60 trim with .48ar laggy

[speedup]

a 60trim with a stage 3 turbine and .48ar at what kind of rpm he will spool

thanks

[tamadx]

Quote: Originally Posted by speedup

a 60trim with a stage 3 turbine and .48ar at what kind of rpm he will spool

thanks

the average seems to be around 3800 for full boost

[nutz]

Quote: Originally Posted by speedup

a 60trim with a stage 3 turbine and .48ar at what kind of rpm he will spool

thanks

dont do it, the .48 a/r negates the whole big turbo, 60 trim is better for flow not pressure (lower psi with more cfm), so you will get more back pressure and hotter temps with a 48 turbine that has a compressor designed for low psi and cooler temps sounds like surge city to me

GET A PROPERLY SIZED TURBO

[91PumpKing.]

w/ a .48ar and 3800? or are ya talkin about normal?

my 50t/.48ar hits 20psi by 31-3200. a 50t/.63 does so at 34-3600 on avg.

so basically take w/e youre spoolin now, and cut it down by ~400rpms. the problem you will probably run into is the issue that the 60t will probably surge to no end on a .48ar..

[speedup]

ok thanks

i thinl i will go with a 50trim with .48 ar must be better as a daily driver

[nutz]

Quote: Originally Posted by speedup

ok thanks

i thinl i will go with a 50trim with .48 ar must be better as a daily driver

for a daily driver i would strongly recomend a stage 3 kit, it may look expensive but after all costs are accounted for it will be much cheaper than a big turbo kit, without the hastle of tweaking it all the time


just trust me on this one

[onthedwnlow]

.48 back half is great setup for a street car......the egt are not much lower than a stock turbo but it helps the little beast spool up fast.....

anyone that does not go to the track often and just like the stop light to stop light stuff.....or auto cross should consider a .48 ar 50 trim

[speedup]

ive already have a manifold o2 housing and external wga the only thing thats its left to buy its the turbo and make a wga dump tube

and i want more power that the stage 3 would ever give me for less money

[onthedwnlow]

get a .48 50 trim......same spool caracteristics.....capable of more power.....

[tamadx]

Quote: Originally Posted by 91PumpKing.

w/ a .48ar and 3800? or are ya talkin about normal?

my 50t/.48ar hits 20psi by 31-3200. a 50t/.63 does so at 34-3600 on avg.

so basically take w/e youre spoolin now, and cut it down by ~400rpms. the problem you will probably run into is the issue that the 60t will probably surge to no end on a .48ar..

Yeah i didnt take that into effect....witha .63 full spool is aorund 3800....

You think surge happens with a smaller AR? Couldnt it still surge with a .63? or less often?

[91PumpKing.]

Quote: Originally Posted by tamadx

Yeah i didnt take that into effect....witha .63 full spool is aorund 3800....

You think surge happens with a smaller AR? Couldnt it still surge with a .63? or less often?

yes surge happens when the compressor is too large for the turbine wheel and/or turbine housing and is sucking in more than what it can push out.

so it ends up being a choking point and the exhaust reverts back thru the system...

thats basically what surge is.

if you have surge w/ the .63 now, itll be TONS worse w/ the .48

[ChrisUlrich]

Bullseye S256!! 20psi @ 3k!

Or FI56 from Forced Inductions!! S256 but better!! Wohoo!!

[91PumpKing.]

^^^


a 56lb/min nondbb turbo is not going to spool FASTER than a 50trim/.48ar or dbb50.

ive had word from 2 people that have owned the s256 on what they spool like, and its nothing of that nature.

[bpsrt4]

I was just going to say something similar...my 3147 w/ .63 hits 22 psi around 3100-3200 thats only a 47lb wheel...but I haven't tried it on the new mani yet

[onthedwnlow]

you guys suck on getting turbo's to spool.......i have no prob getting my big boy to spool