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1 7/8 inch SU's from 72 Datsun 240z 120-130

posted by undrtw on Wed Jul 21 04:51 CST 2004
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last visit: Sat Apr 3 17:37 CST 2010

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Hello, I recently picked up a set of SU carbs from a 1972 Datsun 240z with a 2.4L straight 6. They look to be rebuilt and aren't the flat-top style. They dashpots are held with 3 screws. They have a 1 and 7/8 inch bore and look new compared to my HS6 SUs. With some linkage mods they will bolt right up. If they workout i will port the intakes slightly too match the carbs.

My 64 122s has the original b18 fitted with b20 pistons and a shaved down b20f head ported and polished with bigger valves, hi-ratio rockers, heavier springs, better pushrods, and a race cam fed by the original worn out 1 3/4inch hs6 su carbs with unknown needles. The engine was this way when i purchased the car. It still has the 4 to 1 exhaust, is that bad?

Does anybody have any experience with these carbs?
Are they going to be too big for my motor?
Will low RPM suffer?
Any opinions?

much respect,
curtis m. white
http://thirdchoice.com

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1 7/8 inch SU's from 72 Datsun 240z [120-130]
posted by undrtw on Wed Jul 21 04:51 CST 2004 >

1 7/8 inch SU's from 72 Datsun 240z [120-130]
posted by vvpete on Wed Jul 21 05:13 CST 2004 > V
- 1 7/8 inch SU's from 72 Datsun 240z [120-130]
  posted by someone claiming to be TimC on Wed Jul 21 08:45 CST 2004 > V
- 1 7/8 inch SU's from 72 Datsun 240z [120-130]
  posted by walrus3 subscriber on Wed Jul 21 12:13 CST 2004 > V
  - 1 7/8 inch SU's from 72 Datsun 240z [120-130]
    posted by undrtw on Wed Jul 21 12:38 CST 2004 > V

1 7/8 inch SU's from 72 Datsun 240z [120-130]
posted by matt b on Wed Jul 21 06:29 CST 2004 > V
- 1 7/8 inch SU's from 72 Datsun 240z [120-130]
  posted by undrtw on Wed Jul 21 07:26 CST 2004 > V
  - 1 7/8 inch SU's from 72 Datsun 240z [120-130]
    posted by vvpete on Wed Jul 21 09:05 CST 2004 > V
    - 1 7/8 inch SU's from 72 Datsun 240z [120-130]
      posted by someone claiming to be Toby B on Sat Jul 24 16:25 CST 2004 > V
      - Thanks [120-130]
        posted by undrtw on Mon Jul 26 05:43 CST 2004 > V
  - 1 7/8 inch SU's from 72 Datsun 240z [120-130]
    posted by vvpete on Wed Jul 21 09:05 CST 2004 > V
    - might not have been a 72 [120-130]
      posted by undrtw on Wed Jul 21 09:29 CST 2004 > V
      - might not have been a 72 [120-130]
        posted by matt b on Thu Jul 22 04:09 CST 2004 > V
        
        might not have been a 72 [120-130]
        posted by undrtw on Thu Jul 22 05:47 CST 2004 > V
        
        might not have been a 72 [120-130]
        posted by matt b on Thu Jul 22 07:19 CST 2004 > V
        
        might not have been a 72 [120-130]
        posted by undrtw on Thu Jul 22 07:49 CST 2004 > V
        
        might not have been a 72 [120-130]
        posted by Phil S. on Thu Jul 22 11:27 CST 2004 > V
        
        air filter [120-130]
        posted by undrtw on Thu Jul 22 12:38 CST 2004 > V
        
        air filter [120-130]
        posted by Phil S. on Thu Jul 22 13:09 CST 2004 > V
        
        Any body use an Airbox? [120-130]
        posted by undrtw on Fri Jul 23 05:29 CST 2004 > V
        
        Oh yes. [120-130]
        posted by Phil S. on Fri Jul 23 07:59 CST 2004 > V
        
        And the filter [120-130]
        posted by Phil S. on Fri Jul 23 08:00 CST 2004 > V
        
        And the filter [120-130]
        posted by undrtw on Fri Jul 23 08:34 CST 2004 > V

1 7/8 inch SU's from 72 Datsun 240z [120-130]
posted by walrus3 subscriber on Wed Jul 21 08:04 CST 2004 > V

1 7/8 inch SU's from 72 Datsun 240z [120-130]
posted by hans on Wed Jul 21 11:31 CST 2004 > V
- Any recommendations on Exhaust Size... [120-130]
  posted by undrtw on Wed Jul 21 11:49 CST 2004 > V
  - Any recommendations on Exhaust Size... [120-130]
    posted by hans on Wed Jul 21 12:03 CST 2004 > V
    - Any recommendations on Exhaust Size... [120-130]
      posted by undrtw on Thu Jul 22 05:55 CST 2004 > V
  - Any recommendations on Exhaust Size... [120-130]
    posted by Phil S. on Wed Jul 21 13:13 CST 2004 > V

1 7/8 inch SU's from 72 Datsun 240z [120-130]
posted by someone claiming to be mjamgb on Fri Jul 23 11:57 CST 2004 > V
- D'oh, meant RICHER needle [120-130]
  posted by someone claiming to be mjamgb on Fri Jul 23 11:57 CST 2004 > V
- needles [120-130]
  posted by undrtw on Fri Jul 23 12:37 CST 2004 > V
  - HIF 7 [120-130]
    posted by someone claiming to be mjamgb on Mon Jul 26 09:54 CST 2004 > V

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Volvo RWD 120-130 Forum

1 7/8 inch SU's from 72 Datsun 240z 120-130