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Thread: Looper exhaust porting
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02-26-2014, 06:05 PM #286Junior Member
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Hello Captain. It is interesting following you, i have a 225 looper and i like how you do with your engine.
Hvor i Sverige holder du til? I live close to the Swedish border.
Hilsen Ketil.
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02-27-2014, 12:07 AM #287
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03-03-2014, 09:37 AM #288
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03-30-2014, 12:52 AM #289
Honing finished, first a round with stones, finished with 320grit ballhone. Fingers coped fine...
Now I am a bit worried that my wrist pins became to small after cleaning, I can easily put them in by hand, and they can almost "fall out" if you turn the piston sideways. Meter shows 0,03mm play between piston boss and wristpin.
Do I need to change?
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03-30-2014, 03:28 AM #2905000 RPM
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That is .00112 In imperial if that helps anyone. .001 clearance would fall out easily.
Last edited by CNC_Guy; 03-30-2014 at 03:31 AM.
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03-30-2014, 03:46 AM #291
I know that They can't fall out due to the clips, it was just a way to describe the actual fit.
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03-30-2014, 04:17 AM #2925000 RPM
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I just translated the amount of clearance for the non-metric.
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03-30-2014, 08:47 AM #293
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03-30-2014, 10:25 AM #294
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03-30-2014, 10:27 AM #295
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03-30-2014, 01:28 PM #296
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03-30-2014, 03:37 PM #297Screaming And Flying!
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I think the pins are metric?
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03-30-2014, 11:19 PM #298
They are probably 24mm from factory, I altered the scale in order to hopefully recieve answers from the US guys...
My pins measure appx 23,98mm, which according to my digital caliper, is the same as 0,944"
My concern is weather to much play can make the wristpins destroy the piston bosses?(make the hole oval)I don't think spinning pins would destroy the bosses, its the rapid direction changes that worrie me...
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04-08-2014, 05:01 AM #299
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04-08-2014, 11:44 AM #300Scream And Fly VIP
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Get the pistons to weigh the same the rods also putting the heavy pistons with light rods is not nearly as good as weigh matched parts. You will need the exhaust holes for it to idle without loading up, also helps low end throttle responce. Personaly I would remove the lower part of the can.