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-   -   how many people have 380 bhp or close on a classic box? (https://www.scoobynet.com/general-technical-10/930177-how-many-people-have-380-bhp-or-close-on-a-classic-box.html)

sonic93 26 March 2012 09:24 PM

how many people have 380 bhp or close on a classic box?
 
and for how long i got a type r v3 ov with the dccd box running 380 with 360 ft lb and clutch slipped when raised boost so we down a tad and fine . Any time soon im gonna need a clutch or do i start saving 6 speed ? or will i be fine with 380 on my box? its done 60k. cheers rob

addi monster 26 March 2012 09:27 PM

im at 352/340 and its eaten a few box's already (classic wrx)

Terminator X 26 March 2012 09:29 PM

Torque is the killer rather than hp ;)

TX.

JdcTypeR 26 March 2012 09:39 PM

I think Mattyb is running around that sort of power in his using a P1 box but not sure for how long.
I put a six speed dccd box in my type r as i was worried about the 5 speed sh*tting itself.
Whats 380/360 like in a classic as i'm hoping to see that or more in mine when run in?

jimbob202002 26 March 2012 09:59 PM

i have 378bhp 380ftib at 1,7bar on a 5 speed box excide clutch no probs at all for over a year and a half :-) spose it all depends on how you drive i just dont do any launching in 1st and iv had no prob

kevvy72 26 March 2012 10:27 PM

torque is the killer not the bhp,you got thar right....

i got 355bhp an 408 torques in my wrx 2.5 06 5speed

chrispy200+ 26 March 2012 10:49 PM

My motor ran with 360/380 for a fair few years, then was around the 370 for a bit then a very short burst at 429, but I've gone 6 speed now

RICHARD J 26 March 2012 11:11 PM

My V3 STI was running 440 BHP on Meth before it blew a head gasket. The box was still OK but slightly noisy,but Iv got a 6 speed to fit when the engine is rebuilt. If driven hard you will kill a 5 speed at 380 or over.

Floyd 27 March 2012 08:29 AM

In my experience, the very first time I put my foot to the floor on the accelerator, in third gear after a remap to +330lbft of torque, the gearbox went bang. Those that have boxes lasting at this level are either kidding themselves that they have the power/torque or are extremely lucky.

99greenwagon 27 March 2012 09:01 AM

but are all these comments referring to the "strenthened" dccd box?,the 752 dccd box from a type r has stronger/widened 1st,2nd,and 3rd.:wonder:

Doobs Scoob 27 March 2012 09:05 AM


Originally Posted by Floyd (Post 10551650)
In my experience, the very first time I put my foot to the floor on the accelerator, in third gear after a remap to +330lbft of torque, the gearbox went bang. Those that have boxes lasting at this level are either kidding themselves that they have the power/torque or are extremely lucky.

Everyone drives differently and changes oils etc at different times,... All depends how you look after the box. Just cause your box went bang may mean you are just unlucky?:thumb:

Davros 1979 27 March 2012 09:08 AM

Just shy of 400/400 here. Been fine for 15k+

No launches.

New_scooby_04 27 March 2012 09:23 AM

The ONLY practical advice the OP can be given in these circumstances is

Can you afford to replace said box if with a 6 speed if it breaks?

If not, drive carefully untill you can!!

Sprint Chief 27 March 2012 09:48 AM

As 99greenwagon notes, it isn't just about being a 5 speed, it's about which variant of the 5 speed box you have. And it isn't as simple as TY752 vs. TY754 either, some TY752s are stronger than some TY754s, and some TY752s are completely pants :)

Internet rumour has it that the STi 3/4 type R has stronger 1st/2nd/3rd gears than other TY752s, including 3/4 STi boxes. I'd like to verify this but I've certainly seen people running power through these boxes that would instantly kill an other TY752s, so it at least seems plausible.

Ultimately the 6 speed gives you more strength, but there are other cars running more torque than you have through that gearbox. I'm watching them very closely to see what happens!

Shaks-STI 27 March 2012 09:54 AM

Im running 366.1bhp and 380lbft fine so far.

99greenwagon 27 March 2012 10:22 AM


Originally Posted by Shaks-STI (Post 10551730)
Im running 366.1bhp and 380lbft fine so far.

752 dccd box?

99greenwagon 27 March 2012 10:22 AM


Originally Posted by Sprint Chief (Post 10551722)
As 99greenwagon notes, it isn't just about being a 5 speed, it's about which variant of the 5 speed box you have. And it isn't as simple as TY752 vs. TY754 either, some TY752s are stronger than some TY754s, and some TY752s are completely pants :)

Internet rumour has it that the STi 3/4 type R has stronger 1st/2nd/3rd gears than other TY752s, including 3/4 STi boxes. I'd like to verify this but I've certainly seen people running power through these boxes that would instantly kill an other TY752s, so it at least seems plausible.

Ultimately the 6 speed gives you more strength, but there are other cars running more torque than you have through that gearbox. I'm watching them very closely to see what happens!



good post.:thumb:

99greenwagon 27 March 2012 10:23 AM


Originally Posted by Davros 1979 (Post 10551680)
Just shy of 400/400 here. Been fine for 15k+

No launches.

but which box are you running?

sonic93 27 March 2012 10:45 AM

I'm gonna change clutch see what happens . What clutch would I be ok with at this level? Pink box?
Feels rapid at 380 in classic and smooth just pulls pulls

Shaks-STI 27 March 2012 10:46 AM


Originally Posted by 99greenwagon (Post 10551761)
752 dccd box?

Yes mate, and before anyone wonders how did i make that much torque is because i have a EJ257 :D

Davros 1979 27 March 2012 11:42 AM

752 mate. V4 STi Type R


Originally Posted by 99greenwagon (Post 10551764)
but which box are you running?


Davros 1979 27 March 2012 11:43 AM

Another EJ257 user here on standard box.

You forged it?


Originally Posted by Shaks-STI (Post 10551792)
Yes mate, and before anyone wonders how did i make that much torque is because i have a EJ257 :D


Shaks-STI 27 March 2012 12:32 PM


Originally Posted by Davros 1979 (Post 10551867)
Another EJ257 user here on standard box.

You forged it?

Yes mate fully forged.:thumb:

99greenwagon 27 March 2012 01:51 PM


Originally Posted by Davros 1979 (Post 10551864)
752 mate. V4 STi Type R

:cool:

sonic93 27 March 2012 08:49 PM

What clutches u boys using ?

addi monster 27 March 2012 08:54 PM

exedy pink box one for me, 352/340 and no probs, oh and thats in a 752 classic.

ronjeramy 27 March 2012 09:43 PM

Whats the v5 sti type r dccd box like? Is it one of the stronger boxes? Cheers :)

TonyBurns 27 March 2012 09:46 PM


Originally Posted by Sprint Chief (Post 10551722)
As 99greenwagon notes, it isn't just about being a 5 speed, it's about which variant of the 5 speed box you have. And it isn't as simple as TY752 vs. TY754 either, some TY752s are stronger than some TY754s, and some TY752s are completely pants :)

Internet rumour has it that the STi 3/4 type R has stronger 1st/2nd/3rd gears than other TY752s, including 3/4 STi boxes. I'd like to verify this but I've certainly seen people running power through these boxes that would instantly kill an other TY752s, so it at least seems plausible.

Ultimately the 6 speed gives you more strength, but there are other cars running more torque than you have through that gearbox. I'm watching them very closely to see what happens!

Internet rumours are always good like that, shame its not true.

Sprint Chief 27 March 2012 11:16 PM

You'll note I carefully stated my comment that there may be truth in it, there may not be, because I work with evidence rather than internet rumour. So at present I cannot say.

People who say things are definitely not true (based on no evidence) are just as bad as those who say things are true (based on no evidence). Both are worthless internet rumours.

From someone running circa 360bhp on a classic 5 speed gearbox, looking for 400bhp on a 20% methanol remap later in the year, and expect still to be running the same 5 speed gearbox :thumb:

Anger 27 March 2012 11:21 PM

V5 RA box 450bhp 411lbs/ft at SRR

11.8@ 118mph on the strip


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