[Shotimes] (OT) Marauder
Gerald Harmon
gharmon@knology.net
Tue, 5 Nov 2002 20:11:22 -0500
>Years ago when I was into 5.0 Mustangs (before I bought my SHO), Super Ford
>magazine had an article about a company that made 4V heads for the 5.0.
>Neat idea but it looked kinda complicated plus I think there were
>reservations about the reliability as a hi-perf item. They never gained
any
>popularity that I know of and just faded away.
The main reasons were that now sanctioning body allowed the use of a 4 valve
head in compettion (FFW) + the were priced rather high compared to all the
new hi-flowing heads that were hitting the market at the time. The name
was Dominion. The also made them for the SB Chevy and I don't think it
fared well there either. At least not that I heard.
Gerald
>
>Mark
>
>> -----Original Message-----
>> From: shotimes-admin@autox.team.net
>> [mailto:shotimes-admin@autox.team.net]On Behalf Of David P
>> Sent: Monday, November 04, 2002 1:51 AM
>> To: Midwest SHO Specialists SHOtimes; dmall@mwonline.net;
>> shotimes-admin@autox.team.net
>> Cc: shotimes@autox.team.net
>> Subject: Re: [Shotimes] (OT) Marauder
>>
>>
>> I want to see these plenty of 4 valve OHV motors.
>>
>>
>> David P
>>
>> 95MTX
>>
>>
>>
>> ~
>> ----- Original Message -----
>> From: "Midwest SHO Specialists SHOtimes"
>> <MidwestSHOspecialists@hotmail.com>
>> To: "David P" <jpotter8@bellsouth.net>; <dmall@mwonline.net>;
>> <shotimes-admin@autox.team.net>
>> Cc: <shotimes@autox.team.net>
>> Sent: Monday, November 04, 2002 01:33
>> Subject: Re: [Shotimes] (OT) Marauder
>>
>>
>> > Actually there are plenty of of 4 valve OHV motors around. You do
>> not
>> > need to squeeze extra lobes on the cam either. All of the pushrod OHV
4
>> > valve engines that I have seen have fingers in the heads that
>> operate both
>> > intake valves off of one pushrod. This is very similar to how
>> SOHC 16V 4
>> > bangers operate.
>> >
>> > Also Yamaha didn't have the advances that we have now when
>> they were
>> > designing this motor. Keep in mind that the motor was designed 17
years
>> > ago! That's amazing when you think about it. They were
>> waaaaay ahead of
>> > their time. I digress though. Hydraulic tappets were not used for
fear
>> of
>> > high RPM oil foaming which would have caused them to collapse.
>> >
>> > ~ Mike
>> > ----- Original Message -----
>> > From: "David P" <jpotter8@bellsouth.net>
>> > To: <dmall@mwonline.net>; <shotimes-admin@autox.team.net>
>> > Cc: <shotimes@autox.team.net>
>> > Sent: Sunday, November 03, 2002 11:20 PM
>> > Subject: Re: [Shotimes] (OT) Marauder
>> >
>> >
>> > > Since all OHV motors are two-valvers, and four valves allow more
>> efficient
>> > > combustions, then pushrods DO have a bit to do with
>> emissions, at least
>> > > until they figure out a way to cram 4V onto a single cam.
>> Sure, injector
>> > > placement, intake flow, etc play a large part, but when considering
>> solely
>> > > 2V vs. 4V, 4V is going to win on emissions and power. You think maybe
>> > there
>> > > is another reason why the Corvette runs a 2.73 final?
>> > >
>> > > As for OHC being high maintenance, I think you are forgetting that
the
>> SHO
>> > > does not have a hydraulic tappet. Remove the hydraulic tappet from
any
>> OHV
>> > > motor and it becomes just as maintenance intense. Not as expensive to
>> > build,
>> > > but just as expensive to maintain. If Yamaha had inserted hydraulic
>> > tappets
>> > > into their design, we would not be sitting here exclaiming the need
to
>> do
>> > > the 60k on time.
