When Tony and DV got together on the 318 project, I actually thought you should port the heads. Who knows! Great work sir, I've learned a lot from your work. Thanks
If I get to do this the way I want I will challenge DV, beat him and he will let me do the heads while I am there. I haven't done 318 heads in 30 years but I think I have a pretty good system figured out at this point. Thanks
I sure enjoy your efforts. I’ve bee following along with your channel for over a year. I do not agree with every method you utilize but agree that you and I must skin our proverbial cat in our own methods that we are most efficient with. I have many years of experience testing induction systems that were on National even winning and world title holding engines. NHRA Super Comp engines are a great apples to apples endeavor. Especially when freshening up existing combinations. The competitors in that class love consistency over all. None of them will complain when their combination comes back faster. They just want to know why. Same cam, heads, compression ratio etc. Why the sudden increase in MPH? If you increase airflow through an existing induction system by means of enlargement of that induction system the expectation of improved performance was dicey at best and one that I’ve never seen work out to anything more than hurt feelings over a labor cost on the bill. Each and every time there was an improvement in the airflow through the cylinder heads without increasing the size of the posts I could promise the engine would make more power and the car would run better. I’ve watched these progressions over and over again for several years. About all we had to go along with our port evaluation in both time constraint and money was a burette. We just made sure we filled up the port before we initially flow tested as then repeated after we made our modifications and corrections after our seat work. It was simplistic but garnered understanding on the existing. This way we understood what we have helped and hurt. It proved solid time and again. People, especially the most successful port developers of current get bent over this exact subject and spit all kinds of venom towards the subject. Complicating and contriving with each and every sentence. While I agree one should never make a comparison from one type of cylinder head to another in this method, if it is the same exact type it can yield a very strong indicator of what is and isn’t. That port energy density DV utilizes is one I will believe in as a result of my own first hand experiences.
Flow ball vid....YES....I have noticed blocking parts of a port with a long 3/8 burr changes flow, but the whole port seems to behave differently at different lifts, so pinning useful meaning to it has eluded me. Also gaining at one lift makes another lift loose some.....it is not simple at all. I really like how you fattened up the low lifts with this last cut. very nice.
Great work Charles. I would love to see the student challenge the master-this helps keep the master sharp! At the 6:10 mark in the video, there is a clear indication that the air does not wrap around the valve stem. Would tapering the valve guide to a point, similar to an airplane wing (leading edge round tapering to a point) help? Please reach out to DV, Andy or Uncle Tony-you need to be part of this 318 exercise! Thank you.
The guides are small and not sure how much can be gained there. Good point by the way. I called DV right after I published this video bit no answer still. I do not have Andy's or Uncle Tony's numbers but I am sure someone could show them this video. Thanks
@@servediocylinderheads Hey Charles, found myself thinking about that dead zone after the valve stem. Next time you're flowing this head, if time permits, I would like you to experiment creating a fin (with clay) after the valve to see if there are any gains. Also try rotating that fin toward the high speed & low speed side of the port. Thank you!
It is a good question. I do not know exactly which intake this will get so it may be 260 cfm intake or 328 cfm intake. It is just an exercise to Increase efficiency in an old design.
Film tip: put a yellow #8 or16 [camera] lens over that lamp. It will reduce output somewhat, but also the insane glare gets tamed. The human eye adjust to yellows easily. Also [and you'll have to play with this] if you are shooting with a device with an auto-iris function turn that off and manually adjust for greatest definition of the exact area you want to be the subject. I'm sure we all have taken some picture of something that was backlit, where the camera averaged things out and the intended subject presented poorly - that's an auto iris defeating your work. As for after the shot adjustments... sometimes reducing contrast, then adjusting brightness can make a mediocre shot seem normal.
As DV says, flow is not everything, its flow velocity, flow density, and discharge coeficiant, so, before you brag and have to eat humble pie, make sure you understand a lot more than you do know!! I will laugh my butt off if you lose! I dislike braggers like you, my brother in law was one. I dont regret him being gone !
porting 186 and 492 Amatör Wating in 292 Turbo heads thes have Swedich gai ported The 1 better we have hear in Sweden Grottis he be cald!👍Thes heads are better then The 186 and 492!
DV runs a business, don’t tell people to bother him , I run a business and know what it’s like to juggle doing the actual work and talking to people about stuff not pertaining to creating revenue it’s not cool.
@@servediocylinderheads Nice video Charlie. Im happy you madethe bigger port flow more 😀You wouldn't believe it, when i thought what a no back cut valve would do to this 492 head, then i came up with the idea to "test it". Thank you Charles, -juhana
![BOWKYLION - วิงวอน (ex-change) [Official MV]](http://i.ytimg.com/vi/cLdnZWDaO-w/mqdefault.jpg)
D.V. finally answered the phone! He thinks it is a good idea!!
When Tony and DV got together on the 318 project, I actually thought you should port the heads. Who knows! Great work sir, I've learned a lot from your work. Thanks
If I get to do this the way I want I will challenge DV, beat him and he will let me do the heads while I am there. I haven't done 318 heads in 30 years but I think I have a pretty good system figured out at this point. Thanks
This was an awesome video. I learned something with the flow ball. Please do flow ball video.
If I drive to N. Carolina I may be convinced to stop by and set your bench up. Ask the boys. Thanks
The speckled spots appear to be lifted from the initial bend, where the deposit is relatively heavy.
I sure enjoy your efforts. I’ve bee following along with your channel for over a year. I do not agree with every method you utilize but agree that you and I must skin our proverbial cat in our own methods that we are most efficient with.
