Open Chamber Gremlin Cyl. Heads & Roller Rocker Arms

["Brien Tourville" <hh7x@xxxx>]

From: <mrmopar00@xxxx>
Subject: UPDATE 79 Spirit

I recently posted an ad selling a 4 cyl and a 5spd!
It is a 4 spd. I do apologize!!
The mileage is 43,729 kilometres!
Thankx, Olly



Message: 4

From: Olly Parent <mrmopar00@xxxx>
Subject: Re: Subject: Glass City AMC Show/ NATIONAL'S ???


Hey Brien,
I know the Gremlin's are a dying breed. I was at that show a couple
of years ago and there was a couple of Gremlin's. What cyl. head are
you buying?? Olly

Brien Tourville wrote: 1. Re: Blank


- . - 

Olly dude - 'Hemimeister' :) - 




I just purchased 2 cylinder heads from Rooster James : 


1970 reads ..3211040-1 with a casting date....april-15-1970

1974 reads...3224490 with a casting date ...feb-8-1974

According to NHRA parts are what year etc. rules :

the 3211040 is a 1971 cyl. head - with the shaft style rocker arm
and the updated intake / exhaust raised ports AMC spent bu koo $$ 
doing flow research on. 

This is the First Year of these Hi Port Open Chamber Cyl. Heads.

The 3224490 is the First of the Last 1975 - 76 Stud Rocker Arm Style
Open Chamber Cyl. Heads.

On the Chris Morrison Mojo Jav. site :)

http://members.tripod.com/~Mojo_Page/Mods.htm

Chris laid out the BluePrints to create a HIGH PERFORMANCE roller
rocker assembly - the one he uses campaigning on his racer -
BluePrints are there and FREE to download.

He runs the '69 Large Port Head - which is the one that 
AMERICAN MOTORS took to the Flow Bench and redesigned
into the 1971 - 1976 Hi Port Open Chamber Head.

This design is MORE stable than a later day Stud Rocker Arm
assembly run on the Team AMC with the Ford
Big Block Rocker Arms and a custom Stud Girdle.


For All You Stud Rocker Arm Inline 6 owners -
Mr. Morrison took it to the Design Table again -
(he is an Engineer ) - along with Harland Sharp
and they produced AFFORDABLE ROLLER ROCKER ARMS
for Stud AMC Inline 6 Engines.. $220.00 a complete Kit
and are made to your order - go ahead.....beat that!


This is a bargain . MoPar is nearly $600.00 since they
gyp you by selling them in "Pairs" & are made
by Hesco .

Check these out :

http://home.everestkc.net/greyhnds/rocker.html


I'm building a Turbo Motor & have done the Homework 
on the important part - Combustion Chambers .

The Open Chamber Heads are BEST for Supercharged or 
Turbocharged Engines - similar to the Chrysler HEMI - 
only shallower - flatter . The effect is one quench area.

The valves are seperated quite a bit by design -
this allows a cooling passage for the Exhaust Valve
between the two valves -
to make for a super high mileage - long life cyl. head.

Torching of Exhaust Valves in Turbo Engines is rare but
does happen to Race Boost Engines.

I'll run a 1997 - 2001 4.0 Jeep shortblock with the twice
as thick cylinder walls & the larger piston bores .

A maxed up 1980 12 counterweight crank tossing Manley
Forged rods with Venolia or Keith Black slugs.

Turbo is from a 262 GM .

Just finished a SAE (society of automotive engineers) 
Paper on the redesign of these inline 6 heads.

Lots of flow bench time coming up with the port work.

Alot of it went to waste on the 1977 - 1988 AMC
engines as changes were made for Pollution and low
rpm engine running for fuel consumption interests .

Combustion Chambers went to semi - closed items .


Brien
1981 AMC
'milners coupe'