Toyspeed.org.nz Message Board

by **barryogen** » Thu Oct 02, 2008 8:55 am

I've always started my car with clutch pedal pressed to the floor, but recently I read something that said it may make it wear faster, or damage it, or something, general gist was it was a bad idea.

I have no clue about it, so, in or out?

by **xsspeed** » Thu Oct 02, 2008 9:14 am

Doesn't depend on the car? I always start with it out in N, unless its some older car that won't start without it in

by **Rob_GTZ** » Thu Oct 02, 2008 9:18 am

I've always started cars with clutch in & car in neutral. Can't be too bad for them, the manual Toyota Vitz & Echo models will not allow you to start the car without the clutch engaged

Click here to see "My Black Hole" · by **Stealer Of Souls** » Thu Oct 02, 2008 9:29 am

What was their reasoning for wear? I guess if your clutch wasn't adjusted properly it might increase wear by a significant amount... But I would suspect that people would spend far more time at the lights with the clutch depressed...

350Z's also need the clutch depressed to start.

Personally I always start in neutral with clutch depressed. Mostly just in case of that one in a million bad luck situation.

by **KwS** » Thu Oct 02, 2008 9:51 am

ive kept hearing something about if you start with the clutch in you can get crankwalk or crank float or something. dunno how true it is.... but when i thought about it, it sort of made some sense, but not a whole lot.

i still start with foot off clutch, but always check its in neutral.

Py7h0n's big cleanout · by **Py7h0n** » Thu Oct 02, 2008 10:20 am

Holding the clutch pedal while starting is VERY bad.

Your thin tiny little Thrust washers which stop the crank from moving forwards and backwards have no oil pressure on them when cold starting.

So when you have pressure on the thrust washers by holding your clutch pedal while starting you are really stressing these 'bearings'. This eventually causes what is called crank walk - When these bearings give out and your crank is not supported. Bin block, Bin crank.

In the US it is a VERY common engine problem because they have switches on their clutches so that the car cannot be started without the pedal pushed in.

Py7h0n's big cleanout · by **Py7h0n** » Thu Oct 02, 2008 10:21 am

Oh and the stronger the pressure plate - The worse the damage.

Couple of pics from the US.

by **KwS** » Thu Oct 02, 2008 10:33 am

huh... so i wasnt talking out my arse.... :lol:

PICS UPDATED DAILY · by **method** » Thu Oct 02, 2008 11:57 am

Ive heard the same thing too.

With standard cars it should be OK

But if you have heavy pressure plate to not do it.

by **barryogen** » Thu Oct 02, 2008 11:59 am

previous people wrote:tiny little Thrust washers ... no oil pressure ... cold starting ... stronger the pressure plate the worse

yeah, that was what it was I was reading... really must pay more attention and give a bit more info with my questions.

There goes my morning start procedure I've used for the last 13 years. sit, check in neutral, clutch, start.

OMG so shiny! · by **Dell'Orto** » Thu Oct 02, 2008 12:00 pm

Why would you put the clutch in if you're in neutral?

by **BigDon** » Thu Oct 02, 2008 12:19 pm

My Evo 9 has to have the clutch in to start dont know if thats factory or an ad on with the alarm. Hope it lasts with a heavy duty clutch.

by **l1ttle_d3vil** » Thu Oct 02, 2008 12:49 pm

assuming the engine is in good condition to begin with, how long would it last before everything turns to crap? obviously it would vary but 1 year or more like 10?

by **Warren** » Thu Oct 02, 2008 12:52 pm

Can't start my car without holding the clutch in

by **CAMB01** » Thu Oct 02, 2008 1:37 pm

4G63 turbo engines are VERY VERY common for thrust failure and crank walk.
Mainly due to the later model evos having pull clutches, and starting with foot on clutch.
Seen four evo 4 engines at work with the same problem, bin the crank and the block. Once it chews through the bearings it eats into the block

by **xsspeed** » Thu Oct 02, 2008 1:50 pm

So for these cars that need the clutch in to start.
If it is a bad thing, why do they have it? (is it a safety thing incase the gbox is in gear?)

How does the mechanism work? (small "push to make" switch or something?)
Assuming that would removing the switch and rewiring allow you to start with clutch out in N?

by **CAMB01** » Thu Oct 02, 2008 1:52 pm

Is a micro switch on the clutch pedal, similar how you would have a switch for a launch controller.

by **Nuty|Mike** » Thu Oct 02, 2008 5:20 pm

xsspeed wrote:So for these cars that need the clutch in to start.
If it is a bad thing, why do they have it? (is it a safety thing incase the gbox is in gear?)

Mine wont start wthout clutch in either Surely Mr Toyota wouldnt make it that way if it was gonna damage shit in the future.

by **Jdawg** » Thu Oct 02, 2008 5:25 pm

Check to see if your fancy race/road warrior has preoiling, if it does you don't need to worry, or maybe install a pre oil system, they are good thing.

by **AE82 FXGT** » Thu Oct 02, 2008 5:29 pm

CAMB01 wrote:4G63 turbo engines are VERY VERY common for thrust failure and crank walk.
Mainly due to the later model evos having pull clutches, and starting with foot on clutch.
Seen four evo 4 engines at work with the same problem, bin the crank and the block. Once it chews through the bearings it eats into the block

Evo 4's are the worst for that aswell.

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while starting, Clutch in or out?

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