Welcome to the group Herbert and sorry to hear about bit of bad luck. You never mentioned which size Nighthawk you had but I checked with a buddy of mine who had some advice for your situation:
If he doesn't have any journal scoring, he can replace the bearing/s and be > good with it. That is such an obscure failure. Cause ? Check oil feed > first. OK ? if yes, Mike the journal. OK ? if yes, buy "black" bearings > for the engine and install. Torque the rod bolts to spec. On restart, check > for oil pressure. There is a special gauge that screws in and you can read > pressure and not depend on an idiot light. I don't know what his skill > level is but this is a deal for extreme diligence in finding cause and > determining damage. *The bottom ends of Honda motors just don't fail.* If > there is no discernible damage, there is no need to fuss around with letter > codes and bearing sizes. Use the Black bearings and Plastigauge to check > your work before final assembly. Determining reason for failure is the most > important thing. He must trace out oil feed path and insure it's open. Oil > pump MUST be opened and examined for scoring. Damage from errant metal > particles must be addressed. It's a 650? I'd be looking into the oil filter > housing for missing spring and spacer. Loss of oil pressure is indicated > here. Blocked feed ? Fouled filter ? > This is not to be taken lightly. It may have survived one failure, it > won't a second one. This requires the most careful work and scrutiny. -Kyle On Sun, Aug 3, 2014 at 8:13 PM, Herbert Humphrey <[email protected]> wrote: > Well I just bought an 83 nighthawk sweet machine garage kept and so clean > you could eat off if it !! And just my luck got it plated and about two > rides in I noticed a knock that got loud very fast .. So I stopped even > starting it ... Checked top end ..perfect .. Dropped the oil pan and full > of metal .. Number two rod bearing just fell apart seams like .. So I took > off the rod cap to confirm and yes no bearing ... Very little marking or > scoring almost no damage ( visable)... Now here is the question can I just > put a new bearing in and go or should i go over sized or new rod ... Hoping > not to tear the motor any further apart than I have to with the oil pan off > I can just get a new bearing in .. Not a lot of room in their to plasta > gage or mik it .. What should I do ??? Please help I really love this bike > > -- > 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. > For more options, visit https://groups.google.com/d/optout. > -- 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. For more options, visit https://groups.google.com/d/optout.
