Allan_MA70 said:
I dunno. Every job he has done is like this. I might do something about it though. Ron
JT2MA71's Build. Dyno video on post # 1191
- Thread starter jt2ma71
- Start date
I dunno. Every job he has done is like this. I might do something about it though. Ron
Personally I wouldn't ever go for a knife edge in an aluminium head but if your porter stands by his work it should be fine.
group a supra
SPAWNING AN INTERCEPTOR
IJ. said:
i think we have different terminologys here on head work so wtf is knife edge on a head some one tell me so i can go oh that ahh we call it ????? :biglaugh:
and thanks for the pics ron
Knife edge is the sharp edge of that dividing wall between the two ports. I think I will round them off a little like I do on my manifolds. Ron
group a supra
SPAWNING AN INTERCEPTOR
jt2ma71 said:
ok we have no specfic name for that but i would also round them of if it were me ron
Sharp edges tend to cause turbulant flow not to mention are prone to fatigue and cracking so I always try and put nice radius's on parts I make where possible!
What Ron's pics don't show is just how smooth the port job is!
The Flash highlights any surface imperfections and makes them appear x10 I bet his are smooth as glass! (I noticed this taking pics of mine they look like they were done using a house brick in the porting tool but you can't "feel" them with a fingernail)
What Ron's pics don't show is just how smooth the port job is!
The Flash highlights any surface imperfections and makes them appear x10 I bet his are smooth as glass! (I noticed this taking pics of mine they look like they were done using a house brick in the porting tool but you can't "feel" them with a fingernail)
http://www.cardomain.com/ride/2042690/3
do those look too knife edged? thats my head currently. havent had the oversized valves installed yet. already have them, also valve guides were removed before porting and i have brand new bronze guides already installed. going wit hthe comp cam springs and ferrea titanium retainers. only things left to buy are the springs and cams. waiting on the group buy for new billiets. your head looks sweet though. i just hope mine flows like a mofo with all the work and money iver spent. lol.
do those look too knife edged? thats my head currently. havent had the oversized valves installed yet. already have them, also valve guides were removed before porting and i have brand new bronze guides already installed. going wit hthe comp cam springs and ferrea titanium retainers. only things left to buy are the springs and cams. waiting on the group buy for new billiets. your head looks sweet though. i just hope mine flows like a mofo with all the work and money iver spent. lol.
sweet. dont wanna end up with cracks and ish. lot of hrs went into that head. done by a good friend of mine, did the 5m head for my n/a buildup im gonna use 3 40mm dcoe's on.
IHI-RHC7 said:Ooh, you removed it from the turbo...
I take it that it will be nice and shiney when it goes back on.
Your car has always been the standard for a mkiii ron, I't great to see you taking it to a whole different level.
Um, look closer...:icon_bigg
Nice Ron.
I have not paid my machinist yet so I don't know. But he did say ~20 min worth of machining
Since I sold my old Tilton clutch/jun flywheel setup, I had to get a new one. I waited a while for this due to low supply of Carbon fiber, but now it's here Thanks to HPF for a great deal!!
Since I sold my old Tilton clutch/jun flywheel setup, I had to get a new one. I waited a while for this due to low supply of Carbon fiber, but now it's here
Thanks to HPF for a great deal!!
:bigthumb: This is the kind of buildup thread I would have... If I won the lottery! Awesome as always ron.