Krueggs81
Future Icon
Bend'em at both ends
Posts: 98
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Post by Krueggs81 on Jan 20, 2013 21:11:31 GMT -5
Looking at jetting a Rochester 2 Barrel Carb. How do you know what size of a jet to use. Its going on a mild built 318. Looking for insight on what size jets to use?
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Post by jugulator on Jan 24, 2013 16:24:17 GMT -5
lately,,, nobody wants to give carb advise ,,,,
It turns into a drama thread,,,, ;D
....................lenny
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Post by scottgropp on Jan 24, 2013 16:27:37 GMT -5
There is no simple answer. Jets are just one part of the different fuel distribution elements a carb uses. Idle, power, accelerator systems, among others, put fuel in with the incoming air. Unless you can specifically say how those are setup, and the rest of the setup you have (gear, trans, engine specs), there is no way to offer that advice on here, and do it accurately.
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ynotracing
Feature Winner
Need time to work on my 74 LAC damnit
Posts: 3,629
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Post by ynotracing on Jan 24, 2013 16:38:25 GMT -5
just buy from gropp I have one thats 5yrs old and still works like a champ on the mouse motor it runs on good money spent for piece of mind
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Post by scottgropp on Jan 24, 2013 16:53:50 GMT -5
Thanks, but it wasn't my intent of the post to attempt to sell him a product. I was merely attempting to explain why an easy question doesn't have an easy answer.
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Post by Comet Cyclone on Jan 24, 2013 20:02:10 GMT -5
I agree. Heres a carburetor tip don't be monkeying with everything but the carburetor at the same time...
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Post by CHUNKY MONKEY 13 on Jan 24, 2013 21:32:55 GMT -5
Any who what needs to done to a 2jet to make i perform better for derby use. It will be on a very mild 305. comp 268 cam, wieand intake, upgraded hei. 4:88 geared 9in rear
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Post by jugulator on Jan 25, 2013 10:52:29 GMT -5
Looking at jetting a Rochester 2 Barrel Carb. How do you know what size of a jet to use. Its going on a mild built 318. Looking for insight on what size jets to use? I saved some specs that i wrote down from some old we posts... I think these were for a stock SBC,,,In fact,, I don't remember what jets i'm using in our 2 jet,,, 305.........58 to 64 jet 350.........68 to 74 jet don't take these #s as facts,,,, It may help ya,,, depends how you drive,,,, ratio,, ya know... .....................lenny |
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ynotracing
Feature Winner
Need time to work on my 74 LAC damnit
Posts: 3,629
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Post by ynotracing on Jan 25, 2013 12:13:15 GMT -5
u need a few thing when asking this ? motor, heads,cam, trans, rearend gear also tire size and driving style(sandbagger-wide open) style of car its goin (old iron-new style)
from what i hear u need all these to be able to tune it in exactly for your car
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Post by smittybuilt on Feb 5, 2013 22:16:27 GMT -5
just trying to find someone that can build a good carb to run in the derby
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Post by redneckracing12 on Feb 5, 2013 22:39:54 GMT -5
baldwin
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Post by baldwinracing on Feb 5, 2013 23:41:51 GMT -5
We have a very strong 4412 in gas, E-85 and alcohol, they start at 440.00 custom built and tuned for your engine.
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Punisher 66J
Feature Winner
F**K WELD CLASS, STOCK IS FOR TRUE DERBY DRIVERS!!!
Posts: 3,789
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Post by Punisher 66J on Feb 5, 2013 23:45:39 GMT -5
For what motor. I like Holley.
Team Seek and Destroy
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ron17t
Feature Winner
Posts: 1,180
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Post by ron17t on Feb 5, 2013 23:50:08 GMT -5
Competition Carburetion in Sparks,NV.He does mail order,he's the best carb guy there is.I've won both derbies and stock car races with his stuff.
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Post by smittybuilt on Feb 6, 2013 0:04:40 GMT -5
it in a Sbc
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