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Pontiac - Boost Turbo, supercharged, Nitrous, EFI & other Power Adders discussed here. |
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#21
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If you need any help with tuning the carb let me know...
Good luck !
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My Half AN Injun..... |
#22
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Charlie, I got the idle good and wot is responding good but the intermediate circuit is super rich when driving. I pulled the Intermediate air bleeds completely out and it helped but still too rich. My next step is to drill and tap a reduced jet in the T-slot passage and see if I can't get a good result there. I ordered a bunch of brass set screws that I will drill out orifices. They should come in today!
Do you see anything I am missing? This is a C&S 1150 dominator style carb.
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67 Firebird 3440 lbs, Pump gas 537 IA2, tiger heads, 4.86 rear, 32 x 17.5's, full interior, 4 mufflers, street shape 1.36 60', 6.11@113.42 1/8 mi. 5.67@123 on small shot. |
#23
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Quote:
I would need to see what you have to determine what to change. I will say assuming you're talking about idle air bleeds , you shouldnt have taken them out. For e85 they should be in the area of .063 and .067
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My Half AN Injun..... Last edited by charlie66; 07-01-2019 at 03:37 PM. |
#24
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The Idle air bleeds are still in, I think they are #25.
I had to drill out the IFR from .038 to .042 to richen idle up. It is good. At about 2000 RPM's the A/F starts to go rich and by 3000 the motor starts to flutter from being too rich. I pulled the Intermediate air bleeds (3 circuit carb) and it did help but did not solve the problem. I think the transfer slot is delivering too much fuel at this RPM. I can orifice it down.
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67 Firebird 3440 lbs, Pump gas 537 IA2, tiger heads, 4.86 rear, 32 x 17.5's, full interior, 4 mufflers, street shape 1.36 60', 6.11@113.42 1/8 mi. 5.67@123 on small shot. |
#25
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Drilling the IFR was a good move. The e85 dominator i did .043 worked best . I dont know much about 3 circuit carbs so if there really different, then my opinion is way off. But .025 is way too small for idle air bleeds for a 2 circuit . Should be more like .063 Did you get my PM Steve ? Im pretty sure i know what the problem is. If you are open to a test let me know ..
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My Half AN Injun..... |
#26
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6.98 @ 199mph 4.53 @ 164mph |
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