But for just a mild street porting (without bridgeport), it isn't necessary to change anything in fuel and exhaust systems but it is advised, right?[/quote]

With a normal streetport you should be ok with the stock ECU. I had a mild port with a stock ECU, and it worked ok.

But for just a mild street porting (without bridgeport), it isn't necessary to change anything in fuel and exhaust systems but it is advised, right?[/quote]

With a normal streetport you should be ok with the stock ECU. I had a mild port with a stock ECU, and it worked ok.[/quote]

So I could start by doing a normal streetport, and a further improvement would be the exhaust system and so on? Could I do it myself or it's too complicated, because I've always been doing my mechanic things by myself, even engine rebuildings.



By the way, have you seen some benefits from you MSD 6A since you installed it?

Correct me if im wrong, but on a N/A motor, isnt a porting job almost a waste?

By the way, isnt Bridgeporting just a name that they use from the machine its done on? A Bridgeport machine?

umm n/a porting you can gain alot ! check this 6port out courtesy of judge ito



http://www.vosko.net/photos/sixports...reetport-1.JPG

No, it's called a bridgeport because you need to leave a bridge between the stock port and new port for the corner seal to go across. If you didn't have the "bridge" then the corner seal would pop out.

That's why I'm asking questions. But I think if you make a porting on the engine, intake manifold, you could get some useful HPs.

And bridgeporting is the name for the kind of porting. See for yourself there Bridgeporting

But for just a mild street porting (without bridgeport), it isn't necessary to change anything in fuel and exhaust systems but it is advised, right?[/quote]

With a normal streetport you should be ok with the stock ECU. I had a mild port with a stock ECU, and it worked ok.[/quote]

So I could start by doing a normal streetport, and a further improvement would be the exhaust system and so on? Could I do it myself or it's too complicated, because I've always been doing my mechanic things by myself, even engine rebuildings.



By the way, have you seen some benefits from you MSD 6A since you installed it?[/quote]

The street port with exhaust and intake mods would be a good choice. I'm still working out somne tuning issues, but the 6A definitely gives a stronger spark.

vosko, that's a pretty good one. How much HPs can you get this porting? Do you need to upgrade the fuel system to get good results?

MazdaTrix claims that porting isnt a big power gain to do to a engine, but if its out and being rebuilt, then it doesnt hurt, for N/A, has anyone done any dyno tuning to see what power gains can be had by porting alone versus no porting on a N/A? Ive always been curious to find out? They do Bridgeporting to outboard boat engines, and its called that because of the machine its done on, a Bridgeport machine can pretty much do any machine work when set-up properly, especially porting and milling and what not.