"MM54" (mm54mk2)
07/26/2018 at 21:25 • Filed to: '71Chevelle
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"MM54" (mm54mk2)
07/26/2018 at 21:25 • Filed to: '71Chevelle | 4
| 7 |
As I tore this engine down, I suspected it to have been rebuilt before due to the liberal use of orange RTV on everything and one-hell-of-a-blue-sealant holding the heads on (plus the nose of the crank looks like someone turned it over with a pipe wrench) . I confirmed that when I pulled the pan and flipped it over this evening.
Just about every part not shown here is up for grabs if anyone wants it
The rods and caps have already been number-stamped. What’s interesting is that they go 1, 2, 3, 4, 5, 8 , 7, 6 . Whoops. I can’t decide if I should leave the numbers and plan to put them back right or if it would be best to just leave them out of order and re-stamp 6 and 8 as 8 and 6 .
For the curious, the bores seem okay, with minor scoring and very little ridge. If I’m really lucky I might not have to buy pistons.
Urambo Tauro
> MM54
07/26/2018 at 21:58 |
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one-hell-of-a-blue-sealant holding the heads on
Blue... sealant? Did somebody put RTV on the head gaskets?
Wait. OH NO. You don’t suppose they...
!!!error: Indecipherable SUB-paragraph formatting!!!
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MM54
> Urambo Tauro
07/26/2018 at 22:04 |
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It took an incredible amount of shot hammer beating to crack the heads loose (I picked the engine/stand up onto two wheels with the prybar)
. It was definitely something brushed onto the gaskets before assembly.
Die-Trying
> MM54
07/26/2018 at 22:14 |
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it shouldnt matter if you leave them out of order. the important thing is that the beveled edge of the big end of the rod is facing the crank. and even if you move them back(to their correct hole) , they are still going to be facing the same direction....... the only time stuff like that matters is when you have pistons with valve reliefs that are specific for the intake/exhaust with one larger than the other. most of the stock-ish pistons just have a couple identical grooves, and an indention to point forward....
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Urambo Tauro
> MM54
07/26/2018 at 22:25 |
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Kinda sounds like a gasket dressing/shellac then, except that the blue c
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is throwing me off. Piqued my curiosity, so I did some poking around and came across something called Hylomar Blue.
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?
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MM54
> Urambo Tauro
07/26/2018 at 22:50 |
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It very well may be. I hardly looked at the gaskets (came off with the heads) but they may be old school steel shim style, which need some goop to seal properly I believe
.
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MM54
> Die-Trying
07/26/2018 at 22:52 |
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I figured as much (6 and 8 go the same way, not like they swapped around 5 and 6 or something). The bevels are all the right way around and none are particularly loose; I’ll probably plan to leave them in the order they are now, and re-stamp the 6 into an 8 and re-stamp the 8 as 6 before I pull them out. That should really throw off the next guy!
Wait a second, that next guy will probably be me...
SilentButNotReallyDeadly...killed by G/O Media
> Urambo Tauro
07/26/2018 at 23:10 |
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I used to call Hylomar Blue ‘Land Rover Glue’ given its contribution to solving weeping oil issues on the old alloy V8...