Shunt during gear changes

003 996 Turbo. When giving it a few beans in lower gears (Normally 1st & 2nd) and then changing up I feel it's a very jerky / shunty / lurchy change. It's hard to describe, but thats the closest I can get! Does anyone have a clue what I'm on about (!) and experienced something similar or am I going to have to adjust my technique a bit? I've only had the car a month or so, so it's all quite new still. I'm under a warranty, so am happy to visit my OPC and ask them to take a look. Thanks

Nick - is this when you are engaging the clutch or when you actually select the gear?

It's (from memory) when I release the gas quite quickly when accelerating hard and as I dip the clutch to change then I feel a sort of "shunt". Whereas, if I ease off the gas the first 1cm slowly then the rest quite quickly I seem to avoid the shunt. Geeze, its hard to explain!

it sounds like it's just technique :wink:

Yeah, maybe it is technique My previous car required a bit more brute force when changing gear so prehaps I need to be more gentle... I'm still practicing my lanuch-from-lights technique!

I know exactly what you mean It's going to be down to technique, slow changes in the lower gears, smooth clutch action will stop the shunt. This is because the car has too much grip and the clutch slips slightly. As regards 'launching from lights' Forget it! Your clutch will say goodbye before long. Basically just get the car moving in 1st and engage 2nd and floor it.

I discovered the floor-it-in-2nd technique this morning. F**k me, it don't half shift I tell you! Geeze....! I'm sure some people when they say that they floor it actually don't genuinely "floor it" - because I certainly noticed the difference between really flooring the loud-pedal and pushing it down further. (If you see what I mean!!) Can't wait to practice some more on the way home tonight!

If you floor it in first the clutch slips and try to shift into second and you just can't accelerate as the clutch is still slipping. It's so funny at the lights you get the car rolling, the one beside you pulls a length on you and you nail it in second....goodbye Welcome to Porsche ownership!

Maybe its something to do with the turbo boost... my bro's Focus RS used to do this, sort of hang on to the revs after you dipped the clutch, and gave a v shunty change if you got it wrong. As you say, lifting off a moment before sorts it out.

Ahah... yes, I too have found that if you want to quick getaway at the lights you need to get rid of 1st gear asap, then boot it in 2nd all the way round. As is said, peops (in alternative vehicles!)often think they have got you, but as the coal pours in for 2nd then 3rd....they become a dot in the mirror.... superb every time - jeez will I ever grow up :wink:

Hello everyone - first day as a member. Thanks for the site it's great 8) I remember test driving a Murcielago around Central London (long story) in stop-start traffic. The salesman kept telling me to wait for a decent gap ahead before moving off each time. First gear, very high revs and whip the clutch up very quickly! Also wanted high revs during the gear changes. Does that really help preserve the clutch?

Not until you swap the Porsche for a Mercedes :lol:

911 turbo hesitation at low revs I have just bought a 911 turbo s and find the engine not particularly smooth in 1st and 2nd gear below 3000rpm. The engine doesn't seem to respond linerly to throttle control, at some revs little response, then lots at a few more revs. After a long run on the mororway using some boost, it seemed to clear. Maybe it's just a characteristic of the engine (having the X50 pack may be something to do with it)? Any comments? Also, after reading some of the posts what do tt and rms refer to?

Re: 911 turbo hesitation at low revs Hi and welcome! TT, basically some people like to call the Turbo TT ie. Twin Turbo after the twin turbo arrangement. RMS, rear main seal, a problem the can affect all Porsche cars however it does seem to affect the normal 996/997 Carreras more than the others. Basically it's a seal that fails causing a minor oil leak ie. a few drips.