XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

Performance Boost for 4.0

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  #1  
Old 05-01-2013, 07:56 AM
RonaldP's Avatar
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Default Performance Boost for 4.0

Has anyone undertaken some mild improvements to the AJ16?

I don't want to build a street racer, just a little more punch to
it. I have the 5 degree advance bracket but everything else is
stock.
 
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  #2  
Old 06-14-2013, 06:16 AM
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Ron,

Did you fit the bracket? What were the results?

Thanks,

Allan
 
  #3  
Old 06-14-2013, 06:51 AM
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Without getting too deep into the engine, you could try freer flowing exhaust and air intake. Those might get you a couple of horses.
 
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Old 06-14-2013, 10:13 PM
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The bracket was on the car when I bought so I don't know what it was like before it was put on.
 
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Old 06-14-2013, 10:22 PM
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throw a huge turbo on it. sounds like a plan to me
 
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