Engine Rebuild - Questions...

[satanic]

All going well i hope

My sump was finished today, motor is ready to go on Friday - thats one more white r32 out there on the roads

What happened to your 1st RB30 combo? Wasn't it just finished earlier this year?

[TiTAN]

it blew up, something to do with the tune from memory.

[satanic]

So nothing mechanical related? Asking so I can have items checked on mine if there is a possibility of it happening. If it's tune related, meh - mine's in as good a nick as can be.

[GTRKat]

A little update... My head is finished (have pics coming) and apparently looks so good it's a shame that it has to go back in! It will all be assembled and ready to go so the engine will be back to my mechanic on Monday.

Yay everyone cross their fingers for me getting my car back in just over a week!!!!

[TiTAN]

Will they be doing the initial run in on the dyno?

[GTRKat]

Nope. I'll be doing it on the Sunday after I get it back. It'll be a gentle tune with rev limits and such.

[TiTAN]

You should get them to do the initial run in on the dyno for you.

Take a look at this thread. http://www.skylinesaustralia.com/forums/Wh...ne-t247364.html

[GTRKat]

Autotech don't do dyno run ins anymore and I'm happy to have the car and do it myself.

His words... "ive been told to use cheap mineral oil and take it up the mountain and load it not reving past 5000 rpm and also not to baby it"

Dunno about cheap oil, I'm not the one putting that in... But this is pretty similat to what I've been told. That I can flog it but only really up to 5k.

Like everything there's 1000 different ways to do things so I don't really care what it says on the internet, I'm doing what my mechanic and engine builder recommend since something gives me the impression they may have been through this a few times.

[OzLeroy]

Saw your head yesterday when i picked my engine up. Its beautiful, a work of art. I'm jealous.

[GTRKat]

Aw I'm jealous that you got to see it first!!!

[rossco_01]

any pics of the head Kat

[GTRKat]

Not yet but Greg is going to snap some for me before it goes

Autotech are also going to take some of it all fully assembled before it gets dropped back in.

[sdistc]

Good to see things are moving quickly for you! Maybe you'll have it all run in and tuned in time for the Supra Club dyno in (this hasn't been confimed yet, of course) mid January? You can come and show what a GTR is capable of

[GTRKat]

By then I'll already know what she's pulling on the dyno so might go out for a look but wouldn't bother to enter. It'll be quick and fun to drive but I didn't build it to be a dyno queen.

[sdistc]

By then I'll already know what she's pulling on the dyno so might go out for a look but wouldn't bother to enter. It'll be quick and fun to drive but I didn't build it to be a dyno queen.

Hehe most of us don't build them to be dyno queens.. but a daily driver that makes anything upward of 400 kW at the wheels is always nice to see at a dyno day. And without being a arsehole, you'd have to bring a bit more than 400 to a Supra Club dyno day

Hopefully we can organise a track day with both clubs and test these bad boys out!

[GTRKat]

As my thread says the whole way through I'm not looking at anywhere near that much power. No point competing with guys that have swapped out their twins for big singles.

I'm much more interested in a track day. In my opinion dynos are only good for tuning a car, they're no indication of what the car can do on a road. I only went to the last day so I had a before figure at all four wheels for my engine rebuild.

[Scooby]

Autotech don't do dyno run ins anymore and I'm happy to have the car and do it myself.

Is Ed going to check the tune and afr's etc before you take it, especially since it's now a 2.8? A bit of dyno time also helps to check for leaks after a brand new install too, often happens no matter how careful you are.

Late pm or early am is good so you're not sitting in traffic, and can drive it the way you need to. Bateman's and back is a good varied run.

Re mineral oil for the run in, most is too heavy for RBs (Nissan rec 7.5W) and the special run-in stuff is about 25W. Turbo seals don't like that. Closest I could find was Penrite 10W-30 mineral and that showed high but still OK pressure on my mechanical gauge.

You've probabably already thought of all this, of course definately go with what Ed and Greg say, just my 2c.

Cheers and good luck!

[GTRKat]

He most certainly is

Shit time of year for a coast run too with school hols and what not but probably an early morning run is what I am after but see how I go.

I have no idea what oil they're putting in I just know that it's different and needs to be changed after the run in - leaving that all up to the boys to handle.

Cheers for all that!

Man I just want it back!!!!!!!!!!

[sdistc]

As my thread says the whole way through I'm not looking at anywhere near that much power. No point competing with guys that have swapped out their twins for big singles.

Oh I know what you said, but you wouldn't be the first to get a taste of more power and start looking for more and more

I'm much more interested in a track day. In my opinion dynos are only good for tuning a car, they're no indication of what the car can do on a road. I only went to the last day so I had a before figure at all four wheels for my engine rebuild.

While dynos are *meant* to be a tuning tool, they can give you a pretty good indication of the way turbos respond, and how much power & where it makes it that your driveline combination is capable of. Turning that into performance on the street, track or dragstrip is the trickier part.. but a car that makes good power on the dyno *should* still be a fast/quick car.

I do know what you're talking about... and no matter what your dyno sheet says, it means nothing real-world unless you have the track times or E.T.s to back them up. Hence my keenness to get on the track

Edited December 7, 2008 by sdistc

[Viper_r32]

Dunno about cheap oil, I'm not the one putting that in... But this is pretty similat to what I've been told. That I can flog it but only really up to 5k.

i know it sounds crazy to use cheaper oil, but it is important, my engine has also just been rebuilt. the reason for this is that for the first couple of days the piston rings need to bed them selves in, this is almost imposable to do on good oil especially if its full synthetic. you need to get the piston rings to wear in, once this is done you can go to a half synthetic for the first 1000ks and after that you should be OK to go a good full synthetic.

hope this helps

and all the best with the rebuild