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TopLess

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Everything posted by TopLess

  1. 80% turbos 15% PCV 5% Cracked piston land Or you may have overfilled with oil?
  2. Just a safety precaution, is you can disable the fuel pump with conzult/fuse to reduce pressurised fuel spraying around and also disconnect the battery to stop accidental starting during work.
  3. Not sure if you use Bluecol longlife on zeds as the statement above is ambiguous, double negatives ? I have done my bit and found coolants that are unsuitable for the zed and some that are, and I have also asked a couple of Nissan dealers and they don't sell a long life antifreeze for the zed! You are saying all long life coolants are not the same so that doesn't rule them all out, it might be poignant for you to find a long life coolant suitable for the zed and let us know? JFYI it was a revised service notice from Nissan Head Office and not main dealer training, as in the quote below. I believe I have addressed any confusion, and I do hope the passionate nature of your replies is not indicative of any negativity, my only objective is to try and help zed owners via some research?
  4. I hope this post ends all the confusion that has descended on this this thread. I was concerned over the newer OAT (Organic Acid Technology) potentially causing problems on the cooling system on the zed, and my initial investigations seemed to confirm my worries. There has been questions about the issues on this thread and so I decided to delve a little deeper, after some people recommending a long life OAT type antifreeze. I put in 300ZX into the Comma website and it came up as recommending a traditional short life antifreeze, = NON OAT Jeff you argued your corner and vouched for the bluecol longlife antifreeze. So I contacted Bluecol to see what the experts themselves recommend for the zed, and here is our conversation! Like I said, I doubt if anyone on here has a PhD in Coolant, and hopefully this will help make some zeds a bit more reliable.
  5. To be truthful I am somewhat worried about upgrading in case the new one isn't as good lol
  6. There are also problems with the heater matrix, pipe work corroding and in some case radiators getting blocked but this could be electrolysis or unsuitable antifreeze or a combination of both.
  7. This is the one recommended by Comma and doesn't use organic acids in it's make up. http://www.commaoil.com/productsguide/view/6/353 Also if you look at this Bluecol extended life product it says not for use with classic cars, but whether the Z32 falls into this category is another matter! http://www.bluecol.co.uk/index.cfm?product=111
  8. Jeff neither one of us has a PhD in antifreeze and I am sure you have made the right decision for your cars. My concern is of the corrosion you often see on zed engines and maybe identifying the type of antifreeze as a potential problem. I am sure the only people who can adamantly say whether one type is suited to their car is the manufacturer. But if you do a search for OAT antifreeze and silicon you will see references to this type of antifreeze and silicon seals not getting along. I personally have nothing to gain or fear from whatever antifreeze anyone uses, my only objective is to help zed owners make their cars a little more reliable and maybe this might be something that can do that.
  9. I am sure all your cars will be absolutely fine. Last time I talked to a Nissan Mechanic trained on the 300ZX, he said Nissan changed the service interval on flushing the cooling system to once a year, which would indicate using shorter life antifreeze. There are also other reports of the longer life antifreeze attacking silicon sealant and rad caps seals are sometimes silicon based. My concern is of the corrosive nature of some of the antifreezes (not with mixing different types) and it is evident on quite a few cars, here is some info from Wikipedia, I always find manufacturers sites a little optimistic. "Organic acid technology Certain cars are built with Organic Acid Technology (OAT) antifreeze (e.g., DEX-COOL[11]), or with a Hybrid Organic Acid Technology (HOAT) formulation (e.g., Zerex G-05[12]), both of which are claimed to have an extended service life of five years or 240,000 km (150,000 miles). DEX-COOL specifically has caused controversy. Litigation has linked it with intake manifold gasket failures in GM's 3.1L and 3.4L engines, and with other failures in 3.8L & 4.3L engines. Class action lawsuits were registered in several states, and in Canada,[13] to address some of these claims. The first of these to reach a decision was in Missouri where a settlement was announced early in December, 2007.[14] Late in March 2008, GM agreed to compensate complainants in the remaining 49 states.[15] There are rumors that mixing DEX-COOL with standard green (non-OAT) coolant causes a chemical reaction that produces sludge in the cooling system. According to the DEX-COOL manufacturer, however, "mixing a 'green' [non-OAT] coolant with DEX-COOL reduces the batch’s change interval to 2 years or 30,000 miles, but will otherwise cause no damage to the engine."[16] According to internal GM documents, the ultimate culprit appears to be operating vehicles for long periods of time with low coolant levels. The low coolant is caused by pressure caps that fail in the open position. (The new caps and recovery bottles were introduced at the same time as DEX-COOL). This exposes hot engine components to air and vapors, causing corrosion and contamination of the coolant with iron oxide particles, which in turn can aggravate the pressure cap problem as contamination holds the caps open permanently.[17] Typically OAT antifreeze contains an orange dye to differentiate it from the conventional glycol-based coolants (green or yellow). Some of the newer OAT coolants claim to be compatible with all types of OAT and glycol-based coolants; these are typically green or yellow in color (for a table of colors, see [4])"
  10. Cheers Eric, are there any particular positions on the engine that you have regularly found to benefit from the earthing?
  11. Looking at the service manual they recommend an antifreeze with an ethylene glycol base, the cheaper traditional short life antifreezes fit this but always double check. It is interesting that the zed is plagued with coolant leaks and for the last ten years longer life coolants have been made with more aggressive acids, that may be eating away at heater cores, rads and pipes! So maybe to try and avoid the the problems with the zed it may be wise to : use ethylene glycol antifreeze only 50/50 mix with distilled water only (not deionised) Change coolant yearly
  12. Shut it or you won't get those keys you asked for:ninja:
  13. Yeah take the barrel down to him, I think the easiest to remove is the tailgate barrel. There are valet keys as well, IIRC the only difference is in the grooves on the key and not in the cutting.
  14. As long as you change the alarm code and the car is garaged I wouldn't worry about them coming back! The lock guy operates out of a shop in wandsworth call Belton & Slade, he is the mutts nuts, he can even recut other keys to fit your locks.
  15. I have a really good key guy, he can make a key from a barrel then all you have to do is ask someone to reprogramme the alarm?
  16. Every time I hear a dump valve, a little voice in my head says "oh dear" !
  17. |Sometimes it does sometimes is doesn't it all depends how the valves come to rest in the engine.
  18. Paul's car was a manual when he bought it http://www2.300zx.co.uk/forums/showthread.php?t=36398&highlight=auto
  19. No big intercoolers on it when we had it, the only thing was the turbos
  20. He didn't know they were on the car, we told him and IIRC they are 2510s.
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