A Bunch Of Noob Skyline Questions I Need Answered

[hop1308]

Hey guys, I haven't had a skyline for long and know very little about them so i had a few very basic questions that i've got no idea about and would appreciate it if anyone could help .

My car - R34 Skyline GT-T 1998 - Stock appart from 3inch exhaust and pod filter.

1. I hope the attached photo works, I see people say 9, 10 psi etc and 1bar or 0.5 bar, does psi make a difference in the amount of bars the car achieves? and how does psi and bars relate to the boost gauge on the stock system shown in the picture, the first of the three gauges? The needle on my car almost reaches +1 on the gauge, what does this mean?

2. Under the RPM meter theres a oil per kg or something gauge meter that always changes and idles at about 4 i think, its not there in the picture beacuse of the steering wheel. it goes left and right. What is the point of this meter and how should i use it?

3. Whats the difference between EN34, HR34, ER34?

4. What is the max boost i should run on a constant basis with a basically stock car except for the turbo back exhaust?

5. Will it damge my car in anyway to bypass the dual stage solenoid to keep it in a constant high boost?

6. I've seen people that drive hondas and smaller toyotas always rev their cars to 7 RPM and shift then, with this being a 6 cyl engine what is "too high" to rev the engine on a regular basis?

Any other advice on owning and maintaing a skyline would be awesome

I get these questions are really noob and ill probably get a few troll comments for it, but i really didn't know where else or who else to ask.

Thanks guys.

Edited September 2, 2012 by hop1308

[xntrq]

I too will be asking these questions in due time.

But as for 3:

HR34 is the none turbo RB20DE twin cam models.

ER34 is the None turbo 2.5L model and the RB25DET single turbo model.

ENR34 is the RB25DE none turbo GT4 AWD model.

BNR34 is the GTR RB26DETT model.

Also if there is a X after the GT badge then it is a four door manual and if it is a GGT it is a 4 door automatic model.And if it is a GGT-X it is a tiptronic box.

Source: http://www.answerstrue.com/thread/20120703230706AA2XjCe.html

[Hadouken]

Hmmm, local [roll stepping in for duty SIR!

Before i humour your questions. Did you even consider googleing?

1) umm go and google how many psi in 1 bar. 7 on stock boost gauge is close to 1 bar.

2) i wonder what on earth a oil meter could be doing that measures kg/cm. Seems to be some sort of space age oil pressure monitoring device.

3) -------

4) over 9000

5) everyones doin it

6) youve got boost they have vtec. Red on tacho means bad. As soon as you touch rev limiter prepare for major explosion

[Tai1or Made]

Ova 9000?

[tripsteady]

http://www.skylinesaustralia.com/forums/topic/113261-new-to-the-skyline-scene/

[hop1308]

I've tried google and searching, i really dont understand it in relation to the boost gauge, i dont get why it goes until +1 when people boost around 10psi, i dont see the relation there and I couldn't find anything on that.

I looked at that thread and have seen it a lot of times before, it doesn't answer anything im asking here.

Thanks for some of the useful replies guys, some more replies and clarification on some of the questions would be heaps awesome. I'm sure these questions are common knowledge for skyline owners but im sure theres a lot of people that just don't know, and thats why im asking.

Thanks again.

[blind_elk]

"psi" and "bar" are just 2 of the different ways of measuring pressure. There are things called "books" that contain information that would allow you to convert between the various units of pressure (and lots of other measures, for that matter). If they exist in books, then they exist on the internet.

The gauges in your car should mention somewhere what the scale of the gauge is. I suspect if you look really closely at the boost gauge, it might say somewhere "x 1000 kg/cm2" or similar. The tacho probably has "x 1000" as the scale.

[tripsteady]

do you really think that you are the first new skyline owner browsing these forums asking the exact same questions? people don't mean to be d*ckheads but when youve been around the forums awhile youll see that these kind of questions get asked again and again

1. I hope the attached photo works, I see people say 9, 10 psi etc and 1bar or 0.5 bar, does psi make a difference in the amount of bars the car achieves? and how does psi and bars relate to the boost gauge on the stock system shown in the picture, the first of the three gauges? The needle on my car almost reaches +1 on the gauge, what does this mean?

Boost gauge -- how to read

The stock Skyline turbo boost gauge is calibrated to the weird measurement of millimetres of

mercury. This form of measurement is used in some engineering circles.

_____________________________________

760mm HG = 1 bar = 14.6 PSI

Gauge reading PSI

0 0 PSI

1/4 3.36 PSI

1/2 6.72 PSI

3/4 9.1 PSI

Full (7) 13.4 PSI

2. Under the RPM meter there's a oil per kg or something gauge meter that always changes and idles at about 4 i think, its not there in the picture because of the steering wheel. it goes left and right. What is the point of this meter and how should i use it?

You don't "use it" This is your oil pressure gauge. Low oil pressure is bad....as it signifies loss of pressure somewhere. Also revving your car when the pressure is high( oil is cold and therefore thicker) isn't good either.

3. Whats the difference between EN34, HR34, ER34?

already answered above

4. What is the max boost i should run on a constant basis with a basically stock car except for the turbo back exhaust?

stock boost..i don't see the point of boosting more...you might as well max your power out through exhaust and intake upgrades before you work the turbo harder.....work on these things first to maintain a healthy engine before you turn up the boost.Also fuel cuts becomes an issue if you raise it to much as well. Best to do mods listed above then turn boost up and tune at the same time.

5. Will it damage my car in anyway to bypass the dual stage solenoid to keep it in a constant high boost?

unsure as Ive never done this....i don't see how running 7 pounds as opposed to the two stage system would damage anything as you are still running the same maximum boost.

