Question: Is the 22RE an "Interference Engine"?
08-12-2003, 09:49 AM
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Question: Is the 22RE an "Interference Engine"?
The engine in my 1992 Toyota 4x4 (22RE), Is it a "interference engine"?
Your input is highly appreciated.
Your input is highly appreciated.
08-12-2003, 04:23 PM
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As was mentioned, yes, it is an intereference engine...
If the timing belt does break or jump a notch while the engine is running, the results will "interfere" in a serious way with your long-term savings plan. (Here's how it happens: in an "interference" engine, it's possible for open valves to hit an upward-moving piston, resulting in a collision that could best be described as "apocalyptic.")
If the timing belt does break or jump a notch while the engine is running, the results will "interfere" in a serious way with your long-term savings plan. (Here's how it happens: in an "interference" engine, it's possible for open valves to hit an upward-moving piston, resulting in a collision that could best be described as "apocalyptic.")
08-12-2003, 05:33 PM
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Hey Jrallen, when your timing belt chain broke... did you tweak a valve? That seriously sucks if you did... I remember your post a while back when you asked about the chain breakage. 
You may have to get a head re-done... KA-Ching! Hopefully I am mistaken
You may have to get a head re-done... KA-Ching! Hopefully I am mistaken
08-12-2003, 05:47 PM
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Originally posted by WATRD
As was mentioned, yes, it is an intereference engine...
If the timing belt does break or jump a notch while the engine is running, the results will "interfere" in a serious way with your long-term savings plan. (Here's how it happens: in an "interference" engine, it's possible for open valves to hit an upward-moving piston, resulting in a collision that could best be described as "apocalyptic.")
As was mentioned, yes, it is an intereference engine...
If the timing belt does break or jump a notch while the engine is running, the results will "interfere" in a serious way with your long-term savings plan. (Here's how it happens: in an "interference" engine, it's possible for open valves to hit an upward-moving piston, resulting in a collision that could best be described as "apocalyptic.")
On the other hand, if the chain breaks at high RPM, disaster is almost a certainity.
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08-12-2003, 05:52 PM
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Originally posted by jrallan26
that suck!
that suck!
If the maintenance is kept up, i.e., timing belts or chains replaced when manufacturer recommends and so forth, it's a non-issue.
08-12-2003, 06:10 PM
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Originally posted by Glenn
This is not always true. I have heard more than one instance from reliable sources of timing chains breaking or coming off with no valvetrain or other engine damage. Much depends on the RPM the engine is turning. In the cases that I know of, the engine was idling when the chain broke. Everything was checked out at a machine shop and no damage was found.
On the other hand, if the chain breaks at high RPM, disaster is almost a certainity.
This is not always true. I have heard more than one instance from reliable sources of timing chains breaking or coming off with no valvetrain or other engine damage. Much depends on the RPM the engine is turning. In the cases that I know of, the engine was idling when the chain broke. Everything was checked out at a machine shop and no damage was found.
On the other hand, if the chain breaks at high RPM, disaster is almost a certainity.
Last edited by WATRD; 08-12-2003 at 07:35 PM.
08-12-2003, 07:58 PM
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I think 60k is the recommended interval, so I don't think that is unreasonable. I change mine out every 30k. Better safe than sorry and I have no desire to have one fail when I need it most.
08-12-2003, 08:03 PM
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Every 60k??? Is this for belts only, or also for chains? I don't think the chain on mine has ever been replaced, but I don't have the time or money to get into my engine to change it right now, but I'd like to know for future referance.
08-12-2003, 08:36 PM
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Originally posted by Plays_with_Toys
Every 60k??? Is this for belts only, or also for chains? I don't think the chain on mine has ever been replaced, but I don't have the time or money to get into my engine to change it right now, but I'd like to know for future referance.
Every 60k??? Is this for belts only, or also for chains? I don't think the chain on mine has ever been replaced, but I don't have the time or money to get into my engine to change it right now, but I'd like to know for future referance.
08-12-2003, 08:53 PM
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08-13-2003, 05:37 AM
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The 22-re is an interference engine. I have an exhaust valve sitting on my desk to remind me. The chain broke on my sister in law after she bought my 93 truck. It happened when she was starting the truck. Only minor damage. The valve was just slightly bent and the piston had a barley noticable dent. I fixed the chain and bent valve in about 8hrs. Kind of a PITA. I think if an engine (Toyota) has a belt its non interference, with a chain its inteference. There was about 130,000 miles on the truck when it happened. The 22-re doesn't have great guides or a double chain like the old 20r and 22r. You can replace the single row chain with a double from LC Engineering. Check out http://www.lcengineering.com/EngineAccs.htm . Part # 19-205 half way down the page.
08-14-2003, 02:16 PM
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!UPDATE! to my 22RE dilema
Is the motor in my 1992 Toyota 4x4 (22RE), Is it an "interference" engine or not?
Update: Just removed the head and front cover. Discovered the head is fine (no bent valves and no bad pistons). Good news! The front cover is toast! Luckily no water jackets were trashed. There is a lot of aluminum bits floating in the motor so we are going to replace the oil pump and water pump and remove the oil pan and clean it for good measure.
The breakdown is actually a blessing in disguise, the head gasket looked like it was on its last legs.
So the parts list includes:
LC Engineering dual timing chain set
LC Engineering front cover
head gasket (OEM)
oil pump (OEM)
water pump (OEM)
Gasket set (OEM)
Head Bolts (ARP)
Am I forgetting anything?
Thanks everyone for all of your help.
Jonathan
Update: Just removed the head and front cover. Discovered the head is fine (no bent valves and no bad pistons). Good news! The front cover is toast! Luckily no water jackets were trashed. There is a lot of aluminum bits floating in the motor so we are going to replace the oil pump and water pump and remove the oil pan and clean it for good measure.
The breakdown is actually a blessing in disguise, the head gasket looked like it was on its last legs.
So the parts list includes:
LC Engineering dual timing chain set
LC Engineering front cover
head gasket (OEM)
oil pump (OEM)
water pump (OEM)
Gasket set (OEM)
Head Bolts (ARP)
Am I forgetting anything?
Thanks everyone for all of your help.
Jonathan
08-14-2003, 03:06 PM
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Re: !UPDATE! to my 22RE dilema
So the parts list includes:
LC Engineering dual timing chain set
LC Engineering front cover
head gasket (OEM)
oil pump (OEM)
water pump (OEM)
Gasket set (OEM)
Head Bolts (ARP)
Am I forgetting anything?
Thanks everyone for all of your help.
Jonathan
LC Engineering dual timing chain set
LC Engineering front cover
head gasket (OEM)
oil pump (OEM)
water pump (OEM)
Gasket set (OEM)
Head Bolts (ARP)
Am I forgetting anything?
Thanks everyone for all of your help.
Jonathan
Last edited by Glenn; 08-14-2003 at 03:07 PM.
