Melted 6 spark plugs - what would you do?
09-22-2008, 05:39 PM
#41
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This is an old thread that appears to have been brought up again by a spammer ( now banned )
Be interesting to see how Pekka has got on though. As for that engine....it is absolutely impossible to tell for sure if there is any piston damage without stripping the engine, and given what has happened, no way would I even consider putting it together without removing the pistons..
Been there, done it and will not make that mistake again. Which gets even worse with melted plug tips, that can go down the side of a piston and cause damage.
Be interesting to see how Pekka has got on though. As for that engine....it is absolutely impossible to tell for sure if there is any piston damage without stripping the engine, and given what has happened, no way would I even consider putting it together without removing the pistons..
Been there, done it and will not make that mistake again. Which gets even worse with melted plug tips, that can go down the side of a piston and cause damage.
10-06-2008, 10:38 AM
#43
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10-06-2008, 10:49 AM
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The car runs now quite well. I'm still trying to figure out some idle and low-speed driving issues. Apart from some hesitation when I suddenly accelerate and lift throttle at low speed, the engine seems to be running quite nicely.
I've also done some low-boost tuning and leaning the VE-table from very rich AFR (10.0 or less) to somewhere around 11...12.5. As I'm doing this first time, I like to go forward with small steps, so first I had rev-limiter set at 4000, then 5000 and now it is at 6000 rpm. I need to test more in dyno, as after 5000 it seems that there's no traction at all in the higways here in Europe where I'm driving... :-)
There has been a small amount of knock 1-2 degrees, so I have removed timing in those areas. First I was very scared when I noticed knock with AFR at 10.0, but as I've understood, it is also possible to have knock with very rich condition.
10-06-2008, 10:54 AM
#45
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consult with a machineist regarding the scratches in the bores , i know pictures don't do justice to things like that , a machinist might deem that you just need a hone job.
heads can br resurfaced , but you should also check the valves and do a vaccume test at the machine shop just to make sure the heads are 100%
heads can br resurfaced , but you should also check the valves and do a vaccume test at the machine shop just to make sure the heads are 100%
Engine runs fine now. No oil consumption or anything like that.
10-06-2008, 10:58 AM
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Well, we will see how long it lasts. But at least at the moment, there are no problems. Except some traction issues with rear tires...tyres...tires...tyres...well, whatever they're properly called....
10-06-2008, 11:01 AM
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This is an old thread that appears to have been brought up again by a spammer ( now banned )
Be interesting to see how Pekka has got on though. As for that engine....it is absolutely impossible to tell for sure if there is any piston damage without stripping the engine, and given what has happened, no way would I even consider putting it together without removing the pistons..
Been there, done it and will not make that mistake again. Which gets even worse with melted plug tips, that can go down the side of a piston and cause damage.
Be interesting to see how Pekka has got on though. As for that engine....it is absolutely impossible to tell for sure if there is any piston damage without stripping the engine, and given what has happened, no way would I even consider putting it together without removing the pistons..
Been there, done it and will not make that mistake again. Which gets even worse with melted plug tips, that can go down the side of a piston and cause damage.
