Hks Gt3037spro .68 Vs .87 Housing Rb22

[Justa32]

ive decided to go with the 3037spro but i dont no wot housing to go for, im thinking if i get the .68 it will just spin when boost hits would .87 b the better option or would it take to long to hit boost ?? help plzzzz wanna order this thing asap

[Justa32]

guess theres no rb20 lovers here atm..

[STATUS]

.68

[joeyjoejoejuniorshabadoo]

i'd go for the smaller one on the rb20...

[Justa32]

wouldnt that give me alot of wheel spin when boost hits?

[joeyjoejoejuniorshabadoo]

both will

[-_-StRyDeR-_-]

.86 would be more light bulb wouldnt it? that would bring on more spin...

[Dale FZ1]

The 0.68 would be "snappier" as it runs into boost, with an earlier/faster rate of acceleration of the rotating assembly. The 0.87 may result in too slow a rate of spool but certainly give the feel of making lots of power higher up.

Bit of a juggling act to get sufficient bottom end response and torque from the smaller cubic capacity engine, but allow sufficient mass flow through the turbine housing to not choke things higher up as revs and power output rise.

Dependent on what other mechanical modifications are made (manifolding, porting, cams), the 0.68 might prove to be the better match to give area under the curve. Focus on the torque curve.

Edited June 3, 2008 by Dale FZ1

[blitza]

go with the .68 mate

[discopotato03]

My opinions only , take them or leave them .

To me a GT3037 seems like a lot of turbo for a 2L six , some even think they are a bit ambitious on an RB25DET .

If I had to run a 3037 GT Pro on an RB20 based engine I would opt for the smaller or 0.68 A/R turbine housing .

Depending on how much power you realistically expect to make maybe a HKS GT-RS would be a better all rounder in a street car - definately cheaper and easier to fit .

A turbo car doesn't have to break into wild wheelspin as soon as it comes on boost , I reckon that's more an issue of the transition of no boost to too much boost over a narrow engine rev band . If you can get it to make adequate boost initially and ramp up a bit with engine revs you may find the lack of traction less of a problem .

A .

[R31Nismoid]

Smaller housing.

Its gonna spin either way, its a 2.2ltr motor... so its not going to give super linear power delivery however you go about it.

[Justa32]

sry disco but im aiming for 400rwhp ive got an apexi ax53b70 in there atm and thats around the same as the gt2535 so an upgrade to the gt-rs is not worth the money imo an rb20 is going to b laggy no matter what so i think im guna go 4 the .87 will post dyno results when car is done cheers boys

Edited June 3, 2008 by Justa32

[huddy]

i'd got the .68 mate. it will definitely make for a fun drive!

My RB24 has a GT3076r with .63 housing so it'd be great to see the results once you've got it all sorted

[joeyjoejoejuniorshabadoo]

will post dyno results when car is done cheers boys

better yet... post when it finally hits boost

[Justa32]

lol i liked that last post, after lots of searching around ive decided to go 4 the .68