Honda CB400 Four - Top End Trouble (Part-2)
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- เผยแพร่เมื่อ 11 ก.ค. 2024
- Part two of a three part series of videos showing a top end refresh on the iconic Honda CB400F (Four).
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00:00 Introduction
00:50 Cylinder Head
01:51 Cam Followers
02:07 Cam Shaft
03:03 Cylinders and Pistons
05:30 Parts
11:04 Piston-To-Wall Clearance
24:45 Valve Lapping
29:21 Valve Spring Testing - ยานยนต์และพาหนะ
I can't wait for the worlds leading expert in Automotive & engineering to pick this video apart 😂 come on Mat and your dirty garage 😂
Matt’s a knob head
I'm sure he's wise enough to pick his battles wisely 😉
😂
Nice clean job Jim.
Did you have the cam lobes built up? The cam looks great but does it now have less lift if it wasn't built up?
I used to have a 400/4 when I was 17, that little bike got caned everywhere but never complained.
thanks for compiling this series of videos.
That valve grinding took me back to the seventies when myself and brother used fanny around with Ford engines.
Excellent videos something to look forward to on a Friday 😊
Stop beating yourself up on the narrative, it’s a really good talk through when time is money- and oh so clear walk through. I love the handed down experience you are sharing here , and like the best engineers, still always learning but knowing what is acceptable and what to look out for. So , as a previous 4/f1 owner, I gotta say loving this workshop hands on resto, no gimmicks, no naff music , loadsa knowledge. 👍👍. Best luck with the channel, subscribed ..
Just found your channel Jim and really enjoying the “waffelage”. Just for info, infrared temperature measurements are notoriously difficult to do on shiny metal surfaces, especially aluminium, and it’s not really possible to get an accurate reading without employing some additional measures. This is because the measurement relies on understanding the emissivity of the material being measured and also the wavelength of the IR camera being used, typically 8-14 microns for general use. The upshot is that shiny metal targets will appear much cooler than they actually are unless you use emissivity paint or tape on the target to take your reading on (Tippex also works or insulation tape). When using these measures, the camera emissivity setting should be set to around 0.95 to give you a more realistic reading. Just off to check out your GSX 750 rebuild!
Great content,I really love your videos, nice waffling about all technical stuff, cleaning things, getting all to function correctly.. really nice
Keep up the informative waffle, I love it!
Meticulous work and very informative - inspiration to get out in the garage👍
Interesting the difference in valve spring compressed return force even though they are both in the same length tolerance. Good vids Jim, thankyou for posting
Excellent video Jim🤜🤜
Great demonstration about old valve springs losing strength with use and time 👍🏻
You surprised me with the camshaft Jim, when you first mentioned wear I immediately thought of Kent Cams and having them re profiled, about the only option for ’unobtanium’ such as these and the fact that buying second hand is often just buying someone else’s problem
Good advice on the difference that temperature makes to measurement .
Looking forward to the road test
Excellent videos, loving the depth of info. Love it when you waffle too 😂. Keep up the videos. Very informative
I sub'ed as soon as your brain melted and you coulden't speak. Thanks for the laugh
Great work Jim! I used to scream around the place on one of these back in then’70s. Mine was red and I don’t know how I didn’t kill myself! I went on to buy a CX500 brand new because I loved the Guzzis,but I couldn’t quite afford one. ( not that anyone is interested- I know)🥹🙄
I was watching to learn about the oil seal ring under the valve guides. No one seems to mention this online.
good one
Wow that’s clean. ❤
5 minutes in and all is new!
You speak good England
I got two old bikes rotting outside that I never use because i can't find any mechanics that could give them the love they need. Seems impossible to find someone like this around here :(
Thanks for the information, learned a lot again. The 180 grid seems to be a very rough finish. For example Subi Performance uses a much more smooth finish? Can you explain the difference?
Everyday is a school day
Hi Jim
What is the make of the digital bore gauge you are using, like you I have been using a dial bore gauge and as I have got older, shaky hands and failing eye sight its hard work to get an accurate measurement!
Great content by the way, its a refreshing change to get a wort's and all content.
You posted a video on a CB550 rebuild which smoked after the event, turned out to be a piss fitting valve guide insert, I have had this a few times, had them drop when the engine is running and makes a right fuck pot of the engine!
Thanks for the comment 👍 The guage is a "Moore & Wright" one. Sorry, but I don't know the model number, and I can't be arsed to go in the workshop to find out. If I remember tomorrow, I'll let you know 👍
What colour is the cerakote on the casings? Looks fantastic 👌
Shimmer Aluminium H-158
That's waffling Jim,but not how we know it.
Brilliant!
Eh um eh um you’d give a asprin a headache
Boring as shit😂😂
Glad you liked it 😂