i had a e bay t70 t4 .81 turbo . then it then it took a crap 300miles in to it, so time for a new turbo i was thinking gt35r or a gtk650 but i dont know what these spool at. i was looking for bb turbo because they spool faster. i need t4 flange and 3in v band outlet 4in inlet. with that in mind i dont want to waste money on over kill if it not nessesary. what would you do? what exhaust housing to get also thaks


Modified by mkw1 at 3:42 PM 12/17/2007

 

If you dont want overkill and you only want 500hp, then you definately dont need a t4 hotside. A GT3582r would definately get you the power you want though. Theres plenty of t3 hybrid turbos that make 500whp with no problem.

 

im using a t4 mainifold allready

 

Whats the engine setup and what do you need out of this turbo?? You can just get a GT35r and call it a day if you want, but there may be a better turbo for you out there. Have you thought about the Borg Warner S3xx series?? Another point, just because its ball bearing doesnt mean it spools any faster.

 

what would be better? i would like a faster spool then what i had it was starting 5500




Modified by mkw1 at 3:43 PM 12/17/2007

 

Dont you think that anything with a t4 hotside is gonna be pretty laggy no matter what?

 

just FYI, ball bearings in a turbo are more for improving response rather than spool-up time. ball bearing turbos are great for street driven cars because they have better throttle response than a traditional journal bearing turbo.

 

With the T4 exhuast housing, your choices are going to be more focused towards topend power rather than spool. Since you're still on stock sleeves, i would almost consider getting rid of the manifold or getting some kind of adapter down to a T3 size. If it were my choice, i would get a GT30r or BorgWarner S258 because its more than enough turbo for your needs.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by full Circling &raquo;</TD></TR><TR><TD CLASS="quote">just FYI, ball bearings in a turbo are more for improving response rather than spool-up time. ball bearing turbos are great for street driven cars because they have better throttle response than a traditional journal bearing turbo.</TD></TR></TABLE>

I tried to allude to this point in my previous post.

 

why do turbo companys state bb one spools 1000 rpm fast the jounal bearing?

 

They may very well spool faster than the journal bearing turbo of similar size, but it isn't solely because of the BB CHRA. People have this misconception that only because of the BB CHRA the turbo spools faster; therefore, putting a BB CHRA on any old turbo will make it spool faster = false. The BB CHRA combined with the proper compressor and turbine wheel design allow for a more efficient turbo that spools faster (in most instances) and has a broader range of efficiency.

For example, the Borg Warner S2xx and S3xx series compare with the Garrett GT-R series and are non-ball bearing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mkw1 &raquo;</TD></TR><TR><TD CLASS="quote">what would be better? i would like a faster spool then what i had it was starting at5500 full at 6500. </TD></TR></TABLE>


IMO you screwed up getting a t4 in the first place. I've seen people post 600+ whp 1.8-2.0L dynos and they had full boost AT 5500 rpm. I'd suggest you have the T4 flange redrilled for a T3, or you have someone weld on a new T3 flange and grind the port to match. A t3/t67ho would spool faster & make more than 400whp. Hell I've seen semi-built B18's hit 400whp with pump gas and a plain t3/t04e turbo.

As for spool, etc, its mainly marketing. They also make a lot more $$$ when you trash a BB turbo, as you need the entire center housing, and the only people who make it are the turbo manufacturer. Convenient, isn't it?

Its mainly the housings and wheels that lead to the benifits. Compressors like the 60-1 were designed way before you were born, while the GT series were designed with computers in the 90's. To give you an idea, a GT2871r is technically a T25 turbine side, but has enough for over 400whp. Try finding an old T25 turbine that can flow enough gases for 400whp.

Ask people who race, non-bb Borg turbos spool as fast as a similar BB-GT turbo, but make more power...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HiProfile &raquo;</TD></TR><TR><TD CLASS="quote">Its mainly the housings and wheels that lead to the benifits. Compressors like the 60-1 were designed way before you were born, while the GT series were designed with computers in the 90's. To give you an idea, a GT2871r is technically a T25 turbine side, but has enough for over 400whp. Try finding an old T25 turbine that can flow enough gases for 400whp.

Ask people who race, non-bb Borg turbos spool as fast as a similar BB-GT turbo, but make more power...</TD></TR></TABLE>

good info that i didn't know!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HiProfile &raquo;</TD></TR><TR><TD CLASS="quote">Ask people who race, non-bb Borg turbos spool as fast as a similar BB-GT turbo, but make more power...</TD></TR></TABLE>

...and thanks to people like TheShodan and Tony1, Honda-tech is FINALLY starting to believe it

 

anybody use a turbonetics 62-1 t4 .81? i was looking at nitroice40 turbo for sale but i know nothing a bout these turbos and tryng to find info in hard for this would this be a good choice for my needs ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schister66 &raquo;</TD></TR><TR><TD CLASS="quote">

...and thanks to people like Tony1, Honda-tech is FINALLY starting to believe it</TD></TR></TABLE>
Ehemm!!! 2 years I've been pushing these before Tony1. I'm just glad he was finally able to get it to see the results.

 

^^i think you quoted me incorrectly...lol

PS: i edited it, but you cant tell