I searched and searched.... could not find a straight answer.

I have an 08 manual tc

Question: When boosted is there a whp to stay below on the stock tranny/clutch?

For instance I came from the subaru community and EXACTLY 300whp on a wrx (not sti) was the break point where you should upgrade.

Is there any known hp/tq figures to where the clutch/tranny goes bye bye?

Lastly, with ZPI out of the question is there any kit that doesnt require tranny upgrades?

TIA

 

230-240 whp is about the stressing point for the clutch. Tranny will pretty much handle what you throw at it before needing to do anything to it. The synchros can go out, but thats if you are like me, and constantly thrash on it all the time.


No kit for MT's require any sort of tranny upgrade. ZPI just was offering valve body upgrades for the Auto transmission. You don't have an auto, so don't worry about that.

 

Okay so 230-240. With the trd s/c you can get right below 230 with all supported mods and upping the boost via new pulley.

With a turbo kit minus the exception of the zpi stage 0.... every kit out there baselines over this number correct?

I have been reading a lot on stage 1 kits (dezod, turbotoyotas, treadstone, etc.) and they for the most part claim up to 300hp crank which would amount to a lot more than 230 at the wheels.

Dezod I think put down 244whp on the stage 1 so is dezod really my only option? Do turbonetics, turbotoyotas, and treadstone kits really put down that much more?

Sorry im getting off topic now... thanks for those figures though.

 

Rancho Cucamonga? Nice. I'm in Rialto and go do church in Rancho. I just got my Dezod S1 kit in and will be installing in the next week or 2. If you wanna check it out let me know.

 

No, not correct. 230-240whp perhaps 250whp is what they all come with out of the box pretty much, except the Stage 0 (being 230whp). But even with the Stage 0, if you race a lot, the clutch will start slipping. With the TRD S/C'er and all supporting mods to make it to 230-240whp, can get the stocker to start slipping. You can choose ANY kit out there right now, and just take it easy until you get more funds to change out the clutch.

If you are Going F/I Period, plan on upgrading the clutch. Don't pick your turbo kit based on the limitations of the stock clutch.

 

prpnum - you have a pm!

rhythm - Thanks again. I actually am not too into dragging and never even took my wrx to the 1/4 mile. Im not the kind of person who launches their car 4 times a day. I just enjoy having a powerful FUN daily driver.

With that said I will most likely be going with the dezod stage 1 maybe treadstone. If the trd s/c is marked down to 2800 for the 2008 model I may even go with that.

I am obviously looking for something where I can wear out my stock clutch before upgrading and 240whp it plenty for me to fall in love with this car, so it looks like I have all the info I need.

Actually...... 1 more question on my 08... do i need to wait for new kits to come out or can i buy any tc kit since the powertrain hasnt changed. IF i do need a 2008 specific kit, can you point me in the direction of one.

Thanks

 

I would agree somewhat with rythmsmoke in regards to the clutch limits. My car blew the clutch on the 244whp dyno pulls.

We also have some members running our base boost level, and with a good tune they made over 300WHP (8.7psi wastegate spring). Your care should do the same if you have a good tune, good gas, and our turbo exhaust our any company's true turbo exhaust.

 

I have a stage 0, stock clutch..lotsa slippin

it was fine for months though, and im in boost quite often

 

Out of clutchmaster - the best clutch for any FI (s/c or turbo) is the stage 3 .... simple as that. It feels like stock in effort and it grabs inches from the ground ...I like it and I dont see how anybody wouldnt. I should get paid for that plug. ha.

 

^^+1. If you are going to eventually upgrade your clutch (which at some point in time you will), don't go any less than a Stage 3 or Stage 3 equivalent.

 

300WHP with a base map, S1 kit, and turbo exhaust? So, if I had 3" catback, 8.7 PSI, 91 octane gas, I can get 300WHP

 

You won't be 300 exactly. Perhaps a little shy of that mark but you will be in the ball park. If you break 280whp, that's enough merit/room to claim you have 300whp (at least imo).

 

hp numbers arent all that important in the great scheme of things. your cars power numbers will vary from dyno to dyno. for instance. my tuner roger at japtrix has an evo. on his awd mustang dyno it makes just over 420 at the wheels. he made a pass on his friends dynojet in miami. without changing anything on the car it made over 500 at the wheels. since we all use different dynos, its useless to try and compare our cars by "how much whp they make". try not to shoot for a whp mark. insted, go off what the car puts dow at the track.

 

Yea, I know what you mean Brett, the place I will dyno it at is a DynoJet. It would be nice to get 300WHP.

 

just so people know - at the start of this post we were talking about whp ....the stock clutch can handle around 255-275whp as a daily driver. Now we kind of went off into bhp instead of whp

 

When I mention 230-240whp, I'm talking about for people who actually RACE their car. If you just drive your car around like grandmother (i.e. your turbo is just a large paper weight), well hell man, you could probably get away with having 400whp on a stock clutch, if you never go into boost...LOL.

 

LOL I do get into boost just maybe 2nd and 3rd gear while maybe getting on a fwy onramp. Or when some weenie tries to mess with me on the fwy. But I NEVER launch! If i do race is from a 15mph roll with a buddy or something.

So seems to be with my style of driving, I should be okay with w/e figures I end up with. Than eventually when it goes... your saying to go straight to stage 3?? I was actually looking at a stage 2 that didnt seem bad at all.

LASTLY, no one answered!!!!! MY 2008 tc ... do I have to wait for new kits to release for the 08?

 

From what I have researched you can use the 07 kits, just not the 05-06 kits.

 

clutches are rated at the amount of tq they can handle...not hp newbs
im j/k, im sure most of you knew that, I just figured id point it out though cause I keep seeing everyone throw out whp numbers and not tq

 

tc torque is similar to the hp (meaning they are very close in the tc) - but very much so ...its trq that kills the clutch. I was driving on the stock clutch with around 230whp (before trd took my pulley) and i surely had nooooo slip at all. So we know for a fact the torque is above the 250trq mark