5-speed + 600-700rwhp = ??

[DaveH]

I put the stock 5-speed back in my car today since we don't have any drag events for a couple weeks. I'm gonna do some tuning with it, since it's much easier to tune with this rather than the auto and loose converter (plus the auto gets really hot after a few consecutive pulls). I have a clutchmasters stage 4 clutch, the pedal pressure is a bit more stiff than I like, but it is holding well so far. I went out and did a few pulls with the boost at 25 psi, which should be well over 600 rwhp. The car does seem to accelerate harder with the manual trans vs the auto. I've already found a few flaws in my tuning, this should be good.... get the tuning dialled in and then crank up the boost. We'll see what the W58 will take. :ylsuper:

ps: I'm running a trans blanket just in case.... :ohnoes:

[DaveH]

Oh, I can finally watch and see how the GT42 spools. It starts making positive boost around 3000rpm, and full boost around 5000rpm.

[scnat]

and check your pm

[Supra4ever]

You are the man, good luck, with your driving skill, it should last a while.

[justins_supra]

your saying the stock 5spd is holding 600-700hp?

[DaveH]

So far it's holding over 600 rwhp, how long it will hold is a mystery. Doing some tuning today and will be cranking up the boost. This turbo should make over 800rwhp fairly easy, so it will be interesting.

[2jzget]

So far it's holding over 600 rwhp, how long it will hold is a mystery. Doing some tuning today and will be cranking up the boost. This turbo should make over 800rwhp fairly easy, so it will be interesting.
Please post results as soon as you can

[96sc3]

you are the man, i hope to hear good news. you give me hope for my w58.

[dejacky]

How about using an OIL cooler for the W58. Another SF member told me when his w58 failed, the shifter was very hot. So, perhaps using a good transmission oil cooler can help to prolong the 5 speed's life? :eek2:

[DaveH]

So far so good.....

We went out and did some tonite today, man the 5-speed rocks for tuning! The big turbo definitely needed tuning, as it went way lean on top compared to the PT72 on the same tune. All was good, a/f in the mid 11's until around 6200 and then the a/f slowly went lean until near redline it was 13:1!!! If I would have heard my buddy yell I definitely would have let off the throttle.... thx to race gas for not letting the motor blow.
We added a ton of fuel up top and then did some fine tuning at base boost of 23 psi. Then we turned the boost up incrementally and tuned each boost level until we were up to 30 psi. The car hauls butt at upper boost levels. The GT42 really wakes up at high boost.

disclaimer: All tuning was done by trained professionals on a closed course... I was looking through the datalogs and the car goes from 80 to 130 mph in almost exactly 3 seconds.

[2jzget]

XXX WHP@ 30psi?

[DaveH]

XXX WHP@ 30psi?

If my tuning is decent, it should be over 800 rwhp. Can't say for sure without putting it on a dyno tho.

[2jzget]

If my tuning is decent, it should be over 800 rwhp. Can't say for sure without putting it on a dyno tho.

On a stock GE botom end?

[DaveH]

On a stock GE botom end?

Yes, stock engine except for the HG and ARP head studs. I ran it to 8200 rpm a few times doing pulls.

[thirtysix_36]

the car goes from 80 to 130 mph in almost exactly 3 seconds. :eek:

Dave, is that in 4th gear? Also what diff ratio have you in?

[DaveH]

That was 3rd gear, once the car makes serious boost (~5200 rpm) to the end of the run (~8000 rpm), I have a TT auto diff (3.77:1). I did one pull through 3rd and then 4th gear, it goes through 4th gear about as quick as it goes through 3rd. :naughty:

[SupraPL]

I put the stock 5-speed back in my car today since we don't have any drag events for a couple weeks. I'm gonna do some tuning with it, since it's much easier to tune with this rather than the auto and loose converter (plus the auto gets really hot after a few consecutive pulls). I have a clutchmasters stage 4 clutch, the pedal pressure is a bit more stiff than I like, but it is holding well so far. I went out and did a few pulls with the boost at 25 psi, which should be well over 600 rwhp. The car does seem to accelerate harder with the manual trans vs the auto. I've already found a few flaws in my tuning, this should be good.... get the tuning dialled in and then crank up the boost. We'll see what the W58 will take. :ylsuper:

ps: I'm running a trans blanket just in case.... :ohnoes:
Is your 5 speed gearbox still in one piece?

[bigbloodyturbo]

what sort off torque numbers have you put through that w58, i imagine with over 600whp it would be over 500lb of torque, if it can do it then thats definately thought provoking!

[Dramon]

How about using an OIL cooler for the W58. Another SF member told me when his w58 failed, the shifter was very hot. So, perhaps using a good transmission oil cooler can help to prolong the 5 speed's life? :eek2:

You'dneed to find a way to circulate the fluid through the cooler since manual trannies dont have a pump like autos.

[2jzget]

Is your 5 speed gearbox still in one piece?
naturally not :doh: j/k
But it did blow

[Bean]

Yeah lol; anyone notice that this post was almost two years ago? :D