Re: [Amc-list] WHat year 258's get water intake? Real world advantage?

[Frank Swygert <farna@xxxxxxx>]

My 63 American had the tube, it was an original Idaho car. IIRC the intake tube is on the heater return line. I know there's no extra nipple on the water pump, and the heater valve screws into the head. So that means it wouldn't heat much (I suppose there would be some inversion) unless the heater was at least partially on. That leads me to believe it was used in cold weather states. The 63 TSM shows the water heated intake, but makes no mention of when it was or wasn't used. Look to me like the majority of 1V cars would use it since it's prominently mentioned in the TSM. 

I checked back in a 61 big car TSM and the water tube isn't mentioned or shown at all. I checked the 61 American TSM and it IS mentioned! Checked back in the 59 American supplement, but remembered that the OHV wasn't optional until 60. I also checked the 62 TSMs. Big car no, American yes -- same with 63 and 64. So the water heated intake was only used on the American, presumedly to increase fuel mileage since that was the economy model, especially the 1V. Another assumption is that since it's in the heater return line it was only needed during cold weather. 

---------------
Date: Thu, 5 Mar 2009 10:01:23 -0800
From: tom jennings <tomj@xxxxxxx>

I don't know how many 1bbl 195.6 OHVs even GOT the heating tube. Joe's
got one, but the '61 doesn't; and the junk motor I just picked up
doesn't. THe one from the 63 Classic I got from U-Pull-It doesn't. The
cover plate isn't drilled for it (the flat bosses are there).

Maybe it was part of some "heavy duty" package or something.

I still wonder how it was plumbed up. Joe, I forget the history of
yours, was it the original engine for your car? And if so how's the
heated intake plumbed into the waterpump etc?

As far as warm-up goes, OK I'm in Los ANgeles but I can tell you this:
under 1 mile of street driving (30 mph) and I can detect warmth out of
the heater. It's fully warmed up (190F) in 5 minutes (a mile or two).
The 232-powered Classic, takes 5 minutes just to feel any heat at all,
and twice that to fully warm up.

It may be that the 195.6OHV is simply a "bad design" and all that
waste heat collects in the head where the heater gets it, and the 232,
it goes into turning the crank. But it's nicer to drive on a chilly
morning  :-) 

-- 
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

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