what exactly are boyeson ports? is wormholes the same thing? those blasterfreak look like they go to the transfer ports and not the upper cylinder like scots do.
Thanks to ken
- Thread starter scotj77
- Start date
Anyone correct me if I'm wrong here but here's my understanding of the problem.
As the piston slides over the intake windows it partially blocks the windows. The air coming in through the intake is moving at a high velocity and doesn't want to stop. When the piston blocks the windows the air charge wants somewhere to go. Because those ports are always open to a volume (the tranfers) the incoming air charge, with sufficient speed, can shoot down there to fill the crankcase a little more. When the incoming intake charge doesn't have to start and stop again to keep flowing in through the reeds it means that the charge comes in faster than without the ports.
As the piston slides over the intake windows it partially blocks the windows. The air coming in through the intake is moving at a high velocity and doesn't want to stop. When the piston blocks the windows the air charge wants somewhere to go. Because those ports are always open to a volume (the tranfers) the incoming air charge, with sufficient speed, can shoot down there to fill the crankcase a little more. When the incoming intake charge doesn't have to start and stop again to keep flowing in through the reeds it means that the charge comes in faster than without the ports.
that sounds exactly right. so the ones that scot made essentially do the same thing but they are on the upper part of the cylinder and not into the transfers. im guessing someone has tried this before and it didnt work out well but.... havent herd of anyone else trying it. maybe even try both and see what it does?? i wish i had a spare stock cylinder to try this on...
those do go into the transfer ports surfrjag. and sicivicdude that is exaclty what i was thinkin when i drilled them. I pmed the guy that posted me sayin i messed up my port timing bc i though he might know somethin i didn't. he didn't respond..... I guess i could bore it and just use my spacer plate and run it on my stroker. just keep it as a spare.
The area he drilled those ports into is the very top corner of the secondary transfer. It's right at the corner where the transfer port turns into the cylinder itself. Maybe those two holes do nothing, maybe they are one more way to shove air and fuel into the cylinder for just a split second more.
I really looked hard at those corners to see about putting two more boost ports into the cylinder for BDC. I was only worried about rings catching but without changing the transfer port itself (only cutting the hole into the transfer tunnel) there's no extra risk of catching a ring.
I really looked hard at those corners to see about putting two more boost ports into the cylinder for BDC. I was only worried about rings catching but without changing the transfer port itself (only cutting the hole into the transfer tunnel) there's no extra risk of catching a ring.
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