Is double clutching necessary on a w58? is it a synchronized manual transmission?

 

You almost had me? You never had me - you never had your car... Granny shiftin' not double clutchin' like you should. You're lucky that hundred shot of NOS didn't blow the welds on the intake! You almost had me?

seriously though just push down the clutch pedal, change your gear, and release.
repeat as necessary.

 

any idea why the clutch requires so much resistance to press, it's almost close to ACT2600 pressure plate kind of force required to press on this pedal, for a lexus I expected near effortless.

 

 

2JZ engine... No ****...
You know what, this will decimate all after you put about 15 grand in it or more...
If we have to, overnight parts from Japan.

 

double clutching helps getting into reverse tho, yes?

 

lol just had to call out the reverse gear.. I am pretty sure the OP meant forward gears, but you could double clutch if you are locked out of reverse or you could just do what everyone else does and let the car roll a hair forward or back and it will go right in, no reason to pump that clutch unless you are on a completely flat surface and the trans is being stubborn, but generally it should go into reverse just fine. Its not an oldschool v dub its a 90's toyota box it is designed to be smooth.

 

Watch out for the "Danger to Manifold" warning light.

Also, if you press the clutch too hard your floor board might fall out.

 

Don't think you need to double clutch, just watch out when you race though, johnny tran probably has over 100 grand under the hood of his car. double clutchin or not hell probably still beat you.

 

Two year's in Lompoc........ill die before I go back

 

Double clutching is to allow the driver to match the engine rpm with the transmission so the gears will mesh when the shift is made. The synchroizer does that for you. Learning to properly double clutch so you don't strip the gears is an experience in itself. To shift gears, you clutch and pull the shift lever to neutral, rev the engine, clutch again and then slam the transmission into the lower gear (if matched up properly, it will slide in without a whisper) and release the clutch.

 

So in other words a smooth downshift transition? I'm guessing with all the comments above there is no need to double clutch.. lol. I was just curious what it is because I've seen some vids on youtube about people double clutching and I never really understood the purpose. Thanks.

 

lmao just seen this one , my stomach hurts now from laughing

 

Idk why your clutch pedal is so stiff, mine is very normal, clutch has plenty of meat on it and both cylinders work fine, hose in good condition too. Maybe you need to adjust something?

 

on an unsynchonized transmission, you have to do both double clutching and also rev match or you will be grinding those gears and internals. the double clutching helps line up the gears better in the trans as its not lined up or something just taking it out of one gear.

on most 1980+ cars they fixed that stuff, so you don't have to do either, but most everyone should and does learn to rev match sooner or later as it is all around better for the trans, your clutch especially, makes for smoother driving, and will let you put down the power faster since the clutch engages right away instead of waiting that split second for it to finish engaging. If you get good enough you will be able to downshift without jerking your passengers head forward, it should just be like the engine tone changes, without any jerk. Now if you are downshifting to take off, you can give it a little more rpm than a perfect rev match, but there is a balance too much and you will be spinning that clutch longer than needed/wanted.

Once you get really good at rev matching, you may or may not notice you can even shift into a gear without using the clutch, but its very difficult to do reliably without grinding and I would not recommend doing it as it wears the synchro's, but I have done it before (I know I don't always follow my own advice) without any grinding. hit the perfect rpm and it will glide right in, miss it by even a small amount and you will get bad sounds. Its an oldschool downshifting trick I was shown when I was younger and its just a hey that is sort of neat thing, it doesn't help you go faster or anything.
The first trick is to take it out of the current gear smoothly without using the clutch, and that is where I will stop for the sake of your transmission =)

nowadays even the auto transmissions rev match between gears. I think the first time I saw that was on the 370z or was it a late model 350, can't remember but it was an automatic Z.