Replacing B16A block with a B20 keeping the head of the B16A

mok · 03-11-2007, 01:50 PM

I have a B16A2 engine came stock on my EG6 1992, I want to replace my block with a B20Z (CRV), what parts should I change? I want to keep my B16 head obviously
Can I keep everything the same, engine mounts, transmission, clutch ,axles

**ryanM** · 03-11-2007, 02:11 PM

yes you keep everything the same, just swap the bottom end

Ls-HatchBoy · 03-12-2007, 02:20 PM

everything is the same, cept you need to get a special head gasket kit, and tap the head

defvayne · 03-12-2007, 02:25 PM

Quote:

Originally Posted by Ls-HatchBoy

everything is the same, cept you need to get a special head gasket kit, and tap the head

yup there is a kit you can purchase from Honda-T**ch.com search it up.

Billy. · 03-12-2007, 04:08 PM

uhh, i dont know bout everyone elses, but my b20vtec needed fuel management. pressure regulator and vafc2 to get the AFR in the green zone

*EDIT*
i recommend if you going to do a b20 bottom, build it for higher compression unless your plan to boost. the vtec head likes more air pressure, else it will stop making power in the low 7k rpms and you wont expect to see more than 165whp stock.

**ryanM** · 03-12-2007, 04:13 PM

Quote:

Originally Posted by Mugenkid18

uhh, i dont know bout everyone elses, but my b20vtec needed fuel management. pressure regulator and vafc2 to get the AFR in the green zone

*EDIT*
i recommend if you going to do a b20 bottom, build it for higher compression unless your plan to boost. the vtec head likes more air pressure, else it will stop making power in the low 7k rpms and you wont expect to see more than 165whp stock.

why did swapping blocks change your air/fuel?

Billy. · 03-12-2007, 04:43 PM

Quote:

Originally Posted by LongGrain

why did swapping blocks change your air/fuel?

you tell me. but it did, it ran lean past 6k rpm

**ryanM** · 03-12-2007, 05:02 PM

Quote:

Originally Posted by Mugenkid18

you tell me. but it did, it ran lean past 6k rpm

that sounds like an unrelated problem to me, swapping bottom ends shouldnt change your a/f at all, thats controlled by the injectors, throttle body/intake and ECU.

defvayne · 03-12-2007, 05:28 PM

Quote:

Originally Posted by LongGrain

that sounds like an unrelated problem to me, swapping bottom ends shouldnt change your a/f at all, thats controlled by the injectors, throttle body/intake and ECU.

i guess you have to get the ecu tuned.

Billy. · 03-13-2007, 09:08 AM

Quote:

Originally Posted by defvayne

i guess you have to get the ecu tuned.

...that or use piggyback hack vafc

DAF · 03-13-2007, 09:48 PM

You can use the LS/Vtec conversion kit for it. All a b20 is, is a 84mm LS block basicly.

03-11-2007, 01:50 PM	#1
mok Registered User Join Date: Mar 2007 Location: Lebanon Age: 33 Posts: 5 Reputation level: 10	Replacing B16A block with a B20 keeping the head of the B16A I have a B16A2 engine came stock on my EG6 1992, I want to replace my block with a B20Z (CRV), what parts should I change? I want to keep my B16 head obviously Can I keep everything the same, engine mounts, transmission, clutch ,axles

03-12-2007, 04:08 PM	#5
Billy. ♪♪ ♫♪ ♪♫♪ ♪♪ ♫♫ ♪ Join Date: Oct 2003 Location: Chucktown, SC Age: 28 Posts: 8,222 '06 HONDA RIDGELINE '00 HONDA CIVIC Reputation level: 10	uhh, i dont know bout everyone elses, but my b20vtec needed fuel management. pressure regulator and vafc2 to get the AFR in the green zone EDIT i recommend if you going to do a b20 bottom, build it for higher compression unless your plan to boost. the vtec head likes more air pressure, else it will stop making power in the low 7k rpms and you wont expect to see more than 165whp stock. __________________ PayPal® - US Premier Seller • ebaY® *- Mugenkid18* • iTrader Profile

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03-11-2007, 02:11 PM	#2
ryanM Banned Join Date: Jan 2005 Location: Midwest Age: 83 Posts: 8,984 Reputation level: 10	yes you keep everything the same, just swap the bottom end

03-12-2007, 02:20 PM	#3
Ls-HatchBoy Honda Whore Join Date: Sep 2006 Location: Virginia Age: 27 Posts: 672 Reputation level: 10	everything is the same, cept you need to get a special head gasket kit, and tap the head

03-13-2007, 09:48 PM	#11
DAF Zinc Member Join Date: Feb 2005 Location: Lillington, NC Age: 28 Posts: 602 Reputation level: 10	You can use the LS/Vtec conversion kit for it. All a b20 is, is a 84mm LS block basicly.

Replacing B16A block with a B20 keeping the head of the B16A

Engine Tech / Drivetrain