convoluted tubing near rear most carb

[Makse]

Firstly I forgot to take a photo

I have found some convoluted tubing hanging lose in the engine bay with one end connected to the engine next to the rear most carb. It's about 1 inch diameter.

Where does the other end connect to ???

Also the oil breather tube from the cam cover goes to atmosphere as the car has K&N filters. What the best solution for this ??

cheers

[Lotus-e-Clan]

Not sure, but the 1 inch diameter "convoluted tube " could be the hot air start from the air box -... but I thought those were only on the later cars.

The breather is usually sourced at the crankcase (below rearward carb) - not the cambox. ...but the best solution for the orphaned breather is to refit the the original air box, then fit a proper full width K&N panel filter to the OE airbox!

Apart from getting hooked on increased "induction roar", there is nothing brilliant to be gained by ditching the OE air box for OPEN K&Ns. The DHLA carbs are factory jetted and tuned for a plenum airbox which give a more consistent induction air temperature. DHLA's are fixed jet carbs so they depend on a consistent air intake temps all year round if you want consistent driveability summer /winter and during the warm-up phase. The later cars have a hot air box on the exhaust downpipe for this reason...it ensures the air is quickly warmed during cold starts.

[Makse]

Thanks for the info, it must be that then.

The car did not come with the original air box.

[amarshall]

This might help - you can probably ignore all the emissions control F pipe stuff, but the vacuum take-offs would be worth checking against you car.

viewtopic.php?f=8&t=5873

[Makse]

Thanks Alan will compare to what I have. One thing I do know is that the dizzy on the car has no vacuum take off.

[amarshall]

Thanks Alan will compare to what I have. One thing I do know is that the dizzy on the car has no vacuum take off.

That's normal for the non-SE.

[Jason.goad]

On early cars the engine breather system was very basic. The tube connected to the engine sounds like its part of that engine breather system. It should be an elbow about 3 inches long that goes to the bottom of the air filter box. The one from the cam cover also goes to the air filter box. I presume someone has replaced it with convoluted tube. Maybe someone with K+N pancake filters will let you know the best way of routing the breather pipe work. Think it's normally a catch tank.

[Makse]

I have been reading elsewhere that some people have just routed them under the car out of the way.