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Subject: perf-list-digest V2 #195
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perf-list-digest Thursday, August 5 1999 Volume 02 : Number 195



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Ford Truck Enthusiasts - Performance
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In this issue:

Re: FTE Perf - Re: 300 performance
Re: FTE Perf - Turbo on Old 6.9
Re: FTE Perf - Turbo on Old 6.9

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Date: Wed, 04 Aug 1999 10:13:31 -0500
From: William S Hart
Subject: Re: FTE Perf - Re: 300 performance

>revs build. Anyone else have any input? Bill Jeffreys

Hmmm... I've always been amazed by the 300, even with the emissions stuff,
one of my friends broke a vacuum line on his 82 though and the truck got
faster! I'd say pick which way you want to go, and go the whole way with
it ... if you want to fix everything, be prepared to meet some blank stares
at the parts counter as they try and understand why you'd want that part ...

If you are going to remove it, maybe try and find an old 300 or 240 without
the emissions stuff and grab those brackets ... intake side, maybe a
Clifford 4V ?? :)


Just my 2cents

wish

Links http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.public.iastate.edu/~wish/links.html
'73 1/2 ton 4x4 Ford http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.public.iastate.edu/~wish/truck.html
'96 Mustang GT http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.public.iastate.edu/~wish/mustang.html
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Date: Wed, 04 Aug 1999 10:11:20 -0700
From: Vogt Family
Subject: Re: FTE Perf - Turbo on Old 6.9

On Wed, 4 Aug 1999, JUMPINFORD AOL.COM wrote:
>
> In a message dated 8/3/99 8:42:39 PM Pacific Daylight Time, vogt oro.net
> writes:
>
>
> fashioned one? >>
>
>
> Is there a wastegated Version of these turbos? If so, what models had this.
> (Another Wild Duggan idea to follow) Id like to seeabout putting a turbo on
> Tweety. I know I'll need the larger CFM, but I dont gotta worry about that.
> I am getting the Projection Unit Steve had posted about a week ago. This
> also solves the problem of pressurizing the Fuel bowl. I've already got the
> right Comp ratio. My only probs would be things like Vacuum operated
> systems, because doesnt adding a turbo eliminate vacuum? This is an un
> familiar territory for me, so I dont know how it work out. Any thoughts or
> suggestions?

Darrell,

I have already hashed out a plan for turbo-ing my 429. But it is a work
in progress. The banks is one deal, because it is a diesel, it is real
easy to do. They have the parts all pre-fab and the fuel adjustment is
as simple as turning a screw.

Your 460, on the other hand, is going to have to be done from scratch.
You will have to fabricate all the exhaust and intake passages, etc.
Another problem is that any forced induction increases the likliehood of
compression ignition. On a diesel this is good. On a gas engine this
is bad. You must combat it with lower compression and/or higher octane
fuel. This is why I have chosen propane fuel for my project truck. It
has between 105-110 octane depending on who you ask.

Another problem with turboing such a large engine is that the turbine
wheels get large and can take an unacceptably long time to spool up.
The usual solution is to make it dual turbo. This is pricey because the
turbo itself is the major part of the expense and is about $700.

Don't let this put you off, though. Turbocharging is a highly effective
way of increasing your engine's power by a very large amount. It also
retains low end and actually increases efficiency (if you can keep your
foot out of it).

To answer your specific question, the vacuum systems should work fine
since 98% of the time engine vacuum will be right where it was before
the turbo. The heater controls and brake booster both should have
vacuum resivoirs supplied through a check valve. Right now, if you
stomp the throttle, vacuum goes to zero. Any time a turbo 460 is making
boost, anyway, you won't care where the heater controls are and the
brakes won't do anything, anyway!

Birken
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Date: Wed, 04 Aug 1999 13:22:35 -0500
From: William S Hart
Subject: Re: FTE Perf - Turbo on Old 6.9

>
>Your 460, on the other hand, is going to have to be done from scratch.
>You will have to fabricate all the exhaust and intake passages, etc.
>Another problem is that any forced induction increases the likliehood of
>compression ignition. On a diesel this is good. On a gas engine this
>is bad. You must combat it with lower compression and/or higher octane
>fuel. This is why I have chosen propane fuel for my project truck. It
>has between 105-110 octane depending on who you ask.
>

that reminds me, I ran into a guy who had twin turbo's on a 460 in a
Fairmont ... hmmm...it was on the web somewhere that I saw the page, but I
don't remember where exactly, I know I was linked from some 4cyl turbo
sites (Ford of course) ... if that helps get you started, I also remember
it was Mustang sites, if you want the page directly I may be able to hunt
it up, but it won't be quick like ...


Just my 2cents

wish

Links http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.public.iastate.edu/~wish/links.html
'73 1/2 ton 4x4 Ford http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.public.iastate.edu/~wish/truck.html
'96 Mustang GT http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.public.iastate.edu/~wish/mustang.html
== FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html

------------------------------

End of perf-list-digest V2 #195
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