I was talking to the guy that will be installing my turbo and he said that in his kit, he includes a .47 a/r, 60 trim turbine. a lot of people on HT i hear use something much bigger like the .63 a/r, 60 trim.


what are the pro's/cons of the .47 a/r and .63 a/r turbines?

What do most of the <U>STREET DRIVEN</U>, daily driver b18's have on HT?

 

anyone?


just post what you have on your car!

 

i'm pretty sure most people run the .63 a/r turbine or larger. A .48 a/r turbine will limit overall output on a 1.8

 

with the .63 a/r you will make power all the way and pull till redline. i never heard of people using the .43 on a b18. that seems really small

 

ok, thanks

 

most kits like RevHard Mfg use a

.57 trim .60 a/r intake side stage 3 .63 a/r exhaust side

the smaller the trim the faster spool up
the smaller the a/r the quicker spool up or is it the other way around.. but anyways

hope this helps

 

the smaller the a/r, the faster itll spool if the trim isnt tooo huge.
the bigger the trim, the more potential air flow your turbo can carry into the engine.

if your a/r is too fast, itll spool too fast, youll get power too fast, and spin when luanching, if its too big you wont get power till 6

when do most of you guys with .63 /ar & 60 mm trim reach full boost?

 

around 4k-4.5k rpms

 

and with too small a A/R with a larger Disp motor, the Backpressure will be too huge in the upper RPMs. So pressure is built up into the exhaust track and back into the cylinder because it can't flow forward fast enough. AKA "Falling flat on its face"

 

hmmm... my tuner was like, i suggest the .47 since the .63 will prob not spool until 6 or 6.5


can someone say this is deffinatley false ?

 

go for the .63

 

https://honda-tech.com/zerothread?id=197981
Looks like exactly what you were looking for

 

thanks

 

That is what I got with my Rev-hard and it was the perfect turbo for my car on the street. My new turbo is a little laggy, but make up for it on the top end.

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