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intake manifold with radiator hose run through?
https://www.ausmini.com/forums/viewtopic.php?f=2&t=29796		 Page 1 of 3
Author:  andbat [ Wed Mar 28, 2007 10:57 pm ]
Post subject:  intake manifold with radiator hose run through?
those intake manifolds with the radiator hose that runs through them. do they increase the heat of the mixture going into the mini alot?

does anyone have any spare ones hanging around?
Author:  Mick [ Wed Mar 28, 2007 11:10 pm ]
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They're meant to prevent carburetor icing in cold climates. And cold means really cold. Heating a mixture does not make your car go faster otherwise.
Author:  mad-mk1 [ Wed Mar 28, 2007 11:54 pm ]
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i have one on the mk1 project, it ws on the motor, and it looks kool, so its staying

Image

eye candy lol, its filthy though nice and blingy now though
Author:  andbat [ Thu Mar 29, 2007 3:19 pm ]
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well my engine is running to cold and i need some way of warming it up a bit.

yes she is running to cold.
Author:  Mick [ Thu Mar 29, 2007 3:28 pm ]
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nothing to do with the intake. Try a mixture tuneup, ignition settings and if it is too cold (coolant temperature cold that is) is there a thermostat fitted?

These manifolds are for climates where the pressure drop accross the butterfly is enough to freeze the manifold up with ice.
Author:  HPDesign [ Thu Mar 29, 2007 3:59 pm ]
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their is a marginal increase to be made by heating the intake and increasing it's temperature and mass. Probably no enough to notice in an a series.

if your cars too cold start with your cooling system. make sure it's full of water and the sensors working otherwise change the thermostat
Author:  h0nk [ Thu Mar 29, 2007 4:23 pm ]
Post subject: 
HPDesign wrote:
their is a marginal increase to be made by heating the intake and increasing it's temperature and mass. Probably no enough to notice in an a series.


But that's really only due to better atomisation isn't it?
Author:  Mick [ Thu Mar 29, 2007 4:32 pm ]
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Heated air thins out. Bernoulli's principle.
Author:  Anto [ Thu Mar 29, 2007 4:44 pm ]
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A water heated inlet manifold will help prevent carburettor icing. If your car is running cold, trying installing a hotter thermostat - an 84 or 88.
Author:  Mike_Byron [ Thu Mar 29, 2007 4:45 pm ]
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I use one of those water through manifolds - makes no difference in summer (at least not any noticeable difference) but makes a big big difference on those monster frost mornings.

Its imperative that a good thermostat is fitted though, so there is warm water.

Just on thermostats for a moment. Dont buy and fit a cheap thermostat and say "oh well thats that". Most of them are rubbish and many degrees off their stated value. They also seize fairly quickly. Spend a few more dollars and get a good one. Then check it BEFORE you fit it by boiling it and checking the opening closing temperatures with a temperature probe or thermometer.
Author:  rehab1964 [ Thu Mar 29, 2007 4:49 pm ]
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I've read this post with interest as I'm about to fit an 1'3/4 SU to my warmed over 1275 and was told only to do so on a water heated manifold - I'm guessing by the direction of this thread that's not necessarily true?
Author:  Mokesta [ Thu Mar 29, 2007 5:02 pm ]
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I've tried both systems on my car. With water connected to the manifold, the car idles much better on cold winter nights (Brisbane cold so about 10 degrees). There is far less manifold wetting so the idle doesn't start high then drop off after a while at the lights.

With the water connected there is a slight increase in pinging on hot summer days. (Brisbane again so about 30 to 32 and humid)

I have disconnected the water through the manifold because mokes are too cold to drive when it's 10 degrees out so who cares about how well it runs!

FYI my car runs an 87 deg thermostat, 1/75 HIF with bakerlite spacer, MG metro alloy inlet manfold and has a ported head.
Author:  VicMini13 [ Thu Mar 29, 2007 5:06 pm ]
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Use to have a non-heated manifold on a 1380 - didn't cause any problems until heading home late one extremely cold night.

When I went to back off to exit the freeway after sitting on 70ish mph for 15-20 minutes nothing happened. :shock: Lucky the freeway kept going and I was able to pull back on and play with the throtle for a while until it became un-stuck and the car finally slowed from it's 70ish speed. :oops:
Author:  Morris 1100 [ Thu Mar 29, 2007 5:57 pm ]
Post subject: 
Mick wrote:
These manifolds are for climates where the pressure drop accross the butterfly is enough to freeze the manifold up with ice.
Most of Australia. :wink:
Author:  Mike_Byron [ Thu Mar 29, 2007 6:21 pm ]
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Certainly here in the Central Tablelands of NSW where we are 700 metres ASL and our lowest overnight temp last winter was -16 C.

We repeatedly had to blank off sections of the radiator on the crummydore and the tonner to get the temperature up in the early mornings. The tonner especially as it shares air with the atmosphere and it is no fun driving it cold watching your fingers ice up as you drive. Fortunately it only takes a couple of K's to warm the heater.
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