Try to avoid spinning the bearings when they are dry. After installation, let them cool and then put a little oil on them
@KIM32rus10 ай бұрын
Hello! I want to ask how the large holes in the cooling fins work. I often see such tuning, but no one can explain the very principle of their work. If you make a grid of holes with a diameter equal to the thickness of the fin, then this increases the cooling area, and how are holes of such a large diameter useful?
@stimpetta10 ай бұрын
I think it's simply to save weight.
@radulungu8955 Жыл бұрын
Nice work🎉
@ajolfamoj136 Жыл бұрын
YZ250 MY1983 Conrod.
@user-ll1hl5wb2o Жыл бұрын
Мне нужен такои двигатель
@user-kz4pe5nd1f Жыл бұрын
💕💕💞💞🌷🌷💐💐🙋♂️🙋♂️💖💖💝💝🌺🌺👏👏👏👏👏🌹🌹🌹🌹💞🤝🤝🤝🌷🌷
@minhucha64972 жыл бұрын
how did you do it can you share with me , thank you
@nelumanolache3812 жыл бұрын
MULȚUMESC FRUMOS PENTRU PREȚIOASELE LIVVE ❤👍
@derekbond35122 жыл бұрын
We can learn so much from the older tuners, most know what they're doing, i could listen to this man for hours, great stuff my friend.
@derifamatze85992 жыл бұрын
what kind of ball bearings have you installed ? Greatings from Germany
@vince435612 жыл бұрын
Yep...wich conrod, please ?
@denespal-kiss74863 жыл бұрын
What type of piston is this?
@stimpetta3 жыл бұрын
It is a piston for a Suzuki TS 250. some people use Wossner or Wiseco pistons for this bike.
Como puedo conseguir repuestos de mz etz 250 saludos
@wiesawwienio65498 ай бұрын
Wiesław 5:21
@barnbersonol3 жыл бұрын
Tyre levers!
@dvddale1113 жыл бұрын
Is the nearside crank oil seal in back to front here? Spring or inner side should face any oil. Other side with generator should look like this side though, as no oil there.
@barnbersonol3 жыл бұрын
What the F you split the motor to get the seals out?!
@stimpetta3 жыл бұрын
Not necessary. But this video is part of a series where we totally strip down and rebuild an mz racing engine.
@meckanicall4 жыл бұрын
A couple of points....Heating the right case up to spitting hot rather than the recommended 100 C will fry the Wellseal on contact...not good. Also it is easier to fit the the right case THEN the oil guide disc which can now be easily located in the correct position, then fit the bearing circlip... then and finally the oil seal which can be positioned on the shaft more carefully...
@stimpetta4 жыл бұрын
Thanks for the extra tips. I can see how putting the circlip and seal would be easier after the cases are joined.
@majster_kesz4 жыл бұрын
Good job ☺
@ahmedamzd87054 жыл бұрын
Very beautiful
@user-xq7bj2kt1g4 жыл бұрын
I want to make my mz etz 250 bike as race bike, how can i do that please explain to me?!
@stimpetta4 жыл бұрын
Take a look at the Tuning Guide on the Technical Info page of the BMZRC website. bmzrc.net/help-info/technical-info/
@user-xq7bj2kt1g4 жыл бұрын
@@stimpetta thank u very much i will see this guide and understand the tunning
@11thr974 жыл бұрын
thx
@TheMitchellmitchell4 жыл бұрын
Wellseal to one side of the case only?
@stimpetta4 жыл бұрын
yes
@dachelcandelario47384 жыл бұрын
A k altura va la tapa cuando un MZ está con un pistón a 76 mm saludos nesecito videos como estos .
@87vigi4 жыл бұрын
Please help with my ETZ 250 - 5 gears. I often feel resistance on the lever when I try to shift into third gear. Second gear is still engaged. However, when I reduce from fourth gear to third gear, everything works. I dismantled the engine and everything seems fine.
@stimpetta4 жыл бұрын
Try asking at the "mzriders" facebook group
@yasermerino1enterprenur4 жыл бұрын
Where can I buy a speed box like this?
@yasermerino1enterprenur4 жыл бұрын
Where can I buy a speed box like this?
@yasermerino1enterprenur4 жыл бұрын
I need to buy a cylinder with a piston and a cover of these live race in the United States as I can buy.
@T120Mitch4 жыл бұрын
Do you have any info or videos on clutch lightening please.
@user-pb6nt9uz3i4 жыл бұрын
💖💖💖💖💖💖💖💖💖💖💖💖💖💖💖💖💖🌺🌺🌺🌺🌺🌺🌺🌺🌺🌺🌺🌺🌺🌺🌺👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍
@alisahib96004 жыл бұрын
عقيل العبيدي مبين أنته قافل عالقضيه
@osiel82704 жыл бұрын
Por favor para los videos subtítulos para los de habla hispana 🙏🏻🙏🏻
@vrossi25964 жыл бұрын
I'd love to give this a go 😁
@impact02835 жыл бұрын
make more vids on that mz engine :D
@_vlnt_78005 жыл бұрын
How much power it does? Any dyno figures?
@stimpetta5 жыл бұрын
This engine produces 26bhp. Others with this level of tune can make around 28bhp. With gearing I run it has a top speed of around 105mph
@_vlnt_78005 жыл бұрын
Nice! What carburator it uses?
@stimpetta5 жыл бұрын
Carbs are restricted by our club rules to Bored out original BVF carbs or Mikuni 32 VM or 34 VM. This is to conform with the club technical regulations bmzrc.net/wp-content/uploads/2017/02/BMZRC-Technical-Regulations-2017-1.pdf
@Apollon213 жыл бұрын
@@stimpetta Kmh, nicht Meilen.
@CONEHEADDK2 жыл бұрын
I once found a fantastic site on this subject online, where the claim was up to around 45 hp. No reason it's not still to be found.
@Oldmz5 жыл бұрын
What piston is this?Where can I find it?
@stimpetta5 жыл бұрын
This piston is from Tony Holmshaw. Other suppliers are Wiesco and Wossner (Suzuki TS 250 piston)
@stimpetta5 жыл бұрын
Piston are either custom made forged items or Suzuki TS 250 forged pistons made by Wiesco or Wossner
@BikingChap5 жыл бұрын
Are folk still rebuilding these engines? I have a road going ETZ and the engine needs a complete rebuild. I have a go myself but understand you have to get the clutch tightened particular well else it’ll spin on the crank and bugger it up. Any contacts much appreciated!
@stimpetta5 жыл бұрын
@@BikingChap Yes, you have to torque up the clutch bolt. Here's the workshop manual if you fancy giving it a go yourself mzriders.files.wordpress.com/2017/04/mzmanual.pdf In the UK there are quite a few places to go. Depends where you are.
@ralfsiegel75945 жыл бұрын
The gearbox would be go easier into the engine if warm up the engine to 100 °C with a heating plate . It is also discribed in the users Manual Workshop. If you had warm it up, you didn´t need a hammer
@yasermerino1enterprenur4 жыл бұрын
Where can I buy a speed box like this?
@michaelshannon29773 жыл бұрын
Will the gear box can it be used for 4 and 5 speed gear box
@sonnycrockett75883 жыл бұрын
This bike will never start again !! ✌
@michaelshannon29773 жыл бұрын
The question was will the gear box stand be ok to use for 4 and 5 speed gear boxe
@stimpetta3 жыл бұрын
@@michaelshannon2977 this is a 5 speed gearbox.
@custardslastcake1236 жыл бұрын
just found your fantastic video series please keep them comeing