Standard Valve Springs

[lozza]

Hey guys,

Just a quick question. Whats the limits of the standard valve springs, kw and psi?

I got the car going in for a tune friday week to suit the current mods on the car at the moment, being nizpro stage 2 w/o valve springs as it was taken off a bf typhoon. I dont have 1000 bucks to do the valve springs, and I currently have a few things waiting on order to be payed for (surge tank, clutch, short shift, plugs etc) I just need to get it retuned for the time being as it is leaning out at very low revs (3500+), overboosting and is just running very rough since I put all the new gear on it. I would rather spend few hundred now than cause some serious damage as is it a daily driver.

For all those saying get it done now, the standard ones are only a temporary fix, so I dont need people say oh just get them done now blah blah blah. The final tune + valve springs + everything else I said before will only be a couple of months off.

Thanks

[typhoon_freak]

when I had my stock engine. the stock springs held 19psi at 370rwkw before they were a problem, engine was a bf f6 engine.

[BensXR6T]

Too many factors involved to determine at what stage they need to be done ... model, kms, how the car has been treated, etc. My '04 BA made 285 with the standard springs quite happily, probably would have gone further, but I changed them due to the car having 100,000kms on the clock and I didn't know the prior service history/treatment before 60,000km.

Know you don't want to hear it, but the valve springs should be one of the first modifications you do.

I'm guessing the kit came with injectors? If so, can't see how it would be leaning out ... more like running really rich, you're lucky that it even started ... these things won't normally run in open loop with larger injectors.

Try to avoid driving the car until it's calibrated to suit your mods, you are risking damaging your engine.

[lozza]

I'm guessing the kit came with injectors? If so, can't see how it would be leaning out ... more

I havnt installed the injectors as yet, they are getting done on friday when it goes for a tune.

Its gotta go in for more work soon when I want alot more power. Clutch, surge tank + new fuel pump, valve springs and a much more agressive tune so its not like they are not getting done, just postponed.

[icer]

I got nizpro v/springs for sale. 200$ 10,000km old. Held 370rwkw with 18-19psi for the 1,000km I had them in till I got new engine

[lozza]

I got nizpro v/springs for sale. 200$ 10,000km old. Held 370rwkw with 18-19psi for the 1,000km I had them in till I got new engine

Hmm that's quite attracting *Beep*.

[fatnsticky]

hi iozza, my car has done 115K, my springs were failing on the "pre-mod" run on the dyno. The car made 144rwkw before the mods and idled poorly after the run because of the springs

[lozza]

Thanks for the insight mate. I have the money sitting there but it will be departed very unwillignly. Hopefully they dont have to be replaced, but worst comes to worst they can be. It still wont let the power increase too much more as the clutch is another factor holding me back. Will update friday arvo on my result.

[lozza]

Made 310.7 rwkrw @ 14psi on stock springs and clutch. I was very impressed.