number is the iteration, next letter (sometimes two) is the family (for example, 5M, or 3MZ). This is often followed by a dash, but sometimes not, and then a GE or FE (in the case of V6's, i can't think of any that aren't efi). The G or F refers to the cams (can't remember exactly, but the G is a more aggresive cam, and the F is more fuel efficient, but there's not many G's left). The E refers to efi. If it's not efi, then it won't have the E. You'll see like 4A-F, which is a carbed 4A engine.
He's right. For example, my Cressida has the 5M-GE engine. 5th generation of this motor, M being the series of it, G for more performance oriented, and E for EFI.
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1994 Toyota Pickup Xtra cab 4x2 22R-E 44,000 mi
1998 Toyota Avalon 1MZ-FE 137,000 mi
2005 Chevrolet Silverado Crew Cab 49,000 mi
2006 BMW 330i Sedan 85,000 mi
2007 Toyota Camry Hybrid 2AZ-FXE 62,000 mi
As of May 17, 2011. DEATH TO SCION!
Last edited by 84Cressida; 12-16-2005 at 05:48 PM.
2GR-FSE: 2nd iteration of the GR engine series (not necessarily the generation anymore):
1 - 4.0L 2 - 3.5L
3 - 3.0L
4 - 2.5L
F - Narrow valve angle (22-35 deg)
S - D-4 or D-4S (direct injection)
E - Fuel injected
By the way, the H in 5E-FHE means "high cam profile" in the Japanese version of above, but what that means exactly is still unknown.
X actually means Atkinson cycle - I saw the English wiki corrected - it used to read "X=Hybrid" too. Now that I think about it, it doesn't seem Toyota Atkinson-ized 3MZ just to mate it with HSD. Only 1NZ and 2AZ has Atkinson versions and they are all paired up with HSD, for obvious reasons.
By the way, the H in 5E-FHE means "high cam profile" in the Japanese version of above, but what that means exactly is still unknown.
Somebody explained what the "H" meant in the corolla forum a little while ago, in reference to the 4A-FHE that had a badge on the valve cover reading "EFI-S"
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1984 Toyota Cressida
1994 Toyota Pickup
1998 Toyota Avalon
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