[T2] [VB] Hot engine
robtmann7 at gmail.com
Thu Sep 26 19:27:45 PDT 2019
Use a mirror to view the intake grille at the front of the fan housing.
Mine got clogged with grass clippings, unbeknownst to me!
The flush intake louvres of the Splittie are readily improved with no
moving parts. An oblong strip of aluminium as wide as your 4 fingers,
vertical down the rear edge of the louvres, stands out at c.40°, tucks into
the top & bottom slots, packs air into the slots at cruising speed. Us
Berkeley Splittie fans developed this c.1966; the factory was evidently
inspired by it when designing the nice intakes for the Bay.
Those compressions are satisfactorily high, and impressively even;
'73 1600dp Devon camper
On Fri, Sep 27, 2019 at 2:16 PM Chris Dreike <cdreike at gmail.com> wrote:
> In poking around on The Samba, I saw a reference to maybe the vents on a
> splitty are not large enough to support the dog house size fan.
> Also my compression measures at 1-4, 150, 155, 155, 160. The engine builder
> was targeting 8:1 compression. Not sure if 155 is close to that. Anyone?
> On Thu, Sep 26, 2019 at 6:27 PM Sam Williams <sglw at aol.com> wrote:
> > I had a similar problem, and found some paper had been sucked into the
> > back of the fan.
> > I had to keep under 50 to get the oil temp down to 250
> > Sam,
> > 63 single cab
> > -----Original Message-----
> > From: Chris Dreike <cdreike at gmail.com>
> > To: VW type 2 late aircooled <type2 at type2.com>; <vintagebus at type2.com> <
> > vintagebus at type2.com>
> > Sent: Thu, Sep 26, 2019 3:56 pm
> > Subject: [VB] Hot engine
> > Hi,
> > My previous post talked about having hot heads on my engine. I gets hot
> > just accelerating from a stop light to 50mph.
> > The engine is a 1776cc. Scat cam (c25 grind similar to W-100) and Scat
> > Street heads with stainless valve covers. Dog house style, wide, balanced
> > fan and dog house oil cooler.
> > I am running both a air fuel ratio and a cylinder head temp gauge so I
> > what the engine is doing.
> > I have a megasquirt controlled fuel injection system so I have great
> > control over all the engine parameters. The engine is hot whether its
> > running rich or lean. 28 degrees max advance or 38 degrees when running
> > lean on a light load. Rich is 12.7:1 and lean is 17:1.
> > I need to check to see that the fan belt is not slipping, I have a tach
> > that. There does not seem to be anything caught in the fan that I could
> > feel (engine off).
> > The engine oil always ran hot in the past up to 260F until I recently
> > installed an external cooler in addition to the stock dog house and it
> > run consistently at 210F in town or on the freeway. I also have a full
> > filter.
> > I'll check compression before pulling the engine
> > Anyone have other suggestions?
> > Thanks,
> > Chris
> > .
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