Burnin_streets

Does anyone have templates for porting of a 2nd gen NA engine? I know it sounds cheap, but I don't want to have to buy the ones from Pineapple Racing, don't have that kind of money now, with a rebuild in my immediate future. Is there a way we can make our own or is there anyone that can hook me up?

whereiscarmensandiego

your best bet is to buy them people who buy them dont typically sell them becasue they are reusable.

RX7Tuner.

I went to the Mazdatrix website and printed their pictures of porting. I measured the ports in the picture based on a known referance point and was able to draw my own to scale.

AreExSevenProject

iTrader: (1)

racingbeat.com

RX7Tuner.

RB's are crappy because you have to cut them out. Pinnapple's are nice and reusable.

manslayerx9

go with the pineapple ones. they are pre cut out, so thats one less thing to screw up. and they arent that extreme

Aaron Cake

iTrader: (1)

Porting templates are presumably the result of many hours of labour porting engines, building them, testing them on the dyno and then starting all over again to try and improve. Any commercially viable porting template will have hundreds of hours of labour over many years, and a lot of dyno time and testing time invested. This is why they cost about $50 a piece. What you pay is totally reasonable for the result of what you get.

It is wrong and immoral to take a commercial porting template and put it out on the Internet for all to see. Hopefully no one actually does that.

Though getting the port shapes from the Mazdatrix website and then scaling them up is VERY creative.

vrracing

iTrader: (1)

Unless you're a machine shop the template will be the least of your costs. The burrs, sandspools, arbors, pneumatic die grinder and dykem will set you back a lot more than the templates.

coxxoc

iTrader: (3)

If you can't afford to spend $50, forget rebuilding the engine. It will cost about $50 just in materials used during porting.

Pineapple has good templates pre-cut as mentioned previously.

Josh

Burnin_streets

My buddy's dad owns one. He's got me covered!

I can afford barely enough for the engine rebuild, I will not be able to afford the 100+ for the templates for a street port. But again, since I'm ripping the engine apart, I wanted to see if I could port it. Looking like not. Thanks for the .02 tho.

AreExSevenProject

iTrader: (1)

If you cant cut out a template then you are going to have much more problems trying to get a new housing...after its screwed up

Valkyrie

Ditto. Don't streetport if you don't have the cash to buy another housing, the skill to cut out a template precisely, or the foresight to mask off your housings to prevent skip marks.