How do I determine what size Turbo I need?

dbsupra90

toonar
Apr 1, 2005
2,374
0
0
indiucky
high psi 1jz said:
42r hits the hood I believe, I would go 4088, or dbb 67 or bigger PT (garett makes Precision but idk if they will do that).

precision builds their turbos, but yes they use garrett components, or their own.

42/42r can be made to fit inside the hood.

i cant remem off hand, but believe its a 71mm that is big as you can go in an S cover. past that, you'll have to run an H cover (4" in, 3" out comp cover)

regardless, anything bigger than a 67mm is a waste on a stock rev car. even a 67 keeps making power til the rev limiter.
 

figgie

Supramania Contributor
Mar 30, 2005
5,224
16
38
50
Twin Cities, Minnesot-ah
high psi 1jz said:
42r hits the hood I believe, I would go 4088, or dbb 67 or bigger PT (garett makes Precision but idk if they will do that).

as mentioned by dbsupra

the gt42r can fit under the hood. Mine actually sits below the engine valve covers ;)
 

Neodeuccio

Addicted to boost...
Sep 30, 2006
846
0
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Schenectady NY
Now hybrid turbos... if I remember correctly, they use a smaller turbine housing with a larger compressor housing, effectively creating a mid-sized turbo that spools pretty quickly.

1) Is this correct?
2) How well are they liked?
 

Neodeuccio

Addicted to boost...
Sep 30, 2006
846
0
16
Schenectady NY
I deffinately think i need to research this turbo a bit more... this sounds like it could be a winner.

Thanks for the help!!

Ok, I'm off to bed. Gnite.
 

Neodeuccio

Addicted to boost...
Sep 30, 2006
846
0
16
Schenectady NY
IJ-

I did a little looking around online, and I can't find any info on a Garrett 3540R. I've even gone so far as to email Garrett and ask them about it, but I haven't heard anything back. Where did you get yours, and do you know where I can get some specs on it?

Thanks!