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

[Wrambler <wrambler242@xxxxxxxxxxx>]

I've always been baffled by the use of a heated intake and it being run through the heater core.
If I was doing DD duties with a carb'd 199-258 six in this day and age I would replace the standard heater shutoff valve with a 4 port shutoff valve that flow coolant through the intake at all times.
It should increase driveability and fuel economy, plus make the carb a little easier to tune, since it would remove a variable.

I'm not sure it would do squat for mpg, but it would be worthy of the experiment if you could scrounge up the 4 port valve.
Flip side is that you could do a run through with a hose and no valve at all for a few tanks of gas to see what if anything happens.

  I doubt the 196.5 will see any improvement at all since the head/intake/exhaust is all combined anyway. 
I'm thinking that heated intake plate was a Guv'ment thing forced on them as I sure don't see another reason for it!

Now, I wonder, have I prodded Tom enough? Will he be able to withstand the temptation to try this?

Mark Price
Morgantown, WV 26508
1969 AMC Rambler, 4.0L, EFI, T-5
2004 Grand Cherokee Laredo, 4.7L, Quadratrac II
"I realize that death is inevitable.
I just don't want to be around when it happens!"

----- Original Message -----
From: "tom jennings" <tomj@xxxxxxx>
To: "AMC/Rambler owners, drivers and fans." <amc-list@xxxxxxxxxxxx>
Sent: Thursday, March 5, 2009 5:50:50 PM GMT -05:00 US/Canada Eastern
Subject: Re: [Amc-list] WHat year 258's get water intake? Real world advantage?

On Thu, Mar 5, 2009 at 2:17 PM, Jim Blair <carnuck@xxxxxxxxxxx> wrote:
>
> The 2.5 in my '86 Comanche with Renix TBI is plumbed to get hot water only when the heater is turned on.


Well that's pretty interesting. It makes me wonder -- what WOULD the
temperature of the aluminum intake be without water? 2.5L or
232/258... I assume it would vary, and more than the iron manifold. I
suspect in warm-ish weather it would be fairly hot, but to be honest,
I have no idea how much heat energy the fuel+air mixture would suck
out of it at speed, or if manifold heat soak would overcome that.
_______________________________________________
Amc-list mailing list
Amc-list@xxxxxxxxxxxx
http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list
_______________________________________________
Amc-list mailing list
Amc-list@xxxxxxxxxxxx
http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list