Dacro Coated Bolts.

Joined
20 December 2003
Messages
2
Location
Phoenix
Hi everyone, I don't have a NSX (though I salivate over them every time I see one), but I have a Honda Insight. The reason I'm comming here is no one on the Insight forums seems to know many of the specifics of the all alluminum frame that the Insight and NSX both have in common. Not to mention they are both made in the same plant in Japan.

So here's my situation thats bothering me. At 24,000 miles on my 02 Insight my right rear shock started puking oil. I have a copy of the electronic service manual so I pulled up the diagram of the rear shocks, the top two bolts on each go in to the alluminum so they are the dacro coated bolts. It says they must be replaced with the same bolts and the way it stated it sounded like they had to be replaced once they were backed out. Also, a friend of mine had an Insight that was in a minor fender bender and when it was repaired they waited 6 weeks just to get all new dacro coated bolts from Japan so I was under the impression they had to be replaced once removed. So I showed this to the service manager and he said ok and they ordered the shocks and 4 new bolts (they replaced both shocks).

So I picked the car up and a new sheet is sitting on top of the one I brought them that they printed with "must be replaced with bolts with the same treatment" highlighted and written underneath it "replacment not necessary." Sort of like they were trying to tell me something. Now, I'm not sure whether they did go ahead and replace those bolts or not, but I'm woundering if I should worry about it. I did a search and the only thing I found said the dacro coating will hold up for about 20 times in and out if torqued properly. So I guess the question is should these bolts be replaced once removed? Is it common practice umong the NSX crowd? I just don't want to get electrolytic corrosion down the road in art that the cars alluminum frame is. Thanks.
 
I reuse the bolts. I don't clean them with a wire brush or super aggressive chemicals so they look fine to me. I also don't drive the car in the rain so it is probably a moot point. I'm also curious what other people do about these bolts.
 
I have an NSX tech training video and the tech stated that the Dacron coated bolts can be reused about eight times or so before the coating wears away. The coating on the bolt will have a very light green color to it.
 
Thanks for the replies. I feel better now. I still don't know for sure if they replaced them or not, but I guess it does not matter. I went back and looked in the service manual, the way it's worded you could determine it to be either way. In the updated manual it's stated differently that if they must be replaced use the same ones with the coating.
 
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