Timing chain length?
02-12-2009, 09:24 AM
#23
*Morning!
Wow, I actually got this site open on my dialup system! Of course it took three cups of coffee but that's ok.
There sure is a lot of confusion on the year changes but I see lots of you have it right.
I gave up on the serial numbers, now I just use my tape measure, or look closely at the side of the block for that bow tie shaped pad on the 1985 and later.
The early block is 11.280" tall, the late one is 11.090" tall. 1981 to 1984 is early, 1985 and up is late but watch out for the 20R, those pop up regularly.
It seems that these engines have been swapped around, changed over, had things bolted on that don't belong, on and on and on. But the tape measure doesn't lie.
Between the early and late the only things that interchange for sure are the rod bearing inserts, the head gasket, and the freeze plugs.
Yes, early is 98 link, put one of those chains on a late engine and start it and she will let you know...Late is 96 link. Even more fun is the 1981 to 1982 is a dual full roller, all the rest are single. But don't count on that, hundreds of the very early engines have been converted to the dual roller, and lots of late engines have been converted to the aftermarket dual $$etup...
Yep. Tape measure, works every time....*EB
Wow, I actually got this site open on my dialup system! Of course it took three cups of coffee but that's ok.
There sure is a lot of confusion on the year changes but I see lots of you have it right.
I gave up on the serial numbers, now I just use my tape measure, or look closely at the side of the block for that bow tie shaped pad on the 1985 and later.
The early block is 11.280" tall, the late one is 11.090" tall. 1981 to 1984 is early, 1985 and up is late but watch out for the 20R, those pop up regularly.
It seems that these engines have been swapped around, changed over, had things bolted on that don't belong, on and on and on. But the tape measure doesn't lie.
Between the early and late the only things that interchange for sure are the rod bearing inserts, the head gasket, and the freeze plugs.
Yes, early is 98 link, put one of those chains on a late engine and start it and she will let you know...Late is 96 link. Even more fun is the 1981 to 1982 is a dual full roller, all the rest are single. But don't count on that, hundreds of the very early engines have been converted to the dual roller, and lots of late engines have been converted to the aftermarket dual $$etup...
Yep. Tape measure, works every time....*EB
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