altezzaclub Posted January 24, 2009 Report Posted January 24, 2009 When the 'rolla starts it rattles in the bearings until the oil light goes out. Luckily it is tuned to start and idle with no accelerator... The oil filter is covered in Japanese writing, so its not a cheap repco copy and I assume it is OK. Now, does anyone know if the rattle would be main bearings or bigends? I might go to the hassle of dropping the sump and changing them if the crank is still OK. I'd like to slip a washer under the oil pump spring while I'm under there. In the 1970/80s when I was rallying Datsuns the Toyotas had a reputation for a weak bottom end but I don't know if that was mains or rodends. Its only done 110,000km, and the compressions are all at 150psi. Quote
corollaart Posted January 25, 2009 Report Posted January 25, 2009 don't no what sort of engine it is????? But if its a k engine with a few kms on it i would look at timing chain not bigends or mains. :hmm: Fairly common ,what makes you think its the bearings? Any way thats where i would be looking first. Do the tensioner as well . :y: Thats if it a k engine :hmm: rob Quote
philbey Posted January 25, 2009 Report Posted January 25, 2009 Yeh sounds to me like a timing chain rattle as well. Or you could get noise from hydraulic lifters if it's a 5K. Quote
altezzaclub Posted January 25, 2009 Author Report Posted January 25, 2009 Its a 4K... '83 KE70 with low Km really. I'm surprised it does it. Sounds more like bearings than the chain, although I know they rattle the chain easily. Quote
corollaart Posted January 25, 2009 Report Posted January 25, 2009 Ok then put a oil pressure gauge in to see if it is lacking in pressure. :hmm: Quote
altezzaclub Posted January 26, 2009 Author Report Posted January 26, 2009 Thanks corollaart, I should've remembered I had a Datsun 1600SSS dash sitting in the garage with a guage in it! Fitted just the oil pressure guage and the sender unit, but it is too damped to be useful. It slooowly climbs to halfway between 45 and 90psi, and slooowly drop to idle about 1/4 way to 45psi. So no use in the first 30seconds. On a good note however, it didn't rattle when I started it, several times, and when I refitted the light sender unit the light went out in 2 seconds. Maybe the 1300km to Benalla and back last week has cleaned some shit out. Time for an oil change just in case! Quote
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