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| Best Carb https://www.ausmini.com/forums/viewtopic.php?f=2&t=72738 |
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| Author: | nathanm [ Tue Aug 30, 2011 7:07 pm ] |
| Post subject: | Best Carb |
just trying to figure out what carb would suit my engine best it is a 1100s motor pretty well stock as far as I'm aware so what would give me the best performance (without body mods)? |
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| Author: | gafmo [ Tue Aug 30, 2011 7:24 pm ] |
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1 1/2 SU would be a good starting point. No mods required |
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| Author: | drmini in aust [ Tue Aug 30, 2011 7:25 pm ] |
| Post subject: | |
Either an HIF44 or an HS6 SU, on either an MG Metro or Minispares manifold. |
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| Author: | Davo111 [ Tue Aug 30, 2011 7:26 pm ] |
| Post subject: | |
They originally came out with 1 1/4 SU, single, so the engineers that designed the motor back in the late 60s must have known that would be sufficient for normal operation. 
Twin 1 1/4 SU was always the first mod for a little more power, but the single is just fine.
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| Author: | drmini in aust [ Tue Aug 30, 2011 7:32 pm ] |
| Post subject: | |
Nope the 1100S (1275) all had an 1-1/2 stock, not 1-1/4... |
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| Author: | Morris 1100 [ Tue Aug 30, 2011 7:37 pm ] |
| Post subject: | |
I think the main reason for fitting twin carbys on the improved models was appearance. Sure it will improve performance over a single 1¼" but the main thing was how it was perceived by the public. A 1¾ will perform as good as two 1¼ but it will not look like it does. |
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| Author: | nathanm [ Tue Aug 30, 2011 7:54 pm ] |
| Post subject: | |
yeah cool i have a set of twin 1 1/2's that need to be rebuilt and was just wondering whether to stick with these or go down the hif44/hs6 route as what i have heard is that they are just as good |
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| Author: | drmini in aust [ Tue Aug 30, 2011 8:08 pm ] |
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Rebuilding twin SUs properly (if paying for it) costs serious $$$ now. And IMO twin 1.5s are overkill on an otherwise stock 1275. |
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| Author: | 1275LS [ Tue Aug 30, 2011 8:54 pm ] |
| Post subject: | |
I'm not an expert but my 1275 hoots along stock with a HS6. I gather it is a lot simpler than trying to tune twin carbs too. |
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| Author: | 1098 [ Tue Aug 30, 2011 9:33 pm ] |
| Post subject: | |
by far the ultimate carburettor is a Weber. The SU supposedly will wear and give you great dramas after 10-20,000km. Not worth the hassle. Or something... 
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| Author: | drmini in aust [ Tue Aug 30, 2011 9:45 pm ] |
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1098 wrote: by far the ultimate carburettor is a Weber.
The SU supposedly will wear and give you great dramas after 10-20,000km. Not worth the hassle. Or something... Cheer up... 
I don't hate SUs... Here's what's going back on my 1412 when it's in the wife's van... HS6, ported Minispares manifold with 20mm spacer. 
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| Author: | mattsmadmini [ Tue Aug 30, 2011 9:58 pm ] |
| Post subject: | |
1098 wrote: by far the ultimate carburettor is a Weber.
The SU supposedly will wear and give you great dramas after 10-20,000km. Not worth the hassle. Or something... 
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| Author: | min16i [ Wed Aug 31, 2011 9:59 am ] |
| Post subject: | Which Carb? |
Hi All, My two bob's... although I love the twin's on my Landcrab I'm going to put a single on my Mini, fiddling with one set of twin's is enough 
Ian |
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