Yeas on the roof, but it looks like the OEM NSX-R Showa suspension to me???Quote:
Originally Posted by Sudesh
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Yeas on the roof, but it looks like the OEM NSX-R Showa suspension to me???Quote:
Originally Posted by Sudesh
I do, and I know where it is too :cool:, and its not the one in the photos as you've both worked out.Quote:
Originally Posted by Sudesh
Hi Kaz,
Many Thanx for making time to look after my NSX earlier this week. Gearbox feels sweet with the fresh fluid. See you later in the year.
regards,
Paul
Kaz, thanks for the explanation on the gearbox oil. I've read somewhere that MTF II is semi-, MTF III is fully synthetic but not an earthshaking difference. The later one solved a problem with foaming at higher speeds.Quote:
Originally Posted by Kaz-kzukNA1
Do you have more infos on the MOT in Japan? How strict are they? Replacing parts by the law? Wow!
The Japanese MOT is called Shaken and is quite strict, I learned this from many vehicles I imported from Japan.
If you google Shaken you will get allot of info. But here is some links
http://en.wikipedia.org/wiki/Motor-v...pection_(Japan)
http://ezinearticles.com/?The-Shaken...pan&id=2196157
Quote:
Originally Posted by goldnsx
Hi, Paul. Thank you for visiting my place the other day.
Have a nice time over the weekend.
Hi, all.
Recently, I was asked from many owners to carry out the Timing Belt (TB) and Water Pump (WP) service together with the Valve Clearance adjustment.
I have done this on nearly 100 NSXs and stopped counting thereafter. I also learnt so called 'Engine Refresh' process from my master on many occasions.
In Japan, even just for the TB service, most of the NSX specialists will take out the engine.
This is because quite often, the owner would like to carry out additional processes at the time of TB service and also, due to these extra processes, it would be faster and most importantly, more accurate and easier to carry out the services while the engine is out of the engine bay.
At this stage, I don’t have air curtain nor access to the clean air room for the engine refresh and thus, I won’t be able to carry out the level of services that I want to offer.
In Japan, the TB service interval is based only on the mileage (every 62,500 miles, 100,000km) and not by the age.
Therefore, some owners will carry it out after 5 years and others may carry it out after more than 10 – 15 years until they have reached the specified service mileage.
Having said this, most of the owners seemed to carry it out before exceeding the 10 years time.
Based on my experience and the engine refresh service carried out by many NSX specialists in Japan, following is the list of the parts that will be prepared/replaced during my service at this stage.
These are more than twice the amount of the parts that will be replaced during the standard TB service at the main dealer.
As a personal opinion, any services should be tailored for each NSX especially for a classic car like our NSX.
Some NSX may require extra parts due to rust, corrosion, fatigue, etc whereas others may not require them to be replaced.
Therefore, please note that following list is just a reference only to show the example of my service carried out recently.
Your NSX may not require all of these parts or may require different parts.
Each NSX will need tailor made parts list as there are several differences between MT/AT, earlier/later models, RHD/LHD and etc.
The service will start by talking to the owner.
For every NSX, it is important to first find out whether the owner felt any vibration, idling issue, spun off the track, missed downshift/over-revved the engine in the past, etc or not.
I always carry out Compression test before start of the TB/WP services.
Eng Refresh Service
PFR6G-11, 6L-11: NGK spark plug x 6, every 60K miles. Heat rating #7 for certain year model.
91302-GE0-000 x 3 : O-ring, post #347. 2 x dowel pin under #1 cam holder, 1 x oil dip stick tube.
91318-PY3-000 : O-ring, figure of '8'
12030-PR7-010 x 2 : Packing set, Head cover
12351-PR7-A00 : Packing C, Front head cover
12352-PR7-A00 : Packing C, Rear head cover
12511-PR7-A00 : Packing, Front IGN Coil cover
12521-PR7-A00 : Packing, Rear IGN Coil cover
12513-PR7-A00 x 4 : Rubber comp, Camshaft Black cap
91213-PR7-A01 x 4 : Oil seal, Camshaft brown seal
14510-PR7-A01 : Adjuster comp, timing belt
90016-P0G-A00 : Bolt, special, timing belt adjuster
90401-634-000 : Rubber, timing belt adjuster
14516-PR7-A00 : Spring comp, timing belt
14400-PR7-A01 : Belt kit, timing. Not great package. Prefers 06141-PR7-305 from Japan.
31110-PR7-A05 : Belt, ACG MT. For AT, -A12
38920-PR7-A05 : Belt, A/C compressor
19200-PR7-305 : Pump assy, water. Comes with lower cover and rubber grommet.
In Japan, it's cheaper to order them separately as three parts.
11841-PR7-A00 : Packing, timing belt lower cover
11842-PR7-A00 : Packing A, timing belt front mid cover
11843-PR7-A00 : Packing B, timing belt front mid cover
11844-PR7-A00 : Packing A, timing belt rear mid cover
11845-PR7-A00 : Packing B, timing belt rear mid cover
90049-PH7-000 x 2 : Bolt flange, 8x25. Water pump
90052-PH7-000 x 7 : Bolt flange, 6x22. Water pump
19012-PD2-004 x 2 : O-ring. Radiator drain plug and bleeder
90471-580-000 x 2 : Packing 8mm. Floor centre, Water pipe
13811-PR7-A02 : Crank pulley, MT. For AT, -A11.
