3.0 interference motor?
03-22-2008, 09:29 PM
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3.0 interference motor?
is the 3.0 v6, 89 to 95 an interference motor?
if the timing belt snaps will it smack valves?
what is the replacement interval?
if the timing belt snaps will it smack valves?
what is the replacement interval?
03-22-2008, 09:37 PM
#3
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No and no and approx. every 60k miles.
The 22r series motors were/are interference. If your timing belt snapped, all it would do is quit running. And, 60k is what's recommended, but lots of folks go further than that with no problems. You just have to inspect it every so often. That still doesn't speak for the timing belt pulleys and tensioner, though. They can last for a very long time....several times longer than a belt. Just depends on how old your present ones as to when they'd need replacing. Even then, inspection is the thing to do.
The 22r series motors were/are interference. If your timing belt snapped, all it would do is quit running. And, 60k is what's recommended, but lots of folks go further than that with no problems. You just have to inspect it every so often. That still doesn't speak for the timing belt pulleys and tensioner, though. They can last for a very long time....several times longer than a belt. Just depends on how old your present ones as to when they'd need replacing. Even then, inspection is the thing to do.
Last edited by thook; 03-22-2008 at 09:39 PM.
03-24-2008, 11:56 AM
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I there is one difference - but not too big - the timing belt is tensioned by a hydraulic tensioner instead of a spring on some years. I think 1993+. Just an fyi...
03-24-2008, 12:08 PM
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03-24-2008, 02:48 PM
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There are differences....pre 90's... in throttle body styles, distributor design, and...I believe from every one to two years even through the 90's....on switch and sensor connectors. I don't know specifics, though. Too much to keep up with...lol.
If your planning a switcheroo, you'll just have to compare and decide what to keep from the original and what to replace/splice in from the donor. When I swapped a motor from an '89 into my '92, I just ended up with the block from the '89. The head assemblies fit, but since the PO/rebuilder of the '89 messed up the heads in a couple of different ways, I went back to the top end from my '92.
As I recall, the main difference was in TB and distributor design. Probably...on the TB, anyway...because the motor was out of a 5spd and the '92 is an auto with cruise control. So, my '92 TB had an additional dashpot and the TPS connectors were different. The injectors were the same, the ECT sensor was the same, but the sensor cluster housing on the manifold was different.
As I said, too much to keep up with...engh.
If your planning a switcheroo, you'll just have to compare and decide what to keep from the original and what to replace/splice in from the donor. When I swapped a motor from an '89 into my '92, I just ended up with the block from the '89. The head assemblies fit, but since the PO/rebuilder of the '89 messed up the heads in a couple of different ways, I went back to the top end from my '92.
As I recall, the main difference was in TB and distributor design. Probably...on the TB, anyway...because the motor was out of a 5spd and the '92 is an auto with cruise control. So, my '92 TB had an additional dashpot and the TPS connectors were different. The injectors were the same, the ECT sensor was the same, but the sensor cluster housing on the manifold was different.
As I said, too much to keep up with...engh.
04-06-2008, 07:24 AM
#9
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well, back to the subject of interference... I read somewhere that If the heads were milled down too far that valves could be bent because there would not be enough "space" for them to open up if the belt snapped or the timing was off...
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