Modern Vespa

has anyone got there port timings after fitting a 177cc kit?

Yes

Do you have a wee bit more info to offer first?

was hoping to collect some info? did you bolt on your kit or set it up for a certain style of riding?

a quick description of what you wanted,just a bolt on,touring or race and which kit,exhaust,carb and jets you used would be good?

Port timing is not the place to start...
Its not what I want... Its what YOU are making the motor for... Mine is for high speed endurance riding... But possibly for light-to-light racing.

a quick description of what you want
just a bolt on?
touring?
race?
which kit have you investigated & why have you chosen that particular kit?
" ... exhaust ... "
" ... ,carb ... "
jets will come.
What is your budget?
What is your mechanical apptitude (or are you going to pay someone to do it?)

Its easy to blow $1200 on a gearbox/clutch/primary drive setup, so ensure it is what you wanted before you start.

There is no point randomly asking others what their setup is, as it will likely be irrelevent to what you are trying to create.... Give us a starting point pleas, else we cannot help.

Btw; it was a 2-port VBC Super motor... To start with... & it became this...
modify VBC1. 2-port -got fuel, need tim(ing)? Only 67mph

From your enquiry, We dont even know what motor you are starting with!

But I would like to know your port timing and how you built your engine,also what jetting you ended up with? Have you got this info?

Cheers

Have 177 with 116 main.

What the hey, I'll give it a shot...

I put on a 166 kit & left the port timings as they were, but matched the intake ports to the case. I built the motor w/ pretty much stock parts other than a SIP Road pipe and think I ended up w/ a 102 or 105 jet. Your jetting will probably need to be different depending on a lot of things.

That does answer your questions. Does that help?

And - port timing info
https://modernvespa.com/forum/post1909039#1909039
how to build a motor
https://modernvespa.com/forum/post1842800#1842800
how to build a motor in pictures if that's more clear to you
http://gallery.vespresso.nl/Vespresso/Referentie/P200-85-Motorblok-Opbouw

Problem solved.

Are you creating a thread that is a compilation of port timings or are you trying to achieve something specific with a particular bike? Are you just terrorizing us with vagueness?

We have a Polini 177 bolted on to our 3-port case, SIP Road pipe, 20/20 carb, 110 main. Stock everything else. Scoot has lots of torque, is plenty fast and will cruise happily at WOT all day.

The average person that bolts on a kit and never measures port timings. So you're question is very specific. Port timing alteration is usually done to work with a specific exhaust to hit a target power band. Then adjusting port timings usually involves packers to raise the barrel and removal of material from the ports/cylinder/cases. All which is rather involved.

thankyou SoCalGuy

I thought my question was simple,lol. I'm not after advice on a certain kit or I would of mentioned one but would like to know more about port timings and what set-up your running with those port timings? exhaust,carb etc

so saying 'have a 177cc with a 116 main' is pointless,,I can see why you replied like that,lol but I asked for port timings? most people look past the ports when fitting a kit either because they dont understand them or are happy just bolting a kit on and hoping for the best

I know the basics,just want to see what others have done

specific or simple?

do you have any port timings and a set-up list to go with it?

Port timings can be altered in an almost infinite number of ways depending on the application and different components involved. You should start by deciding what you want your engine to achieve.

thats cool SoCalGuy but I'm not asking for advice on how to do it just yet,I've done lots of research and know what kind of engine I want to build

would like to see other peoples port timings and set-ups and a small description of what they built the engine for,touring or race?


again just for anyone else wanting to give me advice on how to tune my engine,,have you got your port timings?

Check this thread.

Vespa Sprint Street 'Sleeper'

I'm guessing very few ppl here are altering their port timing as a LOT more than just that is involved. A quick search turned up only three threads that might enlighten you and in addition to the port info link I posted above, One Who Knows(with the initials RH) suggests Norrie Kerr's tuning book for best technical source. Check the links & find the book for more on what you are asking.

