Murray_Calavera

I hope this helps even a little. So on a 20 - 25ish degree day, my oil temp tracks my water temp by like 10 degrees. So water temp 50 degrees, oil temp 40 degrees. They pretty much rise that way together til they both come up to temp. Water never really rises above 75, oil sits around 90ish. I run a decent sized oil cooler with a thermostat. Dunno when it opens? maybe around 90ish? No idea. I also have the factory coolant/oil heat exchanger thingo which helps bring up oil temps nicely. If you're super curious, I can log data on my next drive if you like.

The people who fail emissions testing are the people that don't treat it as something that needs to be addressed as its own thing. People turn up with their modified cars, as they intent to run them on the street, and then unsurprisingly fail. If you have the correct spec cat(s) and correct tune you'll pass first go. Are you able to use the factory ECU for this swap? Also have you 100% locked in everything with your engineer, as in all the mods it will have and locked in a price? I've seen quotes blow out like crazy and plenty of engineers playing the 'oh actually, just change this little thing and bring it back game' next minute your bill is $2,500.

I don't know why you're so hung up on this blue slip thing. It's like a $40 piece of administrative paperwork and 30 minutes of your time. You are going to go through hell getting the car certified, I'd be more worried about that. (I'm not saying it won't be certified, but it is not a fun process and is bloody expensive and time consuming).

This can't be answered correctly without knowing what engine is going into what car. Some engine swaps cannot be registered, some swaps will require engineer certification (+blue slip), some engine swaps will be blue slip only. You always need a blue slip, that's how the records are updated on the system with the new engine number etc.

Reducing timing plays a large part in modern traction control systems. I'm surprised how many comments have been made that cutting fuel to a cylinder is an 'instantaneous reduction of torque' but in a port injected engine, it's not actually 'instantaneous' while the time it takes for the last injection of fuel to move though the cylinder and be burnt is indeed quick, it's not instant. Cutting timing though is an instant reduction in torque, the ECU can start with this and then start cutting fuel as well if required. I'm probably splitting hairs here as the sensation to the driver may feel instantaneous in the case of the fuel cut only strategy, however I think it's still worth mentioning all of this from a technical standpoint.

That's a lot better then what I was picturing. I thought you were describing a system where when there is wheel slip, it's like hitting a brick wall, all fuel cut, then pause, then power comes back. I've never heard of the Racelogic TCS until now, so I'm just having a guess here. It seems like the market for these are for people without a modern aftermarket ECU? Kinda like back in the early 2000's when we all had some form of boost control box but now is entirely controlled by the ECU.

I started typing up quite a lengthy reply about why in a performance environment you would not want to use a sledge hammer approach to traction control of 'any amount of wheel slip detected = 100% fuel cut'. Then I thought it would make more sense to just link you to an expert for a better explanation then what I was typing. Syvecs do really good traction control systems, so I'll let them explain why you would want a more nuanced traction control system.

Thought this might interest you. Have a look at the way the power gently ramps up. When you were talking about being able to mash the throttle and maintain traction, this is a good solution.

To fix this properly, you'll need to chase the rust and see where it leads you. You can almost guarantee that there is more rust then what is visible at the moment.

You can log your data while on track. Oil pressure and whatever temperature sensors you're interested in will let you know the answers to those questions. Based on your use case though, I don't think you have to worry about your block being considered a consumable.

Are you planning to regularly track your car?

I can not wait to setup DBW and pull all of these leak valves in the bin.

I'm amazed that there is 100 octane at the pump. Who is the target market for this fuel?

Do you mind saying what the car is and how much they are asking for?

Yeah ok. I've typed and deleted quite a few things now. I think I'll just go with, I wouldn't go down that path. Everyone has to choose their own path though.

But they are selling it privately and not through their dealership?

How does the dealer come into this?

Is this all the same car? Its unregistered, it's got holes cut for cooler piping? Might be time to find another car. Is the car on car sales? I'm just curious what you've been looking at.

Can you expand a bit more on this?

If all they have done is defected you, it can't be contested at court. If they have defected you and given you a ticket, you can contest the ticket at court. Suppose you could think of the 'court' for the defect is the blue slip workshop. Unfortunately what the regulations say and what happens in practice is not always the same thing. Take for example exposed pod air filters, my interpretation of the regulations is that it's fine. However I've only ever met 3 engineers that agree with me. Every other engineer I've spoken to has very strongly sat in the "put it in a box" camp. I know people in NSW that have been defected for the holes cut to run cooler piping and were unable to clear the defect and the car was then off the road. I would not want to buy a cut up car then run the gauntlet of trying to find an engineer that agrees with me.

