the housings. Especially those primary ports. Not much casting area.

It's pointless to port the intake ports without doing the exhaust as well.

 

im getting everything ported in mine probably on the mild side, but i just wish i could have a half bridge or an extended port. im just hoping to make 200hp @ the flywheel somehow with alot of mods

 

If he removed the diffuser, isn't that enough of a mild exhaust porting by removing the obstruction?

 

Diffuser isn't an obstruction. At least, not a significant one.

 

it will make the exhaust louder and give u a little more top end