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View Full Version : Flat top pistons in a 89/90 CB?



turbovanmanČ
12-31-2008, 08:49 PM
Picked up a short block for a 2.2 crank, casting date of 89, non BS oil pan and flat top pistons? What the hell had flat tops? I am assuming Omni as its an N/A engine, no turbo drainback.

BadAssPerformance
12-31-2008, 09:24 PM
2.2L N/A Omni or other... What was a base model Daytona or Spirit engine option?

LOL, checked Dave's KC article and only turbo VINs :D

http://www.turbo-mopar.com/forums/vbarticles.php?do=article&articleid=3

turbovanmanČ
12-31-2008, 10:37 PM
2.2L N/A Omni or other... What was a base model Daytona or Spirit engine option?

LOL, checked Dave's KC article and only turbo VINs :D

http://www.turbo-mopar.com/forums/vbarticles.php?do=article&articleid=3

I never thought that fuel injected would have flat tops? :confused:

OmniLuvr
12-31-2008, 11:27 PM
how much compresion with flat tops and swirl head not milled? i had a 2.2, flat tops and milled the head like 40 thou, had to back off the timing a bit on pump gas, and ran a wet 50 shot with race gas, but it moved pretty decent in the omni without the NO2.

turbovanmanČ
01-01-2009, 12:48 AM
how much compresion with flat tops and swirl head not milled? i had a 2.2, flat tops and milled the head like 40 thou, had to back off the timing a bit on pump gas, and ran a wet 50 shot with race gas, but it moved pretty decent in the omni without the NO2.

Considering turbo engines are around 140-150 and 8:1, TBI's are almost flat top, small dish and 9.0:1 and I would guess 170-180 cranking, that would make flat tops 200 psi or more, :wow1:

OmniLuvr
01-01-2009, 05:55 AM
i was WAY over that then, it was fun while it lasted. i was 17, street racing all the time, till i raced a crx around a corner onto the freeway, lost oil pressure, and that was all she wrote. 10 years later and i barley leard to take it easy around corners, time for some baffles.

OmniLuvr
01-01-2009, 05:56 AM
i was WAY over that then, it was fun while it lasted. i was 17, street racing all the time, till i raced a crx around a corner onto the freeway, lost oil pressure, and that was all she wrote. 10 years later and i barley leard to take it easy around corners, time for some baffles.

OmniLuvr
01-01-2009, 05:56 AM
i was WAY over that then, it was fun while it lasted. i was 17, street racing all the time, till i raced a crx around a corner onto the freeway, lost oil pressure, and that was all she wrote. 10 years later and i barley learned to take it easy around corners, time for some baffles.

OmniLuvr
01-01-2009, 05:59 AM
wow, im pretty drunk

4 l-bodies
01-06-2009, 02:11 AM
Picked up a short block for a 2.2 crank, casting date of 89, non BS oil pan and flat top pistons? What the hell had flat tops? I am assuming Omni as its an N/A engine, no turbo drainback.
Oh that's the optional 2.2 EFI HO high torque motor! :drum: Only available in US, sorry Simon.:p Runs on e-85 only.:D
Todd

turbovanmanČ
01-06-2009, 01:58 PM
Oh that's the optional 2.2 EFI HO high torque motor! :drum: Only available in US, sorry Simon.:p Runs on e-85 only.:D
Todd

How did it get in Canada, ;)

bakes
01-06-2009, 02:45 PM
It jumped 0 ave. with the others lol.

turbovanmanČ
01-06-2009, 02:51 PM
It jumped 0 ave. with the others lol.

No kidding, hahahaha, :eyebrows: