Clutch Options 6spd V8 STI

[Niran]

Unfortunately my plans to get my version 8 tuned may be halted by a weak clutch its engaging right up the top and I feel like it slips on high gears when boost comes on, but i'm not sure). Driven it up a hill etc on 3rd at low rpm and it grips solid, just feels that theres heaps of boost coming on but the car isn't really matching that in road speed on 3rd/4th/5th/6th, seems fine on 1st/2nd. This feeling is probably further exacerbated by a couple launches I've tried that ended up with the clutch way too hot and slipping into second pretty bad - Stunk real bad too, but started to bite again when it cooled down.

Don't know if I should risk forking $1300 for a dyno tune and the clutch giving up on the day.

The next dilemma is which clutch to get? I'm definitely keeping this car for ages and will expect about 230kw atw (hoping with my mods so far), and maybe 450wtq after dyno? Whats my best option for clutch + flywheel?

Exedy HD, ACT etc. Read up a fair bit but dont have anything concrete to stand on in regards to durability, torque rating, and ability to handle some abuse. The last thing I want is to get it changed then need to replace it in 10k.

Oh and who in Auckland would you recommend to get the job done? Been going to subtech for all my work so far.

Any feedback or past experiences would be appreciated

[loner]

You will know when your clutch is slipping... it's not a subtle feelings type deal.

Your expecting 450kw after a tune? Do you mean HP?

[Niran]

 loner said:

You will know when your clutch is slipping... it's not a subtle feelings type deal.

Your expecting 450kw after a tune? Do you mean HP?

Expecting 230kw atw and 450nm torque atw after tune aye

[boon]

My stock V7 clutch shat the bed after not a long time with 231wkw. And I didn't exactly thrash it.

Talk to pro-wholesale in Tauranga, get the Exedy HD with lightweight flywheel, should run you about a grand?

But as loner said, it's not subtle, it a. stinks and b. is quite obvious that your RPM doesn't match your usual kph.

[Niran]

 boon said:

My stock V7 clutch shat the bed after not a long time with 231wkw. And I didn't exactly thrash it.

Talk to pro-wholesale in Tauranga, get the Exedy HD with lightweight flywheel, should run you about a grand?

But as loner said, it's not subtle, it a. stinks and b. is quite obvious that your RPM doesn't match your usual kph.

Cheers bro. Feck me, $1000 for the HD exedy, and $640 for the flywheel . Thats like over $2k with installation..

[Guest]

Do not for the love of God go to autoclutch in Auckland

I would contact drews automotive, he sponsored flat nats and I talked to the guy, he knows his stuff and is worth contacting first. He specialises in clutches etc.

[Scoobydoo]

Also +1 for Drews Automotive.

You'll be looking for a combo like this: http://www.trademe.co.nz/motors/car-parts-accessories/subaru/clutches/auction-1052989022.htm

Or he may offer you other options of an even further upgraded clutch cover, organic or ceramic clutch etc etc.

I got that exact combo for mine, except it was for a 2.5L instead of 2.0L

[Guest]

This drews thing bugs me. His clutches dont seem to be branded which is a bit of a red card for me. Im running one and have to say its the ****iest puk clutch ive ever had.

[loner]

hmm, $930 for a flywheel, clutch disk and pressure plate? That's a red card.

[lachlan]

Theres 2 big fkn dails in front of the steering wheel that tell you if the clutch is slipping

[Kiwi_Fozze]

My v7 sti was running a brand new genuine sti clutch. Iirc it was $730 for the full kit, exceedy branded high clamp number.

Mine lasted God knows how many launches and over 40k of daily thrashing, with over 220kw at the wheels. still going hard when I sold it. Should only need to skim the flywheel

[Niran]

 evowrx said:

This drews thing bugs me. His clutches dont seem to be branded which is a bit of a red card for me. Im running one and have to say its the ****iest puk clutch ive ever had.

I was thinking of going with them for a new clutch. Would you advise against it based on your experience with you current clutch?

[Niran]

 kwi_fozze said:

My v7 sti was running a brand new genuine sti clutch. Iirc it was $730 for the full kit, exceedy branded high clamp number.

Mine lasted God knows how many launches and over 40k of daily thrashing, with over 220kw at the wheels. still going hard when I sold it. Should only need to skim the flywheel

Cheers man, I have read this a lot too. So to confirm you got a stock exedy clutch, with uprated clamp pressure? Re Flywheel - I guess if im going to have to spend the money to get the clutch out, i may as well pay for a lightened flywheel too? Unless the gains are not noticeable, therefore waste of money?

