jDMJeRk

Well my motor is finished now so its time to move on to the fun part of it; the turbo.

I researched a little bit and Im still stuck on "what turbo is right for me"

I have a jdm y1 w/lsd tranny that I would like to use for my boost project. Apon reading posts I found a few posts on things like the shorter geared trannys are not good for big turbos because they wont reach full boost in time. Is this true? I still have my org. LS tranny laying around; Am I better off using this one?
My goal would be to put the LS 5th in the y1 so I have a good freeway gear and good top speed......

What would be a good turbo to run with a short geared tranny that would reach full boost around 3-4k (if not sooner) and still pull to redline AND be able to pump out a large amount of psi (say 20psi or so?)

Im still a noob in forced induction, mainly on just the actual turbo part of it (what trims mean, a/r ratios, ect) Any information or urls would be a for you

Thanks for reading!

pissedoffsol

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmjerk &raquo;</TD></TR><TR><TD CLASS="quote">Apon reading posts I found a few posts on things like the shorter geared trannys are not good for big turbos because they wont reach full boost in time. Is this true? I still have my org. LS tranny laying around; Am I better off using this one?
</TD></TR></TABLE>

no no no no no and no.
search again.

longer = slower.

all the time, all motor, all boosted, or on a 10-speed bicycle.

end of story.

a b16 tranny will hit 145-155 ish on a 205/50 15
do you honestly need to go any faster?

kabaroo

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

a b16 tranny will hit 145-155 ish on a 205/50 15
do you honestly need to go any faster?</TD></TR></TABLE>

i think he means for comfort, lower rpm in 5th for highway criusing.

jeremy.

pissedoffsol is correct....staying in boost longer means accerlerating slower

jDMJeRk

Now Im confused...you didnt really state exactly what your talking about pissedoffdelsol

longer=slower; what did you mean the trannys?

I know shorter gears are faster period; but that wasnt question. My question was
Will I reach full boost in a b16 tranny or is it too short or would I be better off using my LS tranny

Did you guys have any suggestions for a turbo? Ive been told to check out sc61 and a sc63

thanks again

jDMJeRk

bump for the afternoon

jDMJeRk

pissedoffsol

longer gearing = slower acceleration with a higher top speed; boosted, all motor, or riding your bike.

a tranny won't effect your spool time. it will still hit at XXXX rpm's, and not only that, but with a TIGHTER tranny, you will get to XXXX rpm's SOONER.

There is only 2 times when a longer tranny is better than a shorter one - if you want to hit 250 mph, or you want to get 50 mpg (like in an HF crx).

For performance, its all about being close.

For your question, not only will you hit full boost in your b16 tranny, you'll hit it sooner (distance wise) than in an Ls tranny because you have gone say, 30 feet to hit 4000 rpms, instead of 100 feet hit 4000 rpms.

Use the b16 tranny if you got it... but IMO, a gsr is the best choice for a street car. still closer than an ls, and still will keep highway revs in check better than a b16 would.

as for the sc61 vs sc63, i wouldn't even cosnider an sc63 on a b16.
the sc61 has been done, but IMO, it's still too big for the spool you want.

SC34 is what I would run on a b16. talk to Arturbo. he can offer you more info about precision turbos.


Modified by pissedoffsol at 10:21 AM 4/15/2004

m R g S r

Exactly. Shorter, closer gearing means that you'll accelerate faster, and when you shift, keep the RPM's up where your motor actually makes power.

00siBuilder

Its on personal preference as well.

Im going to be using gt30 or sc61 for highway car
and gt25 for street car...... lots of people liek to run turbos that are just to big for the street.
Whats good for the track(with Tall Slicks) is not always good for the street.... different amount of traction applies...... and different situations.

I personaly am thinking of opting for the ls/tranny to make a car strictly to race on highways here in florida. I found one cheap locally

The nicer thing about it is every time ive broken anything on my car it has been because of launching it, axles, alignment, transmission, front end came off once.
(forgedinterals bottomend ls/vtec, quaife dif, street tires)
With the ls tranny i wont even bother racing from light to light..
(where most accidents happen)
I was topped out in my b16 tranny on the highway and friend running an Ls transmission blew by me like i was standing still
(but i would get him on acceleration)
if want to put as much power down as possible wtih good gas milage and awsome cruising on the highway, and build a BRIDEKILLA use the ls.

You racing lgiht to light, or at the track pick b16 or gsr. gsr is a litter longer.

I have also driven b16 tranny with ls finaldrive, it worked out very niceley and i liked it. (still killed my b16 in top speed)

jDMJeRk

that was a great post; Thanks for your knowledge you pissedoffsol lol

jeremy.

how about when you make too much power and traction becomes a huge issue...is that when people use a gsr tranny instead?

pissedoffsol

fighting traction by changing gearing is like trying to paint over a hole in a wall isntead f repairing it.

it works to a certain extent, because it slows you down in the long run

but really, the problem is your tires, yoru suspension, and most importanly, your control over your right foot.