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F20B6 in my 4th gen prelude

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Old Jan 4, 2010 | 10:03 AM
  #1  
EdgarsBrenholms's Avatar
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Default F20B6 in my 4th gen prelude

Anyone have some information about F20B6 engine part sizes? Where can I get this info!!! Plz help, thanks for any information!!!
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Old Jan 4, 2010 | 10:32 AM
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Default Re: F20B6 in my 4th gen prelude

it would be a fairly straight forward swap. the f20b is a very similar to the h22 in many ways. the motor mounts trannys and wire harnesses would plug in a abolt up the only thing id think you would need is the proper ecu for it. they are a nice motor and uncommon here in the states so im a fan of them.
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Old Jan 4, 2010 | 02:57 PM
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Default Re: F20B6 in my 4th gen prelude

No, no. F20B6 is OBD2 SOHC VTEC met in Euro 6 gen Accords. Nothing special.

What do you need to know about parts for this engine?
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Old Jan 4, 2010 | 09:53 PM
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Default Re: F20B6 in my 4th gen prelude

all f & H's are straight compatable with the obvious acception to the f20c - but i do know there is a f20b that is very very similar to the h22 - and its an cast iron or aluminum block ( which slips my mind) but i do know it makes about 200hp at the flywheel
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Old Jan 5, 2010 | 06:58 AM
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Default Re: F20B6 in my 4th gen prelude

Since its a SOHC VTEC motor, I'm pretty sure its similar to the F23A1 motor except for the block.
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Old Jan 6, 2010 | 06:17 AM
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Default Re: F20B6 in my 4th gen prelude

from wiki:

Displacement: 1997 cc
Configuration Valve: SOHC/DOHC, 16 valves, VTEC/Non-Vtec
This engine came in SOHC in vtec and non vtec, there is also a DOHC VTEC version of the engine, they all share the same engine code although they are very different.
The DOHC VTEC version comes with a blue powder coated valve cover as the H23A VTEC from the japanese accord sir-t. They're called BLUE TOP and are only from japan.
DOHC VTEC Manual Version:
197 HP @ 7200RPM
145 TQ @ 6600RPM
11.0:1 CR
85mm bore
88mm stroke
23mm wrist pin
145.5mm rods (f20b rod length = 145.425)
1.65 r/s ratio
55mm mains like h22a4 block
rod journal has been offset ground on both sides to the size of a b-series rod journal.
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Old Jan 9, 2010 | 04:08 PM
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Default Re: F20B6 in my 4th gen prelude

Originally Posted by pentaq
No, no. F20B6 is OBD2 SOHC VTEC met in Euro 6 gen Accords. Nothing special.

What do you need to know about parts for this engine?
With some hybrid actions, I can get the same power as JDM 2.2 vtec... maybe more, I have some ideas to make this engine about 230HP

All this experiment is to get my prelude for dragrace in class 2.0

Sorry about my english!!!
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Old Jan 11, 2010 | 01:20 AM
  #8  
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Default Re: F20B6 in my 4th gen prelude

Originally Posted by EdgarsBrenholms
With some hybrid actions, I can get the same power as JDM 2.2 vtec... maybe more, I have some ideas to make this engine about 230HP

All this experiment is to get my prelude for dragrace in class 2.0

Sorry about my english!!!
Anyhow I doubt it. It's 80hp over stock and if you retain the stock displacement it's not an easy task.
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