question about rebuild
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2nd Gear Member
Joined: Feb 2007
Posts: 424
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question about rebuild
friend's cylinder walls are scored. if it were to bored over to the next size what would it be?
car is a 99 svt cobra with teksid block stock heads
car is a 99 svt cobra with teksid block stock heads
Last edited by justakid; Jun 17, 2009 at 11:51 AM.
2nd Gear Member
Joined: Apr 2009
Posts: 314
From: Near China now...
.020 is the correct size. You're going from a 3.552 inch bore to a 3.572 inch bore. If it's scored really bad, a .020 might not even fix it. New 99+ blocks can be found cheap. Might as wel just start with a fresh block. And for the record the 99+ don't have the Teksid block. They have a WAP block.
Also the displacement goes from 281 ci - 284 ci with a .020 over bore.
Also the displacement goes from 281 ci - 284 ci with a .020 over bore.
5th Gear Member
Joined: Jun 2005
Posts: 4,634
From: Holland, MI
.020 is the correct size. You're going from a 3.552 inch bore to a 3.572 inch bore. If it's scored really bad, a .020 might not even fix it. New 99+ blocks can be found cheap. Might as wel just start with a fresh block. And for the record the 99+ don't have the Teksid block. They have a WAP block.
Also the displacement goes from 281 ci - 284 ci with a .020 over bore.
Also the displacement goes from 281 ci - 284 ci with a .020 over bore.
2nd Gear Member
Joined: Apr 2009
Posts: 314
From: Near China now...
I'm not arguing with you but I'm bring another point to the table. There is alot of 99 Cobra guys that have a Teksid block. There was a thread about a year ago on SVTperformance and it was amazing how many 99 Cobra guys had one even though we where always told that 98 was the last year.
I haven't heard that before. It could be true I suppose, so I won't say yay or nay either way...lol.
But on the record books from Ford, the 99+ came factory with the WAP aluminum block. You could always just reference the part number.
WAP iron blocks have a big W cast in the valley, and one more on the front - dunno if this was true of the AL blocks or not.....
Early Teksid blocks used a "jack screw" to pre-load the side of the main caps, but in 99 all blocks used a straight, single-use bolt.
Teksid blocks = F6LZ-6010-AB, not sure if there were others but that's what's on the 98-98 Cobras and 93-98 Lincolns.
99+ Teksid blocks = XR3Z-6010-CA
01+ are all WAP
WAP valleys have a slew of ribs (like 14) - Teksids have 6
WAP block weigh 80 pounds, Teksids 85.
There are other differences but would require a side-by-side comparo unless you really know the blocks well. (thicker oil pan rails and main bearing webs on WAP)
^Borrowed from Johnny on another site