Eggs

My girlfriend and a couple of her mates are signed up to do the Scally Rally in June, which looks basically the same but £100 cars. If I get the Z running by then i'll be following with a tool kit just in case....

Looks well smart but are you going to be able to see it past the steering wheel?

If you use a recirculating catch tank like the one in that Scooby thread that Zedwizz posted then the oil contamination is being removed from the blow by gas into the catch tank, but you are still putting hot gas back into the system. We want any air going into the engine as cold as possible. If you use a catch tank with a vent like Silverbullet used, the oil is seperated in the tank then the hot air vents to the atmosphere. All cars have gasses blowby the piston rings to some degree without exception, it doesn't mean you have problems unless your rings are shot and so much is getting past that your oil pressure goes really high, and you find your dipstick being pushed out out of its tube. Piston rings have gaps so a tiny amount of combustion gas will leak past into the crankcase every time a cylinder fires. If you run high boost the amount of blowby will be greater. If you just put a filter on the end of the hose on a car thats running high boost it will soon become saturated with oil. The catch tank seperates the oil from the blow by gases and then vents it or recirculates it depending on the system you opt for. Or you could just drop the pipe down the side of the engine or under the car out the back to stop fumes.

Cheers HP, I understand all of that except what you're saying about nitrogen oxide from the EGR being good for cooling the cylinder temps. I thought you were looking at a temp close to 1000 degrees for combustion gases when giving it some beans, which wouldn't be good to recirculate back in or am I misunderstanding? Cheers for that Keano, here's the link for anyone that reads this thread. Read it, it's informative http://www.300zx.co.uk/forums/showthread.php?t=123979 Look at post #59. You see where he has blanked off on the right of the diagram, I can't remember 100% but im sure that there are the same pipes coming out the rocker cover on the other side of the engine as well? Are these blanked off or plumbed in with a T piece to the pipe running past that side? See what I mean, in my head it makes sense to mirror both sides or as it's all connected internally is what's in the diagram ample? Hypothetical question: Instead of running a catch tank and having the smells that come from it or having pipes dripping on the road/track or firing out the back. Would it be possible to plumb it into the exhaust? I know it would be hassle as you would have to drill and weld a connection in but would it be an option or would exhaust pressure blow back up the pipe? Might not be a good idea for a road car if it's subjected to an MOT emission test?

Please elaborate geek:tt2:

Nice work, did anyone turn up to give you a hand?

Might have been something to do with the speed you were driving mate.....:whistling:

Yep do, im keen to see a detailed stage by stage of how you now go from the hole you cut, to fixing the gauge holder in place, to moulding it in, then finishing it. I've never seen how you work fibre glass and resin in this sort of application, i've only ever used it for roofing.

That system recirculates the air back into the intake system as a sealed system. Wouldn't it be better to have a vented system with a catch tank that has a breather on to vent to atmosphere? The gases it's venting are hot combustion blow-by gases so i'd have thought not putting them back into the intake would be better? Something I just thought of...... Q. If the car runs a MAF as standard, then having a crank case vent that allows air into the intake but after the MAF would mean that there is unmetered air being put into the system, wouldn't the engine run better without it?

I saw Boldy post this link about them a while back mate http://www.turborebuild.co.uk/p/product/1107072217-Garrett+T2+T25+T28+Race+staggered+rear+oil+seal+turbo/

Sweet thanks Stu i'll check it out next weekend. Does anyone know where the fuse for the electric mirrors is located?

I've searched but the pic I found is not the same as mine. Can anyone post a pic of the inside of their kick panel in English or translated please? Cheers:biggrin:

I was looking at this and figured you plug the holes in the plenum each side. I have seen pictures of the metal pipes that comes out of the valve covers and turn 90 degrees to face the front of the car, in the pictures these had been turned 180 degrees so they faced back toward the bulkhead, which would make it alot easier to plumb into the catch tank. Then chose a side for a catch tank. Plum both the breathers into the catch tank, one pipe obviously being longer than the other depending which side you can fit the catch tank. Maybe someone that has done it can give more info

If nothing changes between now and Sunday i'll be there

LOL, that's ace, I love the first two paragraphs:lol:

Does that kit include a new nose panel? If so, I know a guy that has the same colour car as you and would be very interested in your current one.....:drool:

Can you get something suitable off the shelf or are you looking at a custom manifold and down pipe?

Cheers for the education guys, two last questions.... When a car is mapped on a rolling road will they use twin O2 sensors or just one up one exhaust?

Whats the wideband kit you have? When you say another sensor you mean in addition to the sensor the ECU reads from? Does your wideband have a sensor for each bank? Please forgive all the questions im not familiar with A/F sensors and want to know how an aftermarket kit would be set up :hammer:

Can a normal gauge just be connected to the O2 sensors then? How does it work if you have a wideband but each cylinder bank is exhausted separately from the manifold to the back box?

Why is that mate? Doesn't it give an indication of whether your air fuel ratio is right, in which case an A/F ratio gauge would be better although im guessing more expensive?

Ah nice one mate, i've got it now. I knew one of the nerds round here would help me out :alien::rofl:

Yep that's the man. I still can't do a link for some reason but if you go to the 'members list' on the bar near the top then search for Groover, then go to 'Statistics' click on all threads started by Groover, then go to page 4 and it's about the 12th one down. Worth a look, has photos and all. Anyone know why my address bar stays on the homepage address all the time regardless of what page I go to? It only does it on this site which is odd.

I remember reading recently someone did their doors with a dynamat type product and said that made a big difference to road noise. If you search for 'wind and road noise' you'll find a thread by Terry in which he soundproofs his car and the results which sound impressive. I would have put the link but it doesn't appear in my address bar for some reason.