Weber 48 IDA

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Weber 48 IDA

Postby nickm » Mon Mar 13, 2017 5:32 pm

I am considering carb options for the fast road Essex I am building,and wondered
if anyone had tried an IDA on their Essex?
I know they used them on Group 1 Capris and can produce a lot of power,
but I am wondering what the low rev tractability is like and whether they
cause bore wash problems like the DFI 5?
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Re: Weber 48 IDA

Postby Nick » Mon Mar 13, 2017 6:10 pm

How much power do you want? A 38DGAS can be good for about 170 bhp.

I have a40 DFI5 on mine which is fine, but needs correct jetting. Don,t know about the IDA
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Re: Weber 48 IDA

Postby nickm » Mon Mar 13, 2017 7:41 pm

I would like about 180-190bhp,and as you say the 38DGAS limits it to 170ish.
I am considering the twin 38DGAS from the Car Clinic[which they reckon is worth 20bhp],
but just weighing up the options.
I have a Transit single carb D port manifold which has the carb place towards the front.
If I adapt the manifold to mount the 2nd choke of an IDA it would be placed very evenly
in a longitudinal position.
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Re: Weber 48 IDA

Postby Nick » Wed Mar 15, 2017 4:03 pm

The 48 IDA should flow plenty of air, Presumably it needs wider mounts than a 38 DGAS. (the 40 DFI5 fits the same mounts). I think John Wade does "bored out" 38 DGAS which appears a reasonable solution.
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Re: Weber 48 IDA

Postby Coupe' Racing » Wed Mar 15, 2017 4:28 pm

I have a spare 40DFI5
Blessed are the Cheese makers

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Re: Weber 48 IDA

Postby Elizabeth's dad » Wed Mar 15, 2017 6:39 pm

There's an article in an old issue of Hot Car magazine by David Vizard about Swaymar testing an IDA on an Essex. It gave good power, but they went with the Holley as a conversion. I have a feeling Ric Wood has used one on an Essex in more recent times.
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Re: Weber 48 IDA

Postby Roger Pennington » Thu Mar 16, 2017 12:25 am

Most of the Group 1 Capris racing now seem to favour the IDA - I had a peep under Ric Wood's bonnet a week or so ago:

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Re: Weber 48 IDA

Postby nickm » Thu Mar 16, 2017 3:34 pm

Very nice.
I am wondering about the height of the set up.
I think the IDA with trumpets is about 180mm plus a bit for
air filter clearance and I don't want to cut a hole in my bonnet.
Will have to get the tape measure out.
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Re: Weber 48 IDA

Postby nickkeyser » Thu Mar 16, 2017 8:13 pm

What about one Weber IDT!?
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Re: Weber 48 IDA

Postby Stroker » Sat Mar 18, 2017 6:26 am

My vote goes to the 500cfm 2BBL Holley on the standard manifold.
The Holley's are designed for multi cylinder application as opposed to the IDA which was designed for single cylinder per barrel applications.
Also you should be able to fit the standard air filter box on the Holley with a bit of grinding/hammering. :mrgreen:
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Re: Weber 48 IDA

Postby nickm » Sat Mar 18, 2017 1:09 pm

Or how about a single Weber 40DCNF?
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Re: Weber 48 IDA

Postby Coupe' Racing » Sat Mar 18, 2017 1:48 pm

It is not a direct fit due to stud spacing
Blessed are the Cheese makers

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Re: Weber 48 IDA

Postby nickm » Mon Mar 20, 2017 6:01 pm

Coupe' Racing wrote:I have a spare 40DFI5

PM sent
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Re: Weber 48 IDA

Postby Coupe' Racing » Mon Mar 20, 2017 6:35 pm

Replied
Blessed are the Cheese makers

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