I'll throw my 2c in - Getting a breather on your sump will help a lot more for oil control issues (rather then just enlarging oil drains). Have a read of the oil control thread if you haven't yet. You'll need a larger and baffled sump if you're running an upgraded oil pump. You'll probably get recommendations to look at a Nitto oil pump instead of the HKS pump. Would you consider going single turbo? The Haltech pro plug in is over 13 years old now, I would also consider it ancient. I'm still using one and can't wait to upgrade. You can do a lot better then a Nismo fuel pump these days. I'd be looking at a Walbro 525 or similar. I'm guessing your block hasn't been bored out yet? You won't get a 86.5 mm piston into a 86 mm bore, so yep it will need to be bored out to accept the 86.5 mm piston. Your machinist will use the pistons you'll be running to set the piston to cylinder wall clearance when you drop the block off for machining. Side note, the GTR looks really tidy

There are a few things to cover off here. Firstly, cops can defect you even if your car is not defective. You could drive a brand new car off the show room floor and be defected as you drive out of the driveway if the cop believes the car does not meat ADRs. Keep in mind that cops are not mechanics or engineers, they just have to believe the car is defective for them to defect it. (This is obviously hypothetical, so in this instance lets say the car has an exposed pod air filter from factory. Obviously its fine, the OEM put it there, but the cop thinks pod = defect, so now you have to get the car cleared to be put back on the road. Obviously this will not be an issue, the car is stock and it's just a slight inconvenience). So yes, even if your car is engineered, you can be defected. You have to use a bit of common sense here, say your car is "engineered" for the aftermarket exhaust however at idle you can't even hear that the cop is saying, it makes sense that you will be defected. In this scenario it is likely that you changed the exhaust after the car was engineered and the car is obviously defective. It would be very strange for a cop to defect your roadworthy car that is engineered, even though yes it is technically possible. Back to the hole in the chassis question. Has the car been certified by an engineer saying there are no issues with the body being cut up? If it's on the engineers certificate saying it's fine, yeah you should be ok to buy the car. (provided you're happy with the potential future issues and limitations you may find) There is one big thing to keep in mind though. Never ever let the car go unregistered and only buy the car if you never plan to register it in another state. If the car ever needs a blue slip in future, it is highly likely that the engineers certificate that you have won't be worth $hit and you'll need to get the car engineered again. You may not be able to find another engineer willing to sign off on your cut up car. If you transfer the car interstate it will require inspection, it is highly likely that the engineers certificate won't be recognised in that state and you may find you can't find anyone willing to sign off on the cut up car. Having said all that, I wouldn't buy the car (I've already transferred my R33 from NSW to QLD rego, it could happen again etc). Should you buy it? You're call, I don't know what your circumstances are.

Remember, clear ppsr does not 100% guarantee the car is not stolen. Just because a car isn't reported stolen now, it may be reported stolen in the future. There are many scenarios why a vehicle may be reported stolen in a future date, and you are left holding the hot potato. We went over this in another one of your threads. I'll link it here to save my typing the same story all over again.

So the car is stolen?

I thought so. If I could see the car in person this would be a lot more simple, as I can't let me tell you a story. This is the scenario. You have a lovely S15 silvia, looks amazing, pretty typical mods, exhaust, front mount. But the workshop that installed your front mount thought nothing of cutting a bunch of holes in the body to run the intercooler piping. You don't know anything about the engineering process and really, don't know what the workshop did to install the front mount. The next day you are frolicking through the fields in your S15, playing with the other woodland creatures when out of no where a wild highway patrol monster appears. You are stopped for a random defect check. Oh I mean, random breath test, and the highway patrol monster finds some holes cut in the cars body. Your car is defected and written on the defect is something to the effect of, "holes cut in structural component of vehicle chassis". No big deal you think, a workshop did the modification, surely the way they did it is fine. You start speaking with blue slip workshops and engineers. Turns out that your car has air bags and other sensors that are tuned to the factory chassis and the way it responds in a collision and now the chassis has been modified/weakened. Now all the engineers you speak with don't want to touch the car with a 10 foot pole, it just isn't worth their time/they don't want to risk losing their engineering licence. So now the beautiful S15 is unregistered. What are you to do? It gets sold to someone interstate who thinks they can easily get around the defect situation. I mean the defect is in another state right? Wrong. The car stays unregistered. And now the car is sold to the next person and the cycle continues. Maybe this story isn't relevant to your situation. I haven't seen the car. It's something to think about in any case.