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#121
12-08-2018, 04:57 PM
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Update:
Ran the carb on my truck and made adjustments to accel pump,bypass air valve and mixture screws to achieve about 800 RPM in park and pulling about 21"Hg of vacuum on my truck. Back onto the car.... Hooked up a mech oil pressure gauge and from simply cranking about 30 psi.... Wants to catch but maybe too cold.
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Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#122
12-09-2018, 09:59 AM
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I did run it again last night for very short times.
Not long enough for it to build any heat . I think I hear the old noise I know too well with stock Pontiacs...Rod knock or pin. Like I said it has not run on it's own long enough...I may have to replace the fuel pump... Weird it was pumping well when I cleared the tank of the Beer it was brewing. I put a filter before the pump before I started cranking it. Carb runs fine on my truck so maybe new plugs & a pump.
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Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#123
12-09-2018, 04:56 PM
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Major Win Today!
Test fuel press..fine Cyl press test cold Change thermostat & added small bypass hole,added coolant One shot of starting fluid That was all it need! Run's on it own and I have video...have to learn how to load that. Idle speed and I had set it running on my truck so dist in car is out. I've been spraying the base for a week now with PB blaster..no dice can't budge it...
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Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#124
12-09-2018, 05:46 PM
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Sooo... throttle shafts on original carb are stuck?
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1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down... 
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#125
12-09-2018, 06:14 PM
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No, I got it under control but dist will not budge.
I found on drivers side small choke counter weight was hung up as a wire spring may be broke. I have it idling about 800 rpm, smooth...very happy!
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Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#126
12-10-2018, 06:01 PM
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Warmed it up then proceed to pour/flogg 4 cans of Seafoam right down the carb.
I stalled it out intentionally on the 3rd can to soak in a bit. Finished 4th can an let it run awhile...I'm pretty sure I used my 1st 5 gallons of 93! Next time I have a few mins I'll retest cylinder pressure to see if any gains were made on #'s 3 & 8 cylinders
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Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#127
12-11-2018, 07:09 PM
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Seafoam did the trick!
I checked the two bad cylinders that were under 100 psi and they are now 150 psi. Nice! Anyone know if they did nylon tooth timing gears in 67'? I'm thinking once car is up change valve seals & check to see if Timing chain is intact. I may build a nice custom 800 cfm Qjet....maybe headers......lol
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Carburetor building & modification services Servicing the Pontiac community over 20 years Last edited by shaker455; 12-11-2018 at 07:57 PM. |
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#128
12-11-2018, 09:19 PM
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That's mint!
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The difference between inlaws and outlaws? Outlaws are wanted |
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#129
12-11-2018, 11:51 PM
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Nylon timing gear in 1967....yup far as I know. Guy I carpooled with forever had one on his 67 Cat convert (original).
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#130
12-12-2018, 01:13 PM
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I think your right as I also posted same in street.
Looks like as early as 64' In goes the camera!
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Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#131
12-12-2018, 03:56 PM
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If you've got a smart phone, you could probably use the camera on that to give you an idea of what's in there. Unless of course you've already got one of those bore scope units.
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#132
12-12-2018, 07:09 PM
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I have the scope
Next adventure.....The Brakes!
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Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#133
12-12-2018, 07:23 PM
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Quote:
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1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down...
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#134
12-12-2018, 07:42 PM
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That's right
I can tell you the system is dry & all new stainless lines, Also, before I moved the car @ the barn I checked each wheel and they were completely free like they were backed off.
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Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#135
12-12-2018, 09:34 PM
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If you could post a pic of the timing gear when you scope it, I'd be interested in seeing that.....if it's not a problem. Thx.
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#136
12-14-2018, 02:11 PM
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I may have got lucky!
Maybe drive this weekend?
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Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#137
12-14-2018, 02:19 PM
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I can machine those drums for you...the drive might take a while...
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1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down...
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#138
12-14-2018, 03:54 PM
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They already have been.
Slightly rusty on edges from sitting,...all clean now..but thanks! I have two Edelbrock PB4's one is a square bore with both patterns. I'm thinking it's useless so I'm going to machine the plenum to accept a spread bore Qjet. Then weld in new pieces and final machine. Also remove exhaust crossover.
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Carburetor building & modification services Servicing the Pontiac community over 20 years Last edited by shaker455; 12-14-2018 at 04:29 PM. |
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#139
12-14-2018, 07:41 PM
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Looks like I'll be "yard bombing" around in the GP tomorrow
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Carburetor building & modification services Servicing the Pontiac community over 20 years |
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#140
12-15-2018, 02:53 PM
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Quote:
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1977 Black Trans Am 180 HP Auto, essentially base model T/A. I'm the original owner, purchased May 7, 1977. Shut it off Shut it off Buddy, I just shut your Prius down...
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