Revvittupp

It is very easy on big trucks. As noted, most big trucks, the clutch is for first gear. I have done it on some cars, but hesitate to do so on my 8. The reasoning, is that, at least to me, the broader the RPM range, the harder it is. On a 3300 redline diesel, it is easy. On a Mazda 6 it is tougher, and an 8 is even tougher. The key is to get the motor and tranny spinning at the same speeds. When done CORRECTLY, it puts the least wear and tear on the drivetrain.


Similar question. I notice that when doing normal drivign type of shifts it is the smoothest to push the clutch in half way. How much excessive wear does this place on the clutch?

Uncivilizedracer

Only when you hear grinding and missing iswhen it starts to become a issue syncros are the main thing to be worried about as long as your timing your shifts right there is no extra wear.

Revvittupp

So if yoiu smoothly shift gear-to-gear with HALF a clutch pedal, it is fine, correct? I understand there will be now wear to the synchro's and gears if done smoothly, but is the clutch slipping the whole time?

w0rm

While I had thought about it before, I never tried it with my 8 until reading this post. I used to have an old 4speed volvo I never clutched on, but the 8's RPM range scared me.. and I didnt want to grind any gears.

Recently, I tried dropping it out of gear and found once the RPM range is right it will just fall out. About then the RPMs drop properly to slide it right into the next gear. I've done it for 2-3, 3-4, and 4-5 so far. Pretty easy and there's zero grinding or synchro spinup. I was really suprised how cleanly the shifts happen without the clutch.

8 Maniac

iTrader: (1)

so you had no usable clutch? just confirming cause I'm wondering what you would do to get it started... I know once you get going in first that it shouldnt be a problem... but how to start? lol

Jethro Tull

iTrader: (6)

Yep, that's pretty much it. I'd have to start with the engine off, tranny in first. I'd get going on the starter motor and then the clutchless shifting.

I always had to make sure that I never stopped on an uphill grade, or had to shift on an uphill grade. You can only shift clutchless in a no-load situation and the starter/battery wasn't strong enough to get you rolling uphill.

Starting downhill was a breeze!

After the clutch cable broke twice (it frayed at the feed-through on the firewall), I bought myself a BN 1980 RX-7. My brother started driving the Arrow.

c41250n

iTrader: (5)

just rpm match it!

TrochoidMagic

i only did it to an test drive car rx8, but only take it out of gear off throttle and maybe only upshift in light traffic w/o clutch. but chances are, i'm just gonna stop clutchless completely. my honda seem to hold up well, but there is still chance that the synchros don't line up timely if using in higher rpms. i will not take that chance. i'd rather clutch in 1-4 synchro gears and clutchless on 5-6.

i don't know if it was because i was driving customer's cars, but i find myself very confident clutchless shifting in S2000's.

anyway...if anyone's to experiment, i'd keep it under 4k to be safe.

Uncivilizedracer

Always under low RPM do i do it at higher revs and high speeds its just too hard to mach up the shifts and you have to be real quick about it too much risk