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Post by jerryscript on Jan 14, 2015 17:45:28 GMT -6
New forum member here. I've been riding scooters for a couple of years now, and two wheels for most of my life. I wrench on my rides, and was a mechanic years ago in the Army. Thanks to forums like these, I've become pretty comfy with gy6 engines and their quirks, and I would like to say upfront thanks to everyone for posting so many details, pics, and videos that have helped tremendously! I'll try to help out in return, passing the knowledge on. I recently purchased a 2014 Znen SSR Pacifica 150cc with 16" wheels. I bought it online from Power Ride Outlet, my first online purchase of a scooter, and it arrived in 10 days (ordered Dec 29th, arrived Jan 9th, holidays added 4 days to time). I have video of the delivery and pics of the unboxing if anyone is interested. Got lucky there was no damage during shipping, and after a pretty thorough PDI, she started up no problem. Loving the 16" wheels, feels and handles more like a motorcycle, not as nimble as my 10" wheeled 50cc, but much smoother. and I'm not afraid to ride over a manhole cover anymore!  And here's the family's scooter brigade, Rocketa 50cc, Razor Electric, Znen SSR 150cc, Znen 50cc, Goped original model.  |
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Post by Bashan on Jan 14, 2015 18:46:36 GMT -6
Yes we'd love to see the video and the uncrating. The more the merrier. Nice stable you have got going. I have a 16" bike too, I do like the stability at speed but at very low speeds it gets a little quirky. Znens are a great build, I had one and it was finished nicely and never gave me any trouble. Welcome to the forum and let me know if you need anything. Rich
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Post by jerryscript on Jan 14, 2015 19:03:56 GMT -6
Here's a quick video of the delivery itself so you can see why you need to be sure you have lift-gate service included in your purchase: As you can see, no damage to the box. Interesting thing, the box has no bottom! Here are photos of the stages of unboxing, which goes as follows: 1- Remove outer plastic wrap 2- Remove box 3- Remove accessory items (trunk, mirrors, windshield, battery - note: start charging battery right away) 4- Remove interior plastic wrap 5- Remove top bolts from metal frame - note: pieces only bolted to top and bottom must be supported to prevent falling 6- Remove any connecting straps or brackets from top of frame to handle bars or trunk rack 7- Remove all vertical metal frame pieces - note: be careful, don't let them scratch your new ride! 8- Remove any lower straps or brackets connecting scooter to lower frame or pallet 9- Remove bike from lower frame/pallet - note : get help, don't take chances on removing it and dropping it! 10 - Clean up packaging and begin PDI Open top - left side view  Open top - front view  Open top - right side view  Box removed - left side view  Box removed - front view  Box removed - right side view  Box removed -rear view  Plastics removed -left side view  Plastics removed -front view  Plastics removed -right side view  Plastics removed -rear view  Frame removed -left side view  Frame removed -right side view  Front-Right view  Front-Left View Put the kids away! Scooter porn time!   |
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Post by jerryscript on Jan 14, 2015 19:07:57 GMT -6
Yes we'd love to see the video and the uncrating. The more the merrier. Nice stable you have got going. I have a 16" bike too, I do like the stability at speed but at very low speeds it gets a little quirky. Znens are a great build, I had one and it was finished nicely and never gave me any trouble. Welcome to the forum and let me know if you need anything. Rich Thanks! Do you have the BN157QMJ -3 as well? I'm trying to keep track of those I meet with this particular engine, since it has it's own quirks. Luckily I live near Scrappy Dog Scooter's, and they carry most of the unique parts for this engine. I've also found a source for 20x15 sliders which I'll be trying very soon, gotta find my scale and weigh the stock ones so I have a base reference to work from. |
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Post by Bashan on Jan 14, 2015 21:33:50 GMT -6
Great stuff, thanks for posting! No, my 16" bikes are a Citycom 300i and a Pegasus 150 and it's engine stamp looks like this:
But I think the 16" wheels have a particular feel among scooters. Your engine, as I'm sure you're aware as you seem to be well versed, is sometimes called the B GY6. Some of the parts are interchangeable but many are not. We've had a few folks on the forum frustrated about finding parts but since the B's are still coming out maybe there's more parts available. My CF Moto will probably get harder to get parts for but the SYM will be around for a long, long time.
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Post by dmartin95 on Jan 14, 2015 22:30:53 GMT -6
Your engine, as I'm sure you're aware as you seem to be well versed, is sometimes called the B GY6. Some of the parts are interchangeable but many are not.
I don't know if this was started from the information on scrappydogs, or where it actually came from.... But I would like to clear this whole "B-case" thing up... It should even be pinned somewhere... Yes, his particular engine is one type of b-case, but a "b-case" also comes in short/long case as well. Jerry's case is what's called an extra-long case. It has a taller head (73mm), longer chain, different lobe cam and the case itself is longer (to accommodate 16" wheel) ... Most standard 157QMJ parts are not interchangeable. But, what defines a "b" case motor boils down to one thing. Are the studs spaced at 57 or 54mm apart. BOTTOM LINE right there... If it's an "a-case" studs are 54mm apart If it's an "b-case" studs are 57mm apart When I first started learning about these motors, I was inquiring for info on these boards....I have a ZNEN built motor (BN157QMJ) and was told I had a b-case motor based upon my engine stamp... Well, I'm glad I looked into it further because It's not a B-case. It's a standard 157QMJ built by ZNEN, hence the BN. |
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Post by dmartin95 on Jan 14, 2015 22:31:59 GMT -6
Hey Jerry, that scooter is really sharp! |
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Post by cyborg on Jan 14, 2015 22:52:26 GMT -6
Yes I agree,, it's a very nice bike,,super sharp,,, and welcome to the forum
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Post by Guitarman on Jan 15, 2015 1:25:59 GMT -6
Welcome to the Hospital.
