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Not a good feeling to assemble the engine with the less than perfect block and heads but what can I do, the downside of living here. Replaced the main bearings and got the missing main cap bolts and after another month of lockdown I could start again.
https://cimg0.ibsrv.net/gimg/www.off...5eb63e52c4.jpg https://cimg2.ibsrv.net/gimg/www.off...8d22d2d87c.jpg Timing chain has too much slack, ordered a new set https://cimg5.ibsrv.net/gimg/www.off...eda323cec3.jpg before cleaning the valves https://cimg6.ibsrv.net/gimg/www.off...89b1e5f989.jpg checking rocker arm geometry https://cimg8.ibsrv.net/gimg/www.off...cf41193ccc.jpg |
Yet another lockdown, started ordering spare parts. Decided to replace the timing chain set, the alternator, all senders, bolts and all rubber gaskets of the Hardin parts and a couple of other things like breathers and hoses. And then wait...
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Dang that's a bad machine shop
The pan gasket area can be fixed with even things like JB weld and sand flat, but the cylinder no way. Any more room to bore? Dish pistons to reduce compression maybe |
Bore is already 4.600, not sure how much this can be overbored.
There seems to be a good machine shop in Thailand (neighboring country), but shipping the block back and forth is a major effort and right now impossible anyway, nobody can cross the border. I find myself already looking for complete engines on Facebook. For now I’ll try my luck with the rebuild and when I blow the engine up I guess it’s easier just to order a new one in the States. |
Originally Posted by musthave1
(Post 4775195)
Bore is already 4.600, not sure how much this can be overbored.
There seems to be a good machine shop in Thailand (neighboring country), but shipping the block back and forth is a major effort and right now impossible anyway, nobody can cross the border. I find myself already looking for complete engines on Facebook. For now I’ll try my luck with the rebuild and when I blow the engine up I guess it’s easier just to order a new one in the States. |
Originally Posted by AllDodge
(Post 4775197)
Unless I'm looking at the wrong info, then 502 had a 4.466 bore. If yours is 4.600 that's 0.134 oversize. The 540 is bored 4.500 for a 0.034 oversize
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The Dart big m has more meat in the cylinder wall area, but Id think you're close to max, if not maxed on bore size, a call to Dart will have the answer
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Originally Posted by AllDodge
(Post 4775197)
Unless I'm looking at the wrong info, then 502 had a 4.466 bore. If yours is 4.600 that's 0.134 oversize. The 540 is bored 4.500 for a 0.034 oversize
Just looked up their website: Standard 4.250”, 4.500”, 4.560” or 4.600” bore sizes with siamesed extra thick cylinder walls to resist cracking and improve ring seal (minimum .300” thick with 4.625” bore). |
Love the valave covers . Are Kieth Erchart ? RG.
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Love the name "Big Hole"
I think I must have Big Hole Jr. Awesome work boat will be amazing when completed! |
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