Common Faults

[NSXGB]

I would get it done ASAP. The job can be done without removal of the timing belt so not too bad. You need a tool to hold the crank pulley while the very tight pulley bolt is removed - your local Honda dealership should have the tool. UK price for the pulley is £483.10 if your car is MT, but I would see if you can source one from Adnan or America which should be a lot cheaper. Wouldn't think you would get charged more than 1 hour labour (have to remove the aux belts too). Part number is 13811-PR7-A02

Failing that, there is a damper pulley protection plate you can buy from the USA for about $100 which installs between the CP & TB belt cover which will stop it chewing up the TB if the CP fails. Not sure how readily available they are now though.

Bad enough but could have been worse I suppose. Always try to take a positive from a negative!

Got me thinking - my car is 13yrs old / 18,000miles but still with original crank pulley.
The crank pulley went on my daily driver (BMW diesel) last year - nothing worse than 150miles on the back of a breakdown truck and a £350 bill from my local garage.
What's the approx. cost / delivery time for parts for the NSX? And how involved is the replacement - could I trust the local garage mentioned above (I've used them for years to do routine repairs on all of my cars) or does it have to be Honda (I use Phoenix Honda in Linwood, still NSX specialists, but they don't get in many in these days).
The Europe trip is only 5 weeks away...

[britlude]

http://www.ebay.co.uk/itm/Honda-NSX-...item20e07a3fe5

be aware auto and manual cars have different pulleys....

[swhatley82]

This is the Pulley I purchased from Science of Speed
http://scienceofspeed.com/products/e...kshaft_pulley/

This is the Pulley shield as a safety net for the 'what if's'
http://scienceofspeed.com/products/e...mper%5FShield/

Even if you're considering it, just get it done

[swhatley82]

Ouch, not good. Hope the rebuild goes well...are you taking the opportunity to tweak/upgrade a few things, or keeping it stock?

Crank pulley has been mentioned on here a couple of times (know Kaz is aware of the risk - he changed mine), but it's one of those things that does bear repeating - hopefully someone else will spot this tale and get it done before they have any issues.

Im obviously replacing all the bent internal parts, but I thought whilst she is open I'll do a little refresh, so here is my list...

Internal Engine Components
*ScienceofSpeed Dual Valve Spring Kit
*ScienceofSpeed Titanium Valve Spring Retainer 24 pc Set
*ScienceofSpeed Dual Valve Spring Base 24 pc Set
*ScienceofSpeed 36mm SS Intake Valve Set
*ScienceofSpeed 30mm Inconel Exhaust Valve Set
*ScienceofSpeed Multi-layer Stainless Steel Head Gasket
*ScienceofSpeed Lost Motion Assembly (LMA) Kit



Intake & Exhaust
*Gruppe M V3 Exhaust (Already fitted)
*Decatted (Already completed)
*Comptech Sport Header System
*Downforce Stack Carbon Fiber Intake System
*ScienceofSpeed Over-Bore Throttle Body


Chassis Reinforcement
*Honda JDM Rear Lower NSX-R Lower Chassis Reinforcement Bar
*Honda NSX-R Front Upper Chassis Bar & Bracket Kit
*ScienceofSpeed NSX-R Chassis Bar Spacer Kit
*ScienceofSpeed Adjustable Anti-Sway Bars
*Cedar Ridge Fabrication Sway Bar End Links, front pair & rear pair with turnbuckle
*Okuyama Rear Shock Tower Brace

Suspention & Bushing
*KW V3 adjustable suspension
*Cedar Ridge Non-Compliance Front Pivot Clamps
*ScienceofSpeed Steering Rack Bushing Kit
*ScienceofSpeed Non-Compliance Toe-Links
*ScienceofSpeed Non-Compliance Rear Beam Bushings Kit

Engine Management
*Full remap once all items are installed

Misc items
*ScienceofSpeed Engine Hatch Struts (pair)

*Shorai super lightweight battery (Only 7lbs including casing)

[andystevo]

Thanks for the links guys.
I've just bought the pulley advertised on ebay - the part number checks out ok.
I called Phoenix Honda, who quoted £620 all-in but said the pulley is on back order and unlikely to be available before end June.

[Mistercorn]

The pulley shield looks like a very good idea, at a reasonable cost. This is something I will be doing as soon as I get a car to do it on. One to ask about when buying a car as well. This is exactly the sort of information that I look for as a prospective owner, I'm sorry it has come about through your unexpected opportunity for improvement on your car though swhatley82.

