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JDM obd0 b16a when does vtec engage?

  #1  
Old 11-27-2011, 11:44 PM
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Default JDM obd0 b16a when does vtec engage?

i havent drivin my car much it needs body work and other things and im just curious when vtec is suppose to engage because i hit around 4900 (with a stock 91 si cluster) and it engages is that normal, if you are wondering it does have a 2nd gen b16a valve cover thanks guys
 

Last edited by theRDRman; 11-28-2011 at 12:22 AM.
  #2  
Old 11-28-2011, 06:01 AM
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The first VTEC engine. Note: All Honda Motor B16A engines are stamped 'B16A' (with no number after the "A" to identify version). Except in Europe, there it was stamped 'B16A1'.

* B16A found in:
* 1989-1991 JDM Acura Integra XSi\RSi" (DA6/DA8)
* 1989-1991 JDM Honda CRX SiR (EF8)
* 1989-1991 JDM Honda Civic SiR (EF9)
o
+ Displacement: 1,595 cc (97.3 cu in) 1.6 litre
+ Compression: 10.2:1
+ Bore: 81.0 mm (3.2 in)
+ Stroke: 77.4 mm (3.0 in)
+ Rod Length: 134 mm (5.3 in)
+ Rod/stroke ratio: 1.745
+ Power: 160 PS (118 kW; 158 hp) @ 7,600 rpm & 15.5 kgm (152 Nm; 112 ftlbf) @ 7,000 rpm
+ Redline: 8100 rpm
+ Transmission: S1/J1/Y1 (4.4 final drive), YS1 (4.266 final drive, cable clutch, optional LSD)
+ ECU code: PR3 (DA6/DA8/EF8), PW0 (EF8/EF9/DA6)
+ OBD0

Looking for VTEC crossover now

EDIT - From what I read, 5200 is the crossover point. Well, it should be if you have the correct ECU for that motor.
 

Last edited by cvcrcr99; 11-28-2011 at 06:03 AM.
  #3  
Old 11-28-2011, 07:06 AM
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ok thanks man , yeah my head is stampled 8/9 so 89 and its pr3-1 so is that the 89 teg im talkin about? yeah on my tach which can be off by 200-300 it engages at 4900, thanks man i appreciate it, and how do i tell which ecu im runnin? and i found out the pr3 head is from a 89 crx or sir civic
 

Last edited by theRDRman; 11-28-2011 at 07:09 AM.
  #4  
Old 11-28-2011, 07:16 AM
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Look at the ECU and tell us the string of numbers and letters located on the side.

ECU Identification
 
  #5  
Old 11-28-2011, 07:29 AM
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it says pr3-003 is that a obd0? and on it from the dealer it says 90 integra xsi jdm , and they have 160hp b16a so basically my 158hp b16a thinks it has 160 stock?
 

Last edited by theRDRman; 11-28-2011 at 07:46 AM.
  #6  
Old 11-28-2011, 07:52 AM
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Yes. Google. Please.

For the other question, HP is not something listed within a ECU. lol 2 HP will not be a big deal anyways.
 
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Old 11-28-2011, 11:08 AM
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i did google it but i dont know why someone wouldnt match the ecu with the head
 
  #8  
Old 11-28-2011, 11:26 AM
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IMO, a PR3 is a PR3. Nothing else would matter when looking at parts when looking at it the way you are.

For example: a p28 D16z6 ECU can run most any motor. Hell, I have one running my H22. Granted, it is chipped, but you get the idea. The problem is when the stock motor has a different sized injectors which screws up fuel tables. Everything else should work off the P28 with the appropriate stepdown/up harness (if needed).

If you are asking why someone didnt match the head with the ECU, it is because you don't have to. Your head says PR3, same as your ECU? Then IMO, they are the same.
 
  #9  
Old 11-28-2011, 11:39 AM
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lol im noobie with ecu' whats a p28 another ecu?
 
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