stitts
Big Dawg
JCL MP250A
Posts: 28
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Post by stitts on Jul 21, 2011 21:54:28 GMT -5
I saw a thread of a person who used pvc pipe and routed it towards his foam filter. You don't have to have it directly hooked up to the filter. You just need it close to get good fresh air to the filter. I got my scoot and tore into it to find that the stock air boxes are jokes. I left the tube, but cut off the box and attached a foam filter.  You can see the filter up behind the wheel well I made. I used a bucket cut up to fit up in there and zip tied it in. I had to do this to fill the void of the air box.  I wanted to use pvc pipe but with the angles I used tubing from swimming pool pump kits worked best for most of it. I ran it from the front fairing near headlights.  I ran that down under the foot pad to the back then next to motor I hooked it up to pvc pipe. I was worried about the pool hose melting against the trans.  At the filter you can see the elbow directing the air to it.  I will see how it runs for awhile and clean up the intake at the fairing make it a little prettier. Thanks to all for the good tips just hope to give some back. |
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Post by mainepeace on Jul 22, 2011 11:44:54 GMT -5
Interesting. Hope it works out for you. I have the feeling though that the length of the tubing might be detrimental to intake flow at higher RPM's, but who knows. It might work great on your setup. What matters most is getting the cool air.
Oh, just noticed it just directs air and isn't plumbed directly into the air filter. Great!
I FINALLY figured out what the two holes on either side by the "rear passenger non-footrests) are for... intake holes to a rubber CAI for the stock airbox. I ended up removing the rubber tubing (which by default had a huge kink in it) and swapped on a standard intake port/anti-reversion cover and it gained a bit of power.
Greg
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stitts
Big Dawg
JCL MP250A
Posts: 28
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Post by stitts on Jul 22, 2011 12:19:19 GMT -5
Intake may not be the correct word for it, but I just trying get cooler air back to it. After all the air has to go through radiator past gas tank and around engine before it gets to my filter. The vents on mine werent even close to the air box. The only inlet for the stock box was just behind that foot peg. I have 4 miles of gravel before i hit highway so I really have to dust proof this thing. In the second pic you can see the red setting on the trans. That is a crankcase filter for the rear axle vent line. I am going to cut the lip off of elbow next to filter to open up the direction alittle. It was raining really good here this morning so I drove my truck today.  . I hope to get out early so I can get home and take it out ;D. If any one has suggestions please let me know. Thanks |
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Post by rollins244 on Jul 22, 2011 15:06:36 GMT -5
I work at a pool place!! Good idea and cheap.
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stitts
Big Dawg
JCL MP250A
Posts: 28
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Post by stitts on Jul 25, 2011 10:20:37 GMT -5
;DGot to ride into work today. Made my whole day. I do have to say that I notice a difference. I increased my top end by about 3-5 mph. I even noticed that my engine stayed cooler. It must be getting enough air back to it that some of it just stays there and cools the engine. I think this mod is a keeper, and suggest anyone else to try. I hope they get the same results. I am getting 73mpg. I can live with that. Takes me 7 gallons to get that far in my truck.
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Post by mainepeace on Jul 25, 2011 18:31:56 GMT -5
Well I'm very glad that it worked out for you! Definitely shows how the undercarriage temps can get pretty hot. Also, without adequate ventilation it is a performance robber. I might have to think about doing a similar mod on our rentals.
Greg
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Post by califmike33 on Jul 25, 2011 19:48:54 GMT -5
I did the samething with a uni filter on my 150cc and rejetted the bike, and felt no power gain at all, just a little louder. I think its all placebo affect, you need to change your exhaust and air fllter then you get a small gain.
I was very disapointed in changing my filter just for a louder sound.
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stitts
Big Dawg
JCL MP250A
Posts: 28
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Post by stitts on Jul 25, 2011 21:00:37 GMT -5
I did the air filter awhile back. That is why I like to do one mod at a time. If you make several mods at once then you can't be sure which one has an affect. It hasn't made it any louder. I am just getting more air to the intake. Just like on a car getting more air to it makes a horse power increase without anymore mods. I have done this similar type of thing to my truck with a v10.
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Post by domindart on Jul 27, 2011 21:31:37 GMT -5
I have a 50cc peace scooter that I may try this on. Needs more top end.
