upshift question on WRX

[Jon]

Ey guys I recently acquired an 04 WRX an i'm loving every mile of it. I've
already put in 700 miles the first 3 days I drove up the mountains twice.

So anyway, I've got a performance driving question: When I rev it up on
first and upshift about 6K rpm to 2nd (also happens when i rev it up and
upshift on any gear) the car jerks, is there anyway (shifting technique) to
avoid this?

I've thought about shift to third directly but it won't have that much
pull when I do it.

Any input will be highly appreciated.

 

[Phillip Weston]

Ey guys I recently acquired an 04 WRX an i'm loving every mile of it. I've
already put in 700 miles the first 3 days I drove up the mountains twice.

So anyway, I've got a performance driving question: When I rev it up on
first and upshift about 6K rpm to 2nd (also happens when i rev it up and
upshift on any gear) the car jerks, is there anyway (shifting technique) to
avoid this?

Does letting out the clutch slowly work?

I've thought about shift to third directly but it won't have that much
pull when I do it.

I would imagine not so.

 

[David Betts]

Ey guys I recently acquired an 04 WRX an i'm loving every mile of it. I've
already put in 700 miles the first 3 days I drove up the mountains twice.

So anyway, I've got a performance driving question: When I rev it up on
first and upshift about 6K rpm to 2nd (also happens when i rev it up and
upshift on any gear) the car jerks, is there anyway (shifting technique) to
avoid this?

Just keep practicing until you get it right. You probably need to slow
it down just a tad....don't let your left foot jerk of the clutch; it
should be coming up smoothly right to the end of the stroke whilst you
gently pick up the throttle again with the right foot. All about
timing and sensitivity - a bit like sex really.

David Betts
(e-mail address removed)

 

[Greg]

It isn't wise to rev that high on your engine until it's broken in.

 

[Edward Hayes]

Gee; you must not want to keep your car long if you are abusing it with hi
rev and load before a correct break-in.

 

[Ken Gilbert]

Ey guys I recently acquired an 04 WRX an i'm loving every mile of it. I've
already put in 700 miles the first 3 days I drove up the mountains twice.

So anyway, I've got a performance driving question: When I rev it up on
first and upshift about 6K rpm to 2nd (also happens when i rev it up and
upshift on any gear) the car jerks, is there anyway (shifting technique) to
avoid this?

I've thought about shift to third directly but it won't have that much
pull when I do it.

Any input will be highly appreciated.

jon, as another poster pointed out, the last little bit of clutch
travel is where the jerk comes in. make sure your revs are in the
right place... if you perfectly rev-match then you could suddenly pop
the clutch right out and there would be no discernable jerk at all.
most of us are human though and cannot accomplish this 100% of the
time, so we cheat a bit and let it out slowly for the last 1/4 of it's
travel. this slips it a bit, and keeps from jarring your car. make
sure you're not pouring on the power until the clutch fully hooks up
though.. no need to be sadistic about it.

remember, that difference in ratio between 1st and 2nd is the biggest
of all. you've got to shift slowly enough to let the rpms drop down
quite a bit.

jm2c
ken

 

[David & Caroline]

Gee; you must not want to keep your car long if you are abusing it with hi
rev and load before a correct break-in.

Even the owners manual says it's ok to do in emergencies ;-)

Plus - probably 75% of the WRX's out there were test driven more than once
by people who weren't very "break-in friendly" - and that's when the engine
is brand spankin' new and, even worse, hasn't been given a chance to warm
up...

I don't think a little spirited driving here and there is going to hurt
anything - it's no worse than tooling around with the engine at a constant
speed for a long time when breaking in the engine.

 

[Ken Gilbert]

Gee; you must not want to keep your car long if you are abusing it with hi
rev and load before a correct break-in.

i think "correct break in" is done at the factory, waaaaay before you
ever get your mits on the car.

i drove it increasingly harder throughout the whole 1000 miles and the
car runs VERY well. i have vanishingly little oil consumption.

anyway, short blocks are cheap.

jm2c
ken

 

[S]

Hi Jon!

Any input will be highly appreciated.

Smooth clutch technique will eliminate most of it, but there is a
lotta slop in the AWD drive train, and that's probably most of what
you're feeling. You'll get used to it after awhile.

ByeBye! S.

Steve Jernigan KG0MB
Laboratory Manager
Microelectronics Research
University of Colorado
(719) 262-3101

 

[David J.]

how do you know what the perfect rev-match is? What is it for the
WRX? What about the Forester XT?

Thanks,
david

 

[Ken Gilbert]

how do you know what the perfect rev-match is? What is it for the
WRX? What about the Forester XT?

Thanks,
david

that's just practise! spend time shifting back and forth between
two consecutive gears, attempting to make the change imperceptible.

ken