Jump to content
SAU Community

Recommended Posts

  • Replies 81
  • Created
  • Last Reply

Top Posters In This Topic

Matt.. I was thinking.

Could you see your self with 250-300rwkw and a .........

.........GTR?

The 4 wheels trying hard to grab traction in second with your eyes being sucked back in to your skull. :uh-huh:

Matt. Watch..

http://www.japanesemotorsport.com.au/46rot...tor2003Kier.mpg

I mainly wanted to get on here so I receive updates.

Without looking back through the threads I presume the rebuild is happening at RPM. I spoke with a guy recently at the Morpowa day regards his car at RPM having the exact same thing done due to ring land problems. I dont want to spark any Microtech vs PFC debates however I cant help but wonder if the knock sensing abilities of the PFC might have saved you.

Yep Greg, RPM are doing the rebuild. And yes 3 x RB25DET rebuilds in recent mths (all due to similiar failures). RPM was chosen by the respective owners to carry out the rebuilds. Not because they (RPM) were responsible for them! Just wanted to make that VERY clear to all :)

The PFC has not saved some from the same fate ;) I know of 3 PFC equiped GTS25t's that have had failures of the same kind. In fact one of the WA guys on SAU (who's running a PFC) had a rebuild recently for the exact same thing.

Not being familiar with the PFC knock detection, I guess it comes down to how quickly the driver reacts to the warning? For example, how quickly would the damage be done @ 7000rpm in 4th? It wouldn't take much to cause a failure under those conditions. By the time the knock detection had giving a warning, & you'd noticed it (I'm usually focused on the road/track doing 7k+ in 4th), the damage is done. But like I said above, I'm not familiar with the PFC knock detection. It uses the engine check light to flash its warning, yes?

I just remembered which forum member had the GTS25t, running a PFC, that let go just like mine. Killer T

Have a read of my posts in the later part of this thread! http://www.skylinesaustralia.com/forums/sh...ghlight=rebuild

I had a strange feeling that things were going to go wheels up on me! Nothing was wrong with my car/engine at the time, nothing at all. I always seem to be a step ahead of myself ;) Wish I could put that to good use somehow?

Rob,

Not all of them were making large power. One was from a suspected bad batch of fuel. Another was on the dyno (had gone from ~160rwkw to ~220rwkw via a new ECU, + other mod's) when it let go.

I wouldn't be too concerned about failure @ the 160rwkw mark mate. As per usual, it's all in the tuning. The more safety margin in the tune, the less likely your are to have a failure. I'd say that @ 250+rwkw with standard internals, you need a safety margin.

Another important point - If running stock injectors @ higher than stock fuel pressure, make sure that the fuel pressure is VERY stable, i.e make sure your fuel pressure reg does a very good job regardless of temp's. Its all too easy for the pressure to drop slightly & if the A/FR has been set-up so there's only a small safety margin then that pressure drop is enough to cause an unwanted BANG!

Knock detection is certainly a v/good idea. Knock detection that retards timing the millisecond it detects it! Knock detection that gives you a warning you have most likely already damaged your engine isn't much good.

And finally, remember we are talking about engines that usually have a few k's on them (sometimes hard driven with mimimal maintenance).

I poped through RPM today and Matt..

Your car still looks as clean as ever.

Those tyres look damn nice.

How on earth could you consider selling it. It has to be the nicest R33 I've seen.

Tim was telling me that microtech soon are releasing a L16 I think he said that has the provision for knock detection, speed input hence traction control etc..

Sounds good.

Matt, I remember reading your going for 300rwkw. Are you sticking with the same turbo?

Thanks for the kind words mate :) Trust me when I say I'm not the one who has considered selling it! If it was up to me (& me alone) it wouldn't be going anywhere :P

If, in the very unlikely event, I do manage to keep it then I'll see how much more the current turbo has got in it? I'll aim at running ~18psi on the new motor, depending on how the injector/fuel rail issue goes. As part of the rebuild I'm hoping to get larger injectors & a custom fuel rail (IF it doesn't blow the cost out too much) Why? Well I'd like to get to use the car to full potential for a few months before selling :)

Knock detection with timing retard & traction control would be very nice features to have.

