Saturday, Jun 09, 2012 at 22:00
Bruce
just so you can show off round the next campfire I have added the following for you
The first numeric character specifies the engine block's generation
The next one or two letters specify the engine family
like this
1967 - H - OHV
???-??? - 3.6 L (3576 cc) H
1980-1990 - 4.0 L (3980 cc) 2H
1986-1990 - 4.0 L (3980 cc) 12HT
1990 - HD - SOHC
1989-1995 4.2 L (4164 cc) 1HD-T
1995-1997 4.2 L (4164 cc) 1HD-FT
1997- 4.2 L (4164 cc) 1HD-FTE
1990 - HZ - SOHC
1989- 4.2 L (4163 cc) 1HZ
The suffix (separated by a dash) specifies the features of the engine:
Suffix Feature
A Valvematic variable lift intake head
B Twin SU-style side-draft carburetors
After 2000 indicates E85 Ethanol fuel.[citation needed]
C Carburated / California Emissions Controlled
D Twin Downdraft carburetors
E Electronic Fuel injection
F Economy narrow-angle valve DOHC
G Performance wide-angle valve DOHC
H High compression
High pressure charged (example: 2L-THE)
I Single-point fuel injection
J Autochoke (Early models) or unknown pollution control
L Transverse
M Philippines' market (meaning unknown)
N CNG fuel
P LPG fuel
R Low Compression (For 87 and below octane fuel)
S Swirl intake (1980s)
SE D-4 Gasoline Direct Injection (1990s)
T Turbocharged
U With Catalytic converter Japan-spec emissions
V Common Rail Diesel Injection (D-4D)
X Atkinson cycle (typically also indicates a Hybrid engine, as Toyota only uses the Atkinson cycle with hybrids)
Z Supercharged
So a 1HD-FTE is 1st generation with a economy narrow angle DOHC, Turbo, and Electronic fuel injection.
I still can't confirm my 1H"D" for direct injection and 1H"Z" for indirect injection though.
enjoy
Dru
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