1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

gsl-se with 45 dcoe rats nest advice

Old Jun 26, 2008 | 12:06 PM
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KS gsl-se with 45 dcoe rats nest advice

ok, ive got the tutorial, but what do i do if i have a 13B? Its all for a 12A. I'm going carb, so obviously the EFI doesnt need to work. Advise? help? what can i remove? what do i need to plug?
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Old Jun 26, 2008 | 01:32 PM
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putting on a dcoe? do you have emissions testing? remove it all. if the dcoe is for a 12a then you will need a different manifold, and new jets, and air correctors, probably new emulsion tubes and maybe new ventures, maybe. good luck, and be sure to get a wideband o2 sensor and guage.
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Old Jun 28, 2008 | 12:28 PM
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i dont have emissions where do i run my vacume advance for the dizzy to????
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Old Jun 29, 2008 | 12:58 PM
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on my intake for my weber i got 2 vac nipples. one for my dizzy that has a T. then the other split into a T for the oil. you might have to drill and install your own. you should also have a larger barb for your brakes. i just did an install yesterday for mine. its cake.
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Old Jun 29, 2008 | 03:27 PM
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you dont need vaccuum advance with aftermarket carb. leave the dizzy ports open tho.
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Old Jun 29, 2008 | 04:38 PM
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Yup, thats how I run mine. got a port for the brakes, had to drill a couple for the omp lines.
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Old Jun 29, 2008 | 05:36 PM
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Cool 6 port 13b, 48mm Weber and vac dizzy.

Originally Posted by wackyracer
you dont need vaccuum advance with aftermarket carb. leave the dizzy ports open tho.
Does this apply to operating 5th and 6th ports on a GSL-SE motor?
Does the dizzy have a function that corresponds to the port operation?
Just checking.
Sorry for jacking the thread.
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Old Jun 29, 2008 | 07:51 PM
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I always run 6port motors without sleeves.
dizzy does not control the actuators
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Old Jun 29, 2008 | 08:10 PM
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Originally Posted by wackyracer
you dont need vaccuum advance with aftermarket carb. leave the dizzy ports open tho.
I did not know this........ makes my build easier
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Old Jun 29, 2008 | 09:06 PM
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wacky's got this one covered.. you da man
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Old Jul 3, 2008 | 10:11 PM
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Does a weber provide any real performance improvement over the stock FI? I thought it was pretty much a wash.
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Old Jul 5, 2008 | 09:42 AM
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To a point it a carb setup does provide an advantage since the ecus are 'dumb' and cannot learn or be tuned to make any adjustments. Only way to get around that is to go with an aftermarket engine management system which has the capability of having adjustments made through a laptop. If one were to install a MegaSquirt system it could probably be tuned for a more precise power curve than any carb setup.

With the MS system being the least expensive of the aftermarket systems, it might actually be cheaper to go that route than buyinmg an new Weber IDA setup, if one has the ability/patience/know how, to install and tune the MS system.
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Old Jul 5, 2008 | 09:52 AM
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Originally Posted by josh20
ok, ive got the tutorial, but what do i do if i have a 13B? Its all for a 12A. I'm going carb, so obviously the EFI doesnt need to work. Advise? help? what can i remove? what do i need to plug?
Where in Kansas are you? I'm an hour north of KC in case you need help or want to bring it up for the swap. PM me if interested.
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