BROKEN CRANKSHAFT!! - Piaggio Zip SP Bottom End Rebuild

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BROKEN CRANK! - Piaggio Zip SP Bottom End Rebuild
In this video you will see a bottom end rebuild on my Piaggio Zip.
The stock crankshaft could not handle the power of the #Stage6 Streetrace cylinder any more. It lasted about 1.5 years, pretty much good.
It was time to get a better crankshaft, also for future better cylinders.
It is a #Doppler Endurance HPC crankshaft. Also new #Polini bearings.
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Опубликовано:

24 июн 2019

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Комментарии : 84

@dexietyy7922 Год назад

I did mine with hammer and sockets no special tools was a much easier job than I thought it was going to be crank is perfectly smooth and silent now

@construyeconmigo5461 3 года назад

Buen trabajo👍👈

@George-fo5yg Год назад

I also had a hard time rolling, I thought it was a check I'm not doing well, I heated the crankcase, the bearings were cold, I'm going to install the packaging, only I have to make another thread

@Veniessubdentem 3 года назад

I could smell the gasoline and oil from the screen. Great video!

@Daanteloo 4 года назад

nice!

@c.c.8841 4 года назад

just about to do the same job on my liberty, did you put the oil seals in before the bearings ? or can you put them in later. also you can use a bolt with a socket on either side to pull the bearings in to place.

@binostuning 4 года назад

I prefer to put the oil seals after installing the crankshaft and close/seal the crankcase. Remember to put little grease on the seals to slide easier.

@frankrommerts5358 3 года назад

In 17 years I have never seen a stock crankshaft fail on a Piaggio 50cc with a low revving 70cc.

@binostuning 3 года назад

There is always first time for everything

@nickritter1992 2 года назад

@@binostuning how many rpms were you turning ? I'm installing one on my Zuma and plan on doing a max of 11k. I'm also installing a s6 sport pro mk2 on my other Zuma 50 as well with a yasuni r with a stock low mile crank and plan to keep it at 11k too.

@binostuning 2 года назад

@@nickritter1992 I'm running around 10.5k rpm. It's dangerous to run a stock crank with sport pro.

@dexietyy7922 2 года назад

My crank bearings are failing but I’m just gonna ride it till it blows up

@revordie1758 4 года назад

Nice one bro!

@ThepinguinMates 3 года назад

When do you gonna explain how you did it with the water pump

@MrBerenguer67 2 года назад

Hi thks four your excellent video I have a Piaggio Zip 2T every time when I start the scooter I need to warm up first before I drive is normal thank

@binostuning 2 года назад

Yes always is good to give it a warm up

@arthurm.5952 4 года назад

That crank is probably gone. You have to check it for runout. Never hit the crank with the hammer or the cases trying to join them.

@arcticblack3764 3 года назад

You can't just bang your crankshaft with a hammer because you will throw it out of balance. There are two speciality tools called the crankshaft puller and crankshaft pusher for safely splitting the engine case halves, installing the crankshaft, removing the crankshaft and centering it if needed. Also If you buy aftermarket bolts they have to be 10.8 hardness and before installing the crankshaft oil seals apply some oil because you don't want to run them dry. The reason why your bearing did not go in smoothly was because you did not heat up the engine cases enough and the bearing had to be cold and same thing goes to joining the case halves together. Also every time you remove tour cylinder or piston you should replace your small end bearing and the spark plug. Hope this helps!

@1sevzb475 4 года назад

You need to get yourself a heat temperature sensor gun so you can tell what temperature ur heating the case to, also put a nut on the crank then use the rubber dead blow hammer to tap the crank in, metal to metal tapping on the crank is bad, all in all at least your about this life 👍

@binostuning 4 года назад

I need to get a heat gun first. And the tapping is not metal to metal. My hammer is plastic and I'm hitting a wrench extension not the crankshaft.

@1sevzb475 4 года назад

Thats what i mean tho, the extention is metal and contacting the crank, the point of a rubber mallet/deadblow hammer is you can tap the crankshaft directly (no metal extention), the metal extention can flatten the tip of the crank or damage the thread, im not trying to say it dosent work the way your doing it but see your going at it hard so thought id chuck you some info you could use.

@binostuning 4 года назад

@@1sevzb475 OK I understand what you mean. I have used the extension just to "extend" the crankshaft. I think it doesn't really make any damage because I don't hit the extension to the shaft (metal to metal). But anyway thanks for the tip.

@R_T_Remko 3 года назад

What did you use to holf the little tube on cilinder because mine is leaking..

@binostuning 3 года назад

Which tube ? At the top which the coolant passes?

@JaysScript 4 года назад

On the variator side I have bashed the bearing incorrectly, any good ways of getting it back out? Thanks

@binostuning 4 года назад

I think the opposite way that you bashed in ?!

@JaysScript 4 года назад

Binos_Tuning Not supposed to bash the inside ring of the bearing but I might have to in this case.

@binostuning 4 года назад

@@JaysScript yep.. unless you have a special bearing puller

@ZoltanTheil 4 года назад

At 00:38, how did you lift the box from the engine? What needs to be done to do that?

@binostuning 4 года назад

You have to disassemble all the cables and wires, the rear shock bolt, the main engine bolt that attaches to the frame, water pump hoses and the rear brake cable.

