Cylinder head wizards inside please...
Thread Starter
TECH Apprentice
Joined: Jun 2002
Posts: 355
Likes: 0
From: Earth
Cylinder head wizards inside please... Decided to do my own LS6 cylinder heads this time and so far, here's where I am at...
Intake - 223 cc
1) Removed stud protrusion and smoothly blended the runner wall the bowl area
2) Blended and radiussed valve the guide boss
3) Radiussed and swirl vane
4) Gently rolled the short turn radius to the floor
5) Blended the bowl evenly to runners
6) Blended the casting lines and evened up the walls
Exhaust 82 cc
1) Blended the bowl evenly to runners
2) Gently rolled the short turn radius to the floor
3) Blended and radiussed valve the guide boss
4) Blended the casting lines and evened up the walls
Help/Questions
Runners
All tips appreciated - my main question is...
....How much more volume, if any, should I consider - and if more, where do I remove the material
Combustion Chambers
I haven't touched these yet but I will bolting these on a 4.100 bore
Help & Questions
- Besides blending, what tips can I get on the intake valve wall - especially as it approached the cylinder?
Intake - 223 cc
1) Removed stud protrusion and smoothly blended the runner wall the bowl area
2) Blended and radiussed valve the guide boss
3) Radiussed and swirl vane
4) Gently rolled the short turn radius to the floor
5) Blended the bowl evenly to runners
6) Blended the casting lines and evened up the walls
Exhaust 82 cc
1) Blended the bowl evenly to runners
2) Gently rolled the short turn radius to the floor
3) Blended and radiussed valve the guide boss
4) Blended the casting lines and evened up the walls
Help/Questions
Runners
All tips appreciated - my main question is...
....How much more volume, if any, should I consider - and if more, where do I remove the material
Combustion Chambers
I haven't touched these yet but I will bolting these on a 4.100 bore
Help & Questions
- Besides blending, what tips can I get on the intake valve wall - especially as it approached the cylinder?
TECH Addict
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Re: Cylinder head wizards inside please... You should consider bench testing your work before carrying on. I have 221cc port at this time that flows 300cfm at .550" with stock valve. Flow climbs as high as 317cfm with different valves at .600" but i am still working out this aspect of port work. Exhaust looks like it should be killer on flow, but i havent reached LS1 exhaust flow yet with my LS6 exh. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
<small>[ December 26, 2002, 05:23 PM: Message edited by: LS1derfull ]</small>
<small>[ December 26, 2002, 05:23 PM: Message edited by: LS1derfull ]</small>
Thread Starter
TECH Apprentice
Joined: Jun 2002
Posts: 355
Likes: 0
From: Earth
Re: Cylinder head wizards inside please... Thanks, I will be flow testing in another week..
Any hints on the combustion chamber unshrouding..
Also, what does everyone do about the bolt that protrudes into the intake runner? Is a shorter bolt used or the longer units ground down?
Any hints on the combustion chamber unshrouding..
Also, what does everyone do about the bolt that protrudes into the intake runner? Is a shorter bolt used or the longer units ground down?
TECH Addict
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Re: Cylinder head wizards inside please... I would set head on block to be used and scribe bore size on head, than determine amount your able to relieve around valves. As far as rocker bolt i would seal it with teflon pipe thread sealer and dont worry about protrusion in to port, its very minimal. Let me know your flow results.
