Jump to content
SAU Community

Recommended Posts

Originally posted by MattR

did have. dropped a valve:( on sunday wasent too lean or anything like that, no detination just dropped one

I was thinking it was only a matter of time mate. Reving to 8k on a stock used RB25, something had to give sooner or later :) Ahh well nothin' wrong with spendin' a few $ for a freshen up hey :)

So what's the plan from here on in?

Should have stuck with the old RB20 mate!!!!

At least you know where the limit is now for a RB25 with stock internals - now you'll just have to put a RB26 in it instead

Or rebuild the RB25 - whats the plan?

Chris

Originally posted by whatsisname

I was thinking it was only a matter of time mate. Reving to 8k on a stock used RB25, something had to give sooner or later :D  Ahh well nothin' wrong with spendin' a few $ for a freshen up hey ;)  

So what's the plan from here on in?

You win some, you loose some.

Merli states he has been running his redline at 8k for over 11months, with 280rwkw at 1.2bar and stock internals.

MattR, as long as you had fun dropping it:D

Nah not really, didnt even get a real chance to run the new turbo on boost. Happened on the freeway 3300rpm in 5th. Just one of these things you can never predict, at least I know it wasent in the tuning, all the plugs were a little too rich if anything

I was looking up on dropping a valve and apparently there is tell tale signs before it drops as it becomes extremly burnt and doesn't close properly hence causing a slight miss.

Before the valve breaks away from the valve stem it apparently stretches.

Wont know for sure till the engine gets pulled apart. Will fit new pistons and valves and what ever needs to be done and sell the engine. If anyone is looking for a re-built br25det let me know. Cheers Matt

Originally posted by Steve

You win some, you loose some.

Merli states he has been running his redline at 8k for over 11months, with 280rwkw at 1.2bar and stock internals.

MattR, as long as you had fun dropping it:D

11 months doesn't really mean that much. He might only do 10k a yr & a large % of it may well be mild commuting? How many hard kays has he done on it taking it to 8k? From what I gather Andrew (Merli) is pretty tame on the road, so it'd only be the track days that would be pushing it. Like I said, only a matter of time!

Joel, my car is going good, a electronic boost controller has given it a fair whack more of midrange, but haven't had retune as I am deciding on whats next - probably programmable managment

MattR - good to hear that it will be back on the road soon!!,

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

    • Because all parts that are put into your papers usually are assigned a badging if they did not come with one. So other people can just check that badging to tell if it is the parts your papes outline. But my pipe has NOTHING on it whatsoever. No idea why this even passed as a Mines pipe to begin with. I see this going two ways: -nobody cares and it's a non-issue, but that is unlikely -the pipe will just have to be assigned a bagding, for sake of argument, a Mines logo, and the papers corrected accordingly If it interests you I will post what the actual solution ended up being. All I care about is that it has to sound equal length and nobody can screw me later on because of a pipe being illegal.
    • The fasteners to the pipe are not subject to TÜV I guess, if we really start putting nuts and bolts through technical tests I'm going to hang the people responsible and then myself. Usually on a modern-ish EU normed car, you would just replace the pipe. Because if you start hacking away at it and welding new pieces on the cops will definitely find a reason to tow your car. That is just how it is sadly. On old cars and imports with no clear "standard" stuff like that won't matter too much. Most cops or inspectors probably won't even really know what they are looking at. But there is experts for this stuff even among cops, and some of them know the rules to a T and even have extensive knowledge about many vehicles. For "just a pipe" to be legal it usually is included in a set of parts, like a complete intake kit or a full exhaust. For example my exhaust needs to pass a noise test, meaning they have a standardized test track with a set of instructions and they run the car through there 3x for an average noise value that is 75dB(a) at point x of the test track. If it's above that, fail. For a turbo setup to be put in your papers you have to do dyno runs, emissions testing etc. So quite costly
    • Would this not be the same for the exhaust you've posted up?  If your exhaust volume and emissions are fine, why does the brand of pipe matter? 
    • The issue is more the fact that there is inspectors that deal with japanese cars a lot and they might know what a real Mines pipe looks like. And then they're gonna get antsy and not pass your car. But I'd have to talk to one of them about this, because you know as well as me that it's just a damn pipe and it effectively doesn't do anything. As I need to have my GT2860s and my exhaust setup (and the increase in HP) TÜV'd anyways maybe they can just correct the entry in the papers or assign a badge to the front pipe. I'm no expert either though, will inquire about this.     Thanks for the insight. Not sure if having a custom made pipe is good or not. Will find out in due time I suppose. Would be kind of funny if this was made in Germany though.
    • See this is a really tricky topic as technically the same rules apply to all cars but for cars but there is a difference. If you want to modify a car like the Skyline which never existed here you have a bit more freedom as they do not adhere to EU specs anyway. Any modification you do has to be in dividually checked anyway so as long as one of the inspectors think it's ok and within the TÜV ruleset you can get stuff like a top secret rear diffuser put in your papers. Which frankly would need a shitload of tests and certificates for EU spec cars, like a 2010 BMW M3 for example. But if you DO run these tests and all tests come out ok (safety stuff for the most part) there is no problem running such a part legally. It's just way too expensive to do for a single person on one car. The most touchy parts are emissions related mods, like an exhaust, turbos, air intakes. If it makes noise or alters the carbon emissions it's essentially illegal until you prove it's not. Meaning it doesn't exceed noise limits or have worse carbon emissions. I'd say for hoses if you replace them same same it doesn't matter what material they are or what brand you use. Same for nuts and bolts usually, they won't go and specifically check that your water hoses and some bolts are 100% OEM parts, that is nonsense.
×
×
  • Create New...