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914World.com _ 914World Garage _ DRLA venturi orientation

Posted by: era vulgaris Mar 26 2016, 11:22 AM

I'm reassembling my Dells. Which way do the lower venturis go in? With the number towards the top?

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Posted by: GregAmy Mar 26 2016, 12:14 PM

QUOTE(era vulgaris @ Mar 26 2016, 12:22 PM)

I'm reassembling my Dells. Which way do the lower venturis go in? With the number towards the top?

Tapered side up, square side in first.

Said differently, the "34" end should be pointing out the top of the carb.

Posted by: MarkV Mar 26 2016, 12:25 PM

The narrowest end goes up. If I remember correctly the numbers go up.

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Posted by: era vulgaris Mar 26 2016, 12:30 PM

Awesome, thanks guys!

Posted by: cgnj Mar 27 2016, 07:44 PM

Hi,
Big end up narrow end down. Dont make me open my dell crate to check.

Posted by: GregAmy Mar 27 2016, 08:10 PM

Tapered end up to transition the incoming airflow from the large carb throat to the narrow venturi throat. The square end goes down to ride on the square bottom of the carb throat.

If yours is not that way...well, it's wrong and you're creating turbulent airflow and reducing power.