Carb Conversion for Aprilia SR50 Ditech & Piaggio NRG Purejet - Explained
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- čas přidán 24. 07. 2024
- www.scooterstreet.com.au
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In this video we discuss the Malossi Carb Conversion for the Aprilia SR50 Ditech and Piaggio NRG Purejet engine, the benefits of the kit and what additional parts you will need to fit it. - Auta a dopravní prostředky
Great video really helpful will definitely order from you
Thanks Ash, appreciate the great comment🙌🙌
im doing it right now, i already bought everything - carburetor, cylinder head. revorked all the electronicas that are not needed with the carburetor, onlyi don't have it from malossi because the price is close to 400e, so far now they will drive as it is and when i get the money for this part, i will describe how it works...because now i spent 600e on parts because i bought everything new of good quality and there was no budget for this part...
Any larger carb will suit, dell or similar.
i bought a carb kit this summer for my gilera
it made a huge difference with the right jets 😀
Great work👌 Changing the jets is the way to go..
@@scooterstreetau quick question for you. Do you use gaskets on both sides of the Reed valves om the hiper2 engine. Stock there are none?
@@landmonkey22 We make the Liquid gasket.
But the consum its doubled yes?
@@nicusecan7998 is higher yes.
i have an sr 50 and i just did this conversion, do you change the whole throttle cable from grip or just change the cable that came with the kit? i tried putting the cable from splitter box to carb but was a little short. piaggio engine
Yes, only the cable to carby. Reroute if required.
Good day Guys, what sort of compression reading should a Malossi sport 70cc kit show when new? I am having some starting issues on a carb conversion Morini with a full circle crank. I recycled the cylinder and piston just replacing the rings and have a compression reading of 105psi. I can get it to run with a quick sniff of easy start but hard going off the start button.
120PSI is great but 105 although low should still start. Check the crank seals, also make sure the fuel is arriving at the cylinder. The use of easy start indicates a possibility of nit fuelling. Checks start at the tank and follow from there. It will pay to check Spark, Air and reed.
@@scooterstreetau thanks for the reply guys. I have replaced the crank and seals but now wonder if maybe I have a compression leak on one of them but if you’re saying 105 should still start. I’ll let you know. Spark is strong using a digitronic. Reeds are malossi and new. Air filter is stock with air box mod tubes. I have two different carby options 19 dellorto and 21 copy same issue from both.
Thanks for your great advice and awesome videos.
@@totallysimulated944 When a new install you must give time for carby to prime and give fuel to the cylinder. Is this happening? You should check what you have done to eliminate possible causes. Be thorough and check from crank to seal to piston and so on.
Hey! I have a question! I would lik to put stage 6 mk2 racing on aprilia ditech engine. So i would like to know is it possible. If it is, do i like buy a stage 6 mk2 kit for piaggio engines or?
Buy the exhaust that mathces the cylinder and the frame fixings can be retro fitted.
poz, did you just want to tell me how to connect the electricity, does it remain in his computer or is it installed from the carburettor version of the cdi, thanks
For these you absolutely MUST follow the instructions in the manual.
Hi.i have a aprilia ditech -02injection 70cc. do i have to buy new cyl to? or just coversion kit and carburator? br Aj sweden.
With the Ditech Morini engine, when you use the Malossi conversion unit (5512894) they recommend to use a carby (1611040 or similar) and Cylinder from Aprilia SR Replica which is again Morini/Aprilia.
Do you have the parts numbers for the sr50 ditech engine ( carb conversion kit ) thank you
www.scooterstreet.com.au/product-tag/ditech-carb-conversion-package/
could you just cap the top of the stock head after removing the injection set up? also wud i need a new ecu to keep the dash correct?
The ECU is in the kit, it is the part on the left at the start of the video👍
When the companies design and produce these products they test their designs and offer a product that will work effectively, so we trust the brands we like and therefore use what they recommend. When the parts are fitted you can be assured that the engine will work fine and with these kit it does. So capping the head may not be ideal.
@@scooterstreetau TY, I just purchased an sr50, and I've learned from the 90s that oil injection is the worst.
@@thesw313tspot8 👍what SR50? we have faith in the injection systems.. but free to decide👌👌
do i need to get the cylinder kit for the convertion on an piagio fuel injection engine ?
See the Malossi website for your specific model and all of the information is there in the product description👍
would this kit work on an american 2001 sr50 ditech ?
Yes, if it has the Ditech Morini engine.
and rough needle / jet size reccomendation when doing this swap?
Hi, Are you using the carby kits that we sell? If using the PHBG it will take W series needles and we start with W9. Jet size we will start at 92 and then work down from there..
Hey! Do i have to modify or change the ignition system too?
Follow the instructions on the new ECU system.
Do you need to change anything in the cylinder if you get the kit? If so, can i just change the head?
Yes, change the cylinder.
im still confused. Do i have to by a new cylinder when doing this conversion or can i just keep the stock one that come with the bike ?
