turbo 1300 to turbo 2300 conversion

[dsrace]

with an adapter contouring it down to the lower of course it turns sideways. i am prob over thinking this but worth a try.

[fabr]

Once you hit boost,it won't matter much.

[dsrace]

here is a pic of the stock upper on a d port head like the big giraffe necked 90" that enemy posted a pic of. here is a pic of the stock and a ported one most do right off the bat. i wonder if it reduces velocity some for throttle response??

[dsrace]

Once you hit boost,it won't matter much.

i have wondered that too but if air acts like a fluid wouldn't we still want to funnel it equally or as equal as possible? or once pressurized each will take what they want/can allow?

[dsrace]

i've had a lot of time to think about this lol  and the adapter scotts friend made for those builds that is on dougs rail are really nice space savers but an inch or so above the lower intake ports so that is why i think they are directing flow unequally coming off the butterfly plate.

[fabr]

I'm thinking that without a flow bench and knowledge of how to use one to it's fullest it is just a guess what you are doing. There is a lot more to it than just flow numbers. Not trying to be a smart ass or one of those know it all moofers but a person might as well try to copy whoever is the smart guy of the week that you respect their work  or spend a LOT of time at the bench after spending a lot of time boning up on all the shit you can find .  I was very lucky early on ,was invited to Superflows once a year gathering of about 20 of the most respected names in the high performance world. About a hundred of us know nothings  had the opportunity to pick the brains of them for 3 days/nights. I learned more in those 3 days than the previous 2-300 hours at the bench. I guarantee you ,those guys were the gurus of gurus. The bottom line though is that theory still has to be developed at the bench and proven on the dyno.

[dsrace]

it absolutely does and i wish i had the resources and equipment to do just that.... but like you said right now it's theory's and trial and error. just looking for input good or bad cause you never know when it sparks a thought and when i'm over thinking it and need pointed in another direction. not trying to re invent the wheel either just looking to obtain a goal. those three days are an opportunity i wish i could have! especially with guru's that were well acquainted with this engine.  i also understand it's not all about tip cfm flow and that is what i'm trying to learn. i know it takes many hours to begin to learn and i lack the equipment to do all of it but principals help.

[fabr]

The only thing that really matters when working with a casting is the first inch below the valve and matching the intake ports to the manifold. Almost nothing you do deep in the port itself will improve flow more than a percent or 2 and that is only at higher rpm's.  Opening up a port will usually just kill flow velocity at lower rpm's. For the purpose of a turbo head,you need to concentrate on anything that enhances lower rpm flow off boost. That is the first inch below the valve.  Concentrating on just that will yield ,by far,the biggest performance increases.

[fabr]

Want to further cloud the subject? Ever hear of swirl and tumble?

[Punkur67]

The only thing that really matters when working with a casting is the first inch below the valve and matching the intake ports to the manifold. Almost nothing you do deep in the port itself will improve flow more than a percent or 2 and that is only at higher rpm's.  Opening up a port will usually just kill flow velocity at lower rpm's. For the purpose of a turbo head,you need to concentrate on anything that enhances lower rpm flow off boost. That is the first inch below the valve.  Concentrating on just that will yield ,by far,the biggest performance increases.

The local guy that did the porting on my heads for my Fairlane said he preferred to keep the ports smaller to increase velocity rather than making them as big as possible.

[dsrace]

The only thing that really matters when working with a casting is the first inch below the valve and matching the intake ports to the manifold. Almost nothing you do deep in the port itself will improve flow more than a percent or 2 and that is only at higher rpm's.  Opening up a port will usually just kill flow velocity at lower rpm's. For the purpose of a turbo head,you need to concentrate on anything that enhances lower rpm flow off boost. That is the first inch below the valve.  Concentrating on just that will yield ,by far,the biggest performance increases.

NOW YOU TELL ME after all those hours grinding on that head!!!!  now see this is the best info to know!

[dsrace]

Want to further cloud the subject? Ever hear of swirl and tumble?

please explain

[fabr]

The local guy that did the porting on my heads for my Fairlane said he preferred to keep the ports smaller to increase velocity rather than making them as big as possible.

Smart man.

[fabr]

NOW YOU TELL ME after all those hours grinding on that head!!!!  now see this is the best info to know!

You never asked.

[Yummi]

Quote from: Punkur67 on Yesterday at 06:41:18 AM

    The local guy that did the porting on my heads for my Fairlane said he preferred to keep the ports smaller to increase velocity rather than making them as big as possible.

DS Race,

and i wasn't trying to make the ports bigger just smooth all the sharp leadges in them and there were a lot of those! i wish i could get a clear pic of the stock ports it would amaze everyone it looks like a set of steps in there litterally.


Back to swirly things.