I have many years of experience testing induction systems that were on National even winning and world title holding engines.
NHRA Super Comp engines are a great apples to apples endeavor. Especially when freshening up existing combinations.
The competitors in that class love consistency over all. None of them will complain when their combination comes back faster. They just want to know why. Same cam, heads, compression ratio etc. Why the sudden increase in MPH?
If you increase airflow through an existing induction system by means of enlargement of that induction system the expectation of improved performance was dicey at best and one that I’ve never seen work out to anything more than hurt feelings over a labor cost on the bill.
Each and every time there was an improvement in the airflow through the cylinder heads without increasing the size of the posts I could promise the engine would make more power and the car would run better.
I’ve watched these progressions over and over again for several years.
About all we had to go along with our port evaluation in both time constraint and money was a burette.
We just made sure we filled up the port before we initially flow tested as then repeated after we made our modifications and corrections after our seat work. It was simplistic but garnered understanding on the existing. This way we understood what we have helped and hurt. It proved solid time and again.
People, especially the most successful port developers of current get bent over this exact subject and spit all kinds of venom towards the subject. Complicating and contriving with each and every sentence.
While I agree one should never make a comparison from one type of cylinder head to another in this method, if it is the same exact type it can yield a very strong indicator of what is and isn’t.
That port energy density DV utilizes is one I will believe in as a result of my own first hand experiences.
I appreciate any input you could give. Thanks
Great work , I have a set of these I tried to make a build from but everyone I asked only came up with they are trash and should by new.
Hahahahaa. They really are just send them to me I collect junk!
Yes to the flow ball vid.
Flow ball vid....YES....I have noticed blocking parts of a port with a long 3/8 burr changes flow, but the whole port seems to behave differently at different lifts, so pinning useful meaning to it has eluded me. Also gaining at one lift makes another lift loose some.....it is not simple at all. I really like how you fattened up the low lifts with this last cut. very nice.
As I continue to develope the port for higher lift flows you will see me lose some of those low lift numbers.
Great work Charles. I would love to see the student challenge the master-this helps keep the master sharp! At the 6:10 mark in the video, there is a clear indication that the air does not wrap around the valve stem. Would tapering the valve guide to a point, similar to an airplane wing (leading edge round tapering to a point) help? Please reach out to DV, Andy or Uncle Tony-you need to be part of this 318 exercise! Thank you.
The guides are small and not sure how much can be gained there. Good point by the way. I called DV right after I published this video bit no answer still. I do not have Andy's or Uncle Tony's numbers but I am sure someone could show them this video. Thanks
@@servediocylinderheads Hey Charles, found myself thinking about that dead zone after the valve stem. Next time you're flowing this head, if time permits, I would like you to experiment creating a fin (with clay) after the valve to see if there are any gains. Also try rotating that fin toward the high speed & low speed side of the port. Thank you!
@@ts302 It is a good idea but I don't see a fin in these heads future. We will see if time permits. Thanks
@@servediocylinderheads Thank you!
Is it necessary to have a port that flows 300 if only 250 flows with the intake and carb installed
It is a good question. I do not know exactly which intake this will get so it may be 260 cfm intake or 328 cfm intake. It is just an exercise to
Increase efficiency in an old design.
Film tip: put a yellow #8 or16 [camera] lens over that lamp. It will reduce output somewhat, but also the insane glare gets tamed. The human eye adjust to yellows easily. Also [and you'll have to play with this] if you are shooting with a device with an auto-iris function turn that off and manually adjust for greatest definition of the exact area you want to be the subject. I'm sure we all have taken some picture of something that was backlit, where the camera averaged things out and the intended subject presented poorly - that's an auto iris defeating your work. As for after the shot adjustments... sometimes reducing contrast, then adjusting brightness can make a mediocre shot seem normal.
Good info. Thanks
Would you work on 340 heads?
Sure
@@servediocylinderheads how do I get in contact?
@@SeanOBryanZZ charlesservedio@gmail.com
As DV says, flow is not everything, its flow velocity, flow density, and discharge coeficiant, so, before you brag and have to eat humble pie, make sure you understand a lot more than you do know!! I will laugh my butt off if you lose! I dislike braggers like you, my brother in law was one. I dont regret him being gone !
@@PeggyParrow I would need to rewatch this video and see if I was bragging. I do know a 492 chevy head that flows 275 cfm is quite good. Thanks
DV put up a big block video earlier on exactly what you need to do to the port
These will not be getting epoxy in the ports, I am having issues getting csa.
@@servediocylinderheads what about raising the top of the high flow side slightly
@@craigchiddo2794 Good call.
porting 186 and 492 Amatör Wating in 292 Turbo heads thes have Swedich gai ported The 1 better we have hear in Sweden Grottis he be cald!👍Thes heads are better then The 186 and 492!
I thing you mean 292 turbo heads. They are better than these. Look up Larry Meaux he gets amazing flow numbers from 292's.
DV runs a business, don’t tell people to bother him , I run a business and know what it’s like to juggle doing the actual work and talking to people about stuff not pertaining to creating revenue it’s not cool.
A quote from D.V. from our phone conversation. " I don't want to work, I just want to do experiments all day."
@@servediocylinderheads Nice video Charlie. Im happy you madethe bigger port flow more 😀You wouldn't believe it, when i thought what a no back cut valve would do to this 492 head, then i came up with the idea to "test it". Thank you Charles,
-juhana