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Hello!
Can you tell me is there any sense to get 13/13 carb and malossi air filter on original-standard cylinder with ECO concave piston and original carter without modifying intake inlet.
There is a sense if you want more sound and higher fuel consumption 🙂
It will run nice but do not expect a lot more power!
So, as I can see I went tottaly wrong with my setup. If I can get 41 or 43 cylinder kit which brand do you reccomend me to buy. Is it neccesary if I mount 41-43 cylinder to cut the crankase and modify carb intake on the carter or I can leave all standard like it is now. Does original cylinder head fits on 41-43 cylinder kit.
For a 13mm carb you need to drill your inlet 18mm with an 13mm drill,
An olympia 43mm (old dr43 model) doesn’t has the booster ports like the dr,
But both cylinders can be mounted without tuning your crankcases,
But for the best performance its recommended to overhaul them,
A stock engine with and 43mm doesn’t go that much faster,
But has more torque,
When you tune the engine the torque and rpm increases almost by double.Thanks for your answer
. So obviusly I must drill the carb intake on the original carter from outer and inner side. Is DR EVO 43 cylinderkit a good choice then. What about the original cylinder head. Does it fits without any modification on DR EVO 43 and without head gasket or the head gasket for 43 is recommended.In Holland some of the late Ciao models have a different carter on which you can not fit another cylinder. This was also the carter that had the eco piston. I have no idea if the same carters are found in Slovenia, but if so you cant fit a 43mm on it.
I suppose it will not be a problem, if you find complete DR EVO 43 kit you also nead a 43. head gasket.
Take your time to find out how to drill the carter, if you drill the hole too wide you carter will not run as the air will leak past the crankshaft.
You do not have to drill out you inlet.
I think its a risky thing to do and sometimes the inlet will crack.
I used a file to open up the inlet and inlet window. That way you can deside how far you want to go.Also, putting a 43mm cilinder on a stock carter is very noticable. Way more torque and a higher top speed are very noticable.
My DR Evo 43mm on a stock carter with 13mm carb (no modification on inlet) got me from ~50 to ~60/65 km/h.For cilinder brands i would say Polini, DR, Alfaerre (if you can find one)
They are fairly fast out of the box (DR evo taking the lead) and do not wear quick.You van use a 38.2mm head on 41mm cilinders and even on 43mm (but not recommended) though if you use a 38mm head, always use the gasket that matches your cilinder. This way you do not loose gasket in your cilinderhead
Wilk1985 :
In Holland some of the late Ciao models have a different carter on which you can not fit another cylinder. This was also the carter that had the eco piston. I have no idea if the same carters are found in Slovenia, but if so you cant fit a 43mm on it.I suppose it will not be a problem, if you find complete DR EVO 43 kit you also nead a 43. head gasket.
Take your time to find out how to drill the carter, if you drill the hole too wide you carter will not run as the air will leak past the crankshaft.
I have a concave ECO piston on my CIAO. Please help me how can I find out which carter I have (maybe some factory numbers on it). As you say if it is an ECO carter what can I do then, put 38,4 or 41mm …?? Maybe some solutions.
What can I do then with my new 13/13 and Fire exhaust.Complete DR EVO 43 kit means ( cylinder, piston, piston pin and rings, circlips and base gasket)am I right.
About the opening- drilling the carb inlet on the carter I find on this forum some great How to’s or I can use assembling instructions for kit from Polini and Malossi.
You can pull your cylinder out of the carter and measure the outer diameter of the part that goes into the carter.
Normal cylinders are 47mm outer diameter if i’m right.If you have the different carter, try if youcan find one of THESE thing in 50mm diameter. than split the carter, pull the crankshaft out, assemble carter without crank, the sandpaper scroll in a drill and that way you can widen your carter to fit a normal cylinder
SuperSi thank’s for your answer.
,.So if I have a cylinder with 47 mm outer diameter of the part that goes into the carter then is OK with my carter if it is smaller then I have to widen my carter.In your previus post you mentioned about using a file to open up the inlet and inlet window. I suppose that I must get an fi 13 mm round file. But how can I do the right inlet depth (lenght)18 mm from outside of the carter with the file.
you have to drill the inlet manifold
take a 13 mm drill and some tape
measure 18 mm on te drill (from the top ofc)
tape it and drill until you reach the tape
the inlet windows should be wide enoug
if your crank cases are seperated you will see
look on google for ” ciao belgische inlaat”
if your window is that size you dont have file it,you can use a stock cilinder head
but a 43mm is flattend so the compression is higher
a stock one can be flattend by using a perfectly flat plate
some fine sanding paper taped to the plate
and some patience to evenly sand the head
can also be done on a 50ccyou can also use an dr50cc its faster then a stock one for sure
the only bad side are the booster port they are blind port
wich means there aren’t any booster ports in the base just in the cilinder
but you can drill them using a 5mm drill
and adding the ports to your crank casesdid you had trouble mounting the exhaust?
most eco cilinders are exhaust port size 23,5mm
(im not completly sure, mine was )
do you also have the eco head ?
maybe its mounted on to it but not stockfreddy k Thank’s for your comprehensive answers:)
When I reasemble my engine block( carter)then I will see if it hapens to have an Belgische inlat. Is there any other way to determine belgische inlat without reasembling the carter??
Until now I have not had any diffilcuties mounting the exhaust. The last one I’have mounted is gianelli fire with 22mm.
ECO head – how to know the ECO head ?
rubymax :
freddy k Thank’s for your comprehensive answers:)When I reasemble my engine block( carter)then I will see if it hapens to have an Belgische inlat. Is there any other way to determine belgische inlat without reasembling the carter??
Until now I have not had any diffilcuties mounting the exhaust. The last one I’have mounted is gianelli fire with 22mm.
ECO head – how to know the ECO head ?
They are just a bit diffrent diffrent to an “normal”
Most belgian inlets have a stock 12mm inlet (last models also)
But without dissasembling the engine you can’t really tell,
http://www.vespa-ciao.nl/forums.php?m=posts&q=10035
This is the how to for the inlet conversion,this is for the canals (for the dr43cilinder)
PHOTOFreddy kSo when I will reasemble my engine I will get more information about my previous questions.
If it happens that I have so called belgian inlet (12 mm) do you think that this is sufficient for 13/13 and malossi airfilter and no need to widening the inlet and window inside the carter.
If you have a belgian inlet, it wouldn’t make a big diffrence.
But just make sure to tune your carters to the cilinder (dr43),
Otherwise it will not perform the way its made for.
With tuned carters and a decent transmission its a beast.
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