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Peej update
by: JerryScript - Jun 21, 2016 1:07:22 GMT -5
via mobile
Post by JerryScript on Jun 21, 2016 1:07:22 GMT -5
Thanks everyone! rocky, I specifically asked about the coolant and brake fluid. Told they're fine. I think they changed out everything fluid last year. Which is what I would do if I were a mechanic and had a low-mileage 10yo bike brought in for the first time by a nonmechanic, 'cause no telling what has or has not been done. Sadly, now that I'm all set to drive, our temps are predicted to hit the high 90s all week. SIGH! It's a vast conspiracy to keep me from driving my scoot!  Wouldn't be so bad if the route wasn't all stop lights every couple blocks. SIGH!!!>'Kat I'm writing this at 11:00 pm, and it's still 100+ here in Vegas. Low temp last night was  , I had to throw another blanket on! The ride means constant breeze, so get on your peej and ride! |
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Post by JerryScript on Jun 20, 2016 20:24:04 GMT -5
What makes you think is rich? If it's the same carb and jets, it should be lean now.
If it gives you trouble, back off the throttle a bit. If it stumbles then recovers, is rich. If the engine speeds up (RPMs, not MPH) when you back off the throttle, it's lean.
If you need to adjust for issues at speed, try raising (to richen it up) or lowering (to lean in it) the needle. Moving the clip down or adding washers will make it richer, moving the clip up or removing washers will lean it out.
If you are adjusting for idle, you adjust the air/fuel mixture screw. It's on the lower left side of the carb, and may be covered by a brass cap. To remove the brass cap, you drill a tiny hole in it, then take a body panel screw, turn it into the hole till the brass cap pops out. Turn the A/F mixture screw clockwise to lean it out, counter clockwise to richer it up.
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Peej update
by: JerryScript - Jun 19, 2016 11:24:51 GMT -5
via mobile
Post by JerryScript on Jun 19, 2016 11:24:51 GMT -5
Glad to hear you are enjoying your sweet peej! The feeling of a good running two wheeler under you is something we all understand here, but find hard to explain to those who don't.
Ride safe, and enjoy, I know you always do!
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Post by JerryScript on Jun 18, 2016 14:16:49 GMT -5
The 100 BBK is actually 82cc. It should allow you to reach 45mph and the engine will be screaming at high rpm. Anything more and you would need to change the final drive gears.
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Post by JerryScript on Jun 16, 2016 22:39:12 GMT -5
Check your valve lash, they tighten up over time, and tight valves equals hard starting.
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Post by JerryScript on Jun 16, 2016 0:18:03 GMT -5
I know you saw this (b/c you wrote a response), but the second best thing I've ever done, scooter-wise, is put together a fuel-air mixture gauge. Without this you are literally just tuning with eyes closed. Even the best of ears makes this hard and inaccurate. If it were me .... with the top notch engine you now have .... I'd invest the $25, put together a gauge, and then tune accurately. Even if you then threw the contraption out it would be well worth it. Yours isn't any longer a lawnmower but a Caddy.
about 2/3 of the way down
ps: I've found I actually watch my gauge all the time, and find it very interesting to see what part of the RPM and torque range the engine runs lean or rich. It turns out to be a pretty complex issue.
