can somone tell me what the diff is from the 4.6 romeo to the 4.6 windsor.

 

From what I have seen, besides being made in two different plants, there are differences in the timing chain componants and possibly the crank snout for the flywheel/flexplate. There may be more, but I am not sure.

 

windsor is usually 8 bolt crank, romeo is usually 6 bolt.

The romeo plant made an aluminum block for some applications (explorer).

 

Romeo has 6-bolt crank, Windsor is 8. Windsor has larger timing cover bolts, the valve covers are different, and the cam gears are press on, rather than bolt on as on the Romeo engines. Also the camshafts have individual caps, as opposed to girdle style caps on the Romeo's.


Adam

 

Check out this months HotRod. They show how to build a reliable 525HP 4.6L Romeo engine. The crank bearings are different too.

 

how do you know which one you have? a 97 mustang gt?

 

the 8th digit in your vin number ...if its a W you've got the romeo if its a 6 its the windsor

 

So--- is there a general opinion as to which engine is more durable and overall stronger? I just went out and checked my vin and found a W. Am I happy or am I sad?

 

the 8th digit in my friend 97 gt is x?and theres no 6 or w anywhere?

 

According to the article, one is not better than the other. The biggest difference is in the thrust bearing design of the crank.
The professional Mod performance engine builder says that they are both about equal.

 

72Ford360:

W 4.6 EFI-SOHC(R) V-8 GASOLINE FORD 190-210 HP
V 4.6 EFI-DOHC V-8 GASOLINE FORD 260-305 HP
9 4.6 EFI-SOHC V-8 NATURAL GAS (CNG) FORD 175 HP
X 4.6 EFI-SOHC (W)1 V-8 GASOLINE FORD 225 HP

1 Engine used only for Mustang GT and differs from "W" coded engine.
(R) = Romeo Engine Plant
(W) = Windsor/Essex Engine Plant

 

I'll have to get that copy of HotRod. My vin has the W, so stay tuned as I attempt to stuff a few more ponies under my hood.

 

well his mustang is a 97 gt isnt it supposed to have 215 hp ?or are all x 225hp?

 

That's from a 2001 book. I'm sure in 1997, it was much less HP.

 

Subtract about 30 hp from 98 back. They got about 30hp more in 99 with the PI heads and intake.