Ok, is there anywhere that have the following for sale in the UK, and what kind of prices do you reckon I should be looking at?:

 

1. JWT ecus

2. 550 / 555 injectors

3. Greddy SP or B&B Triflo exhausts

4. A decent clutch capable of taking 450bhp, but still feels nice (any thoughts?)

 

...all required before my car can be driven again (been without the zed for 7 months so far, *sob*)

 

Also, what pressure does the Z fuel system run at? (in PSI)

 

Cheers in advance guys n girls

 

 

------------------

Simon

i'm being deadly c here if the ginger wizard cant get you the best price in the uk i would seriously consider buying from the states and have a word with paulg about getting them brought over. i bet you'd save yourself over a grand at least on all those items you want and with the grand you save you could get a set of wheels from australia another good place at the moment at we are getting a good rate

Cheers Tooley, I actually spoke to Ginger Spice earlier about the injectors, but wanted to put the feelers out on the other items.

 

I'm more keen on the Greddy exhaust than the B&B, especially attractive is the price on EatRiceZone for the Greddy - half the price of a B&B triflow, but getting it shipped over could prove costly. (Paulg, you may have mail coming your way :P)

 

Simon.

There are some guys on TTnet who can do *very* good deals on A'pexi injectors from Japan (of course, the guys name now escapes me totally)..

 

Dunno if it'd be cheaper that way than from Johnny or not though - since I don't know either price! Lol

 

OK this is turning out to be a very unhelpful post isn't it..

 

Oh and fuel system pressure - varies, but idle is (if I recall correctly) 37psi, and max pressure is ~43psi.

 

[This message has been edited by aaronjb (edited 24-01-2002).]

Nico. Tell them to stop calling me Ginger Spice mate it pisses me off lol.

 

Willy. Once you have some more prices let me know. It can be hard to get a good deal these days mate. lol.

ok strawberry blonde tosser it is then muhahahhahahaha

LOL - I promise to never call you anything even remotely orange coloured if you can tell me where I can get some of these wheels from:

[*]

AVS VS-5

[*]

AVR model-5

[*]

SSR GP-0 Decolte Evolution

 

Damn, my bank managers gonna love me!

Damn those are gorgeous wheels.. all of 'em.. especially the first and last..

 

When you find out where to get them from.. let me know! Lol

 

And Johnny - I've never called you anything remotely colour oriented.. can I qualify for a special discount?

Tooley you Fat Fuck.

 

Willy. Ask Tooley if anyone has got them on a motor near him?

 

Jesus How many times do I have too say this.

 

What Fuckin Discount?

 

I will chuck in a free Coffee table and a copy of Tooley`s wank mags. BIZARE

Johnny, I've never called you names either.

 

However, I might have to start if I don't get my fecking de-cat pipes soon!

Hmmm, talking of Bizarre - as in the magazine. Check out page 9, there's this mad Chink pulling a car with his eye-lids!! Gross!

 

Oh and on page 15 - a 12,000 bhp tractor! Yep, its the tractor racing championships! Don't reckon it'll pass an MOT on the emissions though.

 

Tooley, ever seen those wheels before? (I think the VS-5's are the ones on the silver 300 featured on EatRiceZone).

 

Simon.

Az,

 

I'm happy to stand corrected, but I thought that fuel pressure had to be strictly controlled and static. The reason being that the quantity of fuel injected is controlled by how long the injector stays open. If the pressure changed, then the quantity of fuel would change for any given mixture setting.

 

As I say though, I'm not an injection specialist - anyone else go any ideas ?

 

Cheers

 

D

Makes sense to me. The manual only states one figure, not a range. http://www.300zx.co.uk/tech/manual/manual/efec/190.gif

 

Isn't messing with this one of the ways of changing the fueling ?

And also from the service manual, page EFEC-186;

 

Start engine and read indication of fuel pressure as vacuum is changed.

Fuel pressure should decrease as vacuum increases. If results are unsatisfactory, replace fuel pressure regulator.

 

And EFEC-185;

 

Read the indication of fuel pressure guage;

At idling;

When fuel pressure regulator valve vacuum hose is connected - 36.3psi

When fuel pressure regulator valve vacuum hose is disconnected - 43.4psi

 

 

So reading all that. As the manifold transits from vacuum (at idle/off boost) to on boost, the fuel pressure will rise from 36.3psi to 43.4psi.

 

Also, if the fuel temperature is determined as being above 75degC on startup, the PRVR solenoid is opened, which presents atmospheric pressure at the fuel pressure regulator, rather than manifold vacuum, raising the fuel pressure temporarily to 43.4psi to combat heat soak.