Did you read the Malossi instructions for the ECU? It explains everything.
@@scooterstreetau Would've been faster to just answer his question.
@@tonelab77Yes true, alot faster but people want direction, otherwise you won't learn. With the Ditech conversion you need to learn as it very testing task. Do you need the same question?
does doing this converstion add any horse power to the bike
I think not but it does allow the ability to add a 70cc kit with carby tuning.
Hi Guys, how can I verify that the Coil is good on a ditech sr50. I have the digitronic conversion but have no spark.
Difficult to test these, try it on another scooter. It should test @ 5 OHMS. But testing it on another scooter is the best way. Check the stator too.
Thanks Guys, stator brown wire broken. Good spark now.
@@totallysimulated944 Great result💥💥
Seems like it would cost about $1400 AU (without exhaust) to convert it, and that's not including labor. Please correct me if I'm wrong, because I really want to do this, but not if it will be that expensive.
Yes, you need the conversion ECU kit, the cylinder and carby and an exhaust to match the cylinder.
Can I retain the stock ditech head when converting
Why are you not changing the cylinder?
@@scooterstreetau I have the malossi 70 and it did not come with a head
@@runningbear211 When you purchased the parts did they advise what kit to use? All of the information is on the Malossi website.
@@scooterstreetau no at the time I was not doing the conversion now my injection system is faulty so I'm going to carburator and wondering if it will work with ditech head
@@runningbear211Ok, the Conversion kit stipulates you must use the Malossi cylinder, 31 9541 which is used for Morini (Aprilia) LC engines. This kit comes with head. There is also advice to use the 19mm carby.
I have a 2005 Aprilia Scarabeo 50cc 2-stroke ditech, which carb kit should I buy?
Which canversion kit did you buy? Follow the recommendation of the carby on the Malossi website,
@@scooterstreetau I have not buy anything yet. I am learning the process and have no idea yet.
@@khoale1537 Ok thats cool, Check the Malossi website for the conversion kit and read up on the manual before making any purchase.
@@scooterstreetau I could not find a conversion kit for my model 2005 Aprilia Scarabeo 50cc 2-stroke ditech from the Malossi website :(
@@khoale1537 You should be able to use the same conversion system, Malossi 5512894. do all research prior to any purchase.
Which of malossi mhr rep and stage6 sport pro mk2 has better acceleration and top speed?
There's alot of variables there - but the MHR Rep would be our pick. It has excellent off the line torque, and mid range which makes it really fun around town up to 90kph zones (its also twin ring, long piston service life). The Sport Pro MKII probably has a higher maximum power figure being that its single ring, but will need significantly more work to run as well as it makes it power at a higher RPM than the MHR Rep, meaning there's more work to be done to make that power accessible for general use. Both are great cylinder kits, the price point of the Stage 6 is also excellent.
@@scooterstreetau if we say I get the mhr rep what 2 more upgrades would you recommend. (I already have a exhaust and 17,5 carb) and what top speed could I expect. And it’s a sr 50r
@@theo2522 Overange variator and Gear kit or (inner rotor ignition)..
@@scooterstreetau is there a different between sport and overange variator
@@theo2522 Yes, sure is, different dimensions plus other small changes.
Can you do a video of this kit conversion?
We do have this plan for 2023, I have acquired a Ditech. So now just need free time.
Nice, definitely waiting for this, planing to do carb conversion on mine purejet
Also would be nice to see carb conversion all oem, not on tune.
@@everythingbro4786 MMMM yes.
@@everythingbro4786 ok great..
Definitely better to go straight to the 21mm carb, completely different throttle response to the 19s
Not sure if it’s because I’m running the stage 6 sport pro but the 19 seemed to have a flat spot, maybe I just had trouble getting it setup right not 100% sure
Could be either, hard to tell. We usually recommend 21mm carb with a 70cc cylinder kit to keep the % increase closer. 50cc - 70cc is roughly 40% increase, going from 17.5mm carb to 19mm is only an 8% increase - which isn't going to do much. 21mm is far more appropriate.
Do i need a new ECU?
Watch the video we break it all down for you. You need the parts in the Video, the carby conversion kit from Malossi.
Hi . I have sym crox 50 cc euro 5. What i Can Do to have more Speed please .
Unfortunately there isn't a lot you can do to the 4 stroke scooters outside of an 80cc cylinder kit. You can try derestricting the CDI, most of the 4 strokes are restricted from factory. This will often give you a few extra kms top speed. Putting a slightly longer belt in the bike can also help, but only of the factory belt isn't reaching the very top of the variator. I would usually only recommend trying this if you're experienced with CVT transmissions.
I have a sr50 factory 2008 and its starts, and die on throttel
Check all parts, Spark, Air , Fuel, Compression,
$600 for a fuel pump😮 you get used piaggio zips/nrgs for that price here😂
Yes so expensive. This is why so many people are turning to the Carb conversion kits on the older models.
Why you do this not 😂
We don't have this Scooter🤷♂️😂