Engine/Transmission (1994 - 1998) phat shaft vs. htb2...differences

[jkh]

What is the differences between these two turbos?Any preferences?

 

[16919]

Pretty comparable turbos just different brands. I have a II Super Phat Shaft myself... ...

 

[EBung]

Some people have said the II has more work done to the wastgate and ex. housing.

 

[Forrest Nearing]

my experience is HTT opens their gates too early. easily overcome w/ some adjustment. no major difference, whatever you can get a good deal on. paying the same money, I'll pick II every time

 

[jkh]

What kind of boost are they opening at because I wouldn't want a lot of boost anyway. I heard if you go over 40 lbs you have to have studs and I would rather not get into that(limited funds,ya know).

 

[16919]

Well you can go a little higher than that... 55 psi is the limit from what I was told. Drive pressure is a key factor... . i'm sure the turbo gurus will chime in. I consistently run around 45 psi and have bounced around 50 now and then... . FWIW

 

[Forrest Nearing]

on a 12v, 40psi is kinda the magic number... safe to say you won't have a problem there...



I ran 42psi out of an HX40 on my 97 12v for a long time.



45psi is kinda pushing it... 55 is beyond the limit IMO. for a 3rd gen, 55 may be alright, but for a 12v, I wouldn't do it!

 

[16919]

on a 12v, 40psi is kinda the magic number... safe to say you won't have a problem there...

I ran 42psi out of an HX40 on my 97 12v for a long time.

45psi is kinda pushing it... 55 is beyond the limit IMO. for a 3rd gen, 55 may be alright, but for a 12v, I wouldn't do it!

I have a 2nd gen 24v HO if that makes a difference... I didnt see that his ride was a 12v...