Well my luck has finally come to an end
29-10-2007, 12:31 PM
#1
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Well my luck has finally come to an end
The big power CVH has finally given in.
I use the S2 everyday, and this engine has done over 60k miles. Although its never been tracked, its seen plenty of abuse in it's time, with plenty of 150mph + runs and over 2 bar of boost to 7400rpm. It costs me next to nothing to run, oil changes every 4k or so, petrol and that's about it.
Last night i was giving it some on a dual carriage way, when i heard a clattering sound. Thought it was the gearbox, but then realised i had no power. I coasted to halt, and when i tried to start, it sounded like it had no compression. Opened the bonnet expecting a snapped cam belt, but all looked well. No oil, no blown oil cap, all normal.
This morning, pulled the head off, and i've droped number 2 exhaust valve
This has always been my biggest worry with the engine - rightly so it seems. The valves are huge, the weight and off them coupled to fatigue etc eventually kills them. Tim's done them, i remeber when RW's old car did one, plus a good few others - it's the CVH's biggest weak point.
When Karl did the head for me, he suggested getting the valves ceramic coated - i did, but it seems that after 60k it's given up.
Not sure what to do now - the head is probably repairable, but the pistons are Cosworth Racing and aren't available anymore. The piston hasn't holed, but looks pretty molten.
Bit gutted,. but she's done well..
I use the S2 everyday, and this engine has done over 60k miles. Although its never been tracked, its seen plenty of abuse in it's time, with plenty of 150mph + runs and over 2 bar of boost to 7400rpm. It costs me next to nothing to run, oil changes every 4k or so, petrol and that's about it.
Last night i was giving it some on a dual carriage way, when i heard a clattering sound. Thought it was the gearbox, but then realised i had no power. I coasted to halt, and when i tried to start, it sounded like it had no compression. Opened the bonnet expecting a snapped cam belt, but all looked well. No oil, no blown oil cap, all normal.
This morning, pulled the head off, and i've droped number 2 exhaust valve
This has always been my biggest worry with the engine - rightly so it seems. The valves are huge, the weight and off them coupled to fatigue etc eventually kills them. Tim's done them, i remeber when RW's old car did one, plus a good few others - it's the CVH's biggest weak point. When Karl did the head for me, he suggested getting the valves ceramic coated - i did, but it seems that after 60k it's given up.
Not sure what to do now - the head is probably repairable, but the pistons are Cosworth Racing and aren't available anymore. The piston hasn't holed, but looks pretty molten.
Bit gutted,. but she's done well..
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29-10-2007, 01:09 PM
#12
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Lol. no thanks mate 
It was very economical, cruised at 15.5, did 30+mpg round town... Think it will be more sensible to build a zetec now, the parts are cheap as from the states.
It was very economical, cruised at 15.5, did 30+mpg round town... Think it will be more sensible to build a zetec now, the parts are cheap as from the states.
29-10-2007, 04:04 PM
#22
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Re: Well my luck has finally come to an end
Originally Posted by Rick
The valves are huge, the weight and off them coupled to fatigue etc eventually kills them. ..
29-10-2007, 05:15 PM
#27
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Gutted mate, been there myself about 12 months ago...
After the valve dropped it sat round the back of my work's for 6 months before I could gather the enthusiasm to repair it.
https://passionford.com/forum/viewto...199&highlight=
Running fine now, get some bits ordered and get it back on the road
After the valve dropped it sat round the back of my work's for 6 months before I could gather the enthusiasm to repair it.
https://passionford.com/forum/viewto...199&highlight=
Running fine now, get some bits ordered and get it back on the road
30-10-2007, 12:00 PM
#32
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Originally Posted by Tim
Ouch been there twice change the exh valces evry 5000 miles
Exactly what Karl said to me when we were discussing big power CVH's
it sounds very drastic but it's not tbh, Ł200 or Ł300 quid i guess to do it...worth it in the long run
30-10-2007, 12:42 PM
#33
Originally Posted by bud-weis
Originally Posted by Tim
Ouch been there twice change the exh valces evry 5000 miles
Exactly what Karl said to me when we were discussing big power CVH's
it sounds very drastic but it's not tbh, Ł200 or Ł300 quid i guess to do it...worth it in the long run
tim
31-10-2007, 08:39 PM
#35
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Re: Well my luck has finally come to an end
Originally Posted by Rick
The big power CVH has finally given in.
Ricks 200bhp s2 is fucked everyone
31-10-2007, 10:11 PM
#37
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had something similar happen to my old one.
was driving her and heard a little noise. pulled up and the smoke coming from the bonnet led to me belive something had let go
shame it was a gorgeous car but one of the rods had made a dash.
was driving her and heard a little noise. pulled up and the smoke coming from the bonnet led to me belive something had let go
shame it was a gorgeous car but one of the rods had made a dash.
04-11-2007, 06:31 PM
#39
Re: Well my luck has finally come to an end
Originally Posted by dingy
Originally Posted by Rick
The big power CVH has finally given in.
Ricks 200bhp s2 is fucked everyone
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