Memphis Twin
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| posted on 1/2/09 at 08:05 PM |
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Blacktop-Silvertop; What's the difference?!
Please excuse me if this has been covered hundreds of times before.
I'm an 8-valve pushrod kind of bloke ( ), but even I have to admit that some of these new (!) fangled 16v engines might be the way to go.
So what is the difference between a 2.0 Zetec Silvertop and a later Blacktop? I already have a registered car (with a pushrod engine of course) so
don't need to worry about cats, sva and all that cr@p. I'd probably run one on quadruple Flatslides..or shock-horror a pair of ruddy great
Webers Wouldn't want to get totally modern...
Cheers Chris.
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omega0684
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| posted on 1/2/09 at 08:11 PM |
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the blacktop is the newer of the two, blacktops have longer rods and lower piston crowns, mechanical rather then hydrolic lifters plus the distinctive
black can cover and not the aliminium one found on the silvertop.
Read here
[Edited on 1/2/09 by omega0684]
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coozer
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| posted on 1/2/09 at 08:16 PM |
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Silvertop... has single piece cast ally sump, BT = two piece ally-steel pan sump.
Blacktop has longer con rods and shallow pistons for more revs...
Silvertop has hydraulic followers, BT solid with shims..
Blocks are slightly different... M10 threads in different position.
Oil pump different between all the different zetecs..
Different water pump..
BUT.. there is some difference between 1.8 and 2.0 silvertops as well... 2.0 sump deeper than the 1.8.. 1.8 water pump goes clockwise, 2.0 silvertop
and BT go anti clockwise.
So.. if your thinking of changing go for the newest blacktop (Focus) you can find.
Steve 
1972 V8 Jago
1980 Z750
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Memphis Twin
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| posted on 1/2/09 at 10:50 PM |
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Thanks for your replies chaps. A blacktop it may well be then.
Wish they made a pushrod version!
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Schrodinger
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| posted on 2/2/09 at 08:44 PM |
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Have a look on http://www.zetec-cat.co.uk/ there is quite a good description of them both and the joys of fitting both
Keith
Aviemore
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Memphis Twin
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| posted on 3/2/09 at 12:27 AM |
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quote:
Originally posted by Schrodinger
Have a look on http://www.zetec-cat.co.uk/ there is quite a good description of them both and the joys of fitting both
That's a very informative site. Thanks.
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