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Post by mainepeace on Jul 27, 2011 22:14:34 GMT -5
It shouldn't really affect top end unless there is something going on that is affecting it, like too much hot air and not enough airflow, which was stitts' issue. Peace Sports 50's generally don't have that issue, unless you are currently in the desert or similar area.
If you want more top end you should look at other areas.
Greg
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Post by domindart on Jul 28, 2011 1:13:46 GMT -5
Okay on to the next option... change weights in variator? whatever that is.... haha
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Post by domindart on Jul 28, 2011 1:17:37 GMT -5
(I took the air filter out of mine tonight for shzzz and gigles and it didnt run at all.. just stalled and wouldnt start.. put it back and not gonna mess w the sensitive induction on this scooter haha)
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Post by keetarider on Aug 4, 2011 0:51:35 GMT -5
This worked for me. Had to open the exhaust up a little, and re-jet of course, to make it go go. It has its drawbacks, mainly in the rain, but a I keep a couple terry cloth wrist bands, to slip over the disc intake, should I catch a shower. Doesn't seem to ship water through to the paper filter.  |
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Post by jimh on Aug 16, 2011 15:05:37 GMT -5
That looks nicer than PVC...
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Post by keetarider on Aug 22, 2011 19:23:25 GMT -5
Yeah, it does. At the time I wasn't trying to get cooler air to the carb, as much as, I was trying to open things up, and lose the big fugly piece of black plastic. I think it did both quite well. It's an import, and 50 dollar mod. It's also an adjustable flow disc filter, and comes with a nice stainless steel intake pipe. It actually fit the bike well enough, that I was able to use existing airbox bolt holes for mounting. Fabrication for mounting was a snap. That's always worth a few extra bucks.  |
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stitts
Big Dawg
JCL MP250A
Posts: 28
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Post by stitts on Apr 1, 2012 16:25:01 GMT -5
So after this spring so early here in iowa. I got my scooter out and cleaned carb changed air filter and just looked it over. Rode it to work twice then had to put it up for few days waiting for a carb kit. The air fuel mix screw vibrated out. So i took the opportunity to get a new jet. So i put in a 137.5 main jet. After 500 miles i checked the plug and everything is looking good. I bought a 137.5 and a 125, so i started with the 137.5 to work my way down. I am sticking with the 137.5. Before i increased my topend with the air tubing. Now i am cruising at 70-75 no problem. I can get it up to 81 (gps) on level ground. 80 miles of my daily commute are on four lanes, so keeping up is a must.
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Post by twiztedxtasy on Apr 2, 2012 14:11:52 GMT -5
So after this spring so early here in iowa. I got my scooter out and cleaned carb changed air filter and just looked it over. Rode it to work twice then had to put it up for few days waiting for a carb kit. The air fuel mix screw vibrated out. So i took the opportunity to get a new jet. So i put in a 137.5 main jet. After 500 miles i checked the plug and everything is looking good. I bought a 137.5 and a 125, so i started with the 137.5 to work my way down. I am sticking with the 137.5. Before i increased my topend with the air tubing. Now i am cruising at 70-75 no problem. I can get it up to 81 (gps) on level ground. 80 miles of my daily commute are on four lanes, so keeping up is a must. what scoot do you have O.O 81 on the flats and no gear change?! want...that... lol |
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Post by timelancer on May 3, 2012 20:43:26 GMT -5
I tried this idea too using the circular holes next to my seat, with automotive CAI flexible tubing, cut a hole in the middle and ran it up to both sides, it helped until the whole thing ripped in half. coming up with a better idea to help it out. my engine gets real hot and it not only provided cool air it also created a buffer in between the engine and the filter.
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Post by johngps on May 24, 2012 5:32:20 GMT -5
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Post by spewya on Jul 4, 2012 13:20:10 GMT -5
do you have to change the jets if making a cold air intake
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Post by greywolf187 on Jul 15, 2012 17:25:14 GMT -5
I don't know. but you could try and see what happened. all I did was go to the auto parts store and buy a short Radiator hose and cut it to fit mine. works good too.
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. I hope to get out early so I can get home and take it out ;D. If any one has suggestions please let me know. Thanks
