INCREDIBLE pics: what happens to a K20 in a 5th-2nd misshift

[mbt]

8O 8O 8O 8O 8O

http://www.importclassifieds.ca/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=011808

ever wondered what happens to an Acura RSX-S engine when the driver mis-shifts from 5th to 2nd at near-redline? a picture is worth a thousand words, a whole slew of pictures is worth a novel! the engine is literally in pieces!

huge pictures, but well worth the time it takes to load all of them 8O

[mbt]

believe it or not, these bits of tinsel used to be pistons 8O



lots more incredible photos of engine carnage in the link...

[edzzz]

wattafak!!!! Stupid moriones!!!

[Karding]

ahhh, kung may protection lang sana ang tranny ng Acura para wag hayaang mag shift sa 2nd from 5th ang RSX, wala sanang ogagz na magkamali ng shift :mrgreen:

blown engine, well known sa RSX-S, ganda naman kse ng shifting, close na close. 8)

[slickae92red]

kaya takot akong mag short shift eh.

[kevinp]

lupit nyan a. kung balak niya mag-6th gear ng naka-redline sa 5th, ang layo ng napasukan nya.


Di ba ang mga tranny na may synchromesh, may protection against this? yung lancer namin, nasa 4000rpm lang ako sa isang gear, di ko na maipasok sa lower gear. pag mga 3000rpm, tsaka lang pumapasok sa shift gate.

[Karding]

kaya takot akong mag short shift eh.

yung RSX-S hindi lang short-throw shifter, close gears pa kaya prone sa mis-shifts (closely spaced gates ). naka short-shifter ako sa old integra ko, never mis-shifted. 5th to 3rd while running 70mph 3,500rpm, pag down shift ng 3rd, pasok na pasok pa then rpm needle nasa 6-7k rpm at least. yung mga blown engine na RSX-S drivers kse d yata tinatantya kung saan babagsak ang rpm needle after downshifting. I know kung 80mph 5th gear sa old teg ko, hirap na ipasok sa 3rd. kailangan ng isang matinding bomba sa gas :mrgreen:

kevinp, triple synchro on 1 and 2 then double synchros ang 3-6th. Super close lang talaga ang gears when shifting. Its supposedly good and an advantage pero ang ibang owners eh inexperienced sa ganitong tranny. then yung ganyang sitwasyon na nalulusaw ultimong forged pistons eh nasa 5th gear na, 7,000 rpm down-shift pa sa 3rd. bottom line, inexperienced driver daw

now, how about the fuel cut-off when you hit the rev-limiter???

The rev limiter only comes into effect when accelerating, not decelerating. No fuel is being used on zero throttle downshifts. Physics regulates downshifts, not the computer

[mbt]

kevinp,

balak niyang mag downshift from 5th to 4th, not upshift to 6th... syncros prevent gear grinding during shifting due to the different speeds the two gears are spinning at, they won't save you from blowing up your engine due to an overrev... and as karding has noted, rev limiters won't be of any help here too.

dapat nga siguro mga kotse na ganito (RSX-S, celica GTS...) merong mechanical lockout yung shifter ng 1st and 2nd gears at least when the car is moving fast and is at high rpm.

[Karding]

kaya yung WRX ko, hirap na hirap kaming pumunta ng 1st from 2nd while running 15mph 8O kailangan complete stop. minsan nakakabugnot pero kapag may naririnig akong mis-shift like RSX-S, pasalamat na din ako :mrgreen: sayang yung mga blown engine ng RSX-S, sarap pa naman i-kambyo nun 8)

[kevinp]

kevinp,

balak niyang mag downshift from 5th to 4th, not upshift to 6th... syncros prevent gear grinding during shifting due to the different speeds the two gears are spinning at, they won't save you from blowing up your engine due to an overrev... and as karding has noted, rev limiters won't be of any help here too.

dapat nga siguro mga kotse na ganito (RSX-S, celica GTS...) merong mechanical lockout yung shifter ng 1st and 2nd gears at least when the car is moving fast and is at high rpm.

i read that part too in the thread. It doesn't make sense kaya naisip ko baka mag-upshift na siya and na-misinterpret lang nung friend nya kasi sabi 7k na raw ang revs in 5th. e if he wanted to downshift, 4th gear man or second gear doesn't matter kasi he would've blown the engine in both cases.