What size carb would a standard 1275cc metro engine have? Would it be a 1.5" HIF38 or a 1.75" HIF44?? If its the 1.5 would fitting a 1.75 improve the performance without affecting the emissions or causing it to run over-rich?
Cheers
Tom
Carbs
Started by
Purple Tom
, Jun 18 2004 11:53 PM
7 replies to this topic
#1
Purple Tom
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Posted 18 June 2004 - 11:53 PM
#2
Pavel
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Posted 19 June 2004 - 07:39 AM
A metro engine will have a HIF44 if its 1275. If its a 998 metro engine it will have a HIF38.
If the car is a late cooper, it will also have a HIF44, any 1275s before that (1275Gt) will have a 1.5" HS4 carb.
The HIF carbs are a better design and are preferable. A HIF38 will work fine with no problems on a 1275 until you get into high horsepower territory (75-85?). A HIF44 has a horsepower limit that most people wont ever reach...
If the car is a late cooper, it will also have a HIF44, any 1275s before that (1275Gt) will have a 1.5" HS4 carb.
The HIF carbs are a better design and are preferable. A HIF38 will work fine with no problems on a 1275 until you get into high horsepower territory (75-85?). A HIF44 has a horsepower limit that most people wont ever reach...
#3
Pavel
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Posted 19 June 2004 - 07:42 AM
Oh and metro turbos have a HIF44 Turbo carb, which is slightly different (e.g. has the linkages on the other side IIRC).
As for different metros the only thing that differs can be the inlet/exhaust manifold. On most metros (Austin metro, city x etc.) you will find a one piece inlet/exhaust manifold from cast iron.
All MG metros and all Vanden Plaas models will have an alloy inlet manifold and an exhaust manifold that kind of resembles an LCB, so these are of course more preferable.
(Throw in the fact that MG metros and Vanden Plaases have the same larger valve heads, and a better cam, and you will quickly see why those engines are more preferable)
As for different metros the only thing that differs can be the inlet/exhaust manifold. On most metros (Austin metro, city x etc.) you will find a one piece inlet/exhaust manifold from cast iron.
All MG metros and all Vanden Plaas models will have an alloy inlet manifold and an exhaust manifold that kind of resembles an LCB, so these are of course more preferable.
(Throw in the fact that MG metros and Vanden Plaases have the same larger valve heads, and a better cam, and you will quickly see why those engines are more preferable)
#4
Purple Tom
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Posted 19 June 2004 - 06:25 PM
ok pavel, that helps a lot, thank you!!!! :grin:
#5
Purple Tom
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Posted 21 June 2004 - 02:51 AM
another quick question - would a HIF44 with auto choke be any good on a mini??? How does the auto choke actually work??
#6
Pavel
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Posted 21 June 2004 - 06:33 AM
Sorry never heard of an auto choke HIF44. VW Beetles have autochoke carbs IIRC, and they seem to work with no problems but as for a HIF44 autochoke, no idea. Stick with a normal one 
#7
siggy
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Posted 21 June 2004 - 07:16 AM
Can't say that I have ever seen one with an auto choke. But Maestro carbs have a stepper motor for the idle speed.
Why would you want an auto choke?
Siggy
Why would you want an auto choke?
Siggy
#8
Purple Tom
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Posted 21 June 2004 - 09:22 AM
well i don't know really, but there's one advertised on ebay as an 'ex display HIF44E carb with auto choke, fits 1.6 montego 1990 - 1996'. It has what looks like the auto choke device on the r/h side as you look down onto the butterfly. Just wondering if that would fit a mini and work, or whether you need ecu's etc to get it work?
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