Carb float level

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Carb float level

Postby Carlos G » Mon Mar 28, 2016 3:08 pm

I have dual Weber 44's on my 2276 type one. I was going to check the float levels. I found a diagram with the IDF and IDE XE float level measurements. Before I start bending tabs and such, I'd like to know how can I tell if my carbs are IDFs or IDE XEs? My float level measurements currently are closer to the IDE diagram than the IDF, but that could just mean that mine are way off if they are actually IDFs.

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Re: Carb float level

Postby WasserSpyder » Tue Mar 29, 2016 4:51 am

I copied this from my reply on the Speedster board, just so it didn't go unanswered. I am sure there are some dune buggy guys on here that have more experience with off-road (XE) carbs...

I am familiar with IDF and IDF XE series of carbs. Never heard of an IDE XE...

The differences between the IDF and IDF XE (for extreme) aren't all that great. The XE has some extra sealed bearings, longer jet holders, thicker diaphragms, and heavier springs. It is my understanding that they are essentially an IDF with these areas "beefed up" for the dune buggies. The difference in float level is to aid in fuel delivery when subjected to the extreme "conditions" created in the dunes (jumping, wheelies, rough terrain, etc...)

When I first saw the XE carb they were ONLY factory made by the Italian factory, thus if your carbs were stamped "Made in XXXX" and the "XXX" was anything but Italy, you could rule out it being an XE. (but that doesn't confirm it is an XE either). Now, you can buy an "XE" kit to convert your own IDFs, so it is anyone's guess. Might be best to check with your builder or engine builder and ask them.

As far as float level goes, I've set XE carbs to the same specs as normal IDFs and never had an issue.
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Re: Carb float level

Postby beck688 » Tue Mar 29, 2016 1:16 pm

I could never figure out why the lower float level was important -- particularly important enough to be called out at .5 mm
Oh sh*t -- It was rocket science!
That's how my brain works. It's not a perfect organ.
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