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Post by ltdhpp on Oct 7, 2012 11:55:37 GMT -5
As I was about to replace the factory intake manifold again, I noticed the Teflon intake costs almost the same as two OE ones... and that it and the Mikuni fuel pump are like a match made in heaven. Its got two vacuum ports, one fat one for the fuel pump and a smaller one for the valve on the carb. The OE pumps are known to be barley able to do the job, and if it were ever to quit on me I'd sure wish I had paid $30 for a better fuel pump... so I did. I kept reading threads on installation issues for these, so I thought I would share my efforts and results. I should start by mentioning this scooter is a less common engine and frame style - its a 1P57QMJ on the larger touring frame you usually see 250cc motors in. First, from reading on here I knew the intake was slightly big for a factory size 24mm carb, but I'm a crafty individual so I wasn't worried. Luckily I found a perfect thing to use for a sleeve in a box-o-junk at my work full of 'might use that for something' stuff we save. I really wish I could tell you where to find one, but I can't. I can tell you what it is though.... When we get new radiators to install in cars, they come with caps over the hose and line hookups. Sometimes plastic, sometimes rubber, and I found a rubber one to trim up and use for this. My other plan was going to be to layer up some 35mm shrink tubing on the carb, if that exists. It looked like you could just crank down on the thing enough to hold it, but I didn't want to risk an inferior seal.   BY THE WAY The 30mm designation for this intake I can only assume refers to the size of the carb butterfly it is made for, NOT the inner diameter of the intake manifold inlet, or outer diameter of the carb its made for. This made the quest for a sleeve even more difficult, at first, lol. |
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Post by ltdhpp on Oct 7, 2012 12:08:39 GMT -5
As far as actually installing the intake to the head, it fits like a glove, but I was not able to reach in and stick the carb right in or scoop it out like with the original one. There are definitely clearance issues with the frame and cross-member (this is a stock carb) trying to install the carb with the intake in place, BUT I was able to install the carb into the intake first, then install them together, and it went fine. this is mildly inconvenient now to remove the carb later... but I can deal with it. I used a little silicon grease to keep the tiny O-ring for the intake in place... don't loose it! Depending where it is to begin, you may have to re-position the angle of your throttle cable too. Now... will this still work with the factory airbox? I dunno. I have a tube and pod filter on mine... The fuel pump install was easy... it almost lined up with both holes... You could widen the holes out some if you want, or use one bolt and a quality zip tie. Don't buy cheap zip ties... Here are some pics of everything installed:    |
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Post by Lukain on Oct 9, 2012 20:33:47 GMT -5
Nice, very nice...Gives me some thoughts regarding my cold air intake. Thanks for the pics. What is that blue item in the fuel pump pic?? +1 bone
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Post by ltdhpp on Oct 10, 2012 12:03:54 GMT -5
That is the fancy blue CDI... I found it with a orange coil/wire for $25 and couldn't resist. I can't say it runs better with it, but my stock one was definitely rev limited to 7k rpm. In stock form the scooter didn't see 7k rpm anyway so I never noticed until I swapped it back to see if the new one was crapping out on me. It wasn't.
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Post by jcz775 on Oct 10, 2012 13:28:30 GMT -5
That's cool how you have the GAS filter right next to the Valve cover, and the Air filter next to the tire. WOW.
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Post by ltdhpp on Oct 10, 2012 17:49:41 GMT -5
That's about where the gas filter was when I got it... is that no good? Too hot there or something? I am open to input, no sarcasm required.
And I don't ride in the rain ( or scoot far enough to get caught in the rain if there is any chance of it ), if that's what you're getting at about the air filter. I do have my eye on one with a nice chrome splash guard on it though.
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Post by Lukain on Oct 10, 2012 18:06:22 GMT -5
Splash guard? I was thinking I would have to fab one...But if you know of a pre-made chrome one hit me with a link.
And for what it is worth, ALL the pre-fab cold air intakes come out roughly in the same area and I have heard of NO troubles from them. If the bike is made for the drag strip you take off the air filter and if made for street use you add a filter which is what he has done. This is done exactly as it is intended. Further more the air filter is kicked off away from the tire so that it wont pick up tire splash where as if it was directly behind the carb it would pick up both engine heat and tire splash. And with cold air intake they are designed within certain specs for length and bends for max performance. That set-up is near perfect...
Fuel filter? There is nothing wrong with it right there. Cause if that was truly an issue then the carb wouldn't be placed so close to the valve cover... Further that head/any head isn't gonna produce enough heat to do anything to that fuel filter or the fuel in it. It is too far away. Now if it was laying on the cover, that would be an issue. plus you have fuel lines that are routed near the head cover. Should we then consider that an issue on all bikes as well? Also what about any car, truck are what not. The lines are a lot closer to sources of heat a lot higher than that head cover.
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Post by ltdhpp on Oct 11, 2012 12:52:10 GMT -5
Here is the one I've been looking at: www.ebay.com/itm/120515375150?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649 The OD of the end of the tube I have is about 48mm, that's why I'm shopping for that size. The tube I am using came with a nice fancy cool looking filter completely enclosed by a chrome cover with a baffled air inlet, but it made my scooter run like complete ass... Im sure this was mostly due to my fuel ratio being off and/or the muffler being plugged up at the time, and I haven't tried to get it to run right with that filter yet since I took care of the other problems. I might give it a shot once I'm done with everything else, because its pretty freakin cool looking. |
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Post by Lukain on Oct 11, 2012 15:35:02 GMT -5
Wow, I like that. Very fair price. Gonna bookmark that.. Thanks  |
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Post by ltdhpp on Oct 11, 2012 17:36:02 GMT -5
no prob!
The one I have on now was only $12, is WORLDS better quality than the cheap scrappy filter and even comes with a pre-filter.
I found a lot better deals by searching for only "XXmm air filter" and leaving out anything about the scooter from the search query.
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