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Looking For Weber Carb Guru

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Old 08-09-18, 07:08 AM
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Rotary Shack
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Looking For Weber Carb Guru

Hello all,

I'm looking for a Weber carb guru to ask a few questions about my 13B blow-through setup that I am trying to finish up. I was previously working with a local shop, but for reasons I wont mention here, I am in need of alternative assistance.

The engine is a S5 13BT utilizing an upgraded BNR turbo, and a turbo prepped Weber. Fuel system is a stock 20B pump, and a Mallory 4390 fpr. Ignition is provided by a distributor, a single FC leading coil, and two MSD Digital 6-Plus.

Besides whats listed above, I know very little about what else is required to get this engine running. I do not have previous knowledge or experience with carburetors. That said, I am very interested, and willing to learn. I have a good amount of time, and money already invested in this project so Id like to see it through before just going to efi which is something Im personally more familiar with.

The main points Im focusing on right now are:
What fuel filters should I be running?
How the heck does this ignition system work?

Id appreciate any support or advice yall can impart.

Regards,
Edward
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Old 08-15-18, 08:40 AM
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Rotary Shack
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Hey again y'all ,

So I didn't specify in my original post, but the car is a 2nd gen race car. I went out to the garage to look at it again (probably had been about 6 months since I had even looked at it) and verified a few things.

It has a FC trailing coil, (NOT a leading coil).
There's a stock 2nd gen fuel filter.
The distributor is locked.
As the car is a FC , (previously running an EFI engine) all of the fuel lines under the car are OEM.

First thing I want to address is the ignition system, I had done some searching here on the forum and had previously thought my engine builder might have set me up with a 2GCDFIS, but as I verified that the coil is a trailing and not a leading, this can't be the case. So I did some more searching and found a few pictures of setups that are supposed to be similar to mine.

Would be nice to be able to edit my original post, but I'll just post the pictures below.

First up are pictures of my car as it sat several months ago:




Secondly, here is a picture of a setup that my car was patterned after (same engine builder):
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