New Turbo in and tuned

[whatsisname]

8k on stock RB25 internals!

[MattR]

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

[Bl4cK32]

whats goin in now then?

[whatsisname]

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?

[Cubes]

So how do you prevent dropping a valve? Big expensive valves?

I know what I'd be doing MattR..

[Chris32]

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

[Cubes]

Hows your 32 going Chris? Did you end up getting Martin to tune it a bit more to get some more balls out of it?

[MattR]

Car will be up and running next week.

[TIMMMAYYY]

Watcha havin done to it matty?

[Steve]

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  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

[MattR]

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

[TIMMMAYYY]

Where to now? I dont really know what dropping a valve is ? (though i assume it means it hit a piston???? )

[Cubes]

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.

[MattR]

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

[whatsisname]

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!

[Chris32]

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!!,

[EVOIV]

I heard that running a little too rich can be just as dangerous as running a little too lean? Is that true? Anyone had experience?

[Cubes]

Running a little to rich is in to the 9's..

Most manufactures set their cars up to run in to the 10's up higher in the rev's. Helps keep everything cool and prevents detonation i guess.

[MattR]

Well mine was set at flat 12 then when it came on boost it was set at 11. there was nothing wrong with the tuning the plugs were just fine.