5pd FAQ
06-07-2004, 11:17 AM
#1
Guest
Posts: n/a
5pd FAQ
My goal is to almost double the stock HP (02 wrx) for street purposes. Furthermore, it is my desires not have my transmission break after reaching my desired power. Moreover, I don’t want to have any TM problems for at least another 2 years. I drive very modestly; in fact I rarely drive fast and I always granny shift the 1-2. I want the power because occasionally I’ll take it to the track (once every full moon) and its fun once in a while. Nonetheless, it is my daily driver. I do know that even with dog gears, the flex issue still exists and the TM is still susceptible to breaking.
So, this is my question. Given my driving habits, can I reach @ 400 HP on my stock TM without it breaking? If so, what parts do you recommend beefing up the TM in any way. The 6pd TM is just too expensive when all said and done. (Axles, differentials (electronic rear diff), drive shaft, ect…)
Should I just get an STI???
So, this is my question. Given my driving habits, can I reach @ 400 HP on my stock TM without it breaking? If so, what parts do you recommend beefing up the TM in any way. The 6pd TM is just too expensive when all said and done. (Axles, differentials (electronic rear diff), drive shaft, ect…)
Should I just get an STI???
06-07-2004, 11:49 AM
#2
Registered User
iTrader: (1)
Join Date: Jul 2003
Location: Omaha, NE
Posts: 281
Car Info: WRB 2003 WRX
I don't think the stock EJ20 engine with stock internals can safetly reach 400HP. The most you can probably get out is 240 to 250HP at the engine with stock internals. You could try the STi RA gearset, as an upgrade for your transmission, they are being advertised to hold 275 to 300 WHP. The case flex issue seems to be put to rest with the fact that there are plenty of WRXs with the upgraded RA geatset that don't have any issues. You might just want to buy the STi but that isn't cheap either and a Vishnu stage 1 STi only makes 280WHP (assuming a 25% drivetrain loss thats less than 400HP at the engine) ..... I've had the same dilemma as you. That's why I'm buying an EVO MR as my next car (puts flame suit on)
06-07-2004, 02:54 PM
#3
Guest
Posts: n/a
Thank you for your input. I do have internals and all that fun stuff; so I'm not worried about my engine not being able to support the power. I'm just scared that the TM is just...not good, for lack of a better term. Furthermore, "just say no to Evo." haha oh also, people say aftermarket gears i.e. gimmie gears or “doggears” are way too inconvenient for street. They are loud or something and simply not worth it.
Last edited by El Guapo; 06-07-2004 at 03:00 PM.
06-08-2004, 08:03 AM
#5
Registered User
iTrader: (1)
Join Date: Jul 2003
Location: Omaha, NE
Posts: 281
Car Info: WRB 2003 WRX
Then my friend you might want to look into the KAAZ close ratio gearset. Mind you these are by no means cheap, they cost more than twice as much as the STi RA gearset, but they are rated to hold up to 300+WHP easy. I would assume they are easily capable of holding 400WHP or so I have heard. Doggears are not worth it for daily driving, not only are they loud but you have to constantly rebuild them every 10K miles (ouch) and on top of that they are not cheap. I think it has to do with the fact that they have no synchros....
(kidding)
06-14-2004, 11:09 AM
#10
Guest
Posts: n/a
"With increasing demand for high HP packages the need for a strong transmission has never been greater. TurboXS has teamed up with PPG to design a gear set for high HP WRXs utilizing optimized gear ratios to get the most from your engine! While primarily utilizing racing transmission technology we made sure this upgrade is smooth shifting and quiet, allowing you to drive it during the week and race it on the weekends."
Love Turbo XS
umm... is this true? Are they really quite and easy to drive?
Love Turbo XS
umm... is this true? Are they really quite and easy to drive?
05-26-2005, 09:17 AM
#11
Registered User
Join Date: Feb 2003
Location: Pa......N. of Phily "Quakertown"
Posts: 68
Car Info: 02-04R-STi PPG's FP-Green 391whp
Any word on this trans's reality now??
Originally Posted by El Guapo
"With increasing demand for high HP packages the need for a strong transmission has never been greater. TurboXS has teamed up with PPG to design a gear set for high HP WRXs utilizing optimized gear ratios to get the most from your engine! While primarily utilizing racing transmission technology we made sure this upgrade is smooth shifting and quiet, allowing you to drive it during the week and race it on the weekends."
Love Turbo XS
umm... is this true? Are they really quite and easy to drive?
Love Turbo XS
umm... is this true? Are they really quite and easy to drive?
Im looking into, In all reality Im goin to have to replace my stock 02 RS MT when I complet my 04 STi motor swap - FMIC and larger turbo...ect much more HP than stock STi. I Dont want a 6-MT w/or w/out DCCD too much $ invested already.
What I would like is a 5-MT with LSD in frount and rear and a standard 35/65 LSD in the mid. Im unsrue on gearing yet...either 1-2 or 1-2-3 dog w/RA 4-5 ( BIG $$ ) a RA beefed up somehow or a totally new Syncroed gear set ( IE....like in the quote )
I have many months befor I swap this winter and am doin exstencive research on trans stuff. Is what I want a problem?...Is there a better option. Any help hints or opinions would be great!! I live in Allentowm PA so I am near some great shops Rallispec-NJ Gearboxtech-MD
05-26-2005, 05:26 PM
#12
Originally Posted by DaWorstPlaya
I don't think the stock EJ20 engine with stock internals can safetly reach 400HP. The most you can probably get out is 240 to 250HP at the engine with stock internals.
05-27-2005, 08:26 PM
#13
Registered User
Join Date: Feb 2003
Location: Glen Rock, PA
Posts: 527
Car Info: 95 Impreza coup, green, 5speed 1.8l awd
dogs and straight cut gears are two very different things
dogs are what replace the syncros and what makes the shifting difficult and also the wear as well
straight cut gears are just that straight cut not helical but what that means is that in will be loud like a supercharger whined but coming from your trany
the kaaz set is straight cut 1-3 but syncroed in all gears very streetable in my mind but thats me
dogs are what replace the syncros and what makes the shifting difficult and also the wear as well
straight cut gears are just that straight cut not helical but what that means is that in will be loud like a supercharger whined but coming from your trany
the kaaz set is straight cut 1-3 but syncroed in all gears very streetable in my mind but thats me
Thread
Thread Starter
Forum
Replies
Last Post