DIY Head Porting: How to shape around valve guides, swirl ramp, and blend seats
04-19-2005, 08:01 AM
#21
TECH Fanatic
iTrader: (14)
Join Date: Dec 2003
Location: Salisbury,MD
Posts: 1,729
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by M6HuggerSS
here are some pics
04-19-2005, 08:40 PM
#22
Originally Posted by DAPSUPRSLO
I would really like to know who did these heads and what kind of results were had. Notice the floor raised a ton and the port widened to look more like a c5-r/ls7 head.
http://www.tamparacing.com/forums/sh...ighlight=heads
04-20-2005, 08:27 AM
#24
TECH Apprentice
Thread Starter
Join Date: May 2002
Location: one step ahead of you
Posts: 338
Likes: 0
Received 0 Likes
on
0 Posts
96 Comp, thanks! Those are some of the best high-res pics of a ported head I have ever seen! I wonder how much of that design can be used on a 241 (01+ LS1) casting? They trimmed alot of material from around the valve guide and shaped it nicely. Thanks again for the link with those pics!
Thanks to everyone else that responded also. That was a great compilation of head porting threads on the previous page! Keep the pics and info/theory coming if you got it!
Thanks to everyone else that responded also. That was a great compilation of head porting threads on the previous page! Keep the pics and info/theory coming if you got it!
04-21-2005, 01:15 AM
#27
Originally Posted by Y2K2LS1
Swirl ramp
To take it out or not to? From what i've gathered it is there to create the turbulence necessary for low end torque. Is this right? Some take it out completely and have good peak results, some take about half of it out, and some leave it alone. After reading J-rod's timing thread, i'm wondering if the swirl ramp is necessary for proper high velocity in the combustion process to combat detonation. It could be there for a reason, to get the mixture to go to a certain area in the chamber? What do you guys think? Take it out or not? If some people take it out completely, there can't be a water passage under there right?
Thanks
To take it out or not to? From what i've gathered it is there to create the turbulence necessary for low end torque. Is this right? Some take it out completely and have good peak results, some take about half of it out, and some leave it alone. After reading J-rod's timing thread, i'm wondering if the swirl ramp is necessary for proper high velocity in the combustion process to combat detonation. It could be there for a reason, to get the mixture to go to a certain area in the chamber? What do you guys think? Take it out or not? If some people take it out completely, there can't be a water passage under there right?
Thanks
I say take out the swirl ramps. I took out most, but left a little because I didn't want to break through. I suspect they are there more for part throttle economy and emissions than for max power output operation.
04-21-2005, 02:08 AM
#28
heres the original thread on those raised runner TEA heads
https://ls1tech.com/forums/generation-iii-internal-engine/177448-my-new-tea-raised-runner-heads-pics-inside-not-dial-up-freindly.html
https://ls1tech.com/forums/generation-iii-internal-engine/177448-my-new-tea-raised-runner-heads-pics-inside-not-dial-up-freindly.html
04-21-2005, 09:59 AM
#29
TECH Addict
iTrader: (59)
Join Date: Oct 2004
Location: Vance, Alabama
Posts: 2,357
Likes: 0
Received 0 Likes
on
0 Posts
I have ported all kinds of LS1 heads and you can take the ramp out all the way on all of them, 241 included. Take the knot out were the rocker bolt is and reshape the guide bosses on intake and exhaust but be careful were the bump is on the exhaust side- it is there for coolant passage clearance and should only be blended into the roof of the port and no further. Do not touch the floor on either ports just sandpaper roll em. Hope you get the gains you are lookin for 
04-21-2005, 12:06 PM
#30
TECH Apprentice
Thread Starter
Join Date: May 2002
Location: one step ahead of you
Posts: 338
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Bo White
I have ported all kinds of LS1 heads and you can take the ramp out all the way on all of them, 241 included.
Thanks