MC

[WhyOne?]

I should be used to this by now but goodness, that is a big price difference between the US and UK for the crank pulley.

[Kaz-kzukNA1]

Interesting enough, I posted this photo in my blog yesterday morning.

By now, most of the NSX owners are aware of the common faults and weak points of our NSX but if you are a new owner within the last few years or thinking of buying one, then probably not familiar with these well known issues.

(By the way, swhatley82, if you are thinking of writing your own NSX build thread, you may want to change the subject title to represent your NSX.)

Since this is your 'Build' thread, I won’t go into too much detail but please replace the crank pulley at the time of every TB service regardless of the annual mileage.
In Japan, it is a must item to be replaced at the time of every TB service at any NSX specialists.

The shape, design, feature are different between MT and AT model so it’s hard to tell when exactly it’s going to fail but you can do a quick check by looking at it from above as described in the following link.
Parts No. difference between the MT and AT are also included.
http://www.nsxcb.co.uk/showthread.ph...2032#post72032


The story behind the crank pulley and my view on the crank pulley shield.
http://www.nsxcb.co.uk/showthread.ph...4144#post74144

It's not just acting as the damper but also it's there to shift the resonance frequency for TB protection so while you can install the shield, it's best replacing it regularly and never allow it to fail.


As mentioned at the beginning, if you are a new owner or thinking of buying one, you may want to go through the items in my NSX Technical and Service Information Index and the same information Index No.2 that will cover major points of our NSX.


I ordered new one from Japan last week so at least it was in stock at that time.
For the removal/installation, it will require different locking tool between MT and AT spec.
Please make sure to treat the crank pulley bolt per the workshop manual on installation. Otherwise, it will seize and you will have big time when trying to loosen it next time.

It can be replaced at any time without touching the TB related parts so no need to open the engine.
Please replace two AUX belts (ACG & A/C) at the same time if these were not replaced at the time of last TB service or within the last several years.

I better stop now as it's getting too long for your build thread......

Kaz

[swhatley82]

Interesting enough, I posted this photo in my blog yesterday morning.

By now, most of the NSX owners are aware of the common faults and weak points of our NSX but if you are a new owner within the last few years or thinking of buying one, then probably not familiar with these well known issues.

(By the way, swhatley82, if you are thinking of writing your own NSX build thread, you may want to change the subject title to represent your NSX.)

Since this is your 'Build' thread, I won’t go into too much detail but please replace the crank pulley at the time of every TB service regardless of the annual mileage.
In Japan, it is a must item to be replaced at the time of every TB service at any NSX specialists.

The shape, design, feature are different between MT and AT model so it’s hard to tell when exactly it’s going to fail but you can do a quick check by looking at it from above as described in the following link.
Parts No. difference between the MT and AT are also included.
http://www.nsxcb.co.uk/showthread.ph...2032#post72032


The story behind the crank pulley and my view on the crank pulley shield.
http://www.nsxcb.co.uk/showthread.ph...4144#post74144

It's not just acting as the damper but also it's there to shift the resonance frequency for TB protection so while you can install the shield, it's best replacing it regularly and never allow it to fail.


As mentioned at the beginning, if you are a new owner or thinking of buying one, you may want to go through the items in my NSX Technical and Service Information Index and the same information Index No.2 that will cover major points of our NSX.


I ordered new one from Japan last week so at least it was in stock at that time.
For the removal/installation, it will require different locking tool between MT and AT spec.
Please make sure to treat the crank pulley bolt per the workshop manual on installation. Otherwise, it will seize and you will have big time when trying to loosen it next time.

It can be replaced at any time without touching the TB related parts so no need to open the engine.
Please replace two AUX belts (ACG & A/C) at the same time if these were not replaced at the time of last TB service or within the last several years.

I better stop now as it's getting too long for your build thread......

Kaz

Once again Kaz, your words of wisdom are welcome on any thread, maybe I should have started two, one for the problem/issue and one for the future build, but hey-ho.

Once I get the pictures back from the garage, I will post the pictures of the damaged Crank pulley & the slightly bent valves.

[NSXGB]

Maybe we should move this thread into the 'Prospective New Owner' board?

http://www.nsxcb.co.uk/showthread.ph...-Common-Faults