*WiZaRD- 951

Ok, does anyone know why the car (engine) ticks after I drive it awhile? I can hear it so loudly after I pop the hood, the entire thing is just 'tick tick tick' almost like a dripping noise of metal shavings onto a plate or something, I'm just curious as to what it could be, any ideas? Is it the metal expanding then coming back down to normal? The 944 doesn't do that, but this one does, hrm!

slevy951

Craig-

The turbo's have quite a bit more heat sheilding on them than the N/A's. Your probably hearing the heat sheilds cool down.

trebor_quitman

All cars (including my 944) that I have ever driven tic when they are parked after getting hot. My VW does so especially, its aircooled and gets real warm. Perhaps Your N/A did so and you may just be hearing it now because the Turbo gets allot hotter.

Bob, only guessing

*WiZaRD- 951

Maybe? The 951 seems to never go past the 1/2 way mark, but that could mean a higher temp than the 944 1/2 way mark, thanks for the tidbits fellas.

trebor_quitman

Craig,

I don't know about the engine temps being hotter. I was in reference to the exhaust temps being WAY higher in the turbos. I just hope that we are thinking about the same sounds. I can't think of anything else that would be ticking or Pinging.

*WiZaRD- 951

Yeah, that's what it is =). It's not a concern, I know cars do that, I was just curious as to WHAT was doing it... Thanks.

IanM

Craig,

If you're hearing loud ticking sounds after shutting off your car, chances are you're shutting it off quickly after driving if hard, as everything is still very hot.

Even though our cars have an electric water pump which circulates coolant through the turbo after you turn off the car, it's never a bad idea to let your car sit and idle for a minute after you've been for a drive. This is especially important after you've been driving the car hard. Every time I take my car out for a run, I routinely drive it very casually over the last mile before shutting down, to let everything cool down. What you're trying to avoid is coking of hot oil inside your turbo bearings. This will shorten the life of your turbo.

Bob S. 1984 Silver

Craig...

Your engine and what is attached to it consists of a lot of different types of metal; iron, aluminum, stainless steel. Each expands at a different rate whan heated, and each cools at a different rate. The "pings" you hear are the parts cooling off and "settling in". Not to worry. However, with a turbo, I recommend after some spirited driving, allow the engine to idle a minute or two before shuting dow. The temp in the exhaust/turbo is very high and parts can get cooked quite easily

Bob S.

Renntag

I agree. Craig, invest in a turbo timer if you are in too much of a rush to sit in the car for 5-10 minutes for cool down.

I am looking into getting one this summer.

Greg Hammond

I must three-pete the other guys in furthering the recommendation for a proper shut-down. You cannot simple "just turn off" your 951 after you're done driving it.

Proper shut-down involves idling at least a minute after typical "normal" driving (eg: your mother driving the car to the grocery store). If you're boosting the car AT ALL over "1" on your factory gauge, you should idle between 1 1/2 and 2 minutes. If you've been hard on the go-pedal, idle it it 3-5 minutes or until you can remove the dipstick without burning your fingers.

Improper shut-down will dramatically shorten the life of your turbo and manifold/exhaust components. If you don't have time to shut-down properly, you need to be driving a normally-aspirated car.

Greg