Check out my first attempt at porting, any suggestion or tips?

[4pistons]

Your porting looks pretty good, but you can cut the time WAY down with a carbide bit. You won't remove too much on cast iron as it's pretty hard and won't get away from you. Aluminum is another story. It's very easy to get carried away if you're not careful.

I ported my 14B aboiut six years ago in about an hour including the sanding stone cleanup and I ported it down as far as I could reach. There's no way my hands could take four hours of porting!

Rick - '91 GSX

 

[TurBoGs-T]

Originally posted by 4pistons
You won't remove too much on cast iron as it's pretty hard and won't get away from you.

Are exhaust mani's Cast iron??? Cause all mine did was turn red hot and melt a little then stiffen right back up.

 

[4pistons]

Red Hot??? What the hell were you using? A good carbide bit cuts cast iron with no problem. If you move the bit around, back and forth, in controlled movements nothing even gets warm.

Rick - '91 GSX

 

[hellotbone]

I agree 1 hour with an air rotory tool and a good Im talking 30 dollar carbide bit and you can do it easy. I did mine in 1 hour with carbide and cleaned up with a stone.

 

[Larry L]

Well the Turbo itself took me an hour, but I ported my exaust manifold, O2 Housing, and waste gate flapper door and passage. Around 3 hours to do it perfect. But I'm rather anal about my siznitch. Nice port job..Hope you get many strong pulls from it

I also ported my head. And 4 pistons is right. Aluminum is easily over done. I destroyed my first bit because the aluminum melted into it. But then I used a wax compound given to me by Valley Tool in Hemet, and the Aluminum did stick any more.. I just used a 15 second cut then dip into the wax method.

 

[Nautica985]

Could you just completely remove the divider wall between the wastegate and the turbo outlet to get rid of the boost creep? I have seen this done with bigger turbos.

 

[92tsifwd]

I would not remove the devider because it will create turbulance and the turbo will not perform as well. The problem is with the tiny flapper size and wastegate whole and the way the exhaust enters the wastegate not the devider. There are plenty of procedures on porting. Just do a search.