Re: [AMC-List] Needing a 4.0 Liter Head for Conversion from 4.2-(86 CJ7)
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [AMC-List] Needing a 4.0 Liter Head for Conversion from 4.2-(86 CJ7)
- From: "Jim Blair" <carnuck@xxxxxxxxxxx>
- Date: Thu, 31 Aug 2006 15:53:57 -0700
A: JUst a small word of warning: If you are going carb (and you are in an
emission test area) you would be better off with an '87 to '90 head (Renix)
and stock header. It has the EGR pipe like the carbed manifold (if you don't
retard your cam, it'll ping like crazy or the knock sensor will keep timing
heavily retarded) The HO EFI system is what makes more power over the Renix.
The throttle body is larger opening and the injectors are larger plus the
cam retarding (done through the timing gears) pushes the power band higher,
increases the HP and torque peaks.
The rest is done through the port design of the head (raising them so air
is directed in a straighter flow at the valve opening) That is why the
upgrade of the last intake manifold makes more oomph.
From: "Munro, John" <John.Munro@xxxxxxxxxxxxxxx>
Subject: [AMC-List] Needing a 4.0 Liter Head for Conversion from
4.2-(86 CJ7)
To: <amc-list@xxxxxxxxxxxx>
Message-ID:
<BBF0140983AA224BB73B56B66D78EC590A2D443C@xxxxxxxxxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
Needing a 4.0 Liter Head for Conversion from 4.2 Liter
1991 or newer. These are high port, H.O. (High Output) heads
used on all
4.0L Engines.
Head casting # 7120
Hopefully this info is correct
_________________________________________________________________
Windows Live Spaces is here! It?s easy to create your own personal Web site.
http://spaces.live.com/signup.aspx
_______________________________________________
AMC-List mailing list
AMC-List@xxxxxxxxxxxx
http://www.amc-list.com/mailman/listinfo/amc-list
or go to http://www.amc-list.com
Back to the Home of the AMC Gremlin