Fitting cylinders and heads to the Monster 659 engine
Next step of the engine assembly series - fitting the cylinders and heads. Showing the vertical only as the video is long enough as is and it's all the same stuff in a new location.
I fit pistons and cylinders as an assembly. Some will fit the piston to the rod, then fit the cylinder over the piston. If the rings are an easy fit into the cylinder and you have an appropriate tool, that's fine. It's just a way of doing it that annoys me. But each to their own.
The fitting of the piston pin circlip is a particular low point for me - sometimes, when there's a camera to work around and filming, stuff just doesn't go according to plan. Never had one give me this much agro.
I saw a link somewhere to a Mahle video all about fitting circlips with some interesting tools for the job. Worth searching for if you need some confirmation you're doing it badly.
Website: www.bikeboy.org/
Facebook: / bradthebikeboy
Blog: bradthebikeboy.blogspot.com/
Instagram: / bradthebikeboy
If you wish to ask a question about this video, please start with specific info about what you're asking. Model and year at the very least. If you make me guess, I'll not bother.
I do Ducati only, so no point asking a Honda question.
Please don't ask irrelevant questions if you want a response. If you have a tech question on a different topic, email me.
Пікірлер: 7
Haha. I'm glad I'm not the only one struggling with the circlips...Great video.
Fitting the head and removing it to check piston orientation (altough 100 % sure it is all good) is exactly like most of us does😊
Really enjoying these reassembly videos - thanks.
Just FAB , methodical and meticulous . Thanks Brad, oddly just re visiting your ST4s Video to do 'Big Red' and this pops up. Lov'in that engine stand!- EDIT - Just finished watching. Don't throw OLD O' Rings away Brad ( a old jar marked OLD ) have many uses. You could have used some ON the studs to hold UP the base gasket. Just remember to cut them off after installing the gudgeon pin clips , electronic flush 'side cutters' work well,
@bradthebikeboy
Ай бұрын
i've taken a couple of clothes pegs to work to try - i reckon they'll be a goer.
👍👍👍👍👍
22:23 - ehh, you should not be putting sealant on the o-ring there brad. o-rings are a dynamic seal that need to move ever so slightly squishing up against the low pressure side. This is so called "energising" the o-ring. If you stick it in place with sealant, yeah it will 99.9% of the time be fine, but then the o-ring isn't working properly as by design. In fact you should be oiling or greasing the o-ring to better allow such movement! ETA: I'm probly not allowed to post a non-youtube link so grabbing some text instead: _"O-rings seal by mechanical deformation that creates a barrier to a fluid’s potential leak path between two closely mated surfaces. O-rings are typically installed in a groove that’s machined or moulded in one of the surfaces to be sealed. Their rubber-like properties let the devices compensate for dimensional variations in the mating parts._ _When properly sized, the clearance between the surfaces is less the OD of the O-ring. Thus, as the two surfaces contact, forming a gland, they compress the O-ring, which deforms the round cross section. This diametrically squeezes the seal, and the resulting force ensures surface contact with the inner and outer walls of the gland_ _With little or no pressure, the natural resiliency of the elastomer compound provides the seal and keeps fluid from passing by_ _Applying fluid pressure pushes the O-ring against the groove wall on the low-pressure side, increasing the sealing force. Interference between the seal and mating surfaces lets the O-ring continue to operate leak-free. At higher pressures, the O-ring deforms to a somewhat “D” shape, and contact area between elastomer and gland surfaces may double from initial zero-pressure conditions. Due to the elastomer’s resiliency, releasing pressure lets the O-ring return its original shape, ready for the next pressure cycle. It also lets properly designed O-rings seal in both directions"_ And: _"Lubrication of O-rings is essential for the proper function and full-service life of the seal, but also to ensure the machine, motor, engine, or device in which it is placed does not malfunction from a blown seal. A grease or oil application at assembly helps to protect the O-ring from damage during use"_ But don't worry too much, Millyard makes the same mistake too 😆