These are absolutely amazing posts. Many thanks! I wish we had stuff like this being posted here in Europe
Valves cut, guides removed, and new guides before install. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Bare head before machining. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Are those OEM steel guides? I prefer the positive stop feature as can been seen on the original bronze... I'm sure the only reason the manufacture removed that feature was for easier grinding (well, small OD starting stock too)
Yeah factory guides. I wish they had a step on them also to set the height. The factory installation tool sets the height on the newer style guides. No idea I'm sure it was to save money can't think of any other reason.
Can you post a photo of the factory tool, Dan? The savings in material is moot - especially if these are sintered steel (I believe they are). But, grinding an OD with no shoulder features is much easier (and less expensive)
Pressing Hill engineering bearings into the front cover. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Heads bolted down. Sorry skipped a few photos I was on vacation during this time. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Installing front cover and oil pan. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Factory tool. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
I'm guessing Pap is referring to protecting them from dings, etc. Even though they are hard, it's always a good idea to prevent part to part (steel on steel) contact
Sintering a shoulder just isn't necessary as sintered steel will not deform and compress like a bronze valve guide does upon installing, the sintered metal is just that much harder. The sintered guides are tough to install by comparison so once they're in, they're in. The shoulder would be nice but it's not really necessary and if anything they're a liability as sintered metal is more porous which may lead to the shoulder cracking.
I remember from an older thread by Braden that you guys weld some part of the engine during a major. Could you refresh my memory on what that's all about ?
Agreed and great point. I think a shoulder would just help a standard machine shop do valve guide replacements without the factory tool. Not really worried about dropping the guide though as you stated its a tight fit.