Lotus Elan

AIR FILTERS

PostPost by: "JOHN KENNER" » Thu Dec 01, 2005 9:39 pm

THANKS FOR THE ?CLAT ADVISE. I THINK I?LL PASS ON IT.



I BOUGHT MY ELAN ABOUT 8 MONTHS AGO. IT HAS 1968 RUNNING GEAR AND FRAME AND
A 1966 BODY.



THE ENGINE IS NOT TOTALLY STOCK, WITH A FORD 711 BLOCK BELOW AND A LOTUS TOP
END.



I AM IN THE PROCESS OF CLEANING UP THE ENGINE COMPARTMENT AND DETAILING THE
ENGINE.

THE PO HAD OLD DIRTY REDLINE AIR FILTERS ON THE DUAL WEBER 40 DCOE?S.



I WANTED TO GET A BETTER LOOKING NEW AIR FILTER AND FIRST I BOUGHT SOME K &
N?S.



FOR SOME REASON THERE IS NOT ENOUGH CLEARANCE AT THE CARB CLOSEST TO THE
FIRE WALL

AND THE K & N RUBS ON THE BODY. THE HEIGHT OF THE K & N IS 4 3/4". I NEED A
FILTER

THAT IS NO MORE THAN 4 1/2" TALL.



SO I BOUGHT THESE REALLY NICE LOOKING RAM FLO AIR FILTERS THAT FIT NICELY.

THE THING IS THAT THEY ARE MEANT TO BE USED WITHOUT THE TRUMPETS,



IS THIS A PROBLEM?



THANKS,



JOHN KENNER

66 OR 68 ELAN?
"JOHN KENNER"
 

PostPost by: Lincoln62 » Thu Dec 01, 2005 10:01 pm

John

The engine mount on the exhaust side is a standard Ford part but the one
on carb side is a special Lotus one that raises that side of the engine
about 3/4" (from memory). Mine had a standard Ford mount when I got it
(an understandable mistake as they are very similar to look at) and the
air box used to hit the footwell. Cured when I got the right mount.

As for air filters, Webers are renowned for spitting fuel. They
shouldn't do it if the car is running right but if the tune goes off and
the air filters become soaked with fuel and become a potential fire
risk. It would be my guess that this is the main reason Lotus used the
air box and remote filter in the first place. Filters on the carbs
would have been cheaper. The air box allows the trumpets to do their
job properly as well.

Cheers
Peter

JOHN KENNER wrote:

THE PO HAD OLD DIRTY REDLINE AIR FILTERS ON THE DUAL WEBER 40 DCOE?S.
I WANTED TO GET A BETTER LOOKING NEW AIR FILTER AND FIRST I BOUGHT SOME K & N?S.

FOR SOME REASON THERE IS NOT ENOUGH CLEARANCE AT THE CARB CLOSEST TO THE
FIRE WALL AND THE K & N RUBS ON THE BODY. THE HEIGHT OF THE K & N IS 4 3/4". I NEED A
FILTER THAT IS NO MORE THAN 4 1/2" TALL.

SO I BOUGHT THESE REALLY NICE LOOKING RAM FLO AIR FILTERS THAT FIT NICELY.

THE THING IS THAT THEY ARE MEANT TO BE USED WITHOUT THE TRUMPETS,

IS THIS A PROBLEM?
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PostPost by: Briggs1 » Fri Dec 02, 2005 1:09 pm

John,

The "trumpets" do affect the performance of the webers.

I would not suggest removing them for convenience sake.

I grabbed this from a short search on the topic:

Ram tubes, trumpets or air horns (stacks) should always be fitted to a
modified engine. As a general rule:

1. Short ram tubes are usually used for high rpm applications.

2. Longer rams are usually used to maximize mid-range response.

I have individual "socks" on my Europa Webers, not sure if they would fit in
the Elan but I don?t recall the Elan being a lot tighter than the Euorpa.

Regards,

Briggs Pletcher
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