Misdownshifted from 3rd to 2nd and over the redline

[Ultramaroon]

Originally Posted by nikitopo

Or not so much for race cars

Beats a coke habit.

[krayzie]

Originally Posted by nikitopo

I haven't figured out yet if this guy did it on purpose or by mistake. I was reading somewhere that he was trying that day to get used to the right-hand drive position:



On the other side, it is a bit bizarre to miss shift by accident and manage to make a lap record.

Well this JDM model has an 8000rpm redline unlike the export model.

[krayzie]

BTW I've watched enough Best Motoring on VHS where Gansan always overrevs his downshifts well into the red zone when driving flat out on Honda's Takasu test track.

Then again it was always a factory press car / prototype.

OP don't worry my friend money shifted his RSX-S from 5th to 2nd and hit 9000rpm one time while trying to chase an S2K onto the highway ramp. Car still runs like a champ over 10 years later.

These days I tend mis-downshift from 4th to 5th instead of 3rd when driving a little hard.

[nikitopo]

Originally Posted by krayzie

Well this JDM model has an 8000rpm redline unlike the export model.

Are you sure? Max output is @6400 RPM. I would expect redline to be at 7000 RPM.

Originally Posted by krayzie

BTW I've watched enough Best Motoring on VHS where Gansan always overrevs his downshifts well into the red zone when driving flat out on Honda's Takasu test track.

Sometimes we are over-sensitive after experience with American or European cars. I was watching lately a German guy reviewing the STI and he was saying ... "This is a real engine, you can overrev well into the red zone. Don't do this with a German car!"

[strat61caster]

Originally Posted by Ultramaroon

Ah, you're fine. Even Shiv's Open Flash canned tunes replace factory rev limit at 7400 with a soft cut at around 7800-ish. I don't remember exact numbers but it's a significant increase.

61 mph in second gear, don't know what rpm that is but I'm sure you can plug it into a calculator and work it out for me, it's past my bedtime.

Originally Posted by krayzie

OP don't worry my friend money shifted his RSX-S from 5th to 2nd and hit 9000rpm one time while trying to chase an S2K onto the highway ramp. Car still runs like a champ over 10 years later.

While the FA20 is proving to be pretty stout, it ain't no 80's-90's Honda engineering.

[krayzie]

Originally Posted by nikitopo

Are you sure? Max output is @6400 RPM. I would expect redline to be at 7000 RPM.

Something like this with the EJ20

[krayzie]

Originally Posted by strat61caster

While the FA20 is proving to be pretty stout, it ain't no 80's-90's Honda engineering.

You are right those Honda engines can rev half way into the red zone while the FA20 chokes right at the redline.

[skkk]

Originally Posted by krayzie

You are right those Honda engines can rev half way into the red zone while the FA20 chokes right at the redline.

So like FA20 is so easy to get blown?

[strat61caster]

Originally Posted by krayzie

You are right those Honda engines can rev half way into the red zone while the FA20 chokes right at the redline.

It chokes about three hundred rpm before the redline, after that it drops off. The hard rev limiter is deceiving, like mentioned earlier in this thread many aftermarket tunes raise the rev limiter a bit and it feels much better to sail up to that 7.4k mark without fear of hitting the wall.

[Tcoat]

Originally Posted by skkk

So like FA20 is so easy to get blown?

No. It is just that they are an interference type engine. This means the when the valves are open they are extended into the cylinder where the piston travels. Not an issue unless your timing goes off (badly) or the valve doesn't retract fast enough when the piston comes back up (well sideways in this case). During a SEVERE over rev the springs that return the valves may be slower than the cylinder speed so they can hit each other and cause all sorts of damage. There are other things that can happen as well but this is what raises the risk with the boxer.
As said many times a small over rev is not likely to cause a problem but you bring it up too far too fast and things can go bad.

[Ultramaroon]

Originally Posted by strat61caster

61 mph in second gear, don't know what rpm that is but I'm sure you can plug it into a calculator and work it out for me, it's past my bedtime.

I suck at math.

[strat61caster]

Originally Posted by Ultramaroon

I suck at math.

Ugh, fine. As a fellow engineer I will counter you by doing no math either and instead looking it up.
7,600 per Shiv.
http://www.ft86club.com/forums/showp...79&postcount=3

[Ultramaroon]

Originally Posted by strat61caster

Ugh, fine. As a fellow engineer I will counter you by doing no math either and instead looking it up.
7,600 per Shiv.
http://www.ft86club.com/forums/showp...79&postcount=3

lolol

I did a spit take with my coffee. #winning

[strat61caster]

Originally Posted by Ultramaroon

lolol

I did a spit take with my coffee. #winning

Looks like I've peaked my forum game for the day, I'm out.