95701-06035-08 x 2 : Bolt, flange 6x35. TB cover bolt, long, upper
95701-06022-08 x 11 : Bolt, flange 6 x 22. TB cover bolt, short
90428-PD6-003 x 2 : Fuel line sealing washer
18393-SH3-S00 x 2 : for 3 bolt style OEM CAT only.
For other year model or aftermarket ones, check the spec.
Brake line washer x 4
19511-PR7-A01 x 4 : hose cramp, large
19506-PR7-A01 : coolant hose, white marking
19507-PR7-A01 : coolant hose, yellow marking
79728-SL0-A00 : coolant hose, inlet
90661-SL0-A01 x 2 : hose cramp, pre-set
19422-PR7-A01 : coolant hose, oil cooler
19423-PR7-A00 : coolant hose, oil cooler
19513-PE0-003 x 4 : hose cramp, strong
08CLA-G01-8L0 x 3 or 4: Type 2 Coolant
15400-PL2-505 : Oil Filter
Engine Oil x 5.0L + extra : Mobil 1 0W-40
Brake fluid x about 1.0L : DOT4
91212-PR7-A01 : Crank seal
[37840-PR7-A03 : Sensor assy, cyl/crk. Replace if potting melted a lot.]
11865-PR7-A00 : Packing A, front timing belt cover plate
11866-PR7-A00 : Packing B, front timing belt cover plate
11867-PR7-A00 : Packing C, front timing belt cover plate
11875-PR7-A00 : Packing A, rear timing belt cover plate
11876-PR7-A00 : Packing B, rear timing belt cover plate
11877-PR7-A00 : Packing C, rear timing belt cover plate
LMA and VTEC Spool valve service
12209-PR3-000 x 4 : Washer, sealing 20mm.
14820-PCB-305 x12 : Lost Motion Assy. long life
91306-PJ4-000 x 4 : O-ring, 608x1.9. Rocker shaft oil olifice
15825-PR3-005 x 2 : Filter assy, spool valve. Check Eng No., 94 model. Later spec: 15825-P08-005
36172-PR3-005 x 2 : Filter assy, solenoid. Check Eng No., 94 model. Later spec: 36172-P08-015
91302-PR7-A00 : O-ring, 13.8x1.9. Oil press sender
95701-06018-08 x 6 : Bolt, 6 x 18
95701-06030-08 x 6 : Bolt, 6 x 30
Oil Pan service (removal of front exh pipe/header required)
11251-P0G-A00 : Packing, oil pan, softer rubber than the original design, later spec
11200-PR7-A01 : Oil Pan
95701-06018-08 x 10 - 18 : Bolt, 6 x 18, same one as VTEC spool valve. Total 18 used.
94050-06080 x 4 : nut, total 4 used.
Parts around exh pipe/header to be reviewed. Metal gasket, heat treated nut, etc
Valve clearance adjusted.
Compression test after the service.
Replace all coolant hoses, hose clamps, thermostat, header tank, tank cap, etc, if required.
Addition to the above, you may want to consider replacing the followings but some of the parts doesn't need to be done at the time of TB service.
[Edit: These are more like engine refresh than TB/WP service and thus, not included as a standard service.]
Please make sure to replace the Oil pump if you have ever over-revved the engine in the past.
In Japan, I saw at least three NSX engine failures due to the cracked oil pump.
Just over 8,000rpm, there is a resonance vibration point on the internal oil pump parts.
The crack could happen immediately at the time of over-rev or sometimes, at later date.
15100-PR7-J21 : Pump assy, Oil. If over-revved the engine.
91312-PR7-A00 : O-ring, 22x2.4. Oil strainer, oil pump service
91308-PH7-003 : O-ring, oil joint. Oil path pipe, oil pump service
91309-PH7-000 : O-ring, 17.4x3.5. Oil path pipe, oil pump service
Some photos to follow;
"In Japan, the TB service interval is based only on the mileage (every 62,500 miles, 100,000km) and not by the age.
Therefore, some owners will carry it out after 5 years and others may carry it out after more than 10 – 15 years until they have reached the specified service mileage.
Having said this, most of the owners seemed to carry it out before exceeding the 10 years time."
That is really interesting.Why don't the Japanese consider it neccessary to replace the belt after 6 or 7 years ?
I have been reading a thread on Prime about belt replacment and one of the contributors argues that a 20 year old car with only 20k miles should not need the belt replacing.Another point he makes is that when you buy a "new" belt from Honda or a parts dealer,it could be older than the belt you are replacing.
Thoughts?
The photo of the parts;
Attachment 7275 Attachment 7276
The spark plug
Unlike other aftermarket ones, this model is good for nearly 62,500miles so on this NSX, I didn't replace them as the mileage was still very low.
The O-rings, 8mm aluminium washer and the rubber seal for the TB adjuster bolt
Two for the dowel pin under each #1 camshaft holder at Front and Rear bank. Same one at the base of Oil Level gauge dip stick tube.
