barraw
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| posted on 12/8/06 at 10:08 AM |
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711M block or 771M
hello, does anyone know whether a 771m (XR2 engine) can be used as a direct replacement for my 711m RWD installation, and will my current head and
sump cover fit a 771m block? if not whats the difference between the two block types. thanks
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Deckman001
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| posted on 12/8/06 at 10:22 AM |
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I think there is a difference to the engine mounts, so probably not suitable, that's what I was told anyway, sorry
Jason
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MikeRJ
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| posted on 12/8/06 at 10:32 AM |
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The FWD crossflow block is missing one set of engine mounting bosses, and the crank is shorter at both ends compared to a RWD engine. Also the water
pump outlet faces in the opposite direction with a 90 degree bend to point the outlet towards the back of the engine, and unfortunately the drillings
for the water pump are different so you can't fit and Escort pump. The timing cover is different (thinner) which is why you can't easily
put vernier sprockets into a Fiesta engine.
The heads are interchangeable, though the Fiesta head has a slightly different casting with a few extra drillings at one end that don't appear
to be used, even on the Fiesta, but they can be ignored.
You can actualy bodge a RWD engine into a FWD car using about 5 sandwich plates to space the gearbox out, but not the other way around.
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barraw
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| posted on 12/8/06 at 10:45 AM |
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thanks , very informative.
cheers
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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