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Post by snakeplissken on Jan 26, 2013 21:39:35 GMT -5
Good morning everybody...Let me clear up a few things: 1]I don't plan on racing this scooter 2] found it in the trash, thought I might get it running, I did, as a hobby 3] I'm not a mechanic type, just handy 4] it's just a recreational vehicle 5]My grandchildren will be visiting this spring/summer, thought it would fun for them 6] as teenagers, a lil' more power and noise would excite them, I thought. That's it, really simple. I TRULY APPRECIATE EVERYBODY'S INPUT, maybe this is the wrong forum for me.....Well as I weigh my options, Would any skilled muffler maker consider modifying my stock muffler? Naturally, you would compensated. {look at the pics at the start of this post] Are there any takers out there? I don't want to offend you but maybe the scooter was in the trash cause their is no way to make it faster than a turtle. I suggest you add a cutting blade to it and use it to cut your lawn. Just kidding
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Post by bobkat on Jan 27, 2013 8:09:54 GMT -5
GREAT IDEAS AND TIPS...pod filter sounds interesting, i just ordered A NEW air intake tube [hole and dry rot], 28mm i believe. so just remove the air intake tube and replace it with a proper pod filter, air box is now basicly disconnected and not in use. just leave the weird stock muffler as is or start drilling holes.lol. any suggestions on a good pod filter? the carb and jets..would i definitely need to rejet? as w/ other parts, they may be hard to come by..would a few carb pics help? money is not the issue, getting this baby "screaming" by spring is my goal. many thanks,,,bobkat
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Post by 90GTVert on Jan 27, 2013 9:08:39 GMT -5
UNI is the most popular pod filter.
Unless the jetting is wrong now and too rich, you will need to rejet. Carb pics may help someone tell you. I know what it looks like, but no idea what jets are in it. Your best bet would be to take measurements of the main jet and a pic.
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Post by bobkat on Jan 27, 2013 13:11:49 GMT -5
UNI pod filter, ok we shall check that out, try to get jet measurements and who might carry them. Thanks again,,,Bob More suggestions are always welcome. We were out zipping around this morning at sub 30degrees, runs great. Here are pictures of this garbage pickers haul:
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Post by kevin55950 on Jan 27, 2013 14:24:02 GMT -5
scootertuning.ca/en/68-air-filters The Stage6 ones are made like the Uni. They are a lot of sizes and styles. They are the one that gave me the most sound lol. The STR8 and BCD ones are having 35mm and 28mm connection and the metal mesh ones are easily washable with gas, that might be a good choice for you.
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Post by bobkat on Jan 27, 2013 16:24:13 GMT -5
kevin....i'm in, i followed your link detailing the pod filters. STR8, BCD ,metal mesh..not sure which ones are available and which ones are O/S? but i would like to purchase one. i also believe i found a dealer w/ various jet sizes for my carb/engine. most stock use 75..80,85 or 90 is recommended for pods? could you help me out with the pod that's best for me. thanks for all your help,,,,bobkat
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Post by kevin55950 on Jan 27, 2013 18:23:58 GMT -5
Can you install a pod filter straight? Some scooter need angled pod filters to fit. scootertuning.ca/en/air-filters/6026-airfilter-str8-35-28mm-straight-connection-white.htmlThe price of those one is pretty great and they have the 28mm and 35mm connection. They are easy to clean. If you order it, it will be on the next order from the manufacturer and you'll receive it. I don't know the jet size of your carburetor, there is different thread size for jets. They are generally like the Dell'Orto 6mm thread size jets, but I'm not sure for your case because it's a screw type carburetor, not a rubber mounted. The PGO scooter have those screwed carburetors but they are having some really small main jets. Look at your main jet and tell me its size. You should add a jet that is 5 to 10 points higher than yours.
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Post by bobkat on Jan 27, 2013 20:47:51 GMT -5
Lotsa room in front of carb for a pod filter, angled probably more room, clears some wires. 28mm would be the size needed, OD of carb port. LMK what you want me to do to get one? sent a little intro to your email. I will try to get to the main jet asap, found sizes from 75-100 from a dealer on web unless u have them, I didn't realize thread sizes could be an issue, nothing is simple or easy. thanks again,,,,bobkat
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Post by bobkat on Jan 27, 2013 21:11:04 GMT -5
Back again....it is M6 x .9. So if the stock main jet is #75, I need an #80 or #85. Here is the readout from the dealer:
[These are carburetor main jets (M6 x .9) for the JOG Minarelli 49/50cc 2-Stroke engine. 1E40QMB 1PE40QMB These come in various sizes depending on your application. #75 is standard replacement with stock air box. , the #80 and #85 require a performance air filter system and the #90, #95, and #100 requires the performance air filter and performance exhaust system to get top performance. Installing a Performance Air Filter and Performance Exhaust System will give you that edge you're looking for.