Figure of eight one for the Oil cooler base.
Two for the radiator drain and bleeder plugs.
Two aluminium 8mm packings for the centre floor coolant pipes.
And the Rubber seal at the TB adjuster bolt. It's easier to simply just break it than tryiing to re-use it on removal. Sometimes, people forgets to install this after the TB service. Very important to prevent debris and moisture/oil getting inside the TB cover.
Attachment 7277 Attachment 7278
Head cover packing set
You need one each for the Front and Rear covers.
The set comes with one cover packing, three spark plug hole seals, six cover washer. You must replace all of these if you removed the head cover otherwise, you won't get tight seal and will end up with oil leaking/seeping from many places. If you use small amount of Honda bond/liquid gasket to hold the packing/seals in place (which I do), make sure to do it well in advance as normally, it will take few hours for the liquid gasket to set.
Attachment 7279
Packing C at the head cover, Packing A & B at front and rear mid covers
The thin packing at the head cover that sits on top of each mid covers surrounding the TB and cam gears.
Two rubber seals each at the front and rear mid cover. I always replace them as they are so important to keep any oil away from the TB.
Attachment 7280 Attachment 7281
The all important rubber packing at the Front and Rear IGN Coil cover
Always replace them at the TB service and regularly apply silicone grease to keep good seal especially at the rear bank. Famous for causing misfire due to moisture at the rear bank causing IGN Coil body to get rusty and even crack. Sometimes, you can even get rust at the HEX part of the spark plugs.
Camshaft Black CAP and Brown seal
For the camshaft, it requires high accuracy true centred circle to keep the correct oil clearance at each camshaft holders so during the manufacturing process, it will use line boring method. Thus, you need something to seal both edge at the engine head where the jig went through.
The black cap at the spool valve side and the brown one at the TB side. Make sure to check the orientation of brown one before installing it on the camshaft.
Attachment 7282 Attachment 7283
TB tension adjuster, adjuster spring and the adjuster bolt
Adjuster has built-in bearing so I always replace it.
You can probably re-use the spring as once the tension has been adjusted, the adjuster is secured by the bolt and not by the spring.
However, as I have never tested the fatigue rate of this spring under hot condition and since it's not an expensive parts, I just replace it every time.
You can re-use the adjuster bolt but quite often, the head section gets very rusty as it sits outside of TB cover. Hence, the importance of rubber seal shown before to seal the gap between the bolt head and the TB cover.
Attachment 7284 Attachment 7285
The Timing Belt (TB)
Originally, it was using the same parts #06141-PR7-305 for both UK and Japan, but it was superseded to #14400-PR7-A01 in UK. Japan stayed with the original #.
Although the actual TB is the same between the two parts #, the kit for Japan comes with some special sticker to show when and at what mileage the TB service was carried out. This sticker and cover seal are placed at the door sill just below another white sticker showing the tyre pressure information.
Even with these extra bits, it's cheaper than HUK price so why not.
The actual TB inside the Japanese kit. Exactly the same TB that you can find in UK. Same parts # printed on the belt.
Attachment 7286
The AUX Belts, for the ACG and the A/C compressor
For the ACG one be careful with the parts # between MT and AT.
Attachment 7287
The packing for the TB Lower cover
This doesn't come with the replacement TB Lower cover which is included in the Water Pump kit described below. You must order this separately.
As same as the rubber seals on the TB mid covers, this is one of the most important seal that protects the TB from Oil and debris so I strognly recommend replacing this one. Quite often, you will see engine oil blocked by this seal at the front side.
Attachment 7288
The Water Pump kit
Comes with the water pump, new TB lower cover and the rubber grommet for the coolant seeping tube.
By now, most of the members are aware that the water pump and TB lower cover design were changed over the years. Because of this, even you just order the water pump, it comes with these extra bits. I heard that you can now order just the water pump since later models are already equipped with the new design TB lower cover but I haven't tried it yet because I would like to replace the lower cover any way.
Attachment 7289
The bolts for the Water Pump
You can re-use them if you clean them and apply Honda Bond/liquid gasket but considering the price of new one and the time required to remove the old red seal lock, I normallu just replace them with the new ones.
Two larger one and seven smaller one required.
Attachment 7290 Attachment 7291
Crank Pulley
Another MUST replace item.
We all heard the story by now so no need to repeat it.
It's on back order in Japan at the moment....
Please be careful with the Parts # between MT and AT. Very early Acura MT model requries VIN check as some of them were using AT type pulley.
Attachment 7293
Honda Type-2 Coolant
Used to be in white container but now comes in black one. Also, little bit more extra amount contained so now I only need to buy three of them instead of four.
Attachment 7292
TB cover bolt, short one
Most of them can be re-used but sometimes, you get heavy corrosion on the lower ones so best to keep some spares before start of the service. Top two ones are longer than the rest.
So, above are the parts for my standard TB, WP, Valve clearance services.
Once again, please note that these are just reference only and it would be different from yours due to the spec of NSX, service concept, level of services, service procedure and so on.
Some of the photos from actual service to follow.
Regards,
Kaz