Home porting

[Drk_rider]

Well decided to give it a shot and dive into the devilish world of porting.
I do not think it turned out to bad although I could have spent a few more min getting it all evened out. But it is all smooth as glass.

People with more knowledge please feel free to throw out some pointers.

One question I have is how do you know what to do for a drag port or for a trail/dune port. This just was pretty much a clean up job. but I went a little more cleaning on some parts.

The dark spots in some of the pics is left over cutting fluid.

 

[Drk_rider]

I also did the transfer ports just forgot pics.

 

[Awk08]

not bad for a first try, did you follow any specs or just wing it ???

 

[Drk_rider]

No I watched your vids a couple times. I do not know where to get any specs.

Shoud I have taken the hump in the exhaust port out?

 

[Awk08]

No I watched your vids a couple times. I do not know where to get any specs.

Shoud I have taken the hump in the exhaust port out?

i don't have any vids, you must mean oconnorracing's vids,
nor have i ever tried this, i let ken do it for me

 

[Drk_rider]

lol my bad thought u guys were one in the same. gawd do I feel embarrased.
But yes I did mean Ken O'conner vids.

 

['00 WO-YA!]

i don't have any vids, you must mean oconnorracing's vids,
nor have i ever tried this, i let ken do it for me

I admire your self control, the thought of what I might be able to accomplish & how close it might feel by the ass dyno to what Ken does would just kill me! And you even have the perfect blueprint to look at.

 

[Blaner]

doesnt look bad, although the intake bridge is a little thin for my liking.

 

[slickerthanyou]

Doesn't look too bad, My port jobs from Ken still have the Hump in the exhaust! I'm thinking it needs to be there but don't hold me to that! My hand is no where steady enough to even think of trying!

 

[Drk_rider]

Well one things for sure. You both are real fast at trashing some one eles's thread. Thanks allot. I just wanted some good feedback. But now I dont think anyone will want to read thru all your trash to see if any real information is in there.

I think you two should just touch tips and get it over with.

 

[toytech]

Well decided to give it a shot and dive into the devilish world of porting.
I do not think it turned out to bad although I could have spent a few more min getting it all evened out. But it is all smooth as glass.

People with more knowledge please feel free to throw out some pointers.

One question I have is how do you know what to do for a drag port or for a trail/dune port. This just was pretty much a clean up job. but I went a little more cleaning on some parts.

The dark spots in some of the pics is left over cutting fluid.

looks good! I put the tripple ports in my exhaust, let us know how it runs when you get it done

 

[xKroniK13x]

This builder bashing won't be tolerated. Fanboys will be fanboys, the ultimate decision is up to the owner. Stop trashing threads over this, it's getting ridiculous.

To the OP, sorry to see this thread take a beating like that. I deleted all the posts for you so you can hopefully have a successful thread.

For a first go at it, that porting looks good! Good job man! Looking forward to seeing more work.

 

[Drk_rider]

ty Kronick.

Well i will have a hard time deciding how well the porting works.
Ill be putting it on my new lil 3 mill. Getting all sorts of goodies. fmf P&S, V force reeds, and now a port job. I haven't even ridden it yet. All I have for comparison is an unported blaster with a stock pipe.

 

[Drk_rider]

Toytech how did you do the triple port in yours?
Do you have a walkthrough?

 

[Blaner]

thanks Kronix. good to see. Something else you could add which I always run with are auxillary boost ports in the intake.

 

[Blaaster]

Well decided to give it a shot and dive into the devilish world of porting.
I do not think it turned out to bad although I could have spent a few more min getting it all evened out. But it is all smooth as glass.

A champion effort for a first time porting.

The smooth as glass finish is great for the exhaust, and thats how it should be.

The intake however, should not be so smooth because, the fuel will tend to bead on the shiny surface which affects atomisation.

Take a look at rain on a freshly polished car bonnet, this is a similar seniaro to fuel on a highly polished intake surface.

The surface should be dulled, so perfect atomisation of the fuel can be maintained.

 

[Blaner]

A champion effort for a first time porting.

The smooth as glass finish is great for the exhaust, and thats how it should be.

The intake however, should not be so smooth because, the fuel will tend to bead on the shiny surface which affects atomisation.

Take a look at rain on a freshly polished car bonnet, this is a similar seniaro to fuel on a highly polished intake surface.

The surface should be dulled, so perfect atomisation of the fuel can be maintained.

soemthing ive wondered before...does the theory of atomization in the intake as you have mentioned still hold if the air/fuel ends up below the piston in the crankcase?

 

[Blaaster]

I guess the fuel droplets are again going to get a pulverisation as they move through the crankcase and transfers, but not to the same extent that a carby will perform.

If good atomisation is not present when the charge is fired, the burn will be slower and poor.

I also fear that owing to larger droplets entering the crankase that oil will not come out of suspension so readily, which could starve components from lubrication.

 

[JonS]

am i wrong to assume that fuel atomization should only matter inside the combustion chamber? the atomization only helps to burn the fuel more efficiently and w/e gets below the piston is mostly lubrication.

 

[Blaaster]

am i wrong to assume that fuel atomization should only matter inside the combustion chamber? the atomization only helps to burn the fuel more efficiently and w/e gets below the piston is mostly lubrication.

True, but atomisation happens at carby level, it is very hard to atomise fuel droplets which cling to surfaces, as air again has to be mixed with them.

It can be done post carburation by vaporisation but the charge is now too deep into the process for this to be obtained.