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3.5l an interference or non-Interference engine


bapierce

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Definitely not clearly stated, though likely to be non-interference stock. Some info on the 3.5L Duratec engine:

 

http://wardsauto.com/news-amp-analysis/ford-motor-co-duratec-35-35l-dohc-v-6

http://www.supersixmotorsports.com/_pdf/cyclone-tech-v2.pdf

 

Had a topic on this forum, but no clarity there either:

 

http://www.fordedgeforum.com/topic/9007-interference-or-non-interference-engine/

 

EDIT: Updated below.

Edited by WWWPerfA_ZN0W
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Ok, so I asked a friend who works for Ford, the info isn't available easily inside either! But he pointed me to this site:

http://www.ford-taurus.org/taurusinfo/Engine/

 

From the pic & specs, it looks like it IS an interference engine. Sorry for any confusion in the earlier post.

Edited by WWWPerfA_ZN0W
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Yeah I saw that site, but then I found another forum where someone was saying that on gates.com it said the engine was a non-interference engine. I called ford and they weren't able to find anything out, it didn't say if it was or wasn't in their computer. I guess I'll do a compression test and see if everything is okay or not.

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No the sprocket is metal. Was using full sythentic 5w-20. I think I figured it out though. I think my tensioner is bad. I'm able to push it in with my hand which I don't think I should be able to. So I ordered a new timing chain and tensioner, see what that that does if the valves aren't ruined.

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  • 2 weeks later...

Got the engine out. Was more of a PITA than I expected, but was able to pull it through the top. Looking through the intake and exhaust ports, the valves look fine. And looking down through the spark plug hole the cyclinder looks good. I'll tear it apart and hopefully find out what happened.

post-27714-0-63959100-1422065532_thumb.jpg

post-27714-0-48629400-1422065552_thumb.jpg

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there's an engine support bracket on the far side of the engine. The bolts on that were really hard to get to. I had to pull the passanger side drive shaft out to get to them and it was still a pain. If you remove the rear exhaust manifold cat they would be easy to get to but it's also a pain to get to the backside nuts that hold it on.

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