Engine rebuild ?

[Chad]

I'm still a bit torn between a New S2k and a used NSX, I guess the fear of getting a used NSX that has been beaten down is making me fearful. Has anyone on here had their NSX engine rebuilt, if so what did it end up costing you? I'm thinking around 10k

EDIT: Ack, posted in wrong forum, please move :/

 

[Yellow Rose]

Has anyone here had their NSX engine rebuilt, if so what did it end up costing you? I'm thinking around 10k.

Depending on what you have done to the engine, plan on $4-6000.....perhaps even more.

 

[nsxtasy]

It's worth noting that the only person I'm aware of having the engine rebuilt (out of hundreds of NSX owners that I've met) did so around 190K miles, even though it was still operating pretty normally, as I recall, and he had had nitrous on his car for quite a while. Several others have driven theirs well beyond 200K miles without a rebuild.

Rebuilding NSX engines rarely gets mentioned, even more rarely is it performed, even on NSXs with 150-250K miles on them. It's not something I would worry about. At all.

 

[4AU4LIFE]

Mine is getting done right now!

I am currently getting mine rebuilt due to circumstances beyond my control. I would be happy to report the cost of such a repair and what all was involved with it upon completion.
FYI, mine HAD 48K on it.

 

[Edwardo]

Re: Mine is getting done right now!

I am currently getting mine rebuilt due to circumstances beyond my control. I would be happy to report the cost of such a repair and what all was involved with it upon completion.
FYI, mine HAD 48K on it.

What circumstances were those?

 

[ncdogdoc]

Re: Re: Mine is getting done right now!

What circumstances were those?

Bad Boost

 

[Yellow Rose]

Not Aware

It's worth noting that the only person I'm aware of having the engine rebuilt......

It's also worth noting that you are not very aware on matters that relate to this topic.

Without doing too much thinking, I can think of seven NSX engines (not including the one you reference) that have been, or are being, rebuilt within the past year.

 

[Edwardo]

Andy,

What are the reasons for these engines being rebuilt? Are most of these FI related? Missed shift?

I have heard a couple of horror stories where some folks had bad work performed on the car and it lead to a rebuild.

Could you please be a bit more specific.

Thanks

 

[Yellow Rose]

What are the reasons for these engines being rebuilt?

I don't know exact specifics about the other NSX engines, but mine was rebuilt after metallic debris / grit (origin never confirmed) went down the intake manifold. Compression check and leakdown test indicated worn piston rings and valve seats. Upon inspection following disassembly, all six cylinders were scorn. Did not require boring the block, but enough of a significant hone job to require pistons larger than OEM.

A comment above that the culprit was "bad boost" begs clarification - was it bad boost as in too much for the engine to sustain or another parameter?

 

[nsxtasy]

Andy,

What were the mileages on the engines involved?

I think the assumption of the originator of this topic is that any NSX engine will inevitably need a rebuild after it reaches a certain number of miles. Based on my experience, that is not true - at least, not for any NSX engine that has been well maintained and has not had forced induction installed and has not been driven for an extended length of time on a high-banked oval. I have yet to hear of a single engine that fits none of those categories and has required a rebuild - regardless of mileage.

 

[4AU4LIFE]

What are the reasons for these engines being rebuilt?

I don't know exact specifics about the other NSX engines, but mine was rebuilt after metallic debris / grit (origin never confirmed) went down the intake manifold. Compression check and leakdown test indicated worn piston rings and valve seats. Upon inspection following disassembly, all six cylinders were scorn. Did not require boring the block, but enough of a significant hone job to require pistons larger than OEM.

A comment above that the culprit was "bad boost" begs clarification - was it bad boost as in too much for the engine to sustain or another parameter?

I'll tell you one thing, it WASN'T too much for engine.

 

[Yellow Rose]

What were the mileages on the engines involved?

Don't know about the others, mine was at sixty-four-five. Mine had FI at the time the grenade was launched; however, it is not conclusive if the FI kit had anything to do with the shrapnel. Could very well have been a coincidence. IMHO, I do not believe FI had anything to do with it; therefore, I respectfully (and politely) disagree with your assessment that "normally driven" NSX engines do not need rebuilding. I change my oil every 3K, do not track mine as much as you do, yet suffered an unexplained engine rebuild. Honda is a great product - but they do stub their toe every so often.

 

[nsxtasy]

I respectfully (and politely) disagree with your assessment that "normally driven" NSX engines do not need rebuilding. I change my oil every 3K, do not track mine as much as you do, yet suffered an unexplained engine rebuild. Honda is a great product - but they do stub their toe every so often.

However, since yours had 64.5K miles on it, which no one would likely call "excessive", I assume that you would also disagree with the assumption of the initiator of this post, that NSX engines will inevitably need rebuilding solely as a result of high mileage - right?

 

[Yellow Rose]

Wording Clarification

However, since yours had 64.5K miles on it, which no one would likely call "excessive", I assume that you would also disagree with the assumption of the initiator of this post, that NSX engines will inevitably need rebuilding solely as a result of high mileage - right?

The original post mentioned nothing about a high mileage engine, it said "beated down" which does not necessarily mean high mileage. In fact, it could mean a moderately mileaged NSX that may visit the track several times a year - like yours and mine. Using just these two data points with my twisted logic implies that 50% of the NSX engines need to be rebuilt. Obviously, this is an absurd assessment, but the point is that anything can happen.
I've seen the results of a 97 NSX with 8k miles on it, shatter the oil pump gears, while being driven on the street, nowhere near redline.

However, I will agree with your premise - high mileage NSX engines generally need no rebuild.

 

[nsxtasy]

So 92NSX, what is the story behind your rebuild, anyway?

 

[4AU4LIFE]

In due time.

 

[gheba_nsx]

But why do you keep on always taking out the "engine" topic when you do not want to disclose it?

 

[Yellow Rose]

Exactly.....if you have something to say, say it. Otherwise, IMO your miniature posts are not adding any factual value to this discussion.

 

[4AU4LIFE]

Exactly.....if you have something to say, say it. Otherwise, IMO your miniature posts are not adding any factual value to this discussion.

You are right. I'll keep my mouth shut.