swanny
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| posted on 9/7/09 at 08:57 AM |
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V8 help required
I wonder if any of our V8 guys out there could give me some advice.
i have a standard rover 3.5 with su carbs but splashed out and bought an offenhauser manifold and weber carbs to fit to improve clearance.
a friend is going to fit this for me but i just wanted to ask what else i needed to buy, ie upgraded fuel pump etc?
cheers
paul
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Ivan
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| posted on 9/7/09 at 10:06 AM |
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When I did this mod many (20) years ago didn't change anything in the fuel delivery side. It worked fine as is.
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02GF74
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| posted on 9/7/09 at 01:04 PM |
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to be honest, I'd be surprised if you need to change fuel pump.
most, if not all carbs, have a float chamber to collect petrol that utilises a flaot and needle valve to keep the petrol at a specified lever. It is
aginst this the pump is working against - fit a more powerful pump i.e. delivers fuel at bigger psi you would have the chamber flood so would need a
pressure regulator.
Go with it as is and see how it runs.
You may find the engine drinks more fuel so you may need a larger capacity fuel pupm, same caveat apply for pressure as above.
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robinj66
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| posted on 9/7/09 at 02:14 PM |
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You might find that you need to buy a new thermostat housing with a bypass for the new manifold (it usually comes without one). You will also have to
alter the breather hoses.
Depending on the carb(s) you may need new linkage.
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swanny
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 posted on 10/7/09 at 01:36 PM |
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thanks for that.
sounds like i might just get away with it!
that would make a change.
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