I did these last December and had it running for 1000 miles, but I wasn't impressed at all with the power it was making, so now I'm going turbo. I tore down the motor pretty much just to check and what kind of shape everything is in. The templates that I used were the racing beat streetport templates for the intake and the exhaust. I'll be using these for a 12a with a turbo with N/A. I'm going to be putting the engine back together tommorow and before I seal it up I just want to get some input from the experts on wether I the ports need some more work to reach there full potential or if I should go bigger or whatever. Basically I just want some input. Im planning to run about 6-10 lbs of boost and I would like to put around 240-250 to the wheels (if thats possible).

 

Porting looks good. I would do more smoothing on the intake, all the way to the intake mani and you need to chamfer the top edge of the port. That nick looks like the side caught it. The exhaust port needs a 2 mm chamfer all the way around it too.

 

These pics were taken just after I ported it. So that nick was probably just a bad slip with the dremel. Should I go bigger if I want to meet my 250hp. I don't want to start a huge discussion but would it be a good idea to remove the exhaust sleeves. Any input would be appreciated since I'd lie to get it bac together tommorow.

 

Looks good. What did you mark the iron with, as far as templet? What kind of tip will i need to port my iron?

 

I used a black sharpie and something pointy to mark it, I used an awl. You should use a carbide tip and some grinding stones to smooth it out.

 

You can get 250, without the intake porting, that's more the turbos job, but the porting makes it easier. Turbo, intake and exhaust will have more affect on final hp #s.

 

ANd a good tune, dont forget that.

 

The key to power is making the bowl in the port into a scateboard ramp. and it looks like you didn't touch that part of the port. Also I don't know if you opened it any earlier, but when you do I like to make sure it's back cut nicely. I like a knife edge.

 

what so instead of say..
having the plate flat on the ground and cuttin the port verticaly is a no no?
ya have to make it like you explain curving from top outer rim of the design of port curve it like a ramp to the old curve of the port
is there a certian mathmatical angle it has to be how dramaticaly does the curve affect like for example to steap less hp gradual angle better performance lol im kinda nat makin sence i think


and chamfer is like smothing the front edge of the port so it creates a angled edge instead of a sharp edge?

 

A smooth 90* curve, ot a hyperbolic one works best for port flow. You got the idea on the chamfer. I start with a 45* angle on mine, then do a tiny radius on the face of the iron.

Fly, you're in America now, even if the Congress and House is too stupid to declare English as the official language, make use of it. lol. Just giving you a hard time. I have fun deciphering the dingo lingo somedays.

 

porting looks fine .. it will make great power with some boost