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Post by phattanglo on Jan 18, 2015 14:02:31 GMT
Can anyone tell me if this is likely to be genuine Vespa www.ebay.co.uk/itm/331431590019?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
I want to replace the catalyser exhaust on my 2012 px125 for a non cat exhaust, is the exhaust in the link the right one ? Also could anyone tell me the details of carb spec for both cat and non cat carbs , jets, slides etc, I would appreciate it as it would help to know what I need to change. I just want to make my scoot a bit nicer to ride and then maybe look at some bigger mods when funds permit. |
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Post by bryno on Jan 18, 2015 15:20:07 GMT
It won't be genuine, not at that price and not from that part of the world! they haven't copied the OE very well, the tailpipe looks far too long.
If you don't want to spend for OE price it won't be hard to find a good second hand pre cat exhaust.
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Post by phattanglo on Jan 18, 2015 16:47:40 GMT
Cheers, I've put an ad on the wanted section.
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Post by henri on Jan 18, 2015 16:51:17 GMT
as bryno says def not genuine ,an zoom on picture it dont look good quality , probably be a bugger to fit aswell, for a tenner more you can get em new in this country ,not OE but there ok n will fit , i wouldnt look for a pre-cat genuine as it will be old n probably close to rotting out ,tho they can be welded ,H
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Post by ianmartin40 on Jan 18, 2015 16:55:16 GMT
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Post by sime66 on Jan 18, 2015 18:08:00 GMT
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Post by phattanglo on Jan 18, 2015 18:16:26 GMT
Yes I'm watching that one.
I'll sort the carb jetting and slide etc then later if i fit a sip 2 or similar I'll only have the main jet to change.
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Post by rab on Jan 18, 2015 18:48:50 GMT
Why not just look for a p2 system or a sip they come up cheep enough second Hand and the jet is only a few quid bit of a false economy just buying a non cat 125 pipe unless you never intend to do any minor upgrades here ye go this ones on fleebay item number :
141543604597
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Post by phattanglo on Jan 18, 2015 19:48:45 GMT
Isn't that exhaust for a px200
Would it fit a 125?
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Post by sime66 on Jan 18, 2015 19:56:28 GMT
you can't use that; it's px200 - different, angled stub
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Post by phattanglo on Jan 18, 2015 20:11:18 GMT
you can't use that; it's px200 - different, angled stub Thought not. |
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Post by phattanglo on Jan 18, 2015 22:24:02 GMT
Just found a bit of info from Allstyles site.
If I read it right and if the jetting in my carb hasn't been messed about then I need a BE3 mixer tube and a No1 slide and everything else should be the same as a non cat carb.
Then it's should just be a case of plug chopping to determine the correct main jet.
Does this sound right and if so will drilling the air filter affect anything other than the main jet size.
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Post by phattanglo on Jan 19, 2015 14:14:40 GMT
Just remembered something I was going to ask.
I'll take the starter motor off when i do carb and exhaust., do I just tape the cable up to stop it shorting or do I need to do anything else
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Post by henri on Jan 20, 2015 7:25:48 GMT
careful of the jetting info on allstlyes site ,there my fave shop but have a px150 jetted same as px200 on there guide ,beedys1 has a mistake aswell ,same jettin for pre-mix an auto-lube , best ive been shown was by gazpx on here , "wolftuning " i think ,will trawl old posts n find the link ,
an just tape n tuck out the way for the motor wire if you dont want to strip it out the loom ,an you can also switch the horn to ac n dump the battery if less weight=more speed is ya aim , H
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Post by phattanglo on Jan 20, 2015 9:13:40 GMT
I think that with my huge mass losing a battery won't make much difference :-)
I've just seen this on ebay and I'm wondering if I should just bite the bullet.
141544818256
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Post by phattanglo on Jan 20, 2015 16:42:32 GMT
So I took the starter motor off and proceeded to adjust the pilot jet.
After 20 minutes of swearing and generally getting into a strop I realised the adjustment would be a bit easier with the choke off.
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Post by henri on Jan 20, 2015 17:40:56 GMT
classic DOH!!! moment , made me giggle ,weve all done em an ya brave enuff to fess up ,all credit to ya , an if a radical diet aint on the cards (i'd recommend a tapeworm )leave the battery n keep a spare on ,it helps counterbalance the engine weight givin better handling ,or like my mate does ride sat on only the right butt cheek, hangin off the left ,dont know if it works but is well funny to follow , H
oh an thats the pipe ya want ,
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Post by phattanglo on Jan 20, 2015 19:33:16 GMT
H, was it Wasp tuning by any chance. I've just happened across it and it looks quite informative. Based on the info on the website, am I right in thinking the px125x carb settings are the most applicable as a match for a Sip 2. |
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Post by henri on Jan 21, 2015 9:30:09 GMT
yep thats the one ,gazpx turned me onto it but all memory could dredge up was it starts with a wubbleu , an for the carb a standard exhaust wud be jetted same as a non-cat px-e/efl, for a sip2 most go up 2 sizes on main jet an leave rest as standard an its fine ,H
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Post by phattanglo on Jan 21, 2015 10:48:02 GMT
Cheers H,
I read somewhere that the efl carb slide runs quite lean for emissions.
