Gordy
Well-Known Member
Have you tried a dual pull brake lever?
Piston port avengers and phantoms
- Thread starter Mike Cyanide
- Start date
One thing that an Avenger should never be without...lol...lol.
An auto self-destruct device...lol...OH, thats right, the Avenger IS an auto self-destruct device...lol...lol.
If you see that it says "Made In Israel" anywhere on it, get away from it as fast as you can, 'it blows up and goes BOOM'...lol...lol.
Picture courtesy of IDF, air and ground attack that started early Sunday evening, their time, across the Lebanese border in pursuit of what is left of Hezbolah...It is interesting that the Lebanese Military backed up 3 miles allowing Israel to do this.
You only need brakes when you can actually start something and get it rolling on a consistent basis...lol...lol.
Words good I do.
Pop up pistons are usually meant to provide another half a point of compression to the engines they are designed for, maybe a whole point even depending on the particular engine. As for the Avenger, you would need to do the math depending on the piston used and subtract the dome volume from the compressed volume. The bigger concern would be the width and shape of the compression band around the perimeter of the chamber and how it matches up with the piston. Wrong size and shape may cause problems.
I am not sure if removing the reed would benefit the Avenger, unless that was not your intent. I only know how it works with the Phantom. The Avenger has very different port layout and timing and has a greater affinity for high RPM, mostly due to the transfers. I also suspect it has a bit more blowdown than the Phantom. People like to trash talk the port configuration of the M460/Phantom, but there was a method to the madness, and the port design and timing figures were made that way for a reason.
Boost ports are great, when they aren't trenched into the cylinder. If you don't care about longevity, then it works, but proper boost ports get fed from the intake port and are machined or cast into the cylinder so they don't interrupt the cylinder wall.
The Avenger sounds like a saw, because it's a saw. I never put much thought into how my engines sound. To me it's just how they sound. You could likely change the tone a bit with some carefully considered port work, either on the upper transfers or exhaust port roof timing and shape.
Basically, I can't really suggest anything without having a full port map for the Avenger. Nobody has posted on yet, so this is all just generic suggestions.
As for intake port roughness, I never go beyond 80 grit, and usually I leave the surface roughed with a double cut burr.
Mike Cyanide
Well-Known Member
Dude you never disappoint! I thought the same about pop up and you talked me out of it for sure by confirming suspicions. No way I mess with a squish band st my skill level.Words good I do.
Pop up pistons are usually meant to provide another half a point of compression to the engines they are designed for, maybe a whole point even depending on the particular engine. As for the Avenger, you would need to do the math depending on the piston used and subtract the dome volume from the compressed volume. The bigger concern would be the width and shape of the compression band around the perimeter of the chamber and how it matches up with the piston. Wrong size and shape may cause problems.
I am not sure if removing the reed would benefit the Avenger, unless that was not your intent. I only know how it works with the Phantom. The Avenger has very different port layout and timing and has a greater affinity for high RPM, mostly due to the transfers. I also suspect it has a bit more blowdown than the Phantom. People like to trash talk the port configuration of the M460/Phantom, but there was a method to the madness, and the port design and timing figures were made that way for a reason.
Boost ports are great, when they aren't trenched into the cylinder. If you don't care about longevity, then it works, but proper boost ports get fed from the intake port and are machined or cast into the cylinder so they don't interrupt the cylinder wall.
The Avenger sounds like a saw, because it's a saw. I never put much thought into how my engines sound. To me it's just how they sound. You could likely change the tone a bit with some carefully considered port work, either on the upper transfers or exhaust port roof timing and shape.
Basically, I can't really suggest anything without having a full port map for the Avenger. Nobody has posted on yet, so this is all just generic suggestions.
As for intake port roughness, I never go beyond 80 grit, and usually I leave the surface roughed with a double cut burr.
Boost ports a big possibility bcuz I have multiple top ends to each engine. I like power but I'm realistic about the candle that burns brightest lol
The sound of my ld100 is my fav but after your explanation I can see the reason chasing it is stupid and after trying the same pipe on many engines. While pairing almost every combo there is for these to completely different exhaust notes. I'll enjoy for what she is!
Porting... I knew that answer but always dig for something I may have missed. Lol
Thanks again for the reply man. I always get what I'm lookin for.
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