Go Back   Team-BHP > Under the Hood > Technical Stuff


Reply
 
Thread Tools Search this Thread
Old 2nd June 2008, 23:25   #16
Senior - BHPian
 
androdev's Avatar
 
Join Date: May 2007
Location: bangalore
Posts: 1,589
Thanked: 1,729 Times
Default

Quote:
Originally Posted by aaggoswami View Post
@jalsa777:


The part BENT VALVES again seems somewhat non-understandable. Please ask for explanation and post here. It is mostly not possible that the valves got BENT.
It is very common for interference engines. in fact he should be happy that the damage stopped with bent valves only.
androdev is online now   Reply With Quote
Old 2nd June 2008, 23:55   #17
Senior - BHPian
 
aaggoswami's Avatar
 
Join Date: May 2007
Location: Vadodara
Posts: 4,675
Thanked: 1,427 Times
Default

Quote:
Originally Posted by androdev View Post
It is very common for interference engines. in fact he should be happy that the damage stopped with bent valves only.

Wow, came to know that diesel engine has this problem. Yes he is lucky that only the valves are bent and no further damage to engines.
aaggoswami is offline   Reply With Quote
Old 3rd June 2008, 12:49   #18
Senior - BHPian
 
gd1418's Avatar
 
Join Date: May 2006
Location: Gurgaon
Posts: 3,578
Thanked: 656 Times
Default

In an interference diesel powerplant, if the timing belt/chain breaks or slips out of the groove (rarest of rare), then it results in major engine damage, such as bent valves, broken piston heads, damaged lining etc.

I believe when someone tried to start the Skoda was started after the mishap, the valves bent as the belt was broken and it stopped at that. If the belt had broken while the car was running then the damage probably would have been greater. And secondly, I saw that the estimate was posted as 300K. Is my eyesight correct or....

Quote:
Originally Posted by aaggoswami View Post
@jalsa777:

Thanks for upgrading us all about the presence of timing belt and not timing chain.
The fact that this does not have a timing belt cover is not good that too for such an expensive machine.

The part BENT VALVES again seems somewhat non-understandable. Please ask for explanation and post here. It is mostly not possible that the valves got BENT.

Looking forward to images.
gd1418 is offline   Reply With Quote
Old 3rd June 2008, 19:16   #19
Senior - BHPian
 
aaggoswami's Avatar
 
Join Date: May 2007
Location: Vadodara
Posts: 4,675
Thanked: 1,427 Times
Default

Quote:
Originally Posted by gd1418 View Post
In an interference diesel powerplant, if the timing belt/chain breaks or slips out of the groove (rarest of rare), then it results in major engine damage, such as bent valves, broken piston heads, damaged lining etc.

I believe when someone tried to start the Skoda was started after the mishap, the valves bent as the belt was broken and it stopped at that. If the belt had broken while the car was running then the damage probably would have been greater. And secondly, I saw that the estimate was posted as 300K. Is my eyesight correct or....
Yes, if there is something is wrong in timing, then the valves and piston interfere each other in movements, so therefore the bent valves.
Here the owner/user of the car tried to start the engine after the crash.

The estimate is 300K, yes that is the estimate given to the thread started by the dealer.
aaggoswami is offline   Reply With Quote
Old 3rd June 2008, 19:49   #20
BHPian
 
jalsa777's Avatar
 
Join Date: May 2006
Location: Mumbai
Posts: 637
Thanked: 1,044 Times
Default

Quote:
Originally Posted by ajmat View Post
It was also a lack of common sense to start the car up when it was obvious there was damage in the engine bay.

Did you expect the engine to be encapsulated in a anothet metal box. The car has suffered a major impact. If you want a car to be immune to such impact buy a hummer or an amby
i expect the timing belt to be well protected.
its a critical part,
and its basic engine design and common sense on part of engineer to protect it.

Quote:
Originally Posted by normally_crazy View Post
Jalsa,
I also would suggest you to get a 2nd opinion - but it seems like the owrk has already started on your car.

I see a mention of bent valves - buddy which dealer have you taken the car to ?

EDIT - just saw that you changed the timing belt at 60000 kms. How much did it cost ?


work has already started.

the engine was running when the impact happened.
the timing belt broke at that instant and hence the valves must have damaged.

it costs 18k for the whole timing belt assemble that they change.

I'll put up all the costs when i get them.
I am still having estimates with me right now
jalsa777 is offline   Reply With Quote
Old 3rd June 2008, 20:53   #21
Senior - BHPian
 
gd1418's Avatar
 
Join Date: May 2006
Location: Gurgaon
Posts: 3,578
Thanked: 656 Times
Default

I checked and found a startling fact. Skoda, Fiesta - both diesel & petrol and one more the name I'm forgetting have this peculiar problem. If the fan/alternator belt snaps in these cars then due to the immense back pressure the timing belt/chain too snaps instantly and the valves bend.

Jalsa, that is what happened to your Skoda..
gd1418 is offline   (1) Thanks Reply With Quote
Old 8th March 2015, 10:52   #22
BHPian
 
Join Date: Feb 2015
Location: Kharagpur
Posts: 77
Thanked: 24 Times
Default Re: alternator belt damages timing belt???

Quote:
Originally Posted by gd1418 View Post
I checked and found a startling fact. Skoda, Fiesta - both diesel & petrol and one more the name I'm forgetting have this peculiar problem. If the fan/alternator belt snaps in these cars then due to the immense back pressure the timing belt/chain too snaps instantly and the valves bend.

Jalsa, that is what happened to your Skoda..
Hello Mr. GD1418,

If the Fiesta Diesel has the same problem, the Figo Diesel must be having the same problem too. I just came by this thread accidentally.

Few months ago, helping a friend with his car purchase decision, I found a gentleman shouting at the Ford guys for ruining his Figo. The Figo had snapped alternator belt, timing belt, bent valves, broken pistons, everything you can imagine had got damaged and the service center had quoted 2 lakhs for repairs. The car was spotless from outside. I must have enquired with the service center then.

But this is a very very rare problem.

Can you give a few more details regarding why this happens in these cars?

Regards,
Ashok.
Ashok Naik is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Indigo : Alternator Belt CaAT Technical Stuff 19 4th January 2014 15:49
Timing (cam) belt vs chain sbasak Technical Stuff 33 10th November 2009 16:00
Lancer diesel Timing belt Tensioner - Help! dilipkumar7278 Technical Stuff 6 9th November 2007 15:18
Trouble after timing belt change hamadrayad Technical Stuff 1 6th November 2006 20:05
Changing the Timing Belt .. ?? khaadu75 Technical Stuff 5 5th February 2006 19:38


All times are GMT +5.5. The time now is 17:22.

Copyright ©2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks