Rb20det With Vl T Quick Spool

[EVL032]

i put on a high flowed, steel bladed VL turbo onto my rb20det and originally spooled up at 4 grand which i was told was about normal...

anyways i had a turbo rattle so i pulled the xhaust off to find out the wastegate flap in the back of the turbo was loose, so we bent the wastegate actuator arm to tighten it up... now the car spools up at 2100rmp and 15psi by 2600rpm, is this safe having the wastegate so tight???

does anyone know???

anyone got a VL T on a rb20det wats your spool up???

thankyou

[EVL032]

somebody/ anybody

[Bass Junky]

Can't really be that much of a problem I wouldn't think

Makes sence that if the wastegate was loose, the air was bypassing the turbine, hence late spooling.

Count your blessings that you are fully boosting at 2600 on an RB20 with high flow, plain bearing turbo!!!

BASS OUT

[EVL032]

so far so good does anyone else know

yeh i got a rebuilt engine with forged internals dunno if that makes a diffrence with the spool up time....yeh i am just as shocked as you

[sproosy]

if you got some headwork doen when you got the rebuild done it would make it spool quicker. By headwork im referring to a port and polish or bigger valves.

[EVL032]

just forgeys and bored out 20"....

neways on the topic does anyone know if this is dangerous in regards to wastegate being so tight?

if you got some headwork doen when you got the rebuild done it would make it spool quicker. By headwork im referring to a port and polish or bigger valves.

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[StockyMcStock]

if the boost is still being controlled okay then there is nothing to worry about. sounds like it was badly adjusted before and wasn't sealing properly.

[R31Nismoid]

i would like to know how a bigger turbo.. hiflowed... t03 off a VL that would normally come on around 2500 on the 3ltr...

comes on almost the same as a motor 1000cc less...

[EVL032]

its got me f*#%#@ but its good tho well sort of its a bit too responsive.

how ever if i give boost up and let go after my flutter there is a small hissing sound which goes away a couple of seconds later!

could this be beacuse the door closes so quickly sum air is still stuck and can only just escape out not flow out like before?

or is this a diffrent problem?

i would like to know how a bigger turbo.. hiflowed... t03 off a VL that would normally come on around 2500 on the 3ltr...

comes on almost the same as a motor 1000cc less...

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[R31 POWER]

By the sounds of it that spools up to quick,are you sure it is a flowed VLT turbo?

[EVL032]

sorry but i might not be an xpert but i know enough!

and yes it is a VL T hi flowed and yes it really does have steel blades

and for sure its bigger than my rb20 turbo

By the sounds of it that spools up to quick,are you sure it is a flowed VLT turbo?

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[HYBRID VL]

im in the backward case lol i have the RB20 T03 on my RB30DET lol spools up 2 fast just waiting 4 a clutch change and ill be putting my TO4B on but yer thats seems 2 be a very good spool up time for an old timer T03.

mine comes on full boost like 2000rpm or somthin im only running 10 psi and making 150rwkw.

whats it like up top end like duz it tapper off and at wat RPM and also what exhaust AR you got just asking if you know cause if you have like a .64 AR and it spools up that fast on a 2Lt thats mad maybe u found a cheap way to upgrade ya turbo lolololol ??

[Cubes]

The RB20DET turbo is a little small for the 3ltr.

I find it has the meat of the power between 2000-3500rpm, after that it doesn't feel as nice but still rev's to ~5000rpm where it asks for a gear change.

if I over rev then it drops the next gear out of the meat of the power and instead of acclerating and making more power it accelerates as power drops off

Its a bad match in the R32, especially with its short gearing.

[EVL032]

yw its very intresting like i am happy with the power form the rb20 turbo i think this one has more punch and i can boost higher with the steel blades but yeh i agree with your Rpm vs power! i have loosend up the wastegate and now i got spool at 2800 15psi by 3400rpm or there about i think thats a little bit better for the rb20det engine, but yeh i dunno i get dynoed in two weeks i was at 160kw before hand lets see wat happens now!

The RB20DET turbo is a little small for the 3ltr.

I find it has the meat of the power between 2000-3500rpm, after that it doesn't feel as nice but still rev's to ~5000rpm where it asks for a gear change.

if I over rev then it drops the next gear out of the meat of the power and instead of acclerating and making more power it accelerates as power drops off

Its a bad match in the R32, especially with its short gearing.

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