Timing belt, fact or Internet folklore?
09-18-2015, 11:22 AM
#50
09-18-2015, 02:05 PM
#51
I was thinking of this thread this morning as I went for 15lbs of boost in my Volvo 2.4T.
I get 50,000+ miles out of the belts on that car. I am having the WP done today for what I believe is the first time at 126,000 miles. And that car gets flogged!
I get 50,000+ miles out of the belts on that car. I am having the WP done today for what I believe is the first time at 126,000 miles. And that car gets flogged!
09-19-2015, 07:48 PM
#55
Drifting
Does it really say remove the pulley and rear cover to change the belts, I thought that was for the water pump ? I didn't when I did the belts and pulleys. I wonder how long ago the cambelt tensioning procedure was written, and if it took account of the extra tension applied when the head/block expand at working temp.
09-20-2015, 09:38 PM
#56
Does it really say remove the pulley and rear cover to change the belts, I thought that was for the water pump ? I didn't when I did the belts and pulleys. I wonder how long ago the cambelt tensioning procedure was written, and if it took account of the extra tension applied when the head/block expand at working temp.
09-21-2015, 03:28 AM
#57
Drifting
Will this tool work on the 944?
09-21-2015, 10:35 AM
#59
OK, l didn't want to dredge this up but thinking about this. l think l may have a answer. First a few things that helped me come to this conclusion.
It's been said here the timing belt is a new technology in 83. My earliest recollection of a timing belt used was the 1966 Pontiac OHC 6 cylinder. It's been said here it's a big 4 cylinder engine is hard on belts. Chrysler's 2.5L with a Turbo makes 150HP. It's been said here it's the power pluses of a 4 cylinder engine. Fiat and VW both had 4 cylinder diesel engines. Most 4 cylinder engine's the timing belt also drive's the oil pump. The 944 is the only car that l know of that the oil pump is driven off the crankshaft.
So what's my conclusion, as Dr. House says, everybody lies. I bet you a lot of those belt failure's the belt was never change. I also believe a lot of diy's (and professional mechanics too) have no idea how tight a belt should be or know a good roller form bad one. Yes some may have bad luck, but I just can't see how the 944 timing belt arrangement being problematic.
It's been said here the timing belt is a new technology in 83. My earliest recollection of a timing belt used was the 1966 Pontiac OHC 6 cylinder. It's been said here it's a big 4 cylinder engine is hard on belts. Chrysler's 2.5L with a Turbo makes 150HP. It's been said here it's the power pluses of a 4 cylinder engine. Fiat and VW both had 4 cylinder diesel engines. Most 4 cylinder engine's the timing belt also drive's the oil pump. The 944 is the only car that l know of that the oil pump is driven off the crankshaft.
So what's my conclusion, as Dr. House says, everybody lies. I bet you a lot of those belt failure's the belt was never change. I also believe a lot of diy's (and professional mechanics too) have no idea how tight a belt should be or know a good roller form bad one. Yes some may have bad luck, but I just can't see how the 944 timing belt arrangement being problematic.
Last edited by marc abrams; 09-21-2015 at 07:49 PM.
