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196 intake plate gasket

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tomj View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tomj Quote  Post ReplyReply Direct Link To This Post Posted: Sep/03/2018 at 10:24pm
Originally posted by farna farna wrote:

I always loosened ALL head bolts when replacing the intake plate,then torqued back down in sequence.

i think that's wise, and hadn't considered it. to prevent shifting or other issues i could probably back them off in the pattern, down to 30 ft/lbs etc to keep it intimate then remove the six necessary. i'll ask my machinist about this.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farna Quote  Post ReplyReply Direct Link To This Post Posted: Sep/04/2018 at 5:49am
Other than the 172.6/184/196, I think all the previous Nash sixes had seven main bearings. I wrote an extensive article on the Nash/Rambler/AMC sixes from the first in 1916 through the 4.0L some years ago.

Almost forgot I had all the PDFs on my computer! AIM #27, 2003. All but that first six, built from 1916-1925, had six mains. That first one only had THREE!!! Compression was only 3.80:1, and it only put out 46-60 hp, depending on year. With only three mains 60 hp was probably about the max. RPM was a low 2200-2400 for max power. Sizes were 207.4 and 248.9. I didn't have any info in the article on crank flanges, Tom is probably right about the four and six bolt configurations. I do have some old Nash manuals, don't know if they show the flanges or not. If someone is really interested I'll look through them.

I never worried about sequence when taking a head off. I don't think the short time under uneven stress, especially with the engine not running, makes a difference. Never has, and I've had a few 196 OHV heads off and on.
Frank Swygert
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