General Discussions - 300ZX Related

does anyone know where the fuel pump voltage regulator is please??

Arse!!! Well, I think my heater matrix is dead. Water pisses all over my left foot when taking left hand corners and on hard acceleration. It pisses into the passenger side as well of course. I've searched the relevant posts but can not find a working link to the Aussy site regarding the heater matrix removal and installation. Can someone point me to another link etc to carry out the replacement with the dash-in and fiddly method??? Is it possible that the heater matrix is fine but perhaps a pipe has come loose etc because the heater still works fine other than the leaks of course??? Cheerz Van

I'm thinking about buying a standard J-spec '97 TT with 40k miles on the clock. Trouble is I've just HPI'd it and its come back as CAT C damaged. Is it worth the bother of getting it checked out or should I leave it? What do I have to check it for and where would I have it inspected? Presumably the RAC would not be the best call? The current owner genuinely seemed surprised to find out that its been written off. What should I pay for it? Thanks for your help, hoping to join the Z community...

Hi, had my aircon emptied and regassed at the weekend as it only just worked, had 45% of the amount it should have had. But, it only works slightly better. Almost as if some valve or sensor is stuck/broken/dirty. Any ideas please..

Hi All, I've just checked the resistances of the det sensor and its ECU connector. Det sensor is reading 0.533 Mega Ohms rather than 1Mega Ohm as expected - I suppose it may just be completely sh*gged but if not, will the lower resistance make it more or less sensitive to det noise? ECU resistances are OK. I'm using an AVC-R so safety boost is no longer possible but from recent posts it appears my ignition may be being retarded which is making my engine run hot due to the high AVC-R controlled boost - this is making things worse and accelerating the detting from what I can gather...surely bypassing the det sensor in my situation can't make things worse but …

MY ZED WAS RUNNING REAL ROUGH AS ON 5 OR LESS CYLINDERS SO CLEANED PTU CONNECTIONS AND EVERYTHING WAS OK FOR A COUPLE OF DAYS. I GAVE THE CAR A GOOD BLAST THIS MORNING AND IT STARTED RUNNING REAL ROUGH AGAIN. PARKED UP AT HOME LEFT IT FOR 10 MINS WENT TO START IT AGAIN AND NOW WONT EVEN START . CHECKED FOR SPARK BUT NO SPARK AT ALL. IS THIS PTU FAILURE? IS THERE ANY WAY OF TELLING FOR SURE? CHEERS ..LEE

Just had my car back after having 2 new turbo's fitted. They are the Turbo Dynamics stage 1 / 2 with 360 degree thrust bearing and staggered gap seal e.t.c. e.t.c. (MD 275 + MD 276 models) Just before they were put on I noticed on the paperwork attached, boost set at 0.5 bar. Somebody correct me here if I'm wrong as I'm a PSI man that this equates to approx 7psi. Which in my mind is safety boost territory. When I bought my Zed the turbo's were knackered so this is the first time I've had boost, but it's not amazing bearing in mind we also have apexi intake, Iridium sparkers and de-catted along with mongoose system. Boost guage reads fine although as reli…

Has anyone fitted the ecotek unit to their zed? And/or tried the de-coking foam? Have had good press.

Not that this really matters and belive me I have no desire to attempt to prove this but........ Is the top speed of a TT manual (quoted at 155 mph) electronically limited or is that the terminal velocity? Cheers. Martin.

Today seen how far you can take a cam belt mileage .... to extreams that resulted in the pics attached! a non starter? the engine had failed at relatively low speed, after removing the belt and setting the timing (valve and crank way out) a new belt and away she went no noise just purred away with NO damage not bad for a 145k miler on what looks like the original belt! Jeff TT

Nissan dealer is telling me I have a small leak at one of my head gaskets after replacing my water pump. They have said they will use Rad Weld to seal it. Will this work?