>> > >
>> > > Sure, the small block (or more specifically, the OHV design) will be
>> > around
>> > > for some time, but eventually it will be dropped in lieu of more
>> efficient
>> > > designs in our nation's quest for emissions reduction. Don't get
upset
>> > about
>> > > it though, as OHC's days are numbered as well. There are much better
>> > > air/fuel injections systems on the boards and in testing that
>> don't have
>> > > valves as we conceive them that will see fruition in the last half of
>> this
>> > > century, leaving OHV as the predominant valve design of the 19th,
20th
>> and
>> > > 21st centuries. Not too bad a run, but definitely a
>> technology that has
>> > > outlived it's usefulness.
>> > >
>> > >
>> > > David P
>> > >
>> > > 95MTX
>> > >
>> > >
>> > >
>> > > ~
>> > > ----- Original Message -----
>> > > From: "Donald Mallinson" <dmall@mwonline.net>
>> > > To: <shotimes-admin@autox.team.net>
>> > > Cc: <shotimes@autox.team.net>
>> > > Sent: Saturday, November 02, 2002 16:24
>> > > Subject: Re: [Shotimes] (OT) Marauder
>> > >
>> > >
>> > > > Yes production was low, although that is what you said, not
>> > > > i. They also sold every one they made, and even ramped up
>> > > > production and held it longer than planned to try to meet
>> > > > demand. You expected maybe they would sell them in Focus of
>> > > > Camry numbers? NO special vehicle sells in big numbers,
>> > > > Cobra, RX7 etc. But they did sell a lot of the basic
>> > > > Caprice, a great tow vehicle and very good police car that
>> > > > the police across the nation still lament not being able to
>> > > > get. They have never warmed up to the low torque and low HP
>> > > > "High tech" Crown Vic.
>> > > >
>> > > > High emissions? Not really, the small block chevy lives on
>> > > > in the Vette and a huge amount of other applications as a
>> > > > low emissions vehicle! And don't spout the "low tech"
>> > > > pushrod cam mantra. The motor works and puts out more HP
>> > > > and torque than competing motors from Ford. Pushrods have
>> > > > nothing to do with emissions, it is ignition and fuel
>> > > > control more than anything, and combustion chamber design.
>> > > > The new small blocks are as good as anything out there,
>> > > > better than most.
>> > > >
>> > > > I am a basic fan of Ford, but there is NO, repeat, NO
>> > > > arguing with the extreme success of the small block Chevy.
>> > > > Ford had a similar motor, but they dumped it. Now they are
>> > > > really struggling with the more expensive to make and
>> > > > maintain OHC motors.
>> > > >
>> > > > And yes, mods are plentiful, they work, and are cheap. That
>> > > > , my friend is the outline and model for the most successful
>> > > > motor of all time, including today. I am willing to bet the
>> > > > small block is around longer than the OHC Ford motor.
>> > > >
>> > > > Don Mallinson
>> > > >
>> > > > sho2go wrote:
>> > > >
>> > > > > ----- Original Message -----
>> > > > > From: "Donald Mallinson" <dmall@mwonline.net>
>> > > > > To: <shotimes-admin@autox.team.net>
>> > > > > Cc: <shotimes@autox.team.net>
>> > > > > Sent: Saturday, November 02, 2002 8:00 AM
>> > > > > Subject: Re: [Shotimes] (OT) Marauder
>> > > > >
>> > > > >
>> > > > >
>> > > > >>I agree with much of what you say, but you imply that the
>> > > > >>Impala from the mid 90's was not successful. Nothing could
>> > > > >>be farther from the truth. That car sold above sticker for
>> > > > >>its entire run, and was only killed when GM needed the plant
>> > > > >>to build more prolific and profitable trucks/suv's.
>> > > > >>
>> > > > >>
>> > > > > Well, I was looking at production nos. awhile ago, and they were
>> low.
>> > > So
>> > > > > what you are saying is that GM kept production low? That would
>> > explain
>> > > low
>> > > > > sales and remaining residual demand. Of course the mods will be
>> > > plentiful
>> > > > > for that engine, but its old tech, high emissions design dooms
it.
>> > > > > Mike
>> > > > > ______
>> > > > _______________________________________________
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