The ORGNo shonky business!
Started by HPC, 23 January 2023, 04:39 PM
Quote from: HPC on 09 February 2023, 05:53 PMI need to find a decent machine shop in the Dallas area.
Quote from: HPC on 08 February 2023, 12:03 AMExhaust valve stem ~10.92 spec 10.93-10.95Intake valve stem ~8.87 spec 8.95-8.97Not sure about the valve guide wear amount, but the play in the old guide is much more when comparing to a new guide. Even the new guide has noticeable play. Waiting for the new exhaust valves to arrive, still searching for new intake valves...Springs measure about 49.40 and 45.10mmIf I can find intake valves I can have the heads rebuilt. The big question is with this much wear on the heads, wil the block need to be rebuilt as well?
Quote from: Randys01 on 13 February 2023, 02:20 AMLooks as tho she taken some water in thru no8 and 7 cyls. Seems to be typical of these motors. There is some corrosion on the bores. no8 looks worst. If you look at the top unswept area of the bores they look fine longitudinally and at 90Deg.So really the area of some concern is the corrosion on bore 8 and how deep is it. Now you won't find this in the Rolls Royce Workshop Guide to Perfection for Brand new Motors but a bore can stand a bit of wear and a bit of marking on the walls.I can see someone has had a bit of a go with some coarse wet n dry to clean them up a bit. It's hard to tell but it looks like one of the striations has reached the depth of the corrosion. Some of this is no more than discolouration...some of it has eaten into the bore. Can you feel it with your fingernail when its dry? can you feel it thru a film of oil.?This is the only potential show stopper I've seen so far. If you can massage these nuances out, you're on your way to a safe and cost effective rebuild. Anybody can send the motor away and spend 15K on it. If you rebore then its WW3.pistons..rings..gudgeons.bearings oh dear!!So my philosophy with this project has been to fix what needs fixing as distinct from what would be nice to fix.
Quote from: daantjie on 13 February 2023, 11:03 PMHere is a very timely video for you. I actually enjoy this guy's channel, lots of old school tips:https://m.youtube.com/watch?v=qQJ6LCOSvmI
Quote from: daantjie on 13 February 2023, 10:02 PMFor 6.9 parts check out oldbenz.co They're in Canada but I'm sure they'll ship to US.
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