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Post by dirtrider1219 on Nov 11, 2015 13:52:00 GMT -6
Update: PROBLEM SOLVED!  Wanna guess what it was? The "water guard" that was on the mad dog(ruckus clone) intake was wayy TOO RESTRICTIVE, so it would run super rich when trying to suck in too much air. Took the can off and just have the filter open now and it runs great with a 125, might still be a bit on the lean side so I gonna try a 130. Come on guys, that should have been an easy one  |
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Post by dirtrider1219 on Nov 10, 2015 19:36:13 GMT -6
Yes I ported the hell out of it to try to match the big port head. i didn't wanna go too much though and break through the metal layer on the inside...maybe I did and it's sucking in air through a hairline crack?
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Post by dirtrider1219 on Nov 10, 2015 14:40:33 GMT -6
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Post by dirtrider1219 on Nov 8, 2015 20:36:38 GMT -6
Just to be clear, the engine was built by this person in NC. I bought the engine from Walt since he wasn't using it. Walt had used the guy for years so I would assume he knows what he's doing.
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Post by dirtrider1219 on Nov 8, 2015 20:32:40 GMT -6
Alleyoop I'm not sure. Walt said it was an expert builder from North Carolina if I remember correctly. He's the one who also confirmed the kits will work on P engines.
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Post by dirtrider1219 on Nov 8, 2015 10:41:30 GMT -6
I've also blocked off the auto choke with the gasket method I saw in the library. Also Alley isn't the fuel ratio mixture screw just for idle/low speed, but it still has some small effect throughout the range?
It has always run good idling and part throttle no matter what jet size.
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Post by dirtrider1219 on Nov 8, 2015 10:29:00 GMT -6
I think it's 24mm, it's a new carb I got from Walt just for this engine. It was supposed to be a replacement 150 carb. Stock size pilot jet, don't know the size. What I don't get is why would it run at all, and pretty good at that, with a 115 in there? That has to be wayyy to lean for this engine, but it seems to like it. If I try to give it more fuel it cuts at 1/2 throttle and up depending on the jet. With a #130 it ran like crap and would barely get above 15mph.
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Post by dirtrider1219 on Nov 7, 2015 7:25:16 GMT -6
Lol I know Diver the stock exhaust is holding me back! Good thing an aftermarket one is showing up Tuesday I also forgot to mention I have a big port head with stock size stainless valves and an A12 cam. Also the stock size carb is new. All I've done is played with the main jet size. |
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Post by dirtrider1219 on Nov 6, 2015 20:04:02 GMT -6
Update: I ended up buying a 63mm, +6mm stroker from Walt at Unique Scooter Parts. i'm loving it so far but I can't get the damn thing tuned  -63mm -6mm stroker -big port head, stock size stainless valves -A12 cam -new stock carb -stock exhaust -aftermarket ruckus clone intake My #125 intitial jet size seemed a little too lean since it would cut at anything past say 3/4 throttle, and the plug seemed to back it up. Lean. So i went to bigger jets, and the problem got worse! So I went down to a #115, and it ran almost perfect but the plug shows very lean. Went to a 120 and it has some cut, but the plug still shows ashy white on the electrode and the porcelain is bright white as well. A 115 jet is surely too small for this engine no? One thing I notice is when I first ran it with the 125 jet, the valve cover got blistering hot. After that, I changed the oil, made the homemade air scoop mod, and put in the 115 jet. EVEN THOUGH IT'S MUCH LEANER IT RUNS MUCH COOLER. The engine was and still is breaking in since that 125 jet was the very first time the engine was ran. Or could the air scoop really work that well? |
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Post by dirtrider1219 on Oct 28, 2015 7:59:13 GMT -6
hey tvnacman if you wanna send those cdi's my way I wouldn't resist  I don't care about the timing I just always keep spare cdi's cause they fail so often  |
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Post by dirtrider1219 on Oct 25, 2015 21:09:54 GMT -6
I will certainly check them out diver thanks. I think I'm going to pull the trigger on that kit in the original post tomorrow  Any more advice or warnings from anyone before I do so my motor doesn't go boom  |
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Post by dirtrider1219 on Oct 25, 2015 19:36:27 GMT -6
Thanks diver. I'm leaning toward the original stroker kit because I love displacement I was thinking about ceramic coating the piston as well. Never tried it but have heard good things about it and should help reduce friction from the aggressive rod angle. I will probably start a new build thread and I can also document any differences between the p engines and non p engines. You mean a Ceramic Thermal Barrier Applied to the Dome correct? Yep, and possibly the skirts? |
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Post by dirtrider1219 on Oct 25, 2015 19:35:04 GMT -6
Check this out. http 200cc pre-built ://www.scrappydogscooters.com/125_150cc_Performance.html Scroll down to the bottom. I just sent a few questions asking about it. Only issue is it's a short case. Would be fun to play around with neutral though  |
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Post by dirtrider1219 on Oct 25, 2015 18:01:12 GMT -6
Any information you're willing to give Diver, I'm all ears. If you want to post it here or i can PM you, totally up to you. To everyone in this thread  |
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Post by dirtrider1219 on Oct 25, 2015 17:58:30 GMT -6
Thanks diver. I'm leaning toward the original stroker kit because I love displacement I was thinking about ceramic coating the piston as well. Never tried it but have heard good things about it and should help reduce friction from the aggressive rod angle. I will probably start a new build thread and I can also document any differences between the p engines and non p engines. |
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Wanna guess what it was?
I don't care about the timing I just always keep spare cdi's cause they fail so often 
Any more advice or warnings from anyone before I do so my motor doesn't go boom 
