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  #1  
Old 06-03-2006, 07:09 PM
Ken92SVX Ken92SVX is offline
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Is the SVX engine an interference engine or non-interference engine?

I was wondering if the SVX engine is an interference engine? In other words if the timing belt were to break would it damage the engine?
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  #2  
Old 06-03-2006, 08:03 PM
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The SVX has a noninterferance engine.
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  #3  
Old 06-03-2006, 08:56 PM
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EG33 is pretty much a pre-1997 EJ22 with two more pistons. This makes it a non-interference engine. (Like was said above).
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  #4  
Old 06-07-2006, 09:58 PM
Ken92SVX Ken92SVX is offline
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Non interferrence engine

Thanks for the replys,
I was hoping the SVX engine is a non interferrence engine. I had already torn into replacing the timing belt and was waiting for my parts to arrive from UPS but they were delayed two days. Got the new timing belt in and checked the old one. It was time to replace it, because it was started to separate in one area. I am not sure hwo many miles were on that belt as I just got the car a month ago.
Ken
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  #5  
Old 06-07-2006, 10:13 PM
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When you replace it, you will know when it was changed. That is a good way to know what has been done to it. Good luck.
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  #6  
Old 06-11-2006, 03:10 PM
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I seem to remember Subaru telling a member of this site that the SVX did not have a non-interference engine. If the timing belt breaks, it's highly unlikely that the valves will contact the pistons, but technically the valves could hit eachother.

Granted, it would have to take something pretty catastrophic for that to happen, and if it did you probably wouldn't be worried about the valves crashing into eachother.

When it comes to timing belt breakage, the EG33 is non-interference, but Subaru might tell you it is not.

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  #7  
Old 06-11-2006, 06:59 PM
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Quote:
Originally Posted by Mr. Pockets
I seem to remember Subaru telling a member of this site that the SVX did not have a non-interference engine. If the timing belt breaks, it's highly unlikely that the valves will contact the pistons, but technically the valves could hit eachother.

Granted, it would have to take something pretty catastrophic for that to happen, and if it did you probably wouldn't be worried about the valves crashing into eachother.

When it comes to timing belt breakage, the EG33 is non-interference, but Subaru might tell you it is not.

Technically, as the camshafts are gear driven, in effect mechanically locked together, a broken timing belt in itself could not cause contact between the valves. Could Subaru have been covering themselves against possible sticking or bent valves, even if this is highly unlikely? Or is this simply an ongoing, unfounded, rumor?
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  #8  
Old 06-11-2006, 11:39 PM
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Quote:
Originally Posted by Ken92SVX
Thanks for the replys,
I was hoping the SVX engine is a non interferrence engine. I had already torn into replacing the timing belt and was waiting for my parts to arrive from UPS but they were delayed two days. Got the new timing belt in and checked the old one. It was time to replace it, because it was started to separate in one area. I am not sure hwo many miles were on that belt as I just got the car a month ago.
Ken
If you want to play it safely (even though we are 100% sure it is a non interfierent engine), when installing the timing belt, turn the crank pulley a full engine turn with the related tool and check if it interfieres. You will also be able to check if all marks are correct.
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  #9  
Old 06-12-2006, 08:03 AM
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Quote:
Originally Posted by Trevor
Technically, as the camshafts are gear driven, in effect mechanically locked together, a broken timing belt in itself could not cause contact between the valves. Could Subaru have been covering themselves against possible sticking or bent valves, even if this is highly unlikely?
Yes, that seems to have been the case. As you said, it's highly unlikely. Something catastrophic would really have to happen.
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