7afe and 4afe - Toyota Nation Forum : Toyota Car and Truck Forums

lifeisviewtiful · 02-25-2005, 10:06 PM

maybe this is a repost but i wasn't very specific before. how can i tell by inspection, the difference between these 2 engines? i already know one is 1.6 and the other is 1.8. i want to know how can a person be able to tell the difference upon close inspection of the engine itself.

lifeisviewtiful · 02-25-2005, 11:59 PM

please help

Dr Tweak · 02-26-2005, 12:04 AM

Normally there's a tag that says what it is under the hood, but I can't think right now of the external differences between the two engines...

toyotaspeed90 · 02-26-2005, 03:11 AM

Quote:

Originally Posted by Dr Tweak

Normally there's a tag that says what it is under the hood, but I can't think right now of the external differences between the two engines...

oil pans are different... 7a blocks are taller.... the stamping on the block says "7a" on it... to name a few

Dr Tweak · 02-26-2005, 04:08 AM

Quote:

Originally Posted by toyotaspeed90

oil pans are different... 7a blocks are taller.... the stamping on the block says "7a" on it... to name a few

Do you know what the different external heights are? Could you take a tape measure and figure it out that way?

lifeisviewtiful · 02-26-2005, 09:29 AM

where on the block do i look for the stamp to tell where it says 7a

ems · 02-26-2005, 11:24 AM

They also have different valve covers. If you show us a picture we should be able to tell you which is which.

lifeisviewtiful · 02-26-2005, 02:15 PM

ok will do

toyotaspeed90 · 02-27-2005, 02:20 PM

Quote:

Originally Posted by ems

They also have different valve covers. If you show us a picture we should be able to tell you which is which.

only between an early 4afe and late 7afe.... if you were to look at a 95 4afe and 95 7afe the valve covers should be the same -- the heads are the same... earlier 4afe's used 3 bolts to hold the valve cover down, later i believe they switched to 4

toyotaspeed90 · 02-27-2005, 02:21 PM

Quote:

Originally Posted by Dr Tweak

Do you know what the different external heights are? Could you take a tape measure and figure it out that way?

you probably could.... but I personally don't know....if the oil pan was off you should be able to figure out by the crank as well, as it will have a longer stroke than a 4a block