Mechanics Note: If you increase the size of your stock carb jet or upgrade to a larger carburetor with larger jets, you will want to improve your air flow both in and out of the engine. For smaller upgrades replace the stock air filter with a Performance Air Filter for this engine. If you upgrade beyond small adjustments you will want to install a Performance Exhaust to handle the increased combustion and minimize back flow issues.
Altitude can play an issue in scooter performance. When you are dealing with elevation you will want to rejet to prevent your engine from siezing and requiring a rebuild. You will loose about 3% in power for every 1000' in elevation. At 4000' feet you will have lost about 12% of your power output. You will want to go down one (1) jet size for every 1750' to 2000' you go up in elevation. When the air is colder it requires bigger jets because cold air is more dense. If it is 50 degrees colder you would increase your jet size at least one step up. If you don't your engine can sieze on you.]
Hope that helps....bobkat
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Post by kevin55950 on Jan 27, 2013 21:22:42 GMT -5
You don't have a IPE40QMB engine, and your carburetor is different. If the carb is like the ones on pgo scooters, the jets are way smaller. I only found them at a local motorcycle shop. The best way is to take out your main jet and go to a shop and see if they can order the jets you need. scootertuning.ca/en/carburators/5054-main-jet-set-motoforce-6mm.html for 6mm jets, box 75-98 can be allright if it's the good jet thread for you. Try to adjust your needle to the lowest clip, it will be richer in fuel as the needle will be seating higher in the carburetor slide. It can be enough, but it might not.
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Post by bobkat on Jan 28, 2013 8:53:34 GMT -5
wow, i'm confused..on the back of the crankcase cover is engraved JD1PE40QMB w/ *85070096* underneath it. Is there another place to locate the serial number for the engine? 1st, I can't get an exhaust because it exits a rear port [see early post pics] and now I decide to go in a different direction w/ a pod filter and run into another roadblock. How do I find out what engine I have?, I can't believe a scooter [new-like w/ 54 miles] could have been modified that much. Anyway does any of this stop me from ordering the suggested pod filter? I'm sure I can find a main jet that fits [#80 or #85, M6 x .9], once the carb is removed. There are not alot of shops around here and less that know much about scooters. I assumed that engine had a stock carb and I was basing everything on that??? any suggestions, please, thanks,,,bobkat
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Post by kevin55950 on Jan 28, 2013 9:19:50 GMT -5
D1E41QMB is the engine code. Take a pod filter and adjust your needle. Did you know how? I can explain it. You might have to change your main jet, the needle adjustment might not be enough. We don't have those jets on the website, but I found somewhere some jets that can fit: www.ebay.ca/itm/SET-of-10-MAIN-JETS-for-SYM-Kymco-PGO-2-strokes-GY6-50cc-139QMB-78-100-4mm-/400326871049?pt=Motorcycles_Parts_Accessories&hash=item5d35574809&vxp=mtr&_uhb=1#ht_2640wt_1163Your carburetor really looks like the PGO ones and are common on chinese/taiwanese scooter like Kymco, Sym, PGO, etc. Those jets are for those scooter. The 78-100 box should be good for you. Don't buy chinese pod filters as they break easily, I brought my ATV with 2 chinese pod filters and the carburetors were always full of dust, the metal mesh that is supposed to filter the air was going off the aluminium base, I brought new ones and I got the same problem. The STR8 one I sent you the link will be good for you. You're always better to look on your scooter than on the internet for measures and parts type, as there is so much changes in chinese scooter during years that you can't see if the information you get is true or false for your case.
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Post by 90GTVert on Jan 28, 2013 10:09:28 GMT -5
I've used the Chinese made dual stage foam pod filters from eBay. Cost about $15-20 shipped.
EDIT: Can't find them in 28mm inlet size though.
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Post by kevin55950 on Jan 28, 2013 10:42:58 GMT -5
You have ones at 15-20$, I was talking about those at around 5-6$ shipped that looks like K&N with chrome tips. Some are really cheap, I ran the ATV for an hour and one carburetor was dirty, the top of one pod filter got off just by taking the carb out, the glue that held it in one piece "unsticked". They were brank new when I installed them.
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Post by 90GTVert on Jan 28, 2013 11:11:45 GMT -5
Another tip for finding filters if you like K&N style... valve cover breathers. Auto parts stores often sell genuine K&N breathers that are just like a pod filter in clamp on styles. Last one I bought was under $20 with a nice chrome top w/K&N logo. No offense to scooter shops, but you can spend half what some charge and get essentially the same product if you don't care about Stage6 logos and Japanese writing and stuff. Here's a shieled one I have too. Thought it would be nice to shield some of the road debris from where it had to be installed.
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