DIY Head porting
10-17-2005, 01:21 PM
#1
2nd Gear Member
Thread Starter
Join Date: Feb 2005
Location: SLC, Utah
Posts: 413
DIY Head porting
Hey guys I'm planning on porting my own heads myself. Anyone got any experience with this? Any tips are appreciated. BTW if your just gonna tell me to get it professionally done don't post your opinion please. I've already decided that I'm going to do this myself.
10-17-2005, 02:00 PM
#2
5th Gear Member
Join Date: Jun 2004
Location: fl
Posts: 2,485
RE: DIY Head porting
I've heard that it's very difficult to DIY and get anything out of it other than practice. I have also heard that you can end up losing hp if you mess something up. If you have the time and patience to DIY then go for it just be careful and let us know how it works for ya. Have you got a PI intake yet? Maybe you could get that and try porting that too. That way if you bought the PI intake you could practice the porting on the old intake and then then work on the PI. Good luck sk8terdude
10-17-2005, 02:59 PM
#3
2nd Gear Member
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Join Date: Feb 2005
Location: SLC, Utah
Posts: 413
RE: DIY Head porting
Great idea I didn't think about that. in fact I have 2 non PI intake manifolds I could practice on. Also I'm getting a set of heads from a friend who just did a swap on a truck. So I'll have some practice. I'll be very conscious about the quality of my practice heads. I want to get this done right and if I don't think I can do it I'm not afraid to admit it lol. I've been reading tons about it and so far it seems like it might be fun.
10-17-2005, 03:37 PM
#4
4th Gear Member
Join Date: Sep 2005
Location: AR
Posts: 1,925
RE: DIY Head porting
look up a diy flow bench you can build one pretty cheap that will help a lot. but nothing is gonna be the same as experience you don't have a set of cast iron heads designed in the 60's you have a set of fairly high tech heads that are computer designed to give the most they can. if you don't know what you are doing you can really screw things up.
10-17-2005, 03:42 PM
#5
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Join Date: Feb 2005
Location: SLC, Utah
Posts: 413
RE: DIY Head porting
Well so far from what I've read... The idea of porting the heads is to increase CFM. Not just by making it bigger but by removing obstructions and sharp bends. Going to big can reduce airflow speed and lower the CFM but not going big enough is restrictive. If I can get a benchflow I'll incrementally port untill I get a desired CFM at .550 lift
10-17-2005, 04:37 PM
#8
Pro. B.S. caller outer
Join Date: May 2004
Location: IL
Posts: 9,644
RE: DIY Head porting
ORIGINAL: sk8erdudex
what do you mean tight lipped? Like they don't share their secrets? or they just don't know
what do you mean tight lipped? Like they don't share their secrets? or they just don't know
10-17-2005, 04:48 PM
#9
2nd Gear Member
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Join Date: Feb 2005
Location: SLC, Utah
Posts: 413
RE: DIY Head porting
I'm a very science oriented guy. I don't only like to know what works but I want to know how it works. That way I can improve it. So far the best sounding method I've heard is extrude honing.