Do you happen to know any car models that use that type sensor that you used? |
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Post by JerryScript on Jun 15, 2016 23:17:35 GMT -5
Thanks! I went way too rich! This model comes with a 32 pilot and a 100 main. After installing the BBK, there was a bit less throttle response at takeoff, and hesitation above 40mph. With the 115 main and a/f screw 2 3/4 turns out, I had better takeoff, but full throttle at any speed would bog, engine did not speed up when let off 1/4 turn. Next I put in the 38 pilot and left the 115 in, had to turn a/f screw all the way in for best rpm and throttle response. This combo resulted in bogging unless I was gentle on the throttle at any speed, and even then there was some hesitation. Went back and picked up a 105 and 108 main, and a 35 pilot. I put the 108 and 35 in, tuned best at 1 1/2 turns out, and she's roaring now. Can takeoff at light throttle or full throttle without hesitation, great response on up, and cruised on my test run at 50 up slight incline against gusting winds at half throttle, with instant response zooming up to 55 with another 1/4 turn, and back down with no bogging, hesitation, or backfire. Was dark by then, so still no highway run yet. Will take one tomorrow, still not pushing top speed, but should get a good feel for final adjustments to the carb with a bit of high speed wot. Really surprised by the small stock jets on this scooter! |
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Post by JerryScript on Jun 13, 2016 23:19:52 GMT -5
Love it when a plan comes together. Are you working with stock OE intake, snorkel air box? Stock setup for now. Intake manifold is the taller type, and the air cylinder is a beast for a scooter: www.thriftyscooters.com/images/Znen_150_18_AirFilter_Assembly.jpgI've only had to turn the air filter once. So long as it lets her breath, I would like to stick with it, even though I often fantasize about replacing it with a uni and rebuilding my seat bucket to get more storage. |
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Post by JerryScript on Jun 13, 2016 19:41:11 GMT -5
I just got back from Scrappy's, picked up a few jets. I could feel the need for more fuel once I got above 45mph. I picked up a 38 pilot jet, and 115 & 125 main jets.
The ride to Scrappy's and back is a good break in run. High traffic, so speeds are up and down, 55mph was fastest I took her, other than hesitating when cruising above 40 mph due to being thirsty, she had no issues at all. Can't wait to jet her up and twist that grip!
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Post by JerryScript on Jun 13, 2016 17:04:47 GMT -5
Installed the BBK this morning. The drop in 61mm kit fit perfectly with out needing to bore or even sand the case, the skirt fit perfectly.
I put everything back together but the plastics, pushed the starter button, and she started instantly. I let her warm up, then tuned the a/f mixture, didn't seem to need upjetting the pilot, nice snappy throttle response at 2 3/4 turns out.
Put the plastics back on, started right back up, took her for a test ride around the block. Only took her up to 40mph, but I could feel the increase in lower end power. Gonna take her on a longer ride this afternoon, then if all is well I'll hit the freeway for a short run tomorrow.
Tip: The first BBK I installed, I put the piston on, then the jug, and fought for a good 10 minutes getting the rings into the skirt by hand. Next two BBKs I did, I used a hose clamp to compress the rings, tapping the jug down onto the piston, pushing the clamp off, worked pretty good but scared me I was damaging the rings. This time, I installed the piston in the jug before putting the jug on. I had to leave the oil rings half out of the skirt in order to put the circlips in, but they tapped right in to the skirt no problem. This was the easiest of the three methods I've used to install the piston!
So long as she holds up, I'll definitely recommend this drop in kit for anyone who wants the biggest BBK possible without boring your case! And yes, it fits the BN157QMJ-3 perfectly as well as standard 157QMJ engines.
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Post by JerryScript on Jun 13, 2016 1:43:59 GMT -5
The metal head gasket is stamped into a precise shape, it is not flat, and is a crush design that perfectly seals when you torque the head down. Once crushed, the shape is changed, and will not crush properly again, so you have to use a new one each time.
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Post by JerryScript on Jun 13, 2016 1:39:02 GMT -5
Congratulations! Thanks for posting all these tips.
What are the results? Better take off, higher top speed, better throttle response throughout, maybe a bit of all three?
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Post by JerryScript on Jun 11, 2016 2:20:08 GMT -5
Welcome to the board!
Right on! You hear so many complaints, it's great to read good feedback about a company that does stand behind their products. Thanks for posting!
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Post by JerryScript on Jun 10, 2016 14:19:35 GMT -5
Just received the BBK in the mail. The quality of this Taida kit over every other BBK and head I've bought is night and day. All other pieces I've purchased in the past had rough edges inside and out, this one appears flawless! If it performs as good as it looks, I'll be buying Taida parts from now on.
My next day off is Monday, can't wait to get this installed! I'll post some pics, and the results.
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Post by JerryScript on Jun 10, 2016 14:12:39 GMT -5
John is my go to guy for CDIs and stators, very knowledgeable, and he has worked on your model, and he tests most parts before shipping! I would recommend his advancing angle CDI, several of us on this board swear by them.
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, I had to throw another blanket on! The ride means constant breeze, so get on your peej and ride!
