F22A1 Cylinder Block Numbers
Thread Starter
Joined: Sep 2013
Posts: 1
F22A1 Cylinder Block Numbers
Greetings All.
I have 2 1990 Accord F22A1s, a very tired one currently in my coupe (5 speed manual) and one (low mileage) saved from grandmothers 4 door (automatic) in storage which I would like to use. The are both F22A1s but there are a couple of differences in the other block markings. I have been attempting to find definitive answers on the net but have had no luck.
MY Engine:
HA
F22A1
3640806 USA PTO-8
Grandmothers Engine:
HM
F22A1
1018367 HM PTO-6
Note: My block has reinforcing ribs cast on the outside of the cylinders while Grandmothers block is smooth in the same area.
Can someone here educate me on the differences between these 2 blocks? ANY information would be greatly appreciated. THANKS!
I have 2 1990 Accord F22A1s, a very tired one currently in my coupe (5 speed manual) and one (low mileage) saved from grandmothers 4 door (automatic) in storage which I would like to use. The are both F22A1s but there are a couple of differences in the other block markings. I have been attempting to find definitive answers on the net but have had no luck.
MY Engine:
HA
F22A1
3640806 USA PTO-8
Grandmothers Engine:
HM
F22A1
1018367 HM PTO-6
Note: My block has reinforcing ribs cast on the outside of the cylinders while Grandmothers block is smooth in the same area.
Can someone here educate me on the differences between these 2 blocks? ANY information would be greatly appreciated. THANKS!
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Joined: Oct 2010
Posts: 7,099
From: United States
3640806 USA PT0-8
1018367 HM PT0-6
The 3640806 and 1018367 are the engine block serial numbers, unique for every engine.
PT0 is the part number for Accord 90-93 or 92-95 Prelude Engine Component. You'll find the PT0 as part of other engine components for 90-93 Accords and 92-95 Preludes.
The USA block probably was assembled in Marysville, Ohio.
The other engine block may have been assembled in Japan.
The cars' VIN will help confirm.
The numbers 6 and 8 may be a version number.
1018367 HM PT0-6
The 3640806 and 1018367 are the engine block serial numbers, unique for every engine.
PT0 is the part number for Accord 90-93 or 92-95 Prelude Engine Component. You'll find the PT0 as part of other engine components for 90-93 Accords and 92-95 Preludes.
The USA block probably was assembled in Marysville, Ohio.
The other engine block may have been assembled in Japan.
The cars' VIN will help confirm.
The numbers 6 and 8 may be a version number.
Last edited by redbull-1; Sep 22, 2013 at 11:14 PM.
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