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cus_deluxe

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Hard to tell from pic, are the roofs of the transfers flat or or are you trying to open part of the primary first, instead of all at once?
 

paragonbuilder

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Trying to guess exactly where the piston sits in the bore, it appear that both front and rears are purging on the exhaust side of the openings.
The extra long trail on the rears, makes it appear that they have more velocity, open first?
The bridge is very narrow, yet there is quite a large space in the wash pattern.
I’m pondering why this may be...
 

tree monkey

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Trying to guess exactly where the piston sits in the bore, it appear that both front and rears are purging on the exhaust side of the openings.
The extra long trail on the rears, makes it appear that they have more velocity, open first?
The bridge is very narrow, yet there is quite a large space in the wash pattern.
I’m pondering why this may be...

your starting to see what I see, yes why.
 

paragonbuilder

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your starting to see what I see, yes why.

Well first your previous post says the primaries open first, which means they should have the initial burst and thus more velocity..., so I’m wrong in that...

What I see is that possibly the mains need more taper toward the intake, they appear to be crashing into the wall and diverting more towards the center of the cylinder. Not really any room to bring them back though. Bridge is too narrow.
 

tree monkey

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That you'll be adding some JB weld to the outside corner of the upper primary's...?

I think so

Well first your previous post says the primaries open first, which means they should have the initial burst and thus more velocity..., so I’m wrong in that...

What I see is that possibly the mains need more taper toward the intake, they appear to be crashing into the wall and diverting more towards the center of the cylinder. Not really any room to bring them back though. Bridge is too narrow.

primary's and mains are the same thing, just a different term, port nearest the ex.
there's turbulence in the port causing the fresh charge to go straight out the ex port. epoxy in the right place might help.
also opening the secondary's sooner might help
 

paragonbuilder

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I think so



primary's and mains are the same thing, just a different term, port nearest the ex.
there's turbulence in the port causing the fresh charge to go straight out the ex port. epoxy in the right place might help.
also opening the secondary's sooner might help

I was wondering if epoxy would hold up in that environment? I suppose it constantly cooled by the fresh charge.
I also have some extreme heat jb here that is good for over 2000 degrees. I haven’t tried it yet though...


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wcorey

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I was wondering if epoxy would hold up in that environment? I suppose it constantly cooled by the fresh charge.

I actually was referring to building up the outside, so the corner of the tunnel can be broken through when redirecting the flow by grinding more angle to the front outside corner of the primary's.
 
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