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What would be considered normal for a 350/400 sohc?I've done 500 miles of running in new pistons and rings, the bores were properly machined and honed and I know that my valve guides are on the upper end of the serviceable limit. Oil level is just above the min mark on dipstick after 500 miles. Is this acceptable or should I really get the head reconditioned?I'll be honest I can't detect any smoke from the exhausts in my mirrors while riding or at idle but my friend said the other day there's a faint haze when I'm giving it the beans.CheersSimonSent from my SM-G780G using Tapatalk
Quote from: 350Simon on September 14, 2022, 11:10:37 AMWhat would be considered normal for a 350/400 sohc?I've done 500 miles of running in new pistons and rings, the bores were properly machined and honed and I know that my valve guides are on the upper end of the serviceable limit. Oil level is just above the min mark on dipstick after 500 miles. Is this acceptable or should I really get the head reconditioned?I'll be honest I can't detect any smoke from the exhausts in my mirrors while riding or at idle but my friend said the other day there's a faint haze when I'm giving it the beans.CheersSimonSent from my SM-G780G using TapatalkDid you replace the 4 valve stem seals?It has been my experience that when valve stem seals need replacing on a car engine then you tend to get visible smoke if the engine stands for a while from hot and you then restart it 5 mins later - the smoke is often just for the first 5-10 seconds then all is good. Again on cars I have found giving it the beans also burns oil & produces smoke at high engine rpm.I would not be too concerned until you carry out your first oil & filter change then see how it goes on the next 500 miles making sure you check the oil on level ground etc. I would also check if there a lot of excess pressure from the crankcase vent pipe system.
Guide replacement generally means refacing the valve seats and that's not a skill most people have and does require special tools. Graham (Trigger) has the tools, isn't too far away from you BUT I have heard he's sort of semi retired these days so whether he will still be interested is another matter. No harm in asking.
..... especially when I can't see any smoke at all!
Another quickie sorry guys, are the sohc seats 3 angle Sent from my SM-G780G using Tapatalk
Yes, it requires 3 separate seat cutters.