Engine & Internal Chat about beefing up your engine's insides here.

f20b

  #1  
Old 01-24-2012, 12:56 PM
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Default f20b

i know theres a member here runnin a f20b with nitrous in a 97, but its pretty much an h22 swap as far a mounting and stuff right?
 
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Old 01-24-2012, 02:44 PM
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mounting yes, except easier because the f20b driver side mount is the same as the accord where as the h22 driver side mount is different.

Wiring should be easier for you than me since your car is obd1. Just use your accord harness and cut and splice as necessary and run a chipped obd1 ecu or if you really have to get a P13 h22 ecu. But I would recommend getting a F20b map as they are a bit different than h22.
 
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Old 01-24-2012, 03:20 PM
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so just use my harness. hu.
so i could use all my stock mounts?
will an h22 map run the engine for a while, cause i have someone that can tune it.
and the wiring, do you know of what exaclty i'll need to add and splice, since the engine is obd2 will there be a knock sensor and such?
 
  #4  
Old 01-24-2012, 03:59 PM
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Yes you can use your stock mounts.

An h22 map will run it, but I would eventually get a tune.

As I have never dealt with an OBD1 accord harness I can't say for sure, but it won't be difficult.
 
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Old 01-24-2012, 05:26 PM
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h22 p13 ecu will run the f2bo like total crap.
f20b has tad bit higher c/r and the type s cams. a p13 is not made to run type s cams let alone 11:1 c/r.
A tune is a must I just helped my boy swap a f20b in his cb7. the p13 ecu sucks big time. You WILL need to get a p72 and get a tune. You will eventually blow that engine running it hard on a p13. Driving around and shifting at like 2.5k is fine but anything over that the tune is a must.
 
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Old 01-25-2012, 01:33 AM
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so it would obvioulsy just be better to get the ecu from hmotorsonline.com and run the stock ecu, then buy a chipped p72 when i want a tune?
 
  #7  
Old 01-25-2012, 04:08 AM
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The problem you will run into is the stock ECU is OBD2 while your car is obd1. I'm sure a chipped ECU would be about the same price as the stock one anyways.
 
  #8  
Old 01-25-2012, 04:38 AM
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couldnt i run a conversion harness?
the only reason i wanna stay with the stock ecu is cause i'm not sure how long i'd have to run it w/o the tune.
hmotors includes the engine harness with the motor, couldnt i just take my old one out and use that?
 
  #9  
Old 01-25-2012, 07:18 AM
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I have never heard of anyone running obd2 in an obd1 car, but I supposed it could be done. You would need more than just the engine harness because the f20b engine harness isnt going to plug into your cars sub harness.

Seems like it would be a big headache when you could order a obd1 ecu with a basemap for $100 or so.
 
  #10  
Old 01-25-2012, 09:12 AM
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yeah i gotcha, well i guess a little wiring is always fun anyways
i'll letcha know if i run into any problems, i plan on starting the build pretty soon here
 

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