Escort Cosworth.................... Mullered. He came up the back end of me giving it some and wanted to race, so I let him have it from both (four) barrells..........:D 100mph.........neck and neck'ish........me gaining all the time as he left me from 30-70mph...... 120mph........passed......... 140mph........few car lengths.... 160'ish...........where's the Cossie gone??? Slowed to 70mph, he came past with his thumbs up giving me the the universal 'sweet' sign.......and mouthed "What brake is that?" I held up four fingers and mouthed "hundred" he gave me the thumbs up and sped off, I took it easy, enjoyed the victory and the sunsh…

who ever gave me bro the wind deflector at billing a big THANKS. he cannot remember who it was tho. but thanks anyway a drink coming your way as soon as we meet up next. as long as somone owns up to giving it me. :D "T".............

Had an interesting encounter with a m3 on the m1 last night he gunned it at 100mph and tried to loose me sat on his arse and was well pissed off when I was playing with him and he ran out of steam at 160 lol.nice car though and pulled well. Richard

Hi peeps, My boost gauge is not working (or is actually working as a nice barometer). I've traced the hoses to the hard pipes on the drivers side of the plenum, and from there the top goes to the throttle chamber entry, and the bottom goes towards the front (under the big top throttle hose). The gauge is currently connected to the bottom hard pipe. My question - should the vacuum gauge be connected to the top hard pipe (i.e. the throttle) or the bottom (which is I don't know what!!!)? If I swap these to test, will I endanger my precious engine? I don't believe I've got vacuum leaks (if I reroute the gauge hose to the balance bar I get good idle vacuum, a…

I remember reading a post a while back about a company (I believe they were in Ireland) who make number plates mail order. I have legally bought a cherished plate but it will take a few weeks to process. As the new legislation states that I cannot purchase a number plate until the transfer paperwork has been completed, I'm simply looking to buy the plates now, so that they're ready (ie. without having to provide proof of reg. number ownership first)... Anyone know the company I'm referring to, or any similar ones????

I've read loads of posts about the type of oil everyone uses, but was wondering about this Slick 50 stuff. It's basically an oil additive that you stick in and it reduces wear and increases performance (supposedly!!) Has anyone used it on there Z? Cheers Rod

Guys What are we talking about in time and money to change the four cam seals plus the the two half moon seals under the plenium also the crank seal and what is involved. Ken

I apologise if this is a stupid question but it is the duty of newbies to ask em.. :D I'm thinking of getting this car from http://www.prestigemotorsport.co.uk but I would love to get some experienced people's opinion of how much it is worth here with all those mods?

Had a busy week in the workshop post Billing, as usual had a few cam belt jobs in and one in particular should serve as a warning to how NOT to get the job done, it is not a technically hard job but familiarity makes it much easier, no doubt many garages are more than able to perform a belt swap but can make mistakes due to lack of direct experience in the 300zx. This particular zed had some known history and was said to have had a belt change prior to the present owner buying it. Looking throught the attched pics what was obvious from the copious amounts of orange sealant everywhere was someone had definately been in there lately. However to start the intake t…

i cant afford a boost controller at the moment so was going to try the boost jet method. can someone tell me what size jets i need for about 14 psi.. also where do i put them. cheers ..lee14 psi

Hi All, I think I've narrowed down my less than perfect top end performance to boost leaks. I get some detonation when I floor it - more noticable with extra passengers/weight on board - preumably the detting will cause the ecu to switch to safety boost mode and retard my ignition - the boost stays high as I'm using an AVC-R, detonation continues due to high boost (stop me if I'm talking cr*p already..). I'm assuming my leaks are the cause of the initial detonation... I get some whistly hissy noises from one side when boost kicks in and am plagued with a noise like goosehonk which may well be a leak around the intercooler. Can anybody confirm or deny …

Can you repair a slow puncture?? I have a bolt (head is about 8mm) not sure how wide the thread is but it's right in the centre of the tyre (on the tread) on the rear drivers side!! Is it a new tyre? OR Is it a repair? Matty.

How long should I let the car idel before switching the engine off? (I'm too tight to buy a turbo timer !!) Cheers. Martin.

Hi all, I have found a guy who used to work on Z's for Nissan. He does private work, now works on Range Rovers which he hates, wants £80.00 for a cam belt change plus belt. Seems to know his onions. I will post when he's done it, about 3 weeks as he is off on hols.