Engine Holds Rpm After Removing Ram Tubes

[Farch]

hi folks,

 

I removed the ram tubes from the side draft webers to fit the new air filters on my highly modified 4k-c and it now holds rpm when changing gears and will increase idle by it's self sometimes

 

is this because the of air leaks or some from removing the ram tubes? i've heard somewhere that the ram tubes on webers are used to help the venturi in place.

 

i'm getting a friend to mill down the ram tubes so they fit beneth the filters will this fix it?

[altezzaclub]

i've heard somewhere that the ram tubes on webers are used to help the venturi in place.

You're probably right- check and see if there is a grubscrew and lucknut holding them in place. I think there is one holding the choke tube in place, but I can't remember what locks the venturi in.

 

Try to wiggle them to see if they're loose. Webers run OK without ram tubes but I don't know if a stub tube is needed to hold the venturi in that case..

[Farch]

i'm guessing i've somehow managed to introduce a air-leak around the soft mounts or something like that.

[corollaart]

It sounds like your got a inlet leak.Are they 40s or 45s as they have different venturi set ups.

 

The problem sounds like its on the other side of the carbies eg soft mounts.

 

What sort of air filter is it?

 

The 40 i have is k&n which has a gasket on the outer edge and o rings sandwiched between the outer venturi and the filter base.

 

Was it running well before?

 

rob

[Farch]

there 40 dcoe's and they running ok before with filter socks on them but those filters don't fit properly as the interfere with the strut tower. now twin k&n's are installed