6. I've seen people that drive hondas and smaller toyotas always rev their cars to 7 RPM and shift then, with this being a 6 cyl engine what is "too high" to rev the engine on a regular basis?

taken from another source :

Generally smaller engines can rev higher. Also four or five valves per cylinder and variable valve timing combined with a short piston stroke and a large bore make for high revving engines.

Horsepower is based on RPM, displacement (bore and stroke) and combustion chamber pressure (compression and volumetric efficiency. It is related by this formula:

PLANK

P=pressure (increased by high compression pistons, super/turbocharging, low restriction in intake and exhaust).

L=length of stroke.

A=area of piston

N=number of impulses (power strokes). Takes into account RPM and number of cylinders.

K=a constant to balance the formula.

So, all other things are equal, if you had a 4.6L eight cylinder engine with an RPM of 4500 and a 2.3: four cylinder with an RPM of 9000, they should have the same power.

Honda is probably the biggest user of high revving engines. They use the high RPMs to get large horsepower numbers out of small engines.

Manufacturers publish these horsepower numbers next to the fuel economy numbers and everyone thinks that their engines are so much better than larger engines with less power. However, when an engine is screaming at max RPM and full throttle, it is not getting the EPA mileage. Also most people don't drive their cars like that because of the noise and wear and tear on the engine. Many of these high-revving engines require premium fuel.

Larger low-revving engines are heavier and use more fuel in regular driving, but tend to be more drivable (power right away instead of doing a double downshift) for everyday traffic.

In short , your rb isnt a 1.8l engine , try not to rev the $hit out of it ALL the time...now and then shouldnt do any significant damage

Any other advice on owning and maintaining a skyline would be awesome

This has been answered to many times for me to reply. Search.

Edited September 3, 2012 by tripsteady

[hop1308]

thanks heaps for the response, it covers everything i was after, even if you were a bit mean about it

but yeah, it makes sense now, I'd rather ask and know than not know and ruin my car anyways.

I have one last question that i thought of,

7. What is the average kms you get out of about 30Ls of fuel or just kms/L. On a r34 GT-T. I'm getting about 7.3Kms out of every Litre. Is this normal?

[Hadouken]

This you can google.

Besides your questions arent just skyline related. They are basic sports car stuff. You need to educate yourself, lucky tripsteady humored this thread for you

[Mayuri Krab]

There is a thread on the fuel usage of skyline here somewhere already.

[hop1308]

i find it weird how its a public forum and you could have given an answer quicker than saying to google it. or better yet there was no need for yous to post if you didn't have an answer for me.

at least the other questions were answered.

Thanks guys.

[Hadouken]

you know why we say it? because sau has been around for a long time, and believe it or not you havent been the first one to ask these questions.

[tripsteady]

thanks heaps for the response, it covers everything i was after, even if you were a bit mean about it

but yeah, it makes sense now, I'd rather ask and know than not know and ruin my car anyways.

I have one last question that i thought of,

7. What is the average kms you get out of about 30Ls of fuel or just kms/L. On a r34 GT-T. I'm getting about 7.3Kms out of every Litre. Is this normal?

http://lmgtfy.com/?q=r34+gtt+fuel+economy

very first result has the answer you are looking for...

Edited September 4, 2012 by tripsteady

[Tai1or Made]

you know why we say it? because sau has been around for a long time, and believe it or not you havent been the first one to ask these questions.

http://lmgtfy.com/?q...tt+fuel+economy

very first result has the answer you are looking for...

Nailed it.

[mad082]

i'll answer 3 of your questions, which haven't been answered simply (one was answered in a long winded post that really missed the point).

5: no it won't damage the engine running high boost mode all the time.

6: the reason why people with honda's, etc, rev to 7000rpm before shifting is because they can. the skyline engines are small, high reving engine too, which is why the rev limit is 7000 to 7500rpm, unlike something like a commodore or falcon that only revs to 5000 to 5500rpm. so while you can rev to 7000rpm before shifting, just like the people you are seeing, it will also increase engine wear and fuel consumption, just like the people you are seeing. if you want to accelerate as quickly as possible then reving the engine out will achieve this, however if you want to save some fuel and be more kind to your car, then change gears earlier. the rev limit of the car is what the car makers considered to be the maximum safe rpm of the engine. this doesn't mean that you should rev it up to there every time you change gears, or should drive on the highway redlining 2nd gear, but it also doesn't mean that the engine will suddenly explode if you rev the engine up to redline when accelerating.

[hop1308]

thanks heaps for that mad082, and everyone else that gave helpful responses on this thread.

All my questions are answered

[r32line]

5: no it won't damage the engine running high boost mode all the time.

Well I think to answer this question you firstly need to define what 'high' boost is...

The factory boost levels are conservative to ensure the longevity of the turbo/engine etc. RB25's are quite strong engines and can take a bit more boost than stock however in doing so you are obviously pushing components like the turbo harder than Nissan intended and therefore you increase the wear and also likelihood of something breaking.

So I don't think that a blanket statement saying that running 'high boost mode' all the time will not damage the engine is entirely correct.

Edited September 12, 2012 by r32line

[34GeeTeeTee]

As for the revs you can rev it as hard as you want but the stock turbo falls off after a certain RPM which makes the rest pointless, my rev limit is set to 8200 but I shift at 7000 as thats where the power stops.....

Also, the RB25 can take big boost.... Mine is running 21psi without a drama, in saying that your stock turbo will end up commiting suicide if you try going over 14psi as they are not designed to do so... You should be able to get some usable power at that boost to have enough fun.