throttle return spring bracket

[rdssdi]

Has anyone replaced the standard fiberglass air box with 2 K&N air filters?

How did you attach the throttle return spring?

Bob

[elansprint71]

This shows (almost!) the bracket on my Dellorto set-up, there is a small hole in the bottom of the bracket which the return spring is anchored to.

Cheers,
Pete.

[rdssdi]

Although I am running Zenith Stromberg carbs, I like your design. I will have to look at the car tomorrow but I believe I can attach a bracket as you have from behind the casting using longer bolts.

I would appreciate any additional photos or information/suggestions.

Thanks

Bob

[frearther]

RD Enterprises has a neat low profile throttle return spring hookup that is more positive than the original layout and does not need the airbox. I don't know if it's available on the right side of the pond or not

[Rob_LaMoreaux]

Has anyone replaced the standard fiberglass air box with 2 K&N air filters?

How did you attach the throttle return spring?

Bob

Hi Bob,

Why replace the standard airbox? Except that it is a little too shallow for the #4 weber venturi it is an excellent design. It pulls cool air from the nose where 2 carb mounted filters would get warm air.

I used a K&N cone filter in the nose since the original filter was long gone by the time I got the car. Now that I have the weber engine in the car, I am planning on reshaping the fiberglass box to add more depth in the rear. I can see with a right hand driver that would not be a good option, but with a lhd driver it seems to me to be the best method.

Just my 2 cents and not worth much more than that.

Rob

[rdssdi]

I have zenith stromberg carbs not webers.

I replaced the air box because I ran out of room in the nose for the air filter. I added one Lockheed brake booster to this already cramped area.

The K & N's were my only option as the Pipercross or ITG filters are too large. At least hat is what I was told. I would have to measure as Piper Cross offers a filter that covers two strombergs and is just under one inch in height.

Anyone attached any of these to a LHD +2 with Zenith Stromberg carbs.?

Bob

[Phil W]

Replaced mine years ago with K & N's from Demon Tweeks (oval). They also supplied a cable mounting bracket.

[M.J.S]

Has anyone replaced the standard fiberglass air box with 2 K&N air filters?

How did you attach the throttle return spring?

Bob

On my car the previous owner has removed what is I assume is the original lower bracket where the throttle cable hooks through, and has then riveted it in place into the backplates of the K&N's. For the top return spring a simple L shaped bracket is bolted through the same plate on which to attach the spring. Simple and not too pretty but it works. I will modify and make it neater when time permits.

Mark.

[rdssdi]

I was sold the round K & N filters. The front filter contacts the hood (bonnet) and I have removed them in favor of the original fiberglass air box using the trunking and a K & N cone filter in the nose. I have yet to mount the cone filter so I assume as all things lotus are a pain in the &%^$^%& it will be an ordeal.

Of course this was discovered after I designed and had fabricated a return spring bracket that worked great.

So it goes.

Bob