Tim, I've got the following advice to pass along from the Oracle of Honda: It might be prudent to inquire if they were kept in an upright position > after bleeding in light oil and if the anti-foam chambers were filled with > oil before starting. If there is no scaring of lobes or followers, > there should be no noise. > I remove the plugs from a motor and spin it up on the starter till the oil > pressure light goes out before starting the engine. I want to be sure of > oiling before my rebuild is compromised. I've had a lifter collapse while > the motor was running due to a particle passing through. The principle of > operation must be understood to ensure success. They work by oil pressure > alone. Any air, at any point is counter to function. That is the reason for > filling the anti-foam chambers and making sure the oil supply is complete > and working properly. The members I've assisted in replacing the tensioner > have had to go through this and all have had no problems. A second thought > is if he is sure the tappets are the source of his noise ? I believe he > specified the exhaust side (front). That would be a place to be extra > careful about checking on oiling. The front and back are separate sourced. > (although all originate at the pump) >
Hope this helps, the 700S is a great bike and worth keeping on the road. -Kyle On Sun, Mar 17, 2013 at 11:26 PM, Javier Garcia <[email protected]> wrote: > I have used synthetic on my 96 NH 750 for about 3 years with no problems. > I assume the lifters are the same, or very similar to yours. > Javier. > > > On Sun, Mar 17, 2013 at 10:45 PM, ranamacar <[email protected]> wrote: > >> That may be the problem. We usually use synthetics in all of the bikes we >> change oil in. I think I'm going to try running some seafoam through it and >> switch to standard 10W40 and see if it helps. Cheaper than replacing 16 >> lifters at $40 apiece. >> >> Tim >> >> On Sun, Mar 17, 2013 at 7:53 PM, Dario <[email protected]> wrote: >> >>> Hello Tim!, which grade of oil are you using in your bike?. The 700 >>> likes a good quality mineral oil 10W40. synthetic oils are known to cause >>> lifters to be noisy. I use in mine castrol 20W50 but I only ride it during >>> summer (hot weather). >>> >>> Best regards, >>> >>> >>> On Saturday, March 16, 2013 4:07:24 AM UTC-4, Tim Hansen wrote: >>>> >>>> 84 700SC, project bike (read as basket case- it came home in boxes) I >>>> picked up last fall. My son the bike mechanic and I have been playing with >>>> it in our spare time over the winter and almost have it ready to go. >>>> He rebuilt the carbs for me and put two new tires, new starter, etc. on >>>> it, I repainted it a generic color until I figure out what I want it to >>>> look like and have been fixing the little things like lights and wiring. >>>> Put a new battery in it and it starts. Smoked like hell for the first few >>>> minutes, but it also hadn't been started for about 6 years, so the rings >>>> needed to reseat themselves. >>>> The main problem is lifter rattle. The exhaust valve lifters are loud. >>>> My question is, what can I try before spending a bunch of money on new >>>> lifters to quiet them down without damaging the engine? I know nothing >>>> about hydraulic lifters other than they're supposed to be low maintenance, >>>> in that they are self adjusting. We pulled them out and purged them as per >>>> the manual, but it didn't seem to help much. Since it sat for so long >>>> (previous owner was deployed overseas), have the lifters just died? >>>> >>>> Tim >>>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "Nighthawk Motorcycle Lovers!" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/nighthawk_lovers/UPK9KkPmNTM/unsubscribe?hl=en-US >>> . >>> To unsubscribe from this group and all its topics, send an email to >>> [email protected]. >>> >>> To post to this group, send email to [email protected]. >>> Visit this group at >>> http://groups.google.com/group/nighthawk_lovers?hl=en-US. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >>> >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Nighthawk Motorcycle Lovers!" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at >> http://groups.google.com/group/nighthawk_lovers?hl=en-US. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at > http://groups.google.com/group/nighthawk_lovers?hl=en-US. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en-US. For more options, visit https://groups.google.com/groups/opt_out.
