my home ported 241 pics
01-31-2006, 12:49 PM
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my home ported 241 pics my dad worked on these.. first time for anything like this.. i think they came out pretty good and pretty even
normal kitchen living room lighting in the pics, i will take some later with a lil brighter light and more upclose shots, seems thats what most of you do..
as u can see there a lil dirty from being out in his shop
normal kitchen living room lighting in the pics, i will take some later with a lil brighter light and more upclose shots, seems thats what most of you do..
as u can see there a lil dirty from being out in his shop
01-31-2006, 01:03 PM
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from what i hear everyone has a different opinion of how it should be done.. this is simply the way we did it.. not that were not open to suggestions that is fine, but ive read 100 different threads on this, and 100 different ppl didn't do 1/2 of anything the same way it seemed lol
oh and they are ruffer then the exhuast ports
oh and they are ruffer then the exhuast ports
01-31-2006, 01:15 PM
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i dunno.. depends on if we do larger valves or anythign else to them... not really sure around here where to flowtest at..
and ur right i can see my reflection in them.. my dad spent hours and hours and hours moving slowly removing material and polishing the **** out of them
we decided to leave the swirls in b/c itcheygomey's advice saying it would prolly make bucking and surging at lower rpms' worse to tune out ect
and ur right i can see my reflection in them.. my dad spent hours and hours and hours moving slowly removing material and polishing the **** out of them
we decided to leave the swirls in b/c itcheygomey's advice saying it would prolly make bucking and surging at lower rpms' worse to tune out ect
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01-31-2006, 02:21 PM
#9
Originally Posted by s346k
roughing the intake port(s) is to maximize fuel and air oxidation before it enters the cylinder. smoothing it out will delay the mixture and/or provide a poor mixture.
01-31-2006, 02:24 PM
#10
Where are my manners... The polishing job looks great! However to nit pick, how much porting did you do? The valve guides dont look like they were cut down too much, and the bowls look like they wernt opened up any. No doubt the polishing and smoothing will help you out, but it looks like you can unlock a lot more potential.
01-31-2006, 06:39 PM
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who did it The bowls were opened up to 90% of the anticipated valve diameter. The intakes and exhaust ports were matched to the gasket size via scribing the gasket. All rough bumps, three of them total were taken out. The combution chambers where polished to help eliminate preignition point at high heat. Both the intake and exhaust were opened about .8" on all sides. I left the swirl in to get a reasonable idle. I left some roughness on the small side of the swirl for better atomization.
Hopes this answers all the questions.
Engineer
Hopes this answers all the questions.
Engineer
02-01-2006, 11:46 AM
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Originally Posted by Engineer
The bowls were opened up to 90% of the anticipated valve diameter. The intakes and exhaust ports were matched to the gasket size via scribing the gasket. All rough bumps, three of them total were taken out. The combution chambers where polished to help eliminate preignition point at high heat. Both the intake and exhaust were opened about .8" on all sides. I left the swirl in to get a reasonable idle. I left some roughness on the small side of the swirl for better atomization.
Hopes this answers all the questions.
Engineer
Hopes this answers all the questions.
Engineer
i see my dad tracked me down on here
02-02-2006, 05:47 AM
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Those look amazing, I hope mine come out half as good. I"m just getting started on a set of 5.3s myself
Would you mind me asking what tools you used. And what type of bits and how many you went through for that kind of detail ?
Would you mind me asking what tools you used. And what type of bits and how many you went through for that kind of detail ?
