Hello. I am suspecting my 93 Accord tensioner bolt is rounded. I tried to change the timing belt a few years ago and couldn't get the tensioner bolt off so I gave up and gave it to a mechanic. I think it hasn't been changed. Does anyone know if any old 14mm bolt of the correct length will fit? Or is it a special type of bolt. Does anyone have details about the bolt? Part number etc. I ask this in case I have to cut it off. Thanks.

 

I wouldn't cut it off if I could help it, I would use an extractor socket:

It is a 14mm, I would think if using a decent grade bolt and not zinc or anything odd it shouldn't matter.

 

If you are talking about the bolt that is visible from the outside face of the timing cover and is holding down the two (timing and balance) pulleys in place, it is a specialty fastener, consisting of a stud and nut.

Bolt, Timing Belt Adjuster
90016-PT0-000

Nut (10MM)
90216-P0A-000

If that is not what you are looking for, if you click on this link; click here it will take you to a diagram and parts list off everything timing that you would require.

 

thanks guys for the help. I remember I couldn't get the timing belt off that's why I put it back together. So would it be the bolt or nut that actually holds the tensioner in position that I may have rounded?

 

Good question, because when I look at the chart, it almost looks like there is no end to it. Meaning, I thought it was a straight bolt with threads and a end cap nut on it for adjusting. But now it looks like, it's a stud that should have a nut cap on the end of it. But the chart doesn't indicate it. Does that actually have to be moved from the whole block if that END CAP nut gets stripped? Can't you cut off and just put another one on there? I don't know, I never had good luck with those honda charts on those part diagrams. Especially with power steering lines/hoses (they of course don't sell them anymore and mechanics lie and say they can't build another one). Because the line is smaller. YES YOU CAN!

I can also tell you that amazon link to that bolt extractors is not going to work (Maybe some boring referral trick). Because although, those sockets have groves on it where you can get a wrench on it. Well, you don't have enough room to slip a socket on. You need a insert. I'm wondering if it's just a nut cap that they aren't showing in the picture that you can just cut it off?

The Haynes manual is pretty crappy not even telling you what wrench to use. There have been two 90-93 timing belt videos. One just has highlights, and he just totally skips that step. The other one, they have a guy just explaining how he did it, he never replaced it the actual tensioner, or any seals. Does the whole bolt come off?

So most of the videos of 90-93 are just incomplete and low quality. T

So if someone is doing a complete timing belt procedure, it's very frustrating for people not to show the complete procedure for at least the aisin kit you get. It's common practice for them not to give you bolts when you order parts. But if it's a special bolt or a bolt that has known to get stripped for a lot of people. They should at least include it. Not to mention the timing marks are completely different from the instructions. UP on the camshaft doesn't mean completely UP, perfectly vertical. No, it's almost like it's been timed to be way more to the the right and not perfectly straight at a up angle. If you are to line up the crankshaft on the bottom aligned to the up arrow. Yeah, this job has been a complete nightmare to figure everything out. You couldn't find the previous tiny timing marks. They are secret notches on the camshaft pulley (left and right). And they don't align to an arrow anywhere to be seen.

 

Okay, oops. I figured it out. That is a nut that is apparently suppose to be a 14mm that connects to the tensioner bolt. And I didn't really notice this, that's why I didn't understand the chart. It does stick out of the lower timing belt cover. It does connect to threads in the stud. And the other side of the bolt has it's own threads that go into the block. Only strange thing, is maybe Honda just did an alternative replacement and just made it 10mm for it's replacement part. I have been looking at old videos. And this seems to be the case. And I found another video. This guy also indicates that he rounded off the bolt as well.

If only they were smart enough to include that in the AISIN kit. I really should have never bought the kit. If I only knew before I started this, I had made my own thread but no one warned me .

 

Can you have this timing tensioner nut custom made? Having a hard time finding one.

 

Its pretty much the same nut used from 1990-2002 on SOHC F series engines.
That's 13 years. If desperate enough someone could probably mail you one.