bit of advice please -engine clatter
Discussion
I have run my catD repair projects engine for the first time today. It is a 4.0L 1992 griffith that has had a front end shunt. The manifolds were damaged and the y piece crushed. The engine mounts had failed and the crankshaft pulley flattened against the chassis cross rail.Must have stopped pretty abruptly!
I have replaced the pulley and fitted new style manifolds with the clamp ring instead of the bolted flanges, partly because i preferred the clamping ring over the bolts, partly due to thats what i could get hold of. My intention is to remove the cats but they are currently still fitted but with the lambda sensor holes plugged off.
It was a pig of a job fitting the manifolds in place but i thought i had managed it successfully until just now.
The end ran first time i tried it, oil pressure 50, smooth tick over but there is a metallic clatter from somewhere near the nearside rear most cylinder. My first thought is perhaps a sticking valve, broken valve spring, or something much much worse.
Then i noticed the exhaust gasket (i used the individual gaskets) was out on line on that particular cylinder. I had missed the gasket with the lower bolt and the gasket has moved slightly, lower edge swung forward by about 12mm. This would be presenting a gap between the exhaust manifold and cylinder head.
So, my question is this, would the leaking exhaust at the cylinder create a clatter as the gas escapes, do i get in and realign the gasket, or am i just getting desperate for any easy fix and should i be suspecting something much worse and just bite the bullet and pull the head off?
Any experience of this anyone?
Thanks.
Phil.
I have replaced the pulley and fitted new style manifolds with the clamp ring instead of the bolted flanges, partly because i preferred the clamping ring over the bolts, partly due to thats what i could get hold of. My intention is to remove the cats but they are currently still fitted but with the lambda sensor holes plugged off.
It was a pig of a job fitting the manifolds in place but i thought i had managed it successfully until just now.
The end ran first time i tried it, oil pressure 50, smooth tick over but there is a metallic clatter from somewhere near the nearside rear most cylinder. My first thought is perhaps a sticking valve, broken valve spring, or something much much worse.
Then i noticed the exhaust gasket (i used the individual gaskets) was out on line on that particular cylinder. I had missed the gasket with the lower bolt and the gasket has moved slightly, lower edge swung forward by about 12mm. This would be presenting a gap between the exhaust manifold and cylinder head.
So, my question is this, would the leaking exhaust at the cylinder create a clatter as the gas escapes, do i get in and realign the gasket, or am i just getting desperate for any easy fix and should i be suspecting something much worse and just bite the bullet and pull the head off?
Any experience of this anyone?
Thanks.
Phil.
long term plan is to remove the cats, wouldn't cause any problems with the running though with them in will it??
I have been told the cats ruin the exhaust note so I need to remove the cats. I Just put these maniolds on to get the engine up and running, plus i prefer the clamp ring system over the bolted flanges so would prefer to keep them on there. Will go and see if the exhaust gasket makes any difference.
Thanks,
Phil.
I have been told the cats ruin the exhaust note so I need to remove the cats. I Just put these maniolds on to get the engine up and running, plus i prefer the clamp ring system over the bolted flanges so would prefer to keep them on there. Will go and see if the exhaust gasket makes any difference.
Thanks,
Phil.
well, i guess sometimes when you fear the worst.... thats all it was, the exhaust gasket miss-aligned...
Here it is, driving for the first time again..
http://www.youtube.com/watch?v=v-oKib00lHE&fea...
Here it is, driving for the first time again..
http://www.youtube.com/watch?v=v-oKib00lHE&fea...
my250gt said:
long term plan is to remove the cats, wouldn't cause any problems with the running though with them in will it??
I have been told the cats ruin the exhaust note so I need to remove the cats. I Just put these maniolds on to get the engine up and running, plus i prefer the clamp ring system over the bolted flanges so would prefer to keep them on there. Will go and see if the exhaust gasket makes any difference.
Thanks,
Phil.
Sorry didnt read your 1st post properly.....glad to hear it running !I have been told the cats ruin the exhaust note so I need to remove the cats. I Just put these maniolds on to get the engine up and running, plus i prefer the clamp ring system over the bolted flanges so would prefer to keep them on there. Will go and see if the exhaust gasket makes any difference.
Thanks,
Phil.
Sandy
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