spacecadet
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- 378
I would like to get your opinion on this.
Last (and first) time I was on a rolling road my Ghibli was measured to have 250bph. I thought that probably the engine and the turbos are tired after 140k kms, so I started collecting all the spare parts needed for a full (top and bottom) engine rebuild.
A month ago the timing belt was changed, 3 years passed since the first timing belt change which was done when I bought the car. And it turned out that neither now nor back then was it properly timed, just eyeballed to the existing marks. Now it feels even more weak then it was. I'm pretty sure the timing chain was never changed, actually it already has a slight noise if listening carefully, and after removing one of the cover there I could see a great amount of slack in it as well.
This means I definitely have to pull engine, but I'm not sure about doing the rebuild now given that probably the timing is quite off. I either replace the chains, adjust valve clearances and properly set the timing or I do the full rebuild. I'm leaning towards the first option hoping proper timing would give the numbers closer to factory values and I could run the engine further while keeping the hard to get spare parts when they are really needed. Also it goes against the rebuild that the engine is feels healthy otherwise, compression ok, not a big amount of leakdown, no smoking. If I would choose the rebuild I wouldn't have to pull the engine again (though I guess would be much faster for the second time) and would be fine for a really long time as I'm only doing 3-5k miles yearly.
Thoughts?
Last (and first) time I was on a rolling road my Ghibli was measured to have 250bph. I thought that probably the engine and the turbos are tired after 140k kms, so I started collecting all the spare parts needed for a full (top and bottom) engine rebuild.
A month ago the timing belt was changed, 3 years passed since the first timing belt change which was done when I bought the car. And it turned out that neither now nor back then was it properly timed, just eyeballed to the existing marks. Now it feels even more weak then it was. I'm pretty sure the timing chain was never changed, actually it already has a slight noise if listening carefully, and after removing one of the cover there I could see a great amount of slack in it as well.
This means I definitely have to pull engine, but I'm not sure about doing the rebuild now given that probably the timing is quite off. I either replace the chains, adjust valve clearances and properly set the timing or I do the full rebuild. I'm leaning towards the first option hoping proper timing would give the numbers closer to factory values and I could run the engine further while keeping the hard to get spare parts when they are really needed. Also it goes against the rebuild that the engine is feels healthy otherwise, compression ok, not a big amount of leakdown, no smoking. If I would choose the rebuild I wouldn't have to pull the engine again (though I guess would be much faster for the second time) and would be fine for a really long time as I'm only doing 3-5k miles yearly.
Thoughts?