RB header tune?
#1
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RB header tune?
Recently installed a rb header with the Y pipe collecter (79 12a). Made all the necessary block off plates to spec and installed them. When I started the car up it ran ok until the choke pulled in and the engine died completely. Never had this problem before. It will hold rpms and smoothly. But once off the gas it hardly hunts or stutters before shutting off. Do I need to adjust carb for the new headers? Speed? A/f mixture? Floats?
Last edited by A-bobbrap; 06-03-20 at 12:45 AM.
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A-bobbrap (06-03-20)
#3
Slowly getting there...
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Also make sure your block off plates are fully tightened down and all have gaskets. Sounds dumb but when I did mine the ACV plate on the intake wasn't tight enough and allowed an air leak, leaning it out. The bolts felt plenty tight, but something had bound up the threads. Took it off and re-applied fixed it.
Last edited by Maxwedge; 06-03-20 at 07:38 AM.
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A-bobbrap (06-03-20)
#4
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Also make sure your block off plates are fully tightened down and all have gaskets. Sounds dumb but when I did mine the ACV plate on the intake wasn't tight enough and allowed an air leak, leaning it out. The bolts felt plenty tight, but something had bound up the threads. Took it off and re-applied fixed it.
The following users liked this post:
A-bobbrap (06-03-20)
#5
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Also make sure your block off plates are fully tightened down and all have gaskets. Sounds dumb but when I did mine the ACV plate on the intake wasn't tight enough and allowed an air leak, leaning it out. The bolts felt plenty tight, but something had bound up the threads. Took it off and re-applied fixed it.
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UPDATE: did a full nut and bolt check on everything Ive changed. Then dove into the idle speed and mixture. After some trial and error shes steady at 760 rpm. Can go from full throttle to lift and catches itself perfectly. Might I add the headers are amazing. Sounds great looks great and the throttle response has definitely improved. THANK YOU for all the advice
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