Lozer Posted April 19, 2009 Report Share Posted April 19, 2009 can i just plug up the hose that goes in???? Quote Link to comment
sssr20det510 Posted April 19, 2009 Report Share Posted April 19, 2009 what motor and where does it go to? Quote Link to comment
Lozer Posted April 19, 2009 Author Report Share Posted April 19, 2009 l20b and it comes from an outlet on the passenger side of the motor through a metal tube to the base of the carb. Quote Link to comment
Skib Posted April 19, 2009 Report Share Posted April 19, 2009 my SU's had that, its just to warm up the mani when its really really cold outside, just like coolant lines that go threw a throttle body. personally I blocked off the ones for my old SU's and shaved the water passages off my throttle body since it dosent really get cold enough here to need them Quote Link to comment
Lozer Posted April 19, 2009 Author Report Share Posted April 19, 2009 sweet make everything a little cleaner too. Quote Link to comment
datzenmike Posted April 19, 2009 Report Share Posted April 19, 2009 The warmed water actually flows from the head out through the runners and down to the lower rad hose. I would cut the hose somewhere handy and place a suitable bolt in each end and clamp it to shut off flow. This way it can be put back into operation in cold weather or if you notice mileage and drive ability suffering. Datsun did this for a good reason. The water passage also helps keep the manifold 'cooler' on hot days with the exhaust manifold so close beside it. Think about it. Quote Link to comment
ggzilla Posted April 19, 2009 Report Share Posted April 19, 2009 Yes, for maximum fuel economy, you'll want to leave it stock. The carburetor is jetted for a very specific manifold temperature and will run alternately slightly rich or slightly lean if you don't run the coolant throught it. But you won't notice much if any problem if you block the line. Quote Link to comment
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