Gear drop at high speeds

[KingKoopaBoy]

Is it bad to drop to a low gear going at high speeds to hit vtec and go fast? For example: 6th gear 55-60mph to 3rd gear at that point rpms would be around 6 I think or 5th gear 40-45mph to 2nd gear. With rev matching. Just wondering thanks in advance.

[Grey2.0SI]

if you rev match and all that then there shouldnt be a problem. just dont downshift too far and bounce the rev limiter.. supposidly it logs that shiet

[blacklabel7470]

Rev matching yes.

Don't go oo i want to hit vtec in 3rd while going 65 and dump the clutch into third.

Or worse don't drop into a gear if you don't know where you will be at in RPM's. Can result in us seeing a thread, "i think i blew my motor"

[KingKoopaBoy]

So as long as you dont dump the clutch or redline it while dropping gears is cool?

[blacklabel7470]

Originally Posted by KingKoopaBoy

So as long as you dont dump the clutch or redline it while dropping gears is cool?

main thing about dropping if you aren't sure is over revving the motor. If you say drop it into second going 70 its not giong to just stock at the rev limiter. Its going to go past it and can cause damage.

[ericz0r]

good thing you posted this.. a long time ago i was cruising at:
65 km/h in gear 6 at i believe 1900 rpm
and he wanted to hear vtec in my car so:
i downshifted to gear 2, brought it instantly up to about 6000-6500 rpm and vroomMMEdd away.. perfect rev match, and he said i was ******* up my car by dropping it 4 gears

i told him that he's wrong.. so some one clarify for me.. so, was i wrong in saying that i didnt damage my engine in any way and thats the proper way to get instant vtec?

its not like i downshifted into redline, or its not like i didnt rev match or my car jerked or anything.. nice, smooth, vtec

[GeezerSi]

Originally Posted by Grey2.0SI

if you rev match and all that then there shouldnt be a problem. just dont downshift too far and bounce the rev limiter.. supposidly it logs that shiet

There is no rev limiter on a downshift. Go too high, and you will blow your motor.

[daludidi]

Originally Posted by GeezerSi

There is no rev limiter on a downshift. Go too high, and you will blow your motor.

aka the money shift!

[PeterC.]

Originally Posted by GeezerSi

There is no rev limiter on a downshift. Go too high, and you will blow your motor.

How is too high? Hondata reflash takes the redline up to 8600?

[airportguy770]

Originally Posted by PeterC.

How is too high? Hondata reflash takes the redline up to 8600?

no one has an answer for that one, just stay below that so you don't find out.

[rmfa]

Originally Posted by KingKoopaBoy

Is it bad to drop to a low gear going at high speeds to hit vtec and go fast? For example: 6th gear 55-60mph to 3rd gear at that point rpms would be around 6 I think or 5th gear 40-45mph to 2nd gear. With rev matching. Just wondering thanks in advance.

Are you new to a stick?

[GeezerSi]

Originally Posted by PeterC.

How is too high? Hondata reflash takes the redline up to 8600?

Originally Posted by airportguy770

no one has an answer for that one, just stay below that so you don't find out.

I've heard that all bets are off at 10K, but I would be concerned once the engine starts to go above 9K.

[7002iSciviC]

i do 6th then drop to 3rd when going 65mph and it just fine but dont ever ever down shift to a lower gear other than 3rd otherwise 65mph into 2nd gear = NO SO GOOD. if your going over 75 dont go down to 3rd !! 65 -70 is "MY" limit down shifting into 3rd.

[fa5_4lyfe]

listen to the man above me hes got in nicly said

[galaxygrey13]

I only downshift to 4th gear. with the reflash that is all u need.

[habitat]

Originally Posted by GeezerSi

There is no rev limiter on a downshift. Go too high, and you will blow your motor.

did not know that... so it will go past 8300rpm as well?

[GeezerSi]

Originally Posted by habitat

did not know that... so it will go past 8300rpm as well?

If you downshift low enough at a high enough speed, the engine rpm will go as high as it can until something fails.

[blazelate]

Originally Posted by habitat

did not know that... so it will go past 8300rpm as well?

yeah the revv limiter is only a fuel cutoff, wheras the car cant slow the wheels down on a down shift, itll go as high as it wants and possibly cause damage.

i had a bad experience with dropping gears, once. not doing that again id rather have the rpms fall too low than to high now.

[habitat]

Originally Posted by GeezerSi

If you downshift low enough at a high enough speed, the engine rpm will go as high as it can until something fails.

Ohhh I see what you're saying, no rev limiter if you force the car in a lower gear. But what if I don't force the car into any gear. Rather only disengage the clutch, would I be able to blip (with throttle) past the 8300rpm fuel cutoff?

[killsw1tch]

Don't over rev your engine. It keeps a log in the computer and it will void your warranty.

Also, it's not good to go from 6th to 3rd because the synchro has to do a lot more work to make such a jump. Go through the gears to get to third.

The way to do the least damage to your synchros while changing quickly from 6th to 3rd is to DOUBLE-CLUTCH as well as rev-match as usual. This will match the spindle speeds and put no strain whatsoever on your synchros.