Porting

 

Few more

 

More ports

 

Your bowl looks too small still. How much did you remove from the short turn? Why did you remove the swirl ramp? Is this for a race car?

 

You have already ruined your set of heads.

 

Nice looking heads, but I've always wondered how a hand porter can have conistency over 8 runners? I mean how can you make sure that every single runner is the same EXACT shape and size?

Without that, you can have one bigger, one longer, one shaped differently and end up with a different amount of air and velocity in each cylinder.

Not knocking down your work as I'm sure you've put a lot of effort into it, just I personally can't see how such heads would be consistent across the board.

 

I agree there not. I only took the casting off the runners . I welcome all opinions. I'm partially finished with the runner I have not finished the bowl or swirl ramp yet.I will post more when I'm done.

 

I haven't touched the bowl much yet. I took the casting and rocker stump off and I haven't started on smoothing anything else. I was told to leave the intake some what rough. It's for a nitrous car. Street strip car. The porter here said either knife edge the valve boss or smooth it out. I did want to attack the bowl without more guidance. My goal is to shape the valve boss like a bullet and smooth out around it.

 

also I didn't change the shape of the ports and I didn't touch the short turn. I am going to take them to a porting shop after I'm finished and flow test and see how I did.

 

Open up the bowl to 1.8". Don't go crazy on the valve guide boss just give it a basic shape and leave a good amount of material to support the guide. Pull the short turn back a little bit it will only help you.

http://www.landspeedheads.com/blog/w.../CIMG58571.jpg

Take a look at these.

 

I didn't mess with the bowl I just shaped the valve guides and took the stomp out good luck man

 

I really don't think it's all that important that every single port flows the exact same. I think that's just a gimmick selling point for companies offering CNC machining. I think that you can get every intake port flowing the exact same at every lift point, but in a running engine, the distribution characteristics of the intake manifold is going to throw it all out of whack.

 

Best thing you can do is try to find some books on porting and get advice from guys who know what they are doing. There are a few members on here who know what they're doing but most of the advice you'll get on here is just criticism and bullshit! I always considered hand porting a "shot in the dark" without a flow bench unless it's someone who has ported and flowed these heads and know what the ports like and don't like in relationship to flow. Good luck and you are absolutely right, the only way to learn is do it!

 

This topic has been covered a few times. Read up and look at some of the pictures others have posted up in other threads. Some of the DIY home porting videos on You tube have a few good pointers to help you out.

https://ls1tech.com/forums/generatio...6k-beware.html

https://ls1tech.com/forums/generatio...-can-help.html

https://ls1tech.com/forums/generatio...ted-heads.html

 

I agree, people are always so quick to shoot someone down for thinking outside the box. I'll try it and test it out, hopefully all is well. I'll definitely check out some more info before tackling any more. Thanks for the support.

 

That's what I did dude tried it tested it just didn't put it on a bench but car is very strong with very good number no stumbles or anything

 

Good to know. I'm going to finish these heads up this weekend and get them tested. I'll update as I go along if I end up having problems opens so on. If I screw up it have another set of 241s and my old 806s if it really comes down to it.

 

Its not as dramatic or hard as you make it out to be.

 

There is a lot more you
Don't know or understand about inconsistency's in engine.. Just let the guy do his thing...

 

You have already ruined your set of heads.