Touge Tuning

What do you guys think is the best turbo for a B18B1 motor? My goal is to make over 240tq at 10psi and more at 15psi for track use. The car will see mainly street driving and a few 1/4 mile passes. I was thinking T3/To4e 50Trim or 57 trim but someone has mentioned that a 60trim T3 would be better?

blackeg

t3/to4 57 trim, because the compressor map says so

Touge Tuning

what would the differences be between the 50 and 57 Trim?

Should i consider a T3 60 trim, obviously there is a reason the person suggested it im just looking at why and how much of a difference it would make

TheShodan

iTrader: (14)

I'd have to say the GT3251B in a B cover for that.. used them all the time. Even more responsive than a 57 trim... and very reasonably priced

Touge Tuning

got a link to that turbo?

blackeg

that gt32 has got to cost a pretty penny. the t3 is too small for you to run 15psi on, and will be working its way out of efficiency, although it would be pretty responsive. your power would drop like a rock after 6200ish.

the 57 trim fits the ls nicely, its what i plan on using. here is a link to the compressor map

http://www.turbocalculator.com...7.jpg

Touge Tuning

wouldthe 50 trim spool fast or is it pretty much the same?

Makdaddynuge

i believe the 50 trim will spool faster but you will lose top end, correct me if i am wrong guys.

johnny5gti

50trim should be fine, 57 trim is good choice also

alpha

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TheShodan &raquo;</TD></TR><TR><TD CLASS="quote">I'd have to say the GT3251B in a B cover for that.. used them all the time. Even more responsive than a 57 trim... and very reasonably priced</TD></TR></TABLE>

+1

I would recommend the same but with an E compressor cover. The GT32 is a non ball bearing turbocharger so no it does NOT cost a pretty penny

blackeg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 0x64 &raquo;</TD></TR><TR><TD CLASS="quote">

+1

I would recommend the same but with an E compressor cover. The GT32 is a non ball bearing turbocharger so no it does NOT cost a pretty penny </TD></TR></TABLE>


my bad. i thought that the gt series were all ball bearings. hey, we are all wrong sometimes

Touge Tuning

Is this the one you are talking about?

http://store.yahoo.com/cheapturbo/garrettt28.html

Would this turbo below be too big for my application?

http://store.yahoo.com/cheaptu....html

Basically i dont wanna be limited to power because of the turbo but i also want to have a very usable power band for the street.

alpha

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackeg &raquo;</TD></TR><TR><TD CLASS="quote">my bad. i thought that the gt series were all ball bearings. hey, we are all wrong sometimes</TD></TR></TABLE>

It's cool. I didnt intend for my post to come off negatively

https://honda-tech.com/zerothread?id=763809

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by scarlemthug &raquo;</TD></TR><TR><TD CLASS="quote">Is this the one you are talking about?

http://store.yahoo.com/cheapturbo/garrettt28.html

Would this turbo below be too big for my application?

http://store.yahoo.com/cheaptu....html

Basically i dont wanna be limited to power because of the turbo but i also want to have a very usable power band for the street.</TD></TR></TABLE>

Neither of those are the GT32. I dont want to link to a particular web-site so contact a Precision dealer on Honda Tech (Arturbo, ForcedAir, TheShodan, Lightning, This One, etc). The GT3251E is perfect for your goals.

Touge Tuning

Is this the turbo you are talking about?

520 GT-32 71, 76mm 52 .5 Standard 64 mm 73 .78

What would the difference be between the GT-32 and the GT3251E you mentioned?

Approx how much do you think retail would be on the turbo?

Touge Tuning

I also found this on the precision site

520 GT3255E w/ T04E cover 54 2.158" 2.992" 52 3"/2" 360 0 GT32 2.520" 2.153" 73

alpha

Contact a Precision dealer about pricing. It wont break the bank.

* GT3251
51mm Inducer Compressor Wheel
71mm Exducer Compressor Wheel
52 Trim Compressor Wheel

64mm Inducer Turbine Wheel
54mm Exducer Turbine Wheel
72 Trim Turbine Wheel





* GT3255
54mm Inducer Compressor Wheel
76mm Exducer Compressor Wheel
52 Trim Compressor Wheel

64mm Inducer Turbine Wheel
54mm Exducer Turbine Wheel
72 Trim Turbine Wheel

wisjdmhonda

i just had to make this decision. i went with the precision sc34 57 trim .63 a/r.

Brand

i went with a t3/t4 57 trim .63 a/r for my turbo build

Touge Tuning

So the only difference between the 3255 and 3251 is in the compressor. This is just a guess but the 3251 wouldnt flow as much air but it would spool faster than the 3255 and the 3255 would produce more peak hp/tq but spool slightly later?

I am probably wrong but just a guess.

Brand - Why did u go with the T3/T4 57 trim?

wisjdmhonda - Is the SC34 57 trim the same as the T3/T4 turbo?

alpha

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by scarlemthug &raquo;</TD></TR><TR><TD CLASS="quote">So the only difference between the 3255 and 3251 is in the compressor. This is just a guess but the 3251 wouldnt flow as much air but it would spool faster than the 3255 and the 3255 would produce more peak hp/tq but spool slightly later?

I am probably wrong but just a guess.</TD></TR></TABLE>

Good guess

Touge Tuning

So for the best powerband for street use the GT3251E which you suggested would be the ideal turbo. Now to find a good deal on one or maybe ill get lucky and i can get it included in the kit im suppose to buy.

4U2NV

When my LS was boosted, I ran a T3/T04E with a 57 trim compressor wheel w/ a .60 a/r housing and .48a/r exhaust housing w/ a stage 3 wheel... I loved that turbo... With a blip of the throttle it would hit 0 vaccumm easily, and made full boost (10.5 psi) by about 3,800 rpm...

Touge Tuning

See thats what makes me think the T3/To4e 57 trim would be good for my setup. Such a hard decision when there are so many options.

18G_prelude

as soon as i get my boosted ls with a gt3251e done i'll post some numbers

alpha

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 18G_prelude &raquo;</TD></TR><TR><TD CLASS="quote">as soon as i get my boosted ls with a gt3251e done i'll post some numbers </TD></TR></TABLE>

And people here can see what the GT3251E is capable of on a B18b