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my bike
by: pistonguy - Jan 5, 2017 21:19:04 GMT -5
Post by pistonguy on Jan 5, 2017 21:19:04 GMT -5
 Well. This is my moped then. Custom made and assembled from the frame up by me.... ive had it for years and always just called it and my scooters my "bikes" Dude that Scoot is truly Awesome. I'm in love with the simplicity A Flying Machine Factory pipe and all I need to digitize may Dads 1949 Whizzer |
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Post by pistonguy on Dec 19, 2016 21:33:17 GMT -5
Bottom line
the Pipe Godz at Pro Circuit Mr Payton, FMF Donny Emler and Bill at Bills pipes have spent a lifetime on Pipe technology and None are Racing in any market place with a Two Stroke Chamber, they have a Lifetime in the Dyno room.
No market place is using Two Stroke Chambers on Four Strokes other that note Gullible Scooter scene, jus utter Bunk
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Post by pistonguy on Dec 16, 2016 14:48:47 GMT -5
Im a 1987 C-Mod Kart champ. KT 100's on Methanol/ Nitro
1989 Kingdom of Outlaws Kart Champ
Drove for one Zoomie and Haddock, Haddock and Zoomie took one Lake Speed to a World tilte beating Ayrton Senna.
Zoom is a McCulloch master, still has a tone of motors that should be in the museum.
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Post by pistonguy on Dec 16, 2016 12:41:32 GMT -5
The Stinger on the end is to build back pressure, the purpose for the back pressure is to build a certain amount of Heat, the purpose of the Heat is That the Sound Waves work much better in a Higher Heat Medium, this not only helps Pull out the Exhaust there is a fair amount of crankshaft rotation or Duration that Both the Exhaust Port and Transfer Ports are Open, The Sound Waves also Pull in more Intake Charge. The GY-6 is Most happy with as little back pressure as possible. so Im still calling bunk to a Two Stroke Expansion Chamber on a Four Stroke GY-6. it will run but not as good with a pure free flow setup. Here are a couple images of the Latest in Four Stroke Pipe Technology from the Pipe Gods   |
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Post by pistonguy on Dec 14, 2016 14:45:45 GMT -5
I've seen guys/gals running 2t exhausts on 4t engines,on a few forums over the years,,, Oh I've seen it. I even see some of theses systems Falsely marketed as Four Stroke Exhaust. If one understands how each systems works its silly to put a Expansion Chamber Two Stroke exhaust on one. We would see the Pipe Gods at Pro-Circuit and FMF doing so if it was worth a snit. |
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Post by pistonguy on Dec 14, 2016 6:55:14 GMT -5
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Post by pistonguy on Dec 13, 2016 21:32:45 GMT -5
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Post by pistonguy on Dec 13, 2016 21:21:05 GMT -5
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Post by pistonguy on Dec 13, 2016 21:18:55 GMT -5
K there Chopper dude. this is your former neighbor from keller. I'm sure I've seen you at Willhoits or Johnny Esparzas place. I know you have some smarts but what in the heck are some of you doing with a Two Stroke exhaust system on a Four Stroke? The Cone's are of different Angles and Lengths, along with the Mid section For Scavenging, Different angle cones and lengths are to make power either Down Low or Top End along with the Stinger on the end were the Silencer is attached. The back pressure is also to build a certain amount of heat mediums and and working sound waves. I just don't get it  |
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Post by pistonguy on Dec 6, 2016 20:54:46 GMT -5
KTM all from the Mind of one John Penton.
Actually did some Sand castings for him way back in the day
an amazing man to talk to. I could listen to him tell his tail forever.
Great read is the John Penton story told by Lyle Lovett.
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Post by pistonguy on Nov 28, 2016 21:03:34 GMT -5
Would like to see some more pictures of the Piston and cylinder head. From what I see after 1,200 miles is not excessive, The plug looks like your running rich to me, the Fire Ring is Black. And why do you have the Head off at this time anyhow? I don't have the head off. I used a borescope to go through the spark plug hole to capture that image. So this is normal level of carbon build up for the piston? I can't get a shot of the cylinder head without taking it apart. My borescope doesn't have mirrors for me to angle the lens. ahh ok I get it At that milage an having annualized several thousand piston failures I don't see what you have going as a issue. its not broke so don't fix it. From the Fire ring on the Plug looks like you maybe a little fat on the jetting , but that may also be the fuel and Oil you are using. I run Non Ethanol  octane and Royal Purple Synthetic an she runs extremely clean. |
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Post by pistonguy on Nov 27, 2016 13:01:39 GMT -5
Would like to see some more pictures of the Piston and cylinder head.
From what I see after 1,200 miles is not excessive,
The plug looks like your running rich to me, the Fire Ring is Black.
And why do you have the Head off at this time anyhow?
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Post by pistonguy on Nov 25, 2016 18:44:58 GMT -5
The only time I have had a Piston click the head was in a 1428 Farmall with a 426ci diesel that spun a bearing.
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Post by pistonguy on Nov 25, 2016 18:43:41 GMT -5
My nephew's Icebear suddenly stopped working last week. It made a bad noise from the crankcase, and would only start with lots of throttle and would not keep running. I tore the top end down first, no issue with the head, jug, or piston, so I had to split the case. As soon as I it apart, I grabbed some oil from the inside on my fingers, and it was silver. I cleaned out at least a 1/4 teaspoon of very fine metal. Pulled the crankshaft, and the outer bearings were fine, though one did have a slight bit of drag. Grabbed the con-rod and found at least 1/8" play up and down. No damage to the rest of the internal parts of the engine, no wear or scrapes of any type. Looks like the con-rod bearing failed, so I'll be heading to Scrappy's tomorrow for a new crankshaft. This Icebear has a 47mm BBK, which is generally not a big enough upgrade to cause crankshaft failure. My nephew does ride 2-up alot, giving friends rides everywhere, so it could have been stress, but I'm leaning towards a manufacturing flaw that finally failed after a year. For those curious, it's ok to have a tiny bit of play side to side on the connecting rod, but up and down play is very bad. It can cause the piston to hit the head, and will make it appear as if you've lost compression, since the chamber area is larger with the con-rod able to move further back. Over time, it can shatter the skirt, or end up with catastrophic crankshaft failure, worst case blowing the engine. Ok other than Debri, Pistonguy is still trying to figure out how you bust the Skirt of a Piston with the above mentioned. |
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Post by pistonguy on Nov 14, 2016 21:59:00 GMT -5
Owwie for sure
There is a Side Clearance Spec, The Spec for up and Down Is Zero nada nothing
I would love to see some Pics?? please
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octane and Royal Purple Synthetic an she runs extremely clean. 