 

 

Originally posted by WillyEd:

LOL - I promise to never call you anything even remotely orange coloured if you can tell me where I can get some of these wheels from:

[*]

AVS VS-5

[*]

AVR model-5

[*]

SSR GP-0 Decolte Evolution

 

Damn, my bank managers gonna love me!

 

Willy,

 

I can get you the SSR Decolite and the AVS wheels (and maybe the AVR, dont know). I actually have a price for the SSRs already because I was considering them for myself. Give me an email and we'll talk (see my profile for email address).

 

Cheers,

Andy

 

 

Cheers Andy thats great, I'll post you a mail in a minute

...And I just realised that I put "AVR model-5", it should have been "AVS model-5" oops!

 

Simon

Az,

Right, see what you mean. Further complication huh ? It would appear that a constant pressure is expected under certain given conditions, such as WOT etc.

ROFL

 

Come on you lot...own up! Who started calling Johnny "Ginger Zpice"??? I dunno!

 

I prefer DuraZell Bunny or J-Glo personally!

 

I'm wearing my banana nosed NHS glasses and hitler tash disguise on Sunday!

 

That makes sense Az and explains why there is a vacuum line going to the regulator - thanks.

 

However, a question for anyone with an opinion ... why is it designed this way ?

 

Surely it would be much easier to program in accurate fuelling if you could at least guarantee what the fuel pressure was going to be at the injectors.

 

Also, since the fuel map does not have a parameter for inlet vacuum / boost, how does it manage to get the fuelling right.

 

Or is this some sort of method of compensating for changes in atmospheric pressure perhaps ???

 

D

Thats a very good question Dave..

 

It seems like it's simply there to reduce fuel pressure at idle/decelleration, or to increase pressure on boost (depending on how you look at it)..

As for why it's designed that way - I'm really not sure Obviously the flow rate of the injectors will be more at a higher pressure, perhaps it's a safety net more than anything?..

 

Anyone know for sure?

 

Sorry for going off topic Simon

Everyone stop calling Johnny Ginger Spice - Or he will sue my Ass !

 

Besides everyone knows he is really strawberry blond.

 

Hey if you all want a reall laff wait till you see the colour of Sequential TwinTurbos

mop LMFAO

 

------------------

Z ya

 

Nico91TT

 

ok ok we'll call him by his native american name man who walk in tight spandex looking jeans.....ive only ever seen one car in the uk with those avs's on and it was on a supra down south....talking of suprs i saw a nice set of blitz technospeed on a supra in in lowton last night i fought hard with the inner demon inside me from old that wanted me to follow him and leave his car on bricks...was a nice supra too and in an even nicer colour it was a lovely silver colour

Originally posted by Hairsy:

Surely it would be much easier to program in accurate fuelling if you could at least guarantee what the fuel pressure was going to be at the injectors.

 

Also, since the fuel map does not have a parameter for inlet vacuum / boost, how does it manage to get the fuelling right.

 

D

 

Chaps,

 

You CAN program in accurate fueling if you can guarantee what pressure will be at the injectors. Thats what the regulator is there for. To regulate at 43 psi whatever your boost. It does this by increasing fuel pressure 1psi for every psi of boost pressure.

 

The ECU does not need a separate fuel map for vacuum or boost because the air flow meter just reads whatevers going into the engine and sends a signal value to the ECU which helps decide how much to open the injector by. I say helps because the ECU also takes into account water temp, RPM and sometimes gear ratio signals (for auto boxes). The airflow meters also have built in ambient air temp sensors for cold start enrichment.

 

Just my 2p.

 

Cheers,

 

Nathan.

The fuel pressure is increased as manifold pressure increases so that the pressure differential from injector to manifold is always the same - otherwise on increased boost there would be effectively less pressure available to push the fuel out due to some of the rail pressure being used to combat the manifold pressure... I think this is what Nathan was saying

 

If you don't understand I'll re word it

 

CheerZ,

 

Andy

Ahhh.. Why didn't I think of that!?

Originally posted by andyduff:

The fuel pressure is increased as manifold pressure increases so that the pressure differential from injector to manifold is always the same - otherwise on increased boost there would be effectively less pressure available to push the fuel out due to some of the rail pressure being used to combat the manifold pressure... I think this is what Nathan was saying

 

If you don't understand I'll re word it

 

CheerZ,

 

Andy

 

Duffman Hoffman,

 

I don't understand, could you re-word it please?

 

Or could we discuss this in further detail at your earliest convenience which I believe to be this Sunday at the J Meisters residence?

 

Maybe you could further enlighten me over a cup of Mrs. Johnnies finest Earl Grey and a toasted tea cake? LOL