Mine was done, just before I got it at 23k miles. I am NEVER going to change the belt again and drive it at least until it hits 200k miles. I'll let you know what happens in 20 years.:smile:
I had emailed a NSX timing belt question to Pat Goss (of Motorweek) radio show about 10 years ago and here's what he had to say.
http://www.youtube.com/watch?v=ukXi83cAofU
I've been wondering what you look like Pbassjoe.....now i know and it is so nice of you to write Larry in your own words - do you need someone to finish your sentence for you??? We'd all be glad to lend you a hand.
Sounds like you might need a little help; but I know you'd rather carry on by yourself, but thanks for the offer. You can go back to sleep now....:wink::biggrin:
So, still no examleof a broken belt????
McFly???
There is no way to determine the age of the replacement belt. However, the timing belt is exclusive to the NSX, so unless a dealer is one of the handful of dealers who work on NSXs all the time, they probably don't keep them in stock, and order them only when actually needed for a specific customer. (And if it's a dealer that works on them all the time, they still probably only keep a few in stock, and their inventory turns over quickly.) So you're almost always getting one that was, until very recently, sitting in a temperature- and humidity-controlled Honda warehouse. If you're questioning how long it takes Honda to go through and re-order their warehouse inventory, I don't know, but I would assume they have computer programs that replenish it on a timely basis and don't have a lot of money tied up in parts that sit around for years.It is conceivable that a replacement belt may have been sitting on a shelf somewhere aging away. I wonder if age of the replacement belt could be determined and if not, what, if any, consideration should one put on this potential question mark.
In Japan, the TB service interval is based only on the mileage (every 62,500 miles, 100,000km) and not by the age.
Yep, I am one of those guys you read about. Original owner of a 1993 with 15,100 miles and no TB change. Yet. Have appointment with Larry B. this month and I am trailering my car to his shop. Heck, I don't even want to start it to put it in the trailer. I have always attempted to drive the car smoothly, not slowly, but I feel very fortunate that nothing bad has happened so far.
One interesting note that has come up in discussions on this topic is the age of the replacement belt from its 'born on date'. It is conceivable that a replacement belt may have been sitting on a shelf somewhere aging away. I wonder if age of the replacement belt could be determined and if not, what, if any, consideration should one put on this potential question mark.
So, still no examleof a broken belt????
McFly???
In Japan, the TB service interval is based only on the mileage (every 62,500 miles, 100,000km) and not by the age.
Are you saying that the service manual written in Japanese does not mention a time interval for the NSX timing belt replacement? Would you be so kind as to elaborate. Thanks.
By the way, my car is a '91 and had only 45k on it when this happened. I'm the second owner since '94, and I think the car previously sat unused for a couple of years before I took over. Maybe that's why the belt went kablewy prematurely.
A handful of people say they don't know anyone with a broken belt and people are ready to believe the failure rate is zero? Come on.
I personally know of a few that have broken. So do most mechanics who deal with a lot of NSXs.
Every belt will eventually fail. The manufacturer gives a maintenance interval at which they recommend replacing the belt. Obviously this interval is well before they expect any signifigant number to break under normal use. How much beyond that interval you want to go is up to you; it's your car.
Yes, I am also very interested in it external appearance as well, even though the general consensus from what I have been reading here is that appearance is not a valid indicator of condition. I have also wondered about some sort of calibrated destructive test on the old belt to see at what tension it failed. Not that it would have any applicability to actual use in the engine, but its just something that crossed my mind.
I will report back the findings after Larry B performs the required operation on my unmolested original engine. I have read that twisting the belt listening for internal cracking sounds of belts is one indicator of soundness, as well as missing teeth, radial cracks, etc, but we shall see.
Please post macro picture of the inside and outside of the belt before the twisting and after the twisting. Thanks,
Y'all got Bromley holding his breath. LOL!
A simple search would have yielded this thread:
http://www.nsxprime.com/forums/showthread.php?t=66954
Hardly - haven't turned blue yet... - did you bother to read this thread you posted or just the the excerpt you put here? Obviously this guy had his car at a shop that did lousy work! Not that this was the only reason it broke because it was 12 or so years old - but there is some question as to whether the belt was actually replaced. I believe the most interesting part of it was that the shop that had been working on his car may have been the very cause of the belt breaking - could it have been that they installed the new belt improperly??? MMMMMM - we'll probably never know. It is surely obvious they did a lot of things wrong - what else??? Is this the best example you could find of a real incident. Good snooping.
Or how about this from Lud in 2003:
http://www.nsxprime.com/forums/showpost.php?p=70819&postcount=17
When a parrot talks it's not a opinion. It doesn't really know what it's saying or "talking" about. The parrot just liked the sound of something it heard and repeats it, over and over and over...:biggrin:
Pretty sure he is not "recommending" an extension to the manufacturers service interval.Bromley, if you're not going to back up your recommendation by paying for the broken belt (and $10k worth of damage should the unthinkable happen), then don't recommend an extension beyond the manufacturer's service interval. Plain and simple.
You called my search, "sleuthing." lol. All I did was one search. You should try it before you type up a bunch of nonsense. That's the first lesson everyone learns here: the car is 20 years old, so if you have a question, search for it because it's likely been answered already.