Some contention in NASCAR over this one. But basically they got to look at
the Dodge, Ford and Chevy engines first. They then decided what were the
attributes of each design and built their motor accordingly. Obviously there
is a lot of modern casting, metallurgy, flow work and machining involved.
Looks a lot like an SB2 Chevy with a Ford front mount distributor.
JB
----- Original Message -----
From: "Bryan Savage" <basavage@earthlink.net>
To: "List Land Speed" <land-speed@autox.team.net>
Sent: Sunday, February 15, 2004 1:33 PM
Subject: The Toyota NASCAR Racing Engine.
> I saw the last 3/4 of a Toyota sponsored program about their new race
motors
> designed to NASCAR specs. It was fascinating.
> They assigned a group that had designed winning CART, IRL and
> competitive F-1 motors
> the task of designing a 358 CID push rod (what's that??) OHV motor.
> Nothing about the
> design had to be "like" anything ever built before. It just had to meet
> NASCAR specs.
> Length, width and height are flexible - the engine bay in a race car
> fits the motor, not
> the other way around. The casting spends a lot of time on a five (5)
> axis CNC machine
> because the casting appears to have a great deal of extra material
> everywhere.
> The bore centers looked very large to me. Wet liners, 2" thick deck,
> main webs a bit thinner
> than the Great Wall of China, the only "as cast" surface I saw was the
> water jacket area inside
> the cylinders. The basic block looks rigid enough to handle 2,000 HP.
> They didn't show much of the head -- Hmmm.. I think that's where the
> real challenge is for the
> Toyota engineers. Building a strong block is easy and meaningless if
> valves keep falling into
> the cylinder.
> I'm sure some of the super-retro-design aspects of the engine package
> required them to hire
> experienced NASCAR people. Pushrod valve train, distributor and
> carburetor knowledge
> could only come from NASCAR people.
> I failed to write the name of the program down. (rat's).
>
> The Craftsman Truck D-Derby on Friday was disappointing. I hate to see
> race cars get torn up
> even if it's a scheduled part of the entertainment. Anyone for Roller
Ball?
>
> Bryan 58 and partly cloudy in Placerville where we get 40" of rain
> a year (78 in 1980)
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