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| what size su should I upgrade to? https://ausmini.com/forums/viewtopic.php?f=5&t=19426 |
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| Author: | 74_VAN [ Sun May 21, 2006 8:55 pm ] |
| Post subject: | what size su should I upgrade to? |
Hey guys, just a small question on what size su i should upgrade to? I have a new fully rebuilt 1100cc 40tho over, all standard except for LCB excractors and a 2" exhaust. Currently it only has a 1 1/4 inch su on it. I was thinking of fitting a 1 3/4 su, not to sure if that will be to large for a fairly standard 1100, and how much it will effect fuel economy? It is my daily driver and dont want it to guzzel fuel. cheers. |
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| Author: | Anto [ Sun May 21, 2006 9:09 pm ] |
| Post subject: | |
I would put on a 1.5" HS/HIF SU. You don't really need the extra size of a 1.75" SU, and it would most likely be more expensive anyway. Using an aftermarket manifold (Mini Spares water heated manifold is good) and a good air filter, it should go pretty well. And then if you want a 1.75" SU later, you can still use the manifold. |
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| Author: | HPDesign [ Mon May 22, 2006 11:52 am ] |
| Post subject: | |
I would suggest a 47' SU (A HIF 95)  SEROIUSLY
but that would be overkill: I ran a 1.75 for a few years on a 1100 it was pretty good. gave a good bottom end that was pretty linear with power/revs I thought is was a nice combo. of course the 1.5 will give less fuel consumption but you only live once and if mini's don't use the last of the fuel I'm sure some V8 will drink it all SLAP ON A 1.75 when it's in tune it should run really well |
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| Author: | Mike_Byron [ Wed May 31, 2006 10:39 pm ] |
| Post subject: | |
I agree - slap on the HIF44 - properly needled and jetted its a very economical carby. The beauty of the SU carby design is that the engine only sucks what air fuel mixture it needs. Other carbies may run out of breath at times but a HIF44 will provide what you need all the way through the range. Graham Russell tells the story of a mildy warm 998 on the engione dyno with a HIF44 and the bell chamber is all the way to the top and the engine is using all it can suck. |
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| Author: | gafmo [ Fri Jun 02, 2006 11:18 pm ] |
| Post subject: | |
I Also Agreee HIF44 Mine has provine to be as good as a Dellotor on a Dyno with very similar Spec's Scout UK Ebay for a manfold and you can also find Combernation Get it Dyno for the rite Needle and your laughing If you have a little more money see how the head is also |
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