Exhaust for boring stockish Peugeot103 setup

i cant believe i have to retype all this (damn browser)... well here we go again.. so i'll try to be short

looking for an exhaust. every one says go circuit. i'm leaning towards 1977 selection. dont have pedals so im not worried about pedal clearance. would like to keep center stand and custom made launch lever that i hope to god doesnt get in the way. dont know if i can rev high enough for big boy pipes like gianelli black gun. dont have a speedo so i dont know how fast im going but the top seems like 45+, low end could be better....SHA aint helping.

the specs

tsm head

modded stock cylinder (exhaust ported & cut a boostport/third transfer)

polini reeds / malossi intake / SHA 15.15

derestricted exhaust

5 coil hardwired

3 balls

2 star springs

1 featherlight rider

vogue// heard they were good stockers...

https://www.1977mopeds.com/product/1588/Peugeot-Vogue-Gianelli-Exhaust/

treats simonini circuit//mixed reviews but overall positive. seems to be the peoples champ.

https://www.treatland.tv/peugeot-moped-simonini-circuit-pipe-p/peugeot-simonini-circuit.htm

1977 simonini circuit// what im leaning towards. looks to have a nice wide range.

https://www.1977mopeds.com/product/1993/Peugeot-Simonini-Circuit-Exhaust/

proma// good enough for hobbits.. cant go wrong here.

https://www.1977mopeds.com/product/1583/Peugeot-Proma-Expansion-Exhaust/

proma "stye"// crappier and jankier? look that way form the photo

https://www.1977mopeds.com/product/3240/Peugeot-103-Proma-Style-Exhaust/

Last but not least gotta address the exhaust mount. got the 'Merican screw/coupler style cylinder. these all got flange mounts.(some come with screw type). is there an adapter? is this guy it? i dont have the tools/resources/can justify fabricating one for a non super blasty bike. i mean i guess its kinda blasty for a slight modded stocker.

https://www.treatland.tv/simonini-exhaust-flange-set-for-MBK-peugeot-p/simonini-exhaust-flange.htm

(edited)

Re: Exhaust for boring stockish Peugeot103 setup

yeah i've been down this road and so have most people with stock-ish peugeot setups.

i'd say if you're going the 3'rd transfer route get a good used Vogue cylinder (get ahold of christophe(tomahawktuning), johno (blkblk) or chad burke or someone who has stacks of euro shit laying around. Those can be ported out pretty aggressively and run the big pipes.

if you're really against a big pipe, the simo circuit is OK. I have it on my sachs and i think its doing its job down there. It has broken like 50 times and been rewelded, but thats most pipes for ya, and at first it wasn't very well secured. The powerband on stock is really high and comes on kinda weak, but it pulls well from 8k upwards.

i'm not sure what to think about that simonini on '77... haven't heard much about it.

the other pipes are pretty much a joke, from what i hear. I've tried getting a FACO to work on my bike after a lot of modification, and it isn't bad, pretty torquey actually, but this is variated and i want it to wind out!

i've got a new stock-ish peugeot circuit pipe option in the works right now. I'll probably have the prototype worked out this weekend then its a matter of testing and getting the mounting perfect-o to clear everything. It might be on shelves in a month or two or if you want to email me i might be able to get you a test version. I'm pretty excited...

Re: Exhaust for boring stockish Peugeot103 setup

well when i had the bike in a million pieces/ had to completely rebuild the top and bottom end so i had time to tinker with the cylinder. so i cut a boost port and drill a hole in the piston to essentially make a third transfer... i'l check with johno to see what he has this weekend.

not opposed to a cool dude big boy pipe but i dont have a tach to check what kinda RPMz im be spinnin'..i'm down to space monkey that prototype exhaust.. emailing in a minute.

whats the word on converting from screw to flange?

Re: Exhaust for boring stockish Peugeot103 setup

hmm.. any one play with those SPX pipes? wast of time? better spend the the extra 50 on ninja/gianelli instead of fiddling and bracket fabbing?

https://www.1977mopeds.com/product/1601/Peugeot-SPX-Simonini-Exhaust--Carbon-Fiber-Black/

Re: Exhaust for boring stockish Peugeot103 setup

im going to bump this.

does this mean that stock peugeot cylinders share the same size threading as motobecane cylinders? (re: mounting moby pipes on pugs )

https://www.treatland.tv/simonini-exhaust-flange-set-for-MBK-peugeot-p/simonini-exhaust-flange.htm

Re: Exhaust for boring stockish Peugeot103 setup

i guess an issue would be pugs uses a bracket as engine mount and moby engines mount to the head which makes them more vertical..

Re: Exhaust for boring stockish Peugeot103 setup

There's an article on the wiki about mbk/peugeot exhausts.

I would vote for:

1. Real proma

2. Vogue.

The spx is a different model than the 103 and the exhaust mounts on the opposite side, so stay away from any that say spx.

That threaded adaptor should do the trick if you get a flange mount pipe. Buy a setup and get it going!

Re: Exhaust for boring stockish Peugeot103 setup

well i guess the original thread is a moot point somewhat. i'm just not satisfied with the performance in an area with hills, long stretches, and stop&go city traffic. if i was a lazy man i guess i should go get a 70castiron+g3 and be done with it.

but i like tinkering with the stock50cc (attempting to utilize the full potential of the cylinder) so i'm thinking. if i going to pull it apart..i'll port the exhaust and cut 2 more boost ports. i was just thinking of not making a flange to use peugeot header and if i can get a moby ball joint it'll save me some time. i'm only leaning towards the g3 because it has a wide range and has known to work with stock cylinders.(since mine is modified it should hit the necessary rpms) my low end is pretty weak and is screaming for a clutch pulley. it just so pricey building a 50 vs 70.. (edited)

Re: Exhaust for boring stockish Peugeot103 setup

Pug nut is longer then the Moby because the head has a deeper recess on some of their cylinders, so generally speaking a Pug exhause will transplant to a Moby easier then the other way around...

M C Wrote:

-------------------------------------------------------

> im going to bump this.

>

> does this mean that stock peugeot cylinders share

> the same size threading as motobecane cylinders?

> (re: mounting moby pipes on pugs )

> https://www.treatland.tv/simonini-exhaust-flange-s

> et-for-MBK-peugeot-p/simonini-exhaust-flange.htm

> https://www.treatland.tv/v/vspfiles/photos/simonin

> i-exhaust-flange-2T.jpg

Re: Exhaust for boring stockish Peugeot103 setup

i'm having difficulty finding information on this but at what rpm will the doppler clutch pulley engage?

Re: Exhaust for boring stockish Peugeot103 setup

I heard that out of the box they engage at 5500

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