Pdlewis
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| posted on 11/4/08 at 07:17 PM |
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Fuel Return Line
This sounds like a silly question to me bu going to ask it any way.
Is it ok to run say a 10mm fuel line to feed the engine and have a 6mm return? Its a 02/03 R1 engine
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NeilP
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| posted on 11/4/08 at 08:25 PM |
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Probably not but they are usually the same size - Most people use 8mm so the 6mm return might be a little small?...
What BHP are you expecting and what are you on - injection or carbs?
If you pay peanuts...
Mentale, yar? Yar, mentale!
Drive it like you stole it!
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MikeRJ
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| posted on 11/4/08 at 10:21 PM |
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Not a good idea, the return should be at least as large or preferably larger than the feed since it is a low pressure line. Any restriction here will
increase the fuel rail pressure.
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matt_claydon
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| posted on 12/4/08 at 03:00 AM |
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quote:
Originally posted by MikeRJ
Not a good idea, the return should be at least as large or preferably larger than the feed since it is a low pressure line. Any restriction here will
increase the fuel rail pressure.
Agreed, a restrictive return will have the same effect as turning up the fuel pressure regulator. May be negligible effect but hard to say - not worth
the risk in my opinion. Any particular reason not to just use 8mm like most people do?
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Bluemoon
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| posted on 12/4/08 at 07:14 AM |
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On a carbed sierra the return is smaller than the feed! I would stick with the same size for simplisity anyway (and one real of 8mm copper will do
both)..
Dan
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MikeRJ
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| posted on 12/4/08 at 12:28 PM |
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quote:
Originally posted by Bluemoon
On a carbed sierra the return is smaller than the feed!
Then again a carb is not sensitive to fuel pressure, as long as it's low enough for the needle valve to operate correctly.
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