Turbo spooling question?

[cameron]

hi guys,

I was just wondering what you mean by when the turbo is spooling,

when the pod starts sucking or when the boost guage moves past 0 psi

I went for cruise in bro's 1995 series 2 r33 gts25t last night and the pod starts sucking straight away but the boost spikes and holds 15psi on the boost guage at 4,500rpm then it's ready to chuck you back into your seat at 5,000rpm ?

when does it hit boost so late?

and why doesnt it spool earlyer ?

could this be a problem with the turbo.. ?

here are some pics of turbo

http://forums.skylinesdownunder.co.nz/show...&threadid=29589

cheers

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If you in control you not going fast anough!!!

[predator]

hi guys,

I was just wondering what you mean by when the turbo is spooling,

when the pod starts sucking or when the boost guage moves past 0 psi

I went for cruise in bro's 1995 series 2 r33 gts25t last night and the pod starts sucking straight away but the boost spikes and holds 15psi on the boost guage at 4,500rpm then it's ready to chuck you back into your seat at 5,000rpm ?

when does it hit boost so late?

and why doesnt it spool earlyer ?

could this be a problem with the turbo.. ?

here are some pics of turbo

Well running 15psi is probably one the reasons for a start! you're probably running heaps out of the stock turbo's efficiency range, and it probably won't last too long at that level. It looks like a stocker too btw. Yeah, you get that rusty colour - my exhaust housing is like that too.. octane booster? i doubt it.. more like just the water that goes through it to cool it.

Could be a number of other factors too, possible boost leak somewhere, turbo seal, looks like he's running a bleed valve which isn't the best way to build up boost either, etc

[cameron]

Yer,

I was thinking its a different turbo because we run 15 all the time, and hit 18 lots and even 20 psi lots times and if it was stock turbo i tell ya it would have blown by now,

yer i dont think the bleede valve is helping much..

yer everyone saying that its octane booster which gives you the colour on exhaust side..

will have to check it out look for any leaks etc:

still dont know why it hits boost so late ? its getting quiete anoying you.. you put your foot down and have to waite till 5,000rpm for it to throw you back in ya seat !

[cameron]

on the stock boost solonoide, it use to do the same,

at 4,500rpm it would hit full boost and throw you back... the original built in boost guage was falty.. because it only went to 6 psi.. but when we put a aftermarket one on it was on 9psi ?

oh just a quick one none related... are aftermarket speedo guages illegal in your car in queesland ? got pulled up by a sargent (cops) and he said that it has to have 180kmh speedo ??? :S (i have the standard one on but was looking at putting nismo one on)