Quote:
Fish'n Jim wrote:
Measure the diam with the inserts and see if it's 15/16".
Since it's cast symmetric, they had to use inserts/sleeve to reduce the bore. From the hammer marks, it's was most likely hand formed, not pressed, but I wouldn't rule it as "homemade".
I don't know this model, but if called for in the specs, it probably matches the advance curve, etc to provide the correct fuel flow. This is carburetor's "magic era". Didn't get them figured out til about the late 60s. It may not perform well with larger stock secondaries, if the cam isn't designed for that. ie, a smooth riding family car vs max HP.
Unless you want to get into a complete performance redo, I'd leave them, if it was working OK before. I suspect if you take them out you might have to re-jet, etc. to correct the fuel mix.
Not a biggie, per se. The change in flow is minor.
Could even be some "economy" gadget they hawked back in the day. Lots of things happen over that many years.
Hey Jim! I apologize to you as well! I totally spaced on getting back to everyone.
Unfortuanly I got the carb together right after my last reply. I don't think I'd be able to accurately measure them as of right now.
Yeah, I agree that they look hand formed. I don't know if I mentioned it before or not, but the receipts found in the glovebox show that the carb has been rebuilt at least three or four times since the mid seventies. Maybe one of those shops performed the modification.
I did leave 'em in there. I figured it couldn't hurt because the car probably ran before in it's current configuration.
Although, whoever rebuilt it last, or got into it last, did a HORRIBLE job at rebuilding it. Every single setting was out of spec (some by a lot). The piston in the starter switch housing was upside down, the thermostat plate (choke baffle) was missing, along with a few linkage washers. Also, a bunch of screws were swapped around and in the wrong places.
So, who knows how well she actually ran before. I guess we'll find out soon enough.
Anywho, thanks for the info and sorry again.
-Chris
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