Lots of Steam from cold engine start up each chilly morning.

Abott10 · 7th February 2018, 12:24

MY MG6 engined 1.8T ZT-T see masses of steam on cold engine start up and clouds of it exiting the exhaust for the first couple of miles in this chilly weather.

So I drilled a small hole in the front and rear of the lowest part of the rear silencer. Immediately lots of water passed around the drill bit all over my hands and onto the floor. I would say at least a small cup full of water drained out.

The attached images show what was involved.

Mgaz · 7th February 2018, 13:38

Is this why some silencers rot so bad?

I've seen an R45 with half the silencer in rusty bits with big holls in it!. Least its fair to say it wouldn't be holding any more water in that state.

stux99 · 7th February 2018, 15:33

So is that why my GS has drain holes either end of the box?

RoverP480 · 7th February 2018, 15:41

Every gallon of fuel burnt produces a gallon of water . Was the silencer an original or aftermarket one. I know we ( Rover ) used to put a small pitot type tube inside silencers to suck out any water from the bottom when the engine running. Short journeys are the main problem , as the exhaust doesn't get hot enough to evaporate the condensate off as vapour. We had a van in the department that wasn't used but frequently started for a few mins , to move around from one part of the workshop to another , exhaust lasted only 4 months

T-Cut · 7th February 2018, 15:58

A small cup full of petrol generates around the same volume of water when combusted. So every gallon of juice you burn puts around 1700 gallons of water vapour out the exhaust pipe.

TC

bl52krz · 7th February 2018, 17:50

Not in my diesel it don’t rot away. It’s original. 16 years old this year. Another advantage of diesel.

T-Cut · 7th February 2018, 20:10

Quote:

Originally Posted by bl52krz

Not in my diesel it don’t rot away. It’s original. 16 years old this year. Another advantage of diesel.

Diesels make the same amount of water, but it's oily.

TC

minimutly · 7th February 2018, 20:47

Quote:

Originally Posted by RoverP480

Every gallon of fuel burnt produces a gallon of water .

Really? You would have thought this would be the breakthrough the Arabs have been looking for regarding their water shortage....

Mgaz · 7th February 2018, 21:55

Is this hole worth drilling in my silencer ?

You say the water came out with a hole at the front end rather than the rear?

I've noticed there seems to be a tiny pin hole in the one end of the MG F silencer as well. And if you put your finger by it, you feel water coming out of it on tick over.

One point about the ZT 190 exhaust, didn't I read back in the day that they had a valve inside them that opened up when giving it some welly ? To give the 190 a more sporty engine note ?

If that's true, wouldn't want to drill into something that damaged it some how?

Comfortably Numb · 7th February 2018, 22:03

The K series, in all formats, deserved the reputation for blowing its ORIGINAL hg, it was a rubbish gasket, and far too many MGR motors suffered failure before 50,000 miles.
However, properly refitted with the improved gasket, proper maintenance of the cooling system, and driving sensibly during warm-up, the engines are generally very reliable, and need not worry their owners that every trip could be the last!
The MG breaker specialists at Peterborough who supplied my second hand replacement VVC engine assured me they always change the HG before an engine leaves them, whether it has failed or not, because if it hasn't failed then, they don't want angry customers complaining that it just did!

7th February 2018, 13:38	#2
Mgaz Gets stuck in MG ZT190, MG ZS TD, MGF VVC, R200 TD bubble, Austin A35 Join Date: May 2017 Location: shrewsbury Posts: 648 Thanks: 530 Thanked 82 Times in 56 Posts	Is this why some silencers rot so bad? I've seen an R45 with half the silencer in rusty bits with big holls in it!. Least its fair to say it wouldn't be holding any more water in that state. __________________ They say you should never meet your Idols. Well.... you know that car you always wanted? https://www.youtube.com/channel/UCGx...zZeAsYRU9aZu-A ^Be kind, Subscribe^ (MGR videos )

7th February 2018, 15:33	#3
stux99 Posted a thing or two MG3/TF Spark/ MGTF Steppy/ MG GS Join Date: Dec 2007 Location: Wincanton,Somerset Posts: 1,073 Thanks: 6 Thanked 9 Times in 7 Posts	So is that why my GS has drain holes either end of the box? __________________ [SIGPIC][/SIGPIC]

7th February 2018, 17:50	#6
bl52krz This is my second home Rover 75 cdt club + Rover 2.5 KV6 Conni SE Join Date: May 2008 Location: Birmingham Posts: 11,433 Thanks: 6,587 Thanked 2,262 Times in 1,729 Posts	Not in my diesel it don’t rot away. It’s original. 16 years old this year. Another advantage of diesel. __________________ Great Barr, Birmingham.

7th February 2018, 21:55	#9
Mgaz Gets stuck in MG ZT190, MG ZS TD, MGF VVC, R200 TD bubble, Austin A35 Join Date: May 2017 Location: shrewsbury Posts: 648 Thanks: 530 Thanked 82 Times in 56 Posts	Is this hole worth drilling in my silencer ? You say the water came out with a hole at the front end rather than the rear? I've noticed there seems to be a tiny pin hole in the one end of the MG F silencer as well. And if you put your finger by it, you feel water coming out of it on tick over. One point about the ZT 190 exhaust, didn't I read back in the day that they had a valve inside them that opened up when giving it some welly ? To give the 190 a more sporty engine note ? If that's true, wouldn't want to drill into something that damaged it some how? __________________ They say you should never meet your Idols. Well.... you know that car you always wanted? https://www.youtube.com/channel/UCGx...zZeAsYRU9aZu-A ^Be kind, Subscribe^ (MGR videos )

7th February 2018, 15:41	#4
RoverP480 Gets stuck in None at the moment Join Date: Jan 2018 Location: Hereford Posts: 501 Thanks: 1 Thanked 165 Times in 146 Posts	Every gallon of fuel burnt produces a gallon of water . Was the silencer an original or aftermarket one. I know we ( Rover ) used to put a small pitot type tube inside silencers to suck out any water from the bottom when the engine running. Short journeys are the main problem , as the exhaust doesn't get hot enough to evaporate the condensate off as vapour. We had a van in the department that wasn't used but frequently started for a few mins , to move around from one part of the workshop to another , exhaust lasted only 4 months

7th February 2018, 15:58	#5
T-Cut This is my second home Rover75 and Mreg Corsa. Join Date: Nov 2006 Location: Sumweer onat mote o'dust (Sagin) Posts: 21,754 Thanks: 341 Thanked 3,660 Times in 2,924 Posts	A small cup full of petrol generates around the same volume of water when combusted. So every gallon of juice you burn puts around 1700 gallons of water vapour out the exhaust pipe. TC

7th February 2018, 22:03	#10
Comfortably Numb Posted a thing or two Rover 75 Saloon Join Date: Dec 2017 Location: Penrith Posts: 1,336 Thanks: 165 Thanked 303 Times in 241 Posts	The K series, in all formats, deserved the reputation for blowing its ORIGINAL hg, it was a rubbish gasket, and far too many MGR motors suffered failure before 50,000 miles. However, properly refitted with the improved gasket, proper maintenance of the cooling system, and driving sensibly during warm-up, the engines are generally very reliable, and need not worry their owners that every trip could be the last! The MG breaker specialists at Peterborough who supplied my second hand replacement VVC engine assured me they always change the HG before an engine leaves them, whether it has failed or not, because if it hasn't failed then, they don't want angry customers complaining that it just did!