Ported 243s. opinions
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.
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.
Thread Starter
Staging Lane
Joined: Oct 2013
Posts: 74
Likes: 0
From: Plantation Florida
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.
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.
Last edited by TransAmTimmy; Jun 24, 2014 at 08:10 AM.
Thread Starter
Staging Lane
Joined: Oct 2013
Posts: 74
Likes: 0
From: Plantation Florida
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.
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Staging Lane
Joined: Oct 2013
Posts: 74
Likes: 0
From: Plantation Florida
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.
http://www.landspeedheads.com/blog/w.../CIMG58571.jpg
Take a look at these.
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.
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.
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
https://ls1tech.com/forums/generatio...6k-beware.html
https://ls1tech.com/forums/generatio...-can-help.html
https://ls1tech.com/forums/generatio...ted-heads.html
Thread Starter
Staging Lane
Joined: Oct 2013
Posts: 74
Likes: 0
From: Plantation Florida
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!
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
Thread Starter
Staging Lane
Joined: Oct 2013
Posts: 74
Likes: 0
From: Plantation Florida
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.
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.
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.
On The Tree
Joined: May 2004
Posts: 122
Likes: 0
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.
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.
There is a lot more you
Don't know or understand about inconsistency's in engine.. Just let the guy do his thing...
