Mr. Sinister
Devastation Manager
Tell me what I have.
Thermoquad ID
- Thread starter Mr. Sinister
- Start date
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Tell me what I have.
A 9103S Carter Thermoquad Carburetor.....
Sorry. Had to....
Sorry. Had to....
Mr. Sinister
Devastation Manager
And I bet you are here all week right?
Yep! I think like 77 ish HP 440.....
70 Buster 340
Carbon Footprint
Carburetor Carter# 9103S – B & C – Body – 400 – 1977 - Auto Trans
Model #- year-engine-trans-“F” Federal
Unknown number to me
Main jet .098
Secondary jet .143
Rod # - see list below in the link for sizes of the rod
1-1/2 = primary size
2 = kit to repair/refresh
| 9103 | 77 400 HP AT F (4027761) | 4098 | 5143 | 2211 | 1-1/2 | 2 |
Below is a what is called the “Vaanth” TQ list. He did a good job cataloging the Carter carbs. There is some missing information from time to time and a rare in accuracy or conflict of informational or which I have stumbled on or very little consequence.
It’s a long read but the TQ numbers, as well as others are a decent scroll down. Just keep scrolling….. keep scrolling
A Carter Thermo-Quad Guide
lemondana
BlackDart
I thought the 9103 was a Lean Burn carb, it doesn't have the port for the distributor vacuum advance.
In 1977, that would be the case.
A vacuum port for the distributor can be installed. You’ll just need the fitting, OEM or home made & a drill bit properly sized for your fitting. Something like Indian head gasket shellac can be used to seal the fitting if need be.
A vacuum port for the distributor can be installed. You’ll just need the fitting, OEM or home made & a drill bit properly sized for your fitting. Something like Indian head gasket shellac can be used to seal the fitting if need be.
Mr. Sinister
Devastation Manager
Where would the vacuum port be located?
On leanburn set ups, the distributors vacuum port is located on the computer mounted on the air cleaner.
Adding one to the carb is doing a copy cat to the earlier OEM carb.
Adding one to the carb is doing a copy cat to the earlier OEM carb.
Mr. Sinister
Devastation Manager
But where would it be on a non lean burn carb?
chrgdrt
Well-Known Member
If I recall it’s in the baseplate front going into the primarys.
I have the write up out in the barn, I’ll check it out this afternoon..
I have the write up out in the barn, I’ll check it out this afternoon..
There’s no vacuum port for the distributor on the carb.
It’s all handled by the computer.
The distributor Uses a timed source, the computer uses a full time source IIRC.
Crap - fat fingers - wait for editing
Just copy a older TQ and drill and install it like the OEM has it.
The LB carbs just did t drill the base plate. From memory, everything behind where it is drilled is still there. Once I get back home, I’ll dig up the spare parts bin of TQ’s and post up some pictures. Once you see it, you’ll probably say to yourself,
“OH! DUH!”
No worries, sorry to say it’ll be a while before I get home.
I’ll check back in to see if someone beat me to the punch and if not, I’ll post pictures up.
chrgdrt
Well-Known Member
Here’s a copy of the write up in High Performance Mopar January’92
and here’s a link to a YouTube of it,
and here’s a link to a YouTube of it,
lemondana
BlackDart
I made that modification to one carb, but when I have 40-50 other early TQs to pick from
, it is not worth my time.
, it is not worth my time.
Mr. Sinister
Devastation Manager
Thanks to all who answered the info is greatly appreciated.
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