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Does your turbo dragster "buck" at constant low rpm?

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Old Nov 6, 2009 | 09:57 AM
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Mikey3000's Avatar
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Default Does your turbo dragster "buck" at constant low rpm?

For example: you're driving back to the pits in 2nd gear at 2-3000 rpm. My **** bucks like a damn bronco. It's annoying as **** and i wonder if there's any reason it does that.
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Old Nov 6, 2009 | 10:01 AM
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Default Re: Does your turbo dragster "buck" at constant low rpm?

If you have some big ridiculous non vtec cams then it can do that and if you have the old Bosch 160lb injectors it can do that. Otherwise, it should not and is probably a tuning issue.
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Old Nov 6, 2009 | 10:16 AM
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Default Re: Does your turbo dragster "buck" at constant low rpm?

it has stock cams and 1600cc injectors.
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Old Nov 6, 2009 | 10:23 AM
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Default Re: Does your turbo dragster "buck" at constant low rpm?

Yeah, when it's bucking like that the a/f ratio is probably all over the place, right? You're probably right in the middle of the very non linear part of the injector flow. The best thing you can do is run it overly rich there and it will smooth it out a little.
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Old Nov 6, 2009 | 11:03 AM
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Default Re: Does your turbo dragster "buck" at constant low rpm?

I was chasing this problem for the longest time
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Old Nov 6, 2009 | 11:08 AM
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Default Re: Does your turbo dragster "buck" at constant low rpm?

cool, thanks for the info.
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Old Nov 6, 2009 | 11:14 AM
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Default Re: Does your turbo dragster "buck" at constant low rpm?

Mine was doing that, re tuned it and it dont anymore. I have 1680cc
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Old Nov 6, 2009 | 01:09 PM
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Default Re: Does your turbo dragster "buck" at constant low rpm?

No wideband hooked up? It's most likely a tuning issue
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