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how to know if clutch is holding power
Posted: Sat Oct 01, 2011 8:28 pm
by spaztikcamel
hello
I was wondering how do i know if i should upgrade my clutch?
I have turboed my car etc and am not sure if the clutch is slipping
I know the stock clutch (na6) is supposed to hold only around 150hp
sadly I have no idea how much power I do have
How would I tell whether I have power induced clutch slip?
would I smell it?
thanks for your time
Re: how to know if clutch is holding power
Posted: Sat Oct 01, 2011 8:33 pm
by NitroDann
Revs will accelerate faster than the engine does.
What turbo, what engine mods, what exhaust size, how much boost?
Dann
Re: how to know if clutch is holding power
Posted: Sat Oct 01, 2011 8:44 pm
by JBT
NitroDann wrote:Revs will accelerate faster than the engine does.

Re: how to know if clutch is holding power
Posted: Sat Oct 01, 2011 9:30 pm
by NitroDann
Sorry, make that
Revs will accelerate faster than the car does.
Dann
Re: how to know if clutch is holding power
Posted: Sat Oct 01, 2011 10:45 pm
by spaztikcamel
NitroDann wrote:Revs will accelerate faster than the engine does.
What turbo, what engine mods, what exhaust size, how much boost?
Dann
td04, cops, diypnp, ebc, 10psi, 2.5" exhaust etc
I understand the revs should go up faster than the car accelerates but is this very noticeable or sorta only slightly?
shattered if I am still under 150hp...
Re: how to know if clutch is holding power
Posted: Sat Oct 01, 2011 11:01 pm
by NitroDann
Post a screen shot of your timing map.
Dann
Re: how to know if clutch is holding power
Posted: Sat Oct 01, 2011 11:14 pm
by spaztikcamel
No because its probably embarassing as i have nfi what im doing when tuning and am still learning
srsly though if my timing map is completely stupid let me know
Re: how to know if clutch is holding power
Posted: Sat Oct 01, 2011 11:43 pm
by NitroDann
Nah it looks ok. Looks like youve maybe copied a few generic ones ive seen a few times am I right...?
but its fine, well.. most importantly, at full boost full revs your timing is about spot on so yes your well past 150whp unless you have a big issue somewhere. Its likely your clutch is slipping a little, and youre due for a new one.
happy ?

Dann
Re: how to know if clutch is holding power
Posted: Sun Oct 02, 2011 12:09 am
by spaztikcamel
Nah it looks ok. Looks like youve maybe copied a few generic ones ive seen a few times am I right...?
damn you are good. lol you knew you were right.
having a guess id say thats probs why I have not noticed power gains in the last couple of mods.
I honestly was starting to think you get that used to extra power you dont even notice increases all too much.
Re: how to know if clutch is holding power
Posted: Sun Oct 02, 2011 12:19 am
by NitroDann
Yeah Give me a FULL rundown of drivetrain mods, from the air filter to the exhaust tip. Im interested is all.
And yes definately a new clutch.
Dann
Re: how to know if clutch is holding power
Posted: Sun Oct 02, 2011 1:03 am
by spaztikcamel
ok sure
first is Td04 (i think 9b) the manifold is cast and f'd if i know who made it its got no brand on it its top mount and has an odd 3bolt flange
stock intake manifold
2.5" downpipe to 2.5" system - great highflow cat - magnaflow muffler.
I had a wrx tmic with 2" piping but recently changed this to a 27x7x2.5" IC with 2.5" piping
pod filter picking up strait from behind the radiator
stock clutch and sadly diff (lucky car came with crappy tyres)
stock brakes (dot 4.1 fluid)
diypnp- map sensor- 470cc rx7 - toyota cops- fuel tuning done pretty much entirely using autotune function - innovate mtxl-
vl tps- ebc.
pretty much all emissions gear stripped from engine bay
minor weight reduction
coilovers, shortshifter
thats about it that i can think of nothing special as im no mechanic just a computer nerd with an interest in mechanics
mods to come are ewg (have to get it welded into manifold and piped to downpipe) CLUTCH! lol, diff, coolant reroute and possibly bigger rad, sway bars and 6ul's with 275 hoosiers

Re: how to know if clutch is holding power
Posted: Sun Oct 02, 2011 1:07 am
by NitroDann
Why go to the effort of EWG? Especially with cutting and welding a cast manifold..?
Why not just go to a 2560 and a new manifold and enjoy the 240rwhp?
Dann
Re: how to know if clutch is holding power
Posted: Sun Oct 02, 2011 1:25 am
by spaztikcamel
the ewg is only going on if i get boost creep which seems to happen if i try for a little more power
but from what ive gathered from your post its my turbo thats holding me back??
I thought it was my tune
Re: how to know if clutch is holding power
Posted: Sun Oct 02, 2011 9:59 am
by NitroDann
wht afr are you running at full boost?
Dann
Re: how to know if clutch is holding power
Posted: Sun Oct 02, 2011 11:14 am
by spaztikcamel
almost 10:1 butive gotta go into town later I will take a log so you can have some exact numbers