TwinTurbo.NET: Nissan 300ZX forum - I wouldnt mess with them
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Subject I wouldnt mess with them
     
Posted by -Grimm- on April 17, 2017 at 1:12 PM
  This message has been viewed 503 times.
     
In Reply To Block water jacket ports posted by 1308cats on April 16, 2017 at 07:41 PM
     
Message If you want to improve cooling try removing the casting flash in the main water pump passage

Linky

You can go deeper than they show, I got a 12" carbide deburring tool and smoothed the entire passage front to back. Obviously should be cleaned out really well.

As far are removing your thermostat, you will run into multiple problems. Your engine will take much longer to heat up (reducing efficiency) and when warm your water will not have enough residence time in the radiator to cool properly, which can lead to overheating.

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1992 300ZX NA 5 Sp KH6 (Dead)
1990 300ZX NA Auto 2+2 732 (Dead)
1991 300ZX TT 5 Sp TH1 (Stock)
1990 300ZX TT 5 Sp KH6 (Stock Turbos) (Est. 400 HP)
1990 300ZX TT 5 Sp 326 (GT600R) (Est. 600 HP)
2004 G35 Sport 6MT (DD)
2008 Honda Civic (DD)
2014 Nissan Murano (DD)
1969 Chevy C10 383/TH350 (Toy)
1969 Chevelle LS1/T56 (Toy)

     
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