TPH Part Selection

Hi there guys going to be buying some goodies just need a bit of a hand picking out a gear-up. On the malossi ones they say only up to 98 model typhoon or am I reading it wrong? Can someone help me find a good one with the price £55 or under, thanks.

Also I'm ordering a : Black DellOrto PHBG 21 DS Racing (21mm)
Does anyone know what size jet thread these use (5,6mm?)

And then I need help with setting up this carb so could someone give me a rough idea what roughly what size jets I will be needing with this setup? I will order a jetbox but just need the sort of area jetting I will need to be running.

(STANDARD JET WAS 53)

LASER XPRO EXHAUST
MALOSSI SPORT CYLINDER KIT (70)
POLINI OPEN AIR FILTER
+21MM CARB THAT IM PURCHASING

(GOING TO BE PUTTING IN 4.5g ROLLERS ASWELL IF ANYONE NEEDS 2 KNOW)

Please help me out here, cheers guys!
P.S would appreciate some help from you minor because your an expert with piaggios
:tup:

 

thanks for the gear-up links although most of them are secondary but no they arent 40 topics with the same setup as mine actually thats why I made this topic otherwise I wouldnt of had to ask. minor can get jetting nearly spot on as ive seen him do in other topics people with 172 kits and a decent setup so im sure someone could do mine?

 

Could wait for capri dave to reply as he has nearly the same setup

 

terr0 would this one:
http://scooter-center.com/catalog/produ ... ecd6727c5d

be suitable for my setup, as I just read someone elses thread and you said there setup wasnt suitable for that gear-up kit?

 

when you say std jet is 56 or whatever...you mean in your 17.5mm..

your gonna want in the 21mm around 76 to start with...with a std airbox

and somewhere around 86 with open filter!!

 

Yeh that was in my 17.5mm carb

Ok cheers dave im going to be using my open filter if it still fits if it doesnt ill have to get a bigger one

 

ive just thought....is your bike air cooled or L.C....ive never had a typh before :emb:

Air cooled uses a bit bigger main jet than liquid cololed!!!

 

air cooled

 

in that case add 2 0r 3 sizes up on those sizes i gave...

but experimentation and plug chops are the key....no 2 bikes the same and all that

 

alright cheers dave

well im ordering:

polini corsa manifold 17-21mm carbs (because my manifolds split)
21mm dellorto carb
and bgm jet box 75 -> 98 (is this jet box good sizes for the setup)

 

yep there should be a jet in there somewhere that suits

 

So for any 70 cylinder and sports exhaust, you're looking at around .76 with a 21mm (20.5) with a standard airbox?
(LC)

 

yeah a 76 should do you with std airbox and a 20.5mm Aaron

 

Can I just ask, when you were changing to your 21mm, how did you know where to start with jetting? Carbs confuse me, why is the jet smaller in the bigger carb? Like for a 12mm carb for that set-up, your jet would be in the .80's!? :wtf:

 

I knew what jet to start with because minor told me

And jetting depends on a few things not just carb size...but needle profile...air correction jets...etc etc.!!

And i didnt go as high as 80+ when i used a 12mm on my 70 set up...it ran fine with a nice brown plug with a 75 jet!!

most people over estimate how big a jet to put in....they use the size of jet as a status symbol...Main jet mania they call it in the car tuneing world

 

what jet are you running on your 20.5 dave?

 

im running a 78...

 

Right I see.. You see, where I live, backstreet garages would never bother up-jetting when big bores or pipes are fitted.. And tbh, you don't hear of much engine siezing. Cant get my head around carbs at all.. arc:

Well Dave im gonna probably keep the Runner so I'm definitely going 70cc and fitting the 21mm.. soon!

I'm going to work around the .76 mark (thanks), how many turns out is your air/fuel screw?