One bit of advice, run it in properly. Load it up by full throttle up hills but DONT rev it out for at least 1000 kms. Other wise u will hurt the engine and it wont perform as good as it should. Dont put addatives in the oil such as Slick 50. Do it right and u will have a great motor , i know its tempting to give it a REV but just go easy for a bit and it will last u alot longer.

Hey u wanna swap it for my car :]

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Even more fun, leave all the ADAS stuff plugged in, but in different locations, hopefully avoid any codes!   And honestly, all these new cars with their weird electronics. Pull all the electronics out Duncan, and just shove an aftermarket ECU and if needed a trans controller in, along with a PDM. Make it run basic but race car styled!
    • To follow up a question from earlier too since I had the front bar off again (fking!) This is what is between the bumper and the drivers side wheel And this is the navigator side, only one thing but its a biggy! So basically....no putting coolers in the wheel arches without a lot of moving other stuff. Assuming I move to properly race prepping this car I'll take that job on and see how the computers respond to removing a whole bunch of ADAS modules
    • So I prepped the car for another track day on Wednesday (will be interesting to see coolant temps post flushing out and the larger reservoir, with a forecast of 3-14 being 20o cooler than last time I took it out). Couple of things to mention; since I am just driving the car and not taking a support vehicle, I took the rear seats out and just loaded the back up Team Trackday style. Look at all that space! To cover off removing the rear seat....it is weird (note the hybrid is probably different because it wouldn't have folding rear seats) Basically, you remove the lower seat base, very similar to a r series but it is a clip that pulls forward to release the base rather than it being bolted down. Easy Then, you need to remove the side section of the rear seat on each side. There is a 14mm head nut at the bottom of the side piece, the it slides upwards off a hook at the top to release; you also need to unhook the seatbelt from the loop at the top. Then the centre piece is weird. You need to release/fold the seats forward with the tab in the boot on each side From there, there are 2,x12mm headed bolts holding the rear of each seat to the folding bracket, under the trim between the rear seat and the boot (4x christmas tree clips there, they suck). The seat is out but you can see where the bolts attach to the bracket
    • As discussed in the previous post, the bushes in the 110 needed replacing. I took this opportunity to replace the castor bushes, the front lower control arm, lower the car and get the alignment dialled in with new tyres. I took it down to Alignment Motorsports on the GC to get this work done and also get more out of the Shockworks as I felt like I wasn't getting the full use out of them.  To cut a very long story short, it ended up being the case the passenger side castor arm wouldn't accept the brand new bush as the sleeve had worn badly enough to the point you could push the new bush in by hand and completely through. Trying a pair of TRD bushes didn't fix the issue either (I had originally gone with Hardrace bushes). We needed to urgently source another castor arm, and thankfully this was sourced and the guys at the shop worked on my car until 7pm on a Saturday to get everything done. The car rides a lot nicer now with the suspension dialled in properly. Lowered the car a little as well to suit the lower profile front tyres, and just bring the car down generally. Eternally thankful for the guys down at the shop to get the car sorted, we both pulled big favours from our contacts to get it done on the Saturday.  Also plugged in the new Stedi foglights into the S15, and even from a quick test in the garage I'm keen to see how they look out on the road. I had some concerns about the length of the LED body and whether it'd fit in the foglight housing but it's fine.  I've got a small window coming up next month where I'll likely get a little paint work done on the 110 to remove the rear wing, add a boot wing and roof wing, get the side skirt fixed up and colour match the little panel on the tail lights so that I can install some badges that I've kept in storage. I'm also tempted to put in a new pair of headlights on the 110.  Until then, here's some more pictures from Easter this year. 
    • I would put a fuel pressure gauge between the filter and the fuel rail, see if it's maintaining good fuel pressure at idle going up to the point when it stalls. Do you see any strange behavior in commanded fuel leading up to the point when it stalls? You might have to start going through the service manual and doing a long list of sensor tests if it's not the fuel system for whatever reason.
×
×
  • Create New...