[DML] Re: DMC Air Filter Housing

["content22207" <brobertson@xxxxxxxxxxxx>]

Absolutely correct (contemporary F series at least) -- only difference
is DMC placed a fancy sticker on theirs. Note that Volvo used the same
air filter housing after 1976 for B27F as well. Sometime in the late
1980's they moved the air filter to the driver's inner fender and ran
a tube to the fuel/air mixture unit.

DeLorean simply used bone stock Volvo B28F's with the following mods:
- Removed one of the centrifugal advance counterweight springs and
advanced base ignition time from 10 to 13 degrees BTDC. Otherwise
ignition distributor is identical
- Monkeyed with the idle speed ECU to lower CIS from 900 to 750 RPM.
Otherwise all system components are identical
- Lambda was left unchanged (.7 to 1.3% CO is Volvo F spec)
- Omitted the smog pump and air injection ports in the exhaust manifolds
- Omitted EGR (that's what the plate covered port in the U pipes is for)
- Omitted any auxiliary vacuum pump (Volvo equipped some cars with
one, bolted to cylinder 1-3 valve cover and driven by the cam)
- Substituted a very common Sankyo (Sanden) A/C compressor for Volvo's
larger unit, otherwise in the same location
- Relocated the alternator, which required a different adjusting bolt
boss, but 70 amp Motorola unit is otherwise identical to Volvo
- Pressed a single belt pulley onto the water pump shaft in lieu of
Volvo's bolt on double belt pulley (pressed on bolt flange)
- Used a proprietary crankshaft pulley with smaller outside groove to
prevent A/C belt interference with the water pump pulley
- Used a proprietary oil pressure gauge sending unit

Hardly a legacy of advanced engineering.

When I first entered DeLo ownership, I too subscribed to the common
misconception that our little silver cars are powered by exotic
engines, radically dissimilar to any other automotive powerplants.
Have since learned better. Not only did Douvrin crank out nearly 1
million units, but the design is actually quite conventional (albeit
quirky).

Note also that, south of the intake manifold, my current carbureted
PRV is every bit as much B28F as a factory DeLorean, sans undrilled
fuel injector ports of course (and the ignition distributor does have
both counterweights).

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "DMC Joe" <dmcjoe@xxxx> wrote:
> 
> FYI: The air cleaner box used on the DeLorean was used in the Volvo PRV
> engine set up. Therefore there were no budget or time constraints in
their
> design or development.
> 
> DMC Joe 
> 









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