Production and pressing of the valve guide into the cylinder head. Material of the new valve guide - AMPCO 18 . . . for more interesting videos click ,, HERE " / @paulxchannel
Head should be heated to 300 degrees F to reduce galling and make extraction /installation easier and not break guides but no hotter cuz seats may come loose/fall out. Lube new guides on assembly. More to it than that tho.
Now that's a job well done 🙌 That new guide is certainly "Stronger" !!! I started this video thinking "No way!!" And I finished this video thinking "Well that was easy... Why didn't I think of that??"
Really great work !! I own a machine shop similar to yours doing the same sort of work, the next thing you need to build or buy is a blast cabinet. working with a clean head is a must and will make a huge difference to your end product
This is beast!! I will definitely show this to my boss. He owns a machine shop down here in Montgomery County Maryland. I think he's done this before or at least the other co-worker of mine have done this. This is great for me because I've been wanting to make my own valve guide for my subaru but didn't want to buy brass stopper valve guides due to they wear out faster than steel.
Pleasure is awaiting me in Poland , restoration of vintage motorcycle FN 350 SV from 1927 , so Yours recordings are good inspiration Pleasure to watch REGARDS from Canada Zbigniew najlepszego zycze
One of our specialties at flanigan's machine shop was making valve guides remachining guide holes put in new valve seats with the added other valve work, shave old brass boat prop shafts to make new valve guides win win situation aluminum welding of cylinder heads PS always heat up aluminum cylinder heads before removing guides critical step
I give you credit for ambition and I've made my own guides for various projects but the Yamaha guides are cheap to buy. Warm the head with a plumber's torch and you can drive them in easily with an aluminum drift. Only. 001 interference
This incredibly detailed work and while I would never take away from it, I sincerely hope this was educational more so than anything. There is no way anyone would pay for this at that scale of detail instead of buy a new head. Unless you work for free. I hope not, considering your skill set.
I prefer to drill and ream first. Then machine guide outer diameter between centers. That assures run out between bore and outside diameter to a minimum
Great video, thanks for sharing. One question, at 5.05 when the reamer comes out you can see a little spring back. Is the alignment of the tailstock ok?
Great video! I build mx engines from home and just purchased a tormach 1100m vertical cnc mill. What cutters are you using to do the radial cuts on the valve seats? Thanks!
Здравствуйте. Как получилось у вас добиться плавающего эффекта шпинделя? У меня манжета жмет сверху а когда переключаю воздух снизу такого эффекта нет. Поделитесь плииииз.
@@PaulXchannel Oh okay, thanks. I love your work. I wish the people that does that type of work in here were like you. Everything you do looks professional and very well done. Thanks for sharing
Several errors, the head should be warmed up to 200 degrees to expand the hole, dont use bronze when the rest is cast iron, you can't get an acurate OD from a cracked guide, dont replace the depth setter ring they come off, warm the head up when fitting the guide to prevent galling, once fitted ream the guide to the correct clearance, you will need to recut the seat so it is concentric with the guide, then lap it in, now skim the head.
Thanks. From the manufacturer: AMPCO® 18 is ideally suited where high strength and hardness combined with wear and fatigue resistance are required. Some of the more common applications of this alloy are bushings, bearings, gears, worm wheels, valve seats and guides, hydraulic valve parts, pump rods, guide pin bushings, gibs and slides, etc.
@@PaulXchannel the American Kibblewhite company has a whole set of 5 for 70 S=US Dollars just seemed like a a lot of work to make the one. love your videos very well done and informative.
@@PaulXchannel make this question because i broght a honda k20 motor and they have a broked esxhaust guide. The motor have good compression and timing is ok. I thing they work with very hot EGTs and high rpm couses that. Tanks
Here is what a race mechanic told me can cause this. High rpm and speed coming into a corner. Throttle chop (rapid closing of throttle) combined with braking with clutch fully engaged (lever out) can cause severe backlash on the timing chain opposite the chain tensioner. If the tensioner teeth are worn the tensioner can move out giving the timing chain extra slack. This can cause the timing chain to skip resulting in valve to piston interference. They sell an aftermarket performance timing chain tensioner that is not self adjusting. I do not recommend this part unless you are racing and/or very meticulous about maintenance. Replace the timing chain tensioner with a new one from Yamaha.
