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Author Which corsa engines are valve safe???
ximon
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Registered: 23rd Sep 05
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29th Dec 05 at 22:50   View User's Profile U2U Member Reply With Quote

my cam belt went in a 1.2 8v (1993), is this valve safe, if so which others are??
shane2corsa
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Registered: 4th Sep 05
Location: Nettleham, Lincolnshire
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29th Dec 05 at 22:55   View User's Profile U2U Member Reply With Quote

might have been, depends on how the engine stopped and RPM at the time. i know the c14se runs much closer than most 8v's, i am not sure about the rest!
ximon
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Registered: 23rd Sep 05
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29th Dec 05 at 22:57   View User's Profile U2U Member Reply With Quote

well i stalled it trying to move off on ice :S , was below 1000 revvs
JoeyB
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Registered: 19th Jun 03
Location: Fareham HANTS, Drives: Astra Coupe Turbo
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29th Dec 05 at 23:02   View User's Profile U2U Member Reply With Quote

I can confirm the X14 XE is not safe...took out 12 valves at low rpm when the cambelt went
ximon
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29th Dec 05 at 23:06   View User's Profile U2U Member Reply With Quote

yeh ive heard the 1.4 16v isnt safe, was just wondering which ones are safe cos if the valves have gone then im lookin into getting either a 1.4/1.6 16v for it or buying a polo
PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
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29th Dec 05 at 23:49   View User's Profile U2U Member Reply With Quote

if all you did was stall it & the timing belt is fine, then there is no reason why it should of got damaged valves??

C12NZ IS an interference engine, so if the belt goes, you will get bent valves...
SportBoy
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Registered: 5th Oct 01
Location: Retford, Nottinghamshire
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29th Dec 05 at 23:50   View User's Profile U2U Member Reply With Quote

most of the 8 valves are 80% ish safe
PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
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29th Dec 05 at 23:50   View User's Profile U2U Member Reply With Quote

also

X/C16XE and X14XE are inteference engines, as are pretty much all vaux engines!
PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
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29th Dec 05 at 23:51   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by SportyBoy
most of the 8 valves are 80% ish safe


depending on RPM when the belt goes, but I have seen various 1.2 & 1.4 (including my old 1.4 8v) engine get damaged valves from as little as 2kRPM
ximon
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Registered: 23rd Sep 05
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30th Dec 05 at 00:18   View User's Profile U2U Member Reply With Quote

where can i find the c12nz type model number on the engine???, what else could it be if the rotor arm spins easily??? we presumed it was timing belt asit does'nt spark when turning over, checked with a timing strobe, ne ideas??
PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
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30th Dec 05 at 00:21   View User's Profile U2U Member Reply With Quote

can you actually turn the rotor over manually & have you removed the cambelt cover to check the belt if it is there??

tbh you shouldnt be able to turn the rotor arm if the belt has gone or not UNLESS all the valves are bent & stuck open due to timing belt failure, or if the dizzy itself has broken down internally.

1.2 8v is C12NZ, engine number is located on front of engine between where the oil fitler is & the gearbox bellhousing... can be hard to see, but tbh, all C12NZ engines are the same, only difference can be regarding the aux drivebelt & some models were fitted with a coilpack & not a normal dizzy/rotor arm config.
ximon
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Registered: 23rd Sep 05
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30th Dec 05 at 00:27   View User's Profile U2U Member Reply With Quote

yeh, i can turn the rotor arm by hand, checking the belt tomoz cos its too f**King cold lol, presumed it was the belt but will let yous know tomoz.
PaulW
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Registered: 26th Jan 03
Location: Atherton, Greater Manchester
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30th Dec 05 at 00:43   View User's Profile U2U Member Reply With Quote

sounds like 8 new valves & belt will be needed

not too cheap if you can fix it yourself, although a garage will be 150 to 200 including the valves & such...
tom_simes
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Organiser: South Wales
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Registered: 12th Jan 05
Location: Undy, Newport Drives: Skoda Octavia vRS estate
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30th Dec 05 at 01:04   View Garage View User's Profile U2U Member Reply With Quote

i can also confirm x16xe is not valve safe, as the last owner of my car had not changed the cambelt. It broke on her, so she had vauxhall fit a brand new engine as all 16 valves were bent! by the way the cost of vauxhall supplying and fitting a new engine is 1750!!

[Edited on 30-12-2005 by tom_simes]
ximon
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Registered: 23rd Sep 05
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30th Dec 05 at 21:34   View User's Profile U2U Member Reply With Quote

well thankfully it was just a bit of plastic that connects the distributor rod to the crank shaft, 7 sorted her out (Y)
ainsley_brader
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Registered: 24th Mar 02
Location: Tattershall, Lincolnshire
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31st Dec 05 at 11:24   View User's Profile U2U Member Reply With Quote

All corsa engines are intereference engines. But was going to say sounds just like the llug on the rotor arm!

 
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