Hello all,
I just upgraded my front brakes to disc. Now I'm thinking about
upgrading the rear brakes. I have a donor car (67) with all the parts
available. Now much should I replace. From the shoes to the entire rear
end???
Thanks, Jim Lempe, Homer AK
AN5L26749
A penny saved is a government
oversite!
________________________________
From:
"WeslakeMonza1330@aol.com" <WeslakeMonza1330@aol.com>
To:
spridgets@autox.team.net
Sent: Tue, April 27, 2010 11:08:38 AM
Subject: Re:
[Spridgets] DCOE 40 or DCOE 45?
In a message dated 27/04/2010 20:03:38 GMT
Daylight Time,
WeslakeMonza1330@aol.com writes:
Hi John,
Jetting data from
dyno testing on its way to you 'For Your Eyes Only' (I'm
ex military!).
I'm
not certain if some UK A-series racers use a 48 DCO (48 DCOE is
obsolete)
with 42mm chokes. If you can find a 48 DCOE it can be choked down to
40mm.
One very respected UK racer had done some machining work so he could get
42mm chokes into a DCOE 45.
What I don't see much of is the use of Full
Radius rams which make a big
difference on how the DOCE pulls from low rpm.
I also don't see many CV
exhaust systems on road cars.
I drive slower than
I used to. The current engine is particularly strong
from 5000 to 5500 rpm
which on 3.9 diff and a five speed is 100 - to about
112mph. If I'm driving
at 4000rpm which is about 80mph in 5th and need to
change to the outside
lane to over take I EXPECT to accelerate to 4,500 rpm
and 90mph pretty much
straightaway and without changing down to 4th.
The engine will pull smoothly
from about 2000 rpm in 4th (on a 3.9 diff)
even if the throttle is floored
and I think I showed Frank this when he was
in the UK though it may have
been slightly higher rpm (2300?) as that engine
was near the end of its life
(though managed to haul the car to 105mph+
the week before I pulled it to
fit the new engine).
With a controlled vortex manifold from Janspeed and Full
Radius rams on
any Spridget with a DCOE, and especially a street car you'd
soon be on the
phone ordering some bigger rams as the engine would pull like
a train but feel
asthmatic going through 6000rpm.
In early days of ownership
my Sprite had a 4.5 diff and a 4 speed so
110mph was 7,500rpm and seen on a
regular basis on weekends. I was much younger
then.
Regards
Weslake-Monza
1330
In a message dated 27/04/2010 19:43:34 GMT Daylight Time,
fastvee@yahoo.com writes:
I know that different size choke tubes can be made
to work in the same
carb body with different jetting combinations, but many
1275 race engines use
smaller venturis than that, so I am surprised. Our
definition of road going
must be vastly different, and your choice would not
be the best choice for
my street driving. I drive fast, but for me road
going means 2000-5000
rpm, with much more time under 4500 than above it, and
where mixture quality
and smooth transition from idling to the main circuit
trumps the last bit of
airflow any day. I would be interested to see your
dyno sheets.
John
Fogelsville, PA
_______________________________________________
Donate:
http://www.team.net/donate.html
Suggested annual donation $12.75
Archive:
http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage:
http://autox.team.net/mailman/options/spridgets/oldtimealaskan@yahoo.com
_______________________________________________
Donate: http://www.team.net/donate.html
Suggested annual donation $12.75
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
|