Romeo vs. Windsor - Ford Mustang Forum
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post #1 of 16 (permalink) Old 10-26-2010 Thread Starter
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Romeo vs. Windsor

Any differences that you guys know of between the two engines?

Windsor FTW??
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post #2 of 16 (permalink) Old 10-26-2010
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All five main caps on the Windsors are crossbolted, but they have dowels between main caps and block instead of the jackscrews that were used for the Romeo blocks.

The bolt pattern for the front cover is the same as it is on the late Romeo blocks, but the two bolt holes just above the pan rail are 10 x 1.50 mm instead of 8 x 1.25 mm.

Windsor has 8 bolts that hold the flexplate/flywheel on instead of 6 like the Romeo.

Romeo has press-fit pistons, Windsors have C-Clips.

Romeo has 11 bolt valve covers, Windsor has 13. Romeo also has "webbed" cam caps, where the Windsor hase individual straps for the cams. The Romeo cams have bolt on sprockets, where the Windsors press on.

2001 Dark Highland Green Bullitt
12.25@110 naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
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post #3 of 16 (permalink) Old 10-26-2010
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if i remember right, there is a difference in water pump shaft lengths. idk if that was a model year difference, or a romeo/windsor difference.

out of the mustang game, got me a lightning
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post #4 of 16 (permalink) Old 10-26-2010
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That's a model year difference, the early Romeos and Windsors all used the same waterpump.

2001 Dark Highland Green Bullitt
12.25@110 naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
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post #5 of 16 (permalink) Old 10-26-2010
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There is a difference in the design of the oil filter adapter. The oil pressure sender is not in the same location.

The distance between the valve covers is different. This creates issues if swapping parts from Windsor/Romeo as components like the PCV hoses are different lengths.

The t-stat housing is in a slightly different location/angle. If swapping a Windsor/Romeo a new upper radiator hose will be needed.

The bolts holes for things like cylinder heads and motor mounts are in the same location and will interchange.

There are minor differences in the belt routing. The exact differences are a more of MY thing (COP vs coil pack for example). The size difference of some of the timing cover bolts has already been mentioned (8mm vs 10mm).

The power output and HP rating of the motors are the same.

2003 GT Convertible (sold & missed)
2000 GT coupe (Craigslist project. Fixed. Now my DD). Windsor to Romeo swap.
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post #6 of 16 (permalink) Old 10-28-2010 Thread Starter
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Just found this and thought id add it.

There were two cranks used in these motors from ’99 through ’04 with a couple of variations. There’s a light one and a heavy one, depending on the year, and they had six or eight bolt crank flanges, depending on the application and the year. The Romeos always had a six-bolt flange, but the Windsors came both ways, so check the application charts to see when and where they were used.
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post #7 of 16 (permalink) Old 10-28-2010 Thread Starter
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Actually i found a whole page that says a lot of stuff:

Rebuilding The Ford 4.6L: Engine Builder
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post #8 of 16 (permalink) Old 10-28-2010
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That page leaves quite a few things out, and I've never run into a Windsor with a 6 bolt crank.

2001 Dark Highland Green Bullitt
12.25@110 naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
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post #9 of 16 (permalink) Old 10-28-2010 Thread Starter
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Quote:
Originally Posted by Bullitt5339 View Post
That page leaves quite a few things out, and I've never run into a Windsor with a 6 bolt crank.
Hmmm they must've been misinformed. But still not a bad read.
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I'm not saying it's wrong, but they make it out to where you have to check, but in my experience, I would count on Windsors to be 8 bolt cranks, even though there may be a few oddballs out there, it's not very common.

2001 Dark Highland Green Bullitt
12.25@110 naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
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Ok guys I need help on my issue. I just bouth engine for my horse, but now I know it is a windsor engine and I had Romeo so You thing I can put this engine in my car? the windsor engine have a bad camshaft so I was trying to use the romeo cam on the windsor but is way different so don't know what to do .
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The only difference in the cams is that the Windsors have pressed on cam sprockets, and the Romeos have pressed on sprockets, they're still interchangeable, you just need to swap the gears over with the cams for it to work.

2001 Dark Highland Green Bullitt
12.25@110 naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
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post #13 of 16 (permalink) Old 01-31-2011 Thread Starter
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Sweeet. People are using the search bar. :kooky:
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winsor engine

Quote:
Originally Posted by Bullitt5339 View Post
The only difference in the cams is that the Windsors have pressed on cam sprockets, and the Romeos have pressed on sprockets, they're still interchangeable, you just need to swap the gears over with the cams for it to work.
ok but I put it on and when I turn the cranshaft the cam hit the valvue.
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Then you didn't set the timing correctly.

2001 Dark Highland Green Bullitt
12.25@110 naturally aspirated on a bone stock 2V longblock

Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

If it weren't for physics and law enforcement, I'd be unstoppable.
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