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grouse_bogun
 Post subject: carbs, whats the diff?
PostPosted: Sat Jun 26, 2004 9:01 pm 
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848cc
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How do you tell the difference between a 1 1/4 and 1 1/2 SU carb?

Bit of a dumbass question...sorry..... :?
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willy
 Post subject:
PostPosted: Sat Jun 26, 2004 9:04 pm 
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The big round chamber on the top is smaller on an HS2 than the HS4. You may have to compare them to find out. Unless their is an easier way.
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grouse_bogun
 Post subject:
PostPosted: Sat Jun 26, 2004 10:23 pm 
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so a 1 1/12 is an HS4 ?
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drmini in aust
 Post subject:
PostPosted: Sat Jun 26, 2004 10:43 pm 
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Yes an HS4 carb is a 1-1/2". As said, the dashpot on top is bigger than an HS2 (1-1/4"), also the mounting holes onto the manifold are diagonal on the HS4.

Size is measured where it bolts to the manifold. Intake hole size is a bit smaller.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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grouse_bogun
 Post subject:
PostPosted: Sat Jun 26, 2004 11:01 pm 
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thanks Kev. I thjink I have a 1 1/2 then.
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