I'm happy to leave it in but for the sake of a tenner wondered if a richer slide might help.
Also the components that are be3 or be5, what effect do they have.
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Post by henri on Jan 21, 2015 13:31:03 GMT
the be3 /5 atomisers control mixture in the mid-range/half throttle ,it breaks like this ,
0-1/4 throttle pilot jet/mixture screw ,
1/8 - 3/8th slide , cut out at bottom an pocket/dent in rear ,
1/3 - 2/3rds/3/4 atomisers
3/4 WOT (wide open thrott) main jet ,
as you can see theres a overlap between those transitions from 1 to tother , so its easier to simplify into 0-1/4 pilot/ 1/4-1/2 slide 1/2-3/4 atomiser 3/4-wot main , an if what you set yours at gives lumpy acceleration/revving make a note of where it happens in throttle position an that will give a idea of ya change to make , an the efl slide is very slightly leaner than a E 1 but as its not a throttle position your going to sit at you prob wont notice a thing , especially as a catalyzed px runs even leaner, a efl slide should be rich enuff .H
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Post by phattanglo on Jan 21, 2015 14:13:08 GMT
The efl is a 96 main jet I think should I get a 98 & a 100.
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Post by vespasco on Jan 21, 2015 17:45:42 GMT
Id probably get a 100 and 102 MJ. Especially if you're going for the sip road and do the air filter mod' too.
Fit your exhaust and 102MJ. See how it runs. Then decide if you need a change of slide and atomizer. Im sure they're others on here with the exact same set up as you want.
From my understanding, the atomizer (+ main jet stack) comes into play around 1/8 - 1/4 throttle all the way to WOT. With the circuits overlapping in various places as Henri mentioned ^^^
At high revs/WOT, its the holes in the upper part of the atomizer that make the difference. The more/larger the holes in the upper part, the richer it will be (at high revs).
This is why a BE5 is leaner (at high revs) than a BE3 for example. (The BE5 has smaller upper holes).
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Post by phattanglo on Jan 21, 2015 18:07:04 GMT
Thanks that's useful info, so leave everything as is apart from upping the main jet and see how she runs.
Will anything that needs changing be obvious?
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Post by vespasco on Jan 21, 2015 19:37:48 GMT
Its hard to describe. More feel and listening.
Ideally you want to be able to feel it keep pulling when you twist the throttle all the way to 11, without any bogging/hesitation/mis-firing etc. Ideally finishing with it safer ' a little bigger to be richer/safer if you like. To play safe you should always start with your biggest choice of MJ.
With a too large main jet you should feel it bogging and not going any faster despite twisting the throttle that last little bit. More noticably at high revs (@ approx 3/4 to WOT).
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Post by henri on Jan 22, 2015 10:38:49 GMT
bogging also "shows" as scoot will accelerate if throttle is shut slightly from 3/4- WOT , not massively but enuff to notice , H
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Post by phattanglo on Jan 22, 2015 11:35:01 GMT
Cheers, that all makes sense, I'll know what to look for come the time.
I was reading another thread. And I wondered what is meant by 4 stroking when referring to a px.
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Post by phattanglo on Jan 24, 2015 17:00:10 GMT
Decided against the Sip road 2 for now.
I won tbe sito std exhaust on ebay 20 squid inc p&p.
This isn't going to alter performance so much but with a drilled filter it should hopefully make it a bit nicer in traffic.
The reason I didn't go for the sip is because I happened to be reading one of my first posts on the forum in which you chaps recommended I consider a px200 as a means to some extra performance.
My son has a 200 but is thinking of going smaller so his wife can use it to commute also
I think I would either swap or sell my 125 if his wife doesn't feel confident on a geared scoot and prefers a twist n go.
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Post by phattanglo on Jan 24, 2015 17:35:13 GMT
I would be interested to know if a big bore kit on a 125 has more performance than a std 200 or is it just that the 125 is more tunable
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Post by rab on Jan 24, 2015 20:24:29 GMT
i think its more of a case that the 200 is already a 70mph scoot so people will normally only go 210 head and theirs less involved to get it there ie its already got good speeds same with a t5 its already got big enough goolies no need to mess with something that's dam good already were as a standard 125 especialy the newer models with cats and all the euro rules kak need more to get them a bit smoother a bit better on take off a bit better speed. there's the fact that some people tune instead of just doing there bike test which is actually a lot cheaper than tuning a scoot. personaly anybody who wants to go faster than 70mph on 10 inch wheels on a uk road needs a slap lol
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