i never tried downshifting from 5th gear to 3rd and i was wondering.... how fast you should be going in able to do this safely and what rpms should you be at?.

 

i was at about 50-60 mph and i downshifted to 3rd, you'll hit about 4800-5300 rpms, depending on how well your car is tunned you'll drop right in the power band

 

this cant be that good for the tranny can it?

 

I wouldn't see the need to do it past 65mph - it's just too jerky for that because the rpm's are too high.

I'll downshift to 3rd to pass on 2-lane roads. So I'd be at like 50-55 most time. Damn is that a powerful launch! Make sure your not tailgaiting when you step on the gas or you'll be eating the read end of the vehicle in front of you.

 

well if you rev match your engine properly then the downshift will not be jerky.

 

The Trannies in our Evo's are Built like tanks, its not bad for it, maybe the stock clutch, but who gives a **** about that anyways!!

Its a lot worse to drop your clutch at 5,000 rpms from a dead stop, so look at it that way

 

not to be a dick or sound dumb, but isn't that dbbl clutching???

 

Yeah, rev matching eases the transition and takes it easy on the tranny. Major disadvantage is that it takes much longer than downshifting directly. For example if someone is trying to pass you and they are going considerably faster.

 

no, each gear is optimized for certain rpms before you should shift. You just have to make sure you shift no more than maximum allowed for that gear. Look at the manual. It tells you what range of MPH you have between each gear.

 

bump, for my answer!

 

you sure??????

 

I do 5 to 3 pretty frequently- for example, say I am on the highway cruising in 5th and traffic slows down to 40 or so. At this point, I am now at about 2K rpms in 5th and if traffic speeds up, I will be in trouble. So I will just put it into neutral, blip the throttle, then shift into 3rd.

As pointed out earlier, the drivetrain could care less which gear you were in before as long as you match revs correctly before releasing the clutch. Problems occur when you release the clutch with too few (or too many) revs because the driveshaft and engine are spinning at different speeds.

 

Here is the difference..

Rev matching.. clutch in, downshift, blip peddle to approximate RPM for down shift, let clutch out and go.

Double Clutching.. clutch in, shift to neutral, clutch out, rev to approximate RPM for down shift, clutch in, select gear, clutch out and go.

Rev matching helps save your syncros by putting the engine in the correct RPM range and ready for the shift.

Double clutching is necessary on cars/trucks (mostly older) with no syncros; thus the extra work.

That's the short and sweet of it. Hope that helps!

 

7000 in 3rd with the stock tires is 83 MPH

 

Thanx buddy!