@JaysScript 4 года назад

So the stator connections, choke cable, brake cable, main mount nut and rear shock for an air cooled piaggio zip?

@marketinsights_ Год назад

how long did this last? did it break anytime soon?

@binostuning Год назад

nop. it's still making a ton of power

@cedriclegros6044 4 года назад

!!!! On ne frappe jamais sur un vilebrequin !!! On chauffe bien les carters , ensuite on met le roulement qui doit rentrer seul, le carter chauffe le roulement ensuite et le vilebrequin rentre assez facilement sans frapper. A mon avis le carter n'était pas assez chaud. Dernièrement on ferme le carter, on fait un pré serrage des visses et on frappe légèrement sur les visses,ça libère le vilo et ensuite serrage final. Sinon le reste c'est pas trop mal, dommage qu'on a pas vu le montage des spis.

@nemzdroidx 3 года назад

How many lbs of torque for the crankcase bolts?

@binostuning 3 года назад

12Nm

@tinenovak1412 3 года назад

Can you posta link of the tool for porting? I would really like to have it. tnx Also nice vid:)

@binostuning 3 года назад

Search on eBay for porting tools.

@Acolytes_ 2 года назад

hello sir

@RC-sn5oi 3 года назад

What’s the songs called ?

@jacob5106 3 года назад

How long did it take you to build

@binostuning 3 года назад

if i have all the parts, i can do it in one day, but it's better not to hurry in such a repair.

@killuminatii1 4 года назад

1:27 how did that come off so easy man? Mine is only a little bit loose but it won't come off...

@binostuning 4 года назад

I had to press the one side of the crankshaft so the case opens. Then with knocking comes off.

@filipstevkov2829 3 года назад

How much to tighten at the head and in the middle at ignition

@binostuning 3 года назад

11Nm head and 15Nm fly wheel nut

@dexietyy7922 Год назад

Mine completely snapped in half today I’m absolutely gutted 😞

@binostuning Год назад

It's time to upgrade it

@dexietyy7922 Год назад

@@binostuning got a genuine piaggio one for it, I’m keeping it as a 50 so not much point in buying a performance one

@mikaelpalohuhta6633 4 года назад

What torque spring you have?

@binostuning 4 года назад

The black stock one

@GaspersStuff Год назад

Anyone knows the squish for original (50cc) cylinder??? Piaggio zip sp mk1

@binostuning Год назад

I can guess around 1.0mm ?

@bikelife2169 2 года назад

Is malossi crankshaft good to?

@binostuning 2 года назад

I have not any experience with mallossi crankshaft.

@kainehuijer9241 2 года назад

U forgot your water pump?

@josepeixoto3715 3 года назад

to shut the musak, hit the M key (mute) !!!

@Acolytes_ 4 года назад

Why are you pounding on the crankshaft broooooo :( wawww loll

@arrepuess 3 года назад

I was a total newbee, and banged on my hpc crank. Well it never ran well. Havent used it. I swapped carbs, cdi, coil, etc and took it to other pro builders and they couldn’t find the problem on why it ran horrible on low end acceleration. Well after some time ive come to the conclusion i may have bent the crank. Hence creating a wobble, and possibly air leak while it spins! I plan to open it up. So im hear finding ways on puting it back together without hammering on the crank 😏

@aristobashari7044 3 года назад

@@arrepuess put the crank in the freezer and put the bearings in the oven for about 20 minutes then first put the bearings on the crankshaft on both sides Let it cool down heaten up the engine where the crack is going to sit in and i will just slide in place.. no need to hammer anything and the easiest way is to first put the bearings on the crackshaft✅

@arrepuess 3 года назад

@@aristobashari7044 thanks for that info. Luckily i got it running great. I had other inconspicuous problems

@StruukenDuukers 3 года назад

@@arrepuess what was the problem?

@arrepuess 3 года назад

@@StruukenDuukers mainly my stock intake & tuning. The fuel petcock vacuum line wasnt vaccumming, so fuel would not flow freely. The carb bore was bigger than the stock intake. It reduced inside. And all my components were larger upgrades

@lidl9196 3 года назад

Did anyone realize that he forget to put waterpump

@binostuning 3 года назад

Did you realize that he has an electric water pump?

@lidl9196 3 года назад

@@binostuning i am not really sure that u can put electric water pump on this type of cylinder😀

@edwindamaso1421 2 года назад

No engine oil?

@mattw5183 2 года назад

nope its a 2 stroke for a reason it puts oil in with the fuel automatically or you can pre-mix and put it in yourself

@emiltupitsa4966 3 года назад

buy bigger carb lmao

@attilakovacs2995 11 месяцев назад

Na így ne tegyen be senki főtengelyt

@binostuning 11 месяцев назад

That's true but I don't have any problem yet

@blind8686 3 года назад

Facepalm. There is 0% chance that crank is true after your treatment.

@binostuning 3 года назад

2nd facepalm. It works after my treatment, since 2019.

@blind8686 3 года назад

Binos Tuning the fact that it works, does not change the fact that you have knocked crank out of true. Nor does it change the fact that you should never instal it that way. Im glad that you are happy with the way it works. Cheers.

@binostuning 3 года назад

@@blind8686 I didn't say that is the correct way, but it does work since then.