[T3] Tight Engine

[Bobnotch]

We haven't had any issues with Rob's engine. Remember, these engines are used
to pulling warm air from around the engine bay in a bus. On a 411/412 Wagon, they
use a cooling boot that is actually smaller than a type 3 boot. We used 1 of those
on Rob's. It was NLA back when I got it in the early 2000's.
Russ always kept harping that the T-3 fan was the largest cooling fan ever used on
an air cooled engine. And after seeing a T-4 fan, I can definitely believe it. It's smaller
in diameter, but twice as wide as a T-3 fan. But, there are several T-4 powered t-3's
on the Samba, and most have carbs, with Nate running MS 3. He's also running
a large engine, and is playing with it on SOLO circuits, along with his son taking it up to
138mph at Bonneville last year.
Bob


-----Original Message-----
From: Jim Adney <jadney at vwtype3.org>
To: type3 <type3 at vwtype3.org>
Sent: Wed, Aug 1, 2018 3:43 pm
Subject: Re: [T3] Tight Engine


On 1 Aug 2018 at 11:07, William Jahn wrote:

> isn't it sort of a risk to pull the spark plugs when hot ? My guess is
> Jim suggested doing so with it cold , yet as I said I have no idea what
> the heads are made of .

Yes, I would worry about that, but I think you could get away with it if you
removed the plugs first and coated them with a good antiseize then warmed
up the engine and removed them again. That's a lot of work to go thru, but
less work than tearing down the engine with no idea of what you're looking
for.

> I just wonder how the engine gets it's cool air through the fan since
> it's in a T-3 body .

Yes, that's a problem, but I'm willing to believe that Keith has done this
effectively. Another question might be whether the air passages in the Type
3 body can carry enough air to cool a Type 4 engine. What we know is that
other people have done this and gotten away with it. At least that's the story
they're sticking with.

--
*******************************
Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
*******************************

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