Edited March 21, 2016 by Niran
changed wording

[Marky]

Or

Or do it yourself and just chuck in a new disk

Cost = sweet F-A

Time = a weekend

Worth asking BNT directly what price they'll give, half the aftermarket parts places just buy in from there and onsell anyway

[boon]

 Marky said:

Or

Or do it yourself and just chuck in a new disk

Cost = sweet F-A

Time = a weekend

Worth asking BNT directly what price they'll give, half the aftermarket parts places just buy in from there and onsell anyway

I will throw it in there that the 6 speed weighs like double what the 5 does (at least that's what it feels like), it's a massive gearbox by comparison. Much less of a garage floor/jackstands job.

Just supporting the bellhousing enough to get it on the back of the motor is an engine crane through the top kinda thing.

[Niran]

Yeah definitely dont have the skills or tools for the job. The trickiest thing i've done is fuel pump, and that took me half a day haha.

But yeah, wish i could! Friggin clutch change is gonna break the bank pretty hard

[Guest]

I've done it a lot and the 6 speed is bloody heavy, would be hard work on jack stands, it's not that easy with professional equipment and a helper.

[loner]

Could just pull the engine... might be more fiddly... but less back breaking and easier to line back up. Also don't have to touch the suspension or pull the axles... undo the driveshaft... etc

Edited March 21, 2016 by loner

[Guest]

I dont touch suspension when dropping 5sp box.

[loner]

 evowrx said:

I dont touch suspension when dropping 5sp box.

do you mean just pulling the box back a bit and not removing it?

Edited March 21, 2016 by loner

[Guest]

Bit of a jiggle fit by yourself but saves removing wheels or getting an alignment. I do the lot with it on a jack and works mint long as when you lift it back off studs it doesnt slip off and nail you.

[Dairusire]

I just put in a Drew's automotive into my Type RA, as I'm now running a v10 STi 6 speed. I'll let you know how it is, but the pricing is fuarking sharp man. That is, (ironically) after I sort out my bloody clutch engagement issues... Nothing to do with the clutch but more so the master Cyl or Slave lol

Edited March 21, 2016 by Dairusire

[Guest]

Price can be a good judge of quality bit like the d1/f1 racing clutches.

I ran an evo exedy 5 puk a while back and it was awesome to use compared to the drews one. This does the job it just feels like a solid plate rather than sprung like it is. Not much cop as a daily.

[Niran]

 lachlan said:

Theres 2 big fkn dails in front of the steering wheel that tell you if the clutch is slipping

Yeah well its pretty obvious when your clutch is completely worn and it slips. The whole point of the post was that i'm not sure how much life it has in it, and if it will be ok to tune given its current condition:

1. Engages at the top with very little range of control.

2. Seems to bite and have good engagement through 1st and 2nd gears

3. 3rd/4th/5th/6th is where i cant tell if the clutch is slipping slightly. The boost spikes to 1.5bar + and the car doesn't really match that in road speed, if that makes any sense.

4. Drove it up a slight hill on 5th at low rpm and it sticks, no slipping.

So yeah, thats why im a bit confused!

Edited March 22, 2016 by Niran
Added another point

[Dairusire]

 Niran said:

Yeah well its pretty obvious when your clutch is completely worn and it slips. The whole point of the post was that i'm not sure how much life it has in it, and if it will be ok to tune given its current condition:

1. Engages at the top with very little range of control.

2. Seems to bite and have good engagement through 1st and 2nd gears

3. 3rd/4th/5th/6th is where i cant tell if the clutch is slipping slightly. The boost spikes to 1.5bar + and the car doesn't really match that in road speed, if that makes any sense.

4. Drove it up a slight hill on 5th at low rpm and it sticks, no slipping.

So yeah, thats why im a bit confused!

To be frank with you, if you're not sure on it, and you can't remember when it was replaced anyway, just go ahead and replace it. If it's doing it now, it'll definitely do it with a power increase.

I've managed to get my clutch BS mostly sorted in my car and the clutch is actually really quite nice from Drews, so I'll rate it as so.

Price: 10/10 - can't beat it really cost me $799 incl shipping for Clutch kit with uprated pressure plate and billet light weight flywheel.

Quality: so far so good, but early days, will give 8/10