LOVE those big wheels.
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Post by tvnacman on Jan 15, 2015 4:50:58 GMT -6
Jerry can it core an apple ?  John |
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Post by jerryscript on Jan 15, 2015 17:25:22 GMT -6
Great stuff, thanks for posting! No, my 16" bikes are a Citycom 300i and a Pegasus 150 and it's engine stamp looks like this:
But I think the 16" wheels have a particular feel among scooters. Your engine, as I'm sure you're aware as you seem to be well versed, is sometimes called the B GY6. Some of the parts are interchangeable but many are not. We've had a few folks on the forum frustrated about finding parts but since the B's are still coming out maybe there's more parts available. My CF Moto will probably get harder to get parts for but the SYM will be around for a long, long time. Thanks for the info about the Sym engine. Curious, does it use the same variator as mine? I've only found the stock variator carried by a couple of online vendors, no performance one. I have found 20x15 sliders, so I'll be getting some of those soon. I don't usually mess with the clutch much, haven't had this one one steep hills so don't know if there's a need. Will have to get a new carb, pulled mine today, pulled the plug on the a/f at it is non-slotted, so no adjustment. The needle is inside a collar that prevents all but the smallest of spacers, so I may as well just replace it with an easier to modify carb. |
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Post by jerryscript on Jan 15, 2015 17:29:15 GMT -6
Your engine, as I'm sure you're aware as you seem to be well versed, is sometimes called the B GY6. Some of the parts are interchangeable but many are not.
I don't know if this was started from the information on scrappydogs, or where it actually came from.... But I would like to clear this whole "B-case" thing up... It should even be pinned somewhere... Yes, his particular engine is one type of b-case, but a "b-case" also comes in short/long case as well. Jerry's case is what's called an extra-long case. It has a taller head (73mm), longer chain, different lobe cam and the case itself is longer (to accommodate 16" wheel) ... Most standard 157QMJ parts are not interchangeable. But, what defines a "b" case motor boils down to one thing. Are the studs spaced at 57 or 54mm apart. BOTTOM LINE right there... If it's an "a-case" studs are 54mm apart If it's an "b-case" studs are 57mm apart When I first started learning about these motors, I was inquiring for info on these boards....I have a ZNEN built motor (BN157QMJ) and was told I had a b-case motor based upon my engine stamp... Well, I'm glad I looked into it further because It's not a B-case. It's a standard 157QMJ built by ZNEN, hence the BN. I feel like an idiot for not measuring the stud spacing when I did the PDI. Unfortunately, there are 5 body panels to remove in order to get to the valve cover, and you have to remove the seat from the bucket due to two forward screws that are virtually unreachable, so the whole thing is a PITA compared to my 50cc (bucket and one panel). Next time I have the valve cover off I'll be sure to measure and let you know what it is on the BN157QMJ-3. I'm hoping it's 54 so I can use the bolt on NCY 61mm BBK in the future, anything less doesn't seem worthwhile, and I don't think I want to bore the case. |
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Post by jerryscript on Jan 15, 2015 17:36:18 GMT -6
Yes I agree,, it's a very nice bike,,super sharp,,, and welcome to the forum Thanks! Welcome to the Hospital. LOVE those big wheels. Feels right with those 16"ers! Jerry can it core an apple ? John Not yet, but I may upgrade it to make me an expresso!  |
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Post by dmartin95 on Jan 15, 2015 17:55:05 GMT -6
I feel like an idiot for not measuring the stud spacing when I did the PDI. Unfortunately, there are 5 body panels to remove in order to get to the valve cover, and you have to remove the seat from the bucket due to two forward screws that are virtually unreachable, so the whole thing is a PITA compared to my 50cc (bucket and one panel). Next time I have the valve cover off I'll be sure to measure and let you know what it is on the BN157QMJ-3. I'm hoping it's 54 so I can use the bolt on NCY 61mm BBK in the future, anything less doesn't seem worthwhile, and I don't think I want to bore the case. The 57mm b-case is a way better motor. There's way more meat to the engine.... Without having to remove the valve cover, I'm almost 100% positive you have a b-case motor because of the -3 at the end of your motor. It's exclusive to ZNEN. The -3 means it's the third edition 157QMJ, and that would be called the "extra long" case motor. You have short, long and extra long case GY-6's.. I'm pretty sure the extra long case motors are exclusively 57mm engines (even though short and long can vary 54/57mm). |
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Post by tvnacman on Jan 15, 2015 18:08:31 GMT -6
Jerry do you have an oil drain plug on the cvt side on the bottom ?
John
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