Induction Port Timing

exhaust port timing help .with the maths please

Porting 101

what is it you think I'm asking?

So, you are not asking for advice on how to do it, but you are? And you do know what kind of engine you want to build but you won't tell us to get a more specific answer?

not to sound rude,but what was my first question? port timings?

if you fitted a malossi 166cc kit and left the port timings as they were,what were they?

and what carb did you use to end up with a 102/105 main on a 166cc?

I've asked if people can give me there port timings,why is that so hard to understand? lol

why are you trying to change the thread to something else? your changing my posts

What are you talking about - I'm not trying to change anything. I quoted word-for-word lines from your post that, I think, are confusing people. Just trying to be helpful by pointing out what is so confusing about your posts.

Good luck, hopefully someone can give you the info you want

I'm trying to talk about port timings......what you talking about? lol

you quoted half a sentence,which would confuse people,lol


if you read my first post on this thread,how the hell is that confusing?,lol

The classic new guy who lol's every sarcastic comment he is directing toward the moderator who is trying to help direct him.

I've tried to help you best I could w/o being rude myself. I've linked the few threads I could find that discussed your area of interest & your specific inquiry. I have NO idea what my port timings are and think most ppl here are in the same boat. As already mentioned, most here bolt the kit on & trust the manufacturer plus any reviews they've read.Those few in the know are making the posts that I and others have offered you links to.

Slim pickings, I know, but a well trusted expert suggests a good technical book if you wish to learn more. I tried to answer this, but again have no need personally to know the port timings. Perhaps I should have confessed that at the outset. I'll be more than happy to answer more of your carb questions/jetting when I can verify my setup(s) in a few weeks when I return home.

If ppl here had an easy/quick answer for you, I'm sure they would tell you. Ppl here ARE trying to help you best they can.

please dont try and make this any worse than what it is,I'm laughing because its funny,,people think I'm asking for advice when I didn't mention anything of the sort

the mod above quoted half a sentence to make it look different,,please look above to realise all I'm asking for is port timings


someone help,lol

cheers voodoo,look forward to setting carbs up in the future

not sure how to ask now though,il try to complicate things next time,lol

I quoted what I thought were relevant (that is, confusing) parts of your post. Not "to make it look different". Give me a break - I'm not trying to mess with you.

You are in the wrong forum. A majority of people here are not going to know anything about their port timings. Most people here are doing maintenance or simply bolting on parts. That level of tune is more common with Lammy people, Mark Broadhurst and Germans on smallies.

Maybe at first, but Sorry for not using your complete posts, but this looks like your handwriting

chill, read the links & get the book

could I ask you one question?

if you didn't have port timings after fitting a 177cc kit why did you bother posting? because thats what the question was

you need to read this all again Voodoo

when did I ask for advice? I asked for parts lists,jetting on your engines and port timings

please have a good read

Oh.
Well OK, & maybe I should have my dictionary close at hand when I do to avoid further confusion on my part.

This seems to be going nowhere & because I do NOT know my port timings, I'm done here.

I'm asking myself the same question.

Pleasedtobeefyou reincarnated?

did he ask a simple question and get bombarded with people trying to help with something he didn't ask?

your sentence would make perfect sense if you removed the '&'

is it the port timings you want?
george

what made you think that?

its in the title?
George

what are YOUR current settings?

Calculations, calipers, micrometers, rulers, angle measurerers will supply the answers

& AGAIN a request...
what do you currently have?
what motor do you have?
What are you trying to achieve?
what level of tune are you going for?
are you going to pack/shave the barrel?
what SHAPE ports are you trying to achieve?
what 177 kit are you planning to use (DR, Polini etc...)?

BTW: I could be helpful, but YOU also need to put in some form of effort to get useful answers, else (as it appears) you are simply wasting our time & that is simply wasting our time!
Ask RetroGuy what he went thru when he started here will silly questions & repeating posts... but we bashed it out of him & thirty something pages later he had rebuilt a scoot with our help.