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j00tel
11-10-2002, 12:06 PM
Forgive me if this has already been answered somewhere else in the forums, I did search first before asking...

Can someone please tell me the factory specifications (SOHC/DOHC, vavles/cyl (# intake/# exhaust), crank hp/tq, etc) of the various A20A motors? Oh, and what year/model the motors came in would be handy too as I'm looking into an A20A for my turbo '83 Accord project.

Check it out:
http://www.j00tel.net/turbo_ek1

Thanks in advance,
Dan
Jareds 89 LX-i
11-10-2002, 12:25 PM
All A20's are SOHC 12 valve engines, with 2 intake valves and 1 exhaust valve

specs are:

86-89 BS/A20A1 (carb'd) -- 8.8:1 CR, 98 hp, 109 ft. lbs torque
86-87 BT/A20A3 (EFI) -- 8.8:1 CR, 110 hp, 114 ft. lbs torque
88-89 A20A3 (EFI) -- 9.3:1 CR, 120 hp, 122 ft. lbs torque

I'm going off memory here, so if I made a mistake someone please correct me :)
j00tel
11-10-2002, 01:19 PM
Thanks Jared.

I've never seen a designation like BS/A20A1 or BT/A20A3. What do the "BS" and "BT" prefixes mean?

--Dan
Jareds 89 LX-i
11-10-2002, 02:11 PM
BS (carb'd) and BT (EFI) were for 1986 models only, and some 87's as well (leftover engines from '86). The engines were the same as the later A20's, they just hadn't adopted the A20 name yet

:)
A20A1
11-10-2002, 07:48 PM
It's 9.1:1 CR for A20A1 right?
smufguy
11-10-2002, 07:50 PM
yep, the 88-89 A20A1 u mentioned mike came with 9.1:1 compression ratio.
Jareds 89 LX-i
11-10-2002, 08:17 PM
Ah yes, you would be correct. 86-89 A20A1's were 9.1:1. Sorry bout that ;)
anchovies
11-10-2002, 11:57 PM
The FAQ should be changed to include this info imho :D
j00tel
11-11-2002, 06:51 AM
I was thinking the same thing, I couldn't find a FAQ with this information and I figure it must be asked at least somewhat often on this board.

Thanks for the help,
Dan
j00tel
11-11-2002, 08:38 AM
Has everyone seen KMS Engine Development's A20A powered Civic that apparently beats up on V8 SCCA cars?

320 horsepower from a naturally aspirated A20A. Keep in mind that the old Civics weigh approximately 2,000 lbs.

http://www.honda-performance.com/bluecivic.html

--Dan
89lxi95zx7
11-11-2002, 09:22 AM
thought 89 efi was an a3 not a1,but i'm wrong alot.
j00tel
11-11-2002, 10:56 AM
Seems like lots of different answers here as to the specifications of the various A20A motors... :)

--Dan
anchovies
11-11-2002, 11:05 AM
Yeah j00tel, that site has been posted before, check this thread http://3geez.com/showthread.php?s=&threadid=6183&highlight=320%2A

89lxi95zx7, what has been posted above is already correct. Don't know what you are referring to.
A20A1
11-11-2002, 11:59 AM
http://www.honda-performance.com/pics/peachstates.jpg

The 1999 Peachstate Speedway Champ, Brent Johnson and his Accord.