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tips, technology, tools and techniques related to vehicle driveline components

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roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

How much tilt, for a Webber IDF ?
Posted by: roverman
Date: May 30, 2014 02:55PM

I notice DCOE's tolerate, some "tilt", how about IDF's ? Making my inlet manifolds, and want to straighten the runners. Thanks, roverman.


Wildcat
Rik Hofste

(19 posts)

Registered:
10/21/2013 01:28AM

Main British Car:


Re: How much tilt, for a Webber IDF ?
Posted by: Wildcat
Date: June 02, 2014 04:47AM

Roverman,

IDF's can handle up to 7 degrees tilt otherwise you will get problems with the floatbowls.
More important is to have the throttle plates opened equally (outside to inside or vice versa), in order to create the same air flow suction.



Cheers
Rik
Cobra webers IDF.jpg


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: How much tilt, for a Webber IDF ?
Posted by: roverman
Date: June 02, 2014 01:03PM

I like "tip-in", of the throttle plates, towards the short turn radus, of the ports. Thanks, roverman.


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: How much tilt, for a Faux Webber IDF /port injected?
Posted by: roverman
Date: June 12, 2014 12:28PM

I learned from "Richard" at West Coast Racing Heads, IDFs' are very time consuming, to get correct throughout the range. I want the "look", so why not use 48's as TB's, with port injection ? Perhaps Fred Key, has heard of SDS, injection controllers, in his domain ? Used as TB's, I could tilt the IDF's at any angle= straighter inlet port. Ported 907 head will port/flow to 300 cfm., and stay dry. Coolant passages limit the inlet port sizes. Onward, roverman.


Wildcat
Rik Hofste

(19 posts)

Registered:
10/21/2013 01:28AM

Main British Car:


Re: How much tilt, for a Webber IDF ?
Posted by: Wildcat
Date: June 16, 2014 03:42AM

The setup of IDF is time consuming while once synchronised you need to find the ideal idle jet, main jet and air corrector configuration, but same can be said about TB's as you need to map the program on a rolling road or during driving.
If you haven't bought the IDF's then you could also use Jenvey's TB : [www.jenvey.co.uk]
or TWM/Borla TB's [www.borlainduction.com]

When using the IDF's as TB's you could also check Megasquirt and Haltech as software.

Cheers
Rik


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: How much tilt, for a Webber IDF ?
Posted by: roverman
Date: June 24, 2014 07:00PM

Only IDF's, will look retro enough, for me. "But" as tb's, I can tilt them any angle, to increase the tuned length, think cross-ram. Making my own inlet manifolds, I can have the stacks, cross each other. Onward, roverman.


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