Let's try to avoid any new problems. Before assembling this project, remove all the top end stuff (no switchies of parts please) and take the time to fill each port (intake, exhaust) with gasoline or something like it. No water. Check to see if it takes at least 6 seconds for it to seep out of the closed valves. Redo any that fail. (re-lap in) Save yourself some grief. Do it now or redo it later. That's the go /no go for a valve job. Do 'em one at a time. I suspect the salver cut the chain to sell the head assembly. Bottom end or transmission probably failed. Happy wrenching
--- On Sat, 8/29/09, Creative Residential Designs <[email protected]> wrote: From: Creative Residential Designs <[email protected]> Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain tensioner parts - difficulty finding To: [email protected] Date: Saturday, August 29, 2009, 5:54 PM It's a complete top end including everything clear up to cam cover and cam cover bolts.....minus the chain...SIGH! It's all assembled too. Well, a girls gotta go what a girls gotta do. It all looks real good though and all of the cam cover bolts are in good shape too. They said it came off of a good running bike just one week prior. For $36.00 off of e-bay, not bad. HotrodMamma. ----- Original Message ----- From: Dennis Hammerl To: [email protected] Sent: Saturday, August 29, 2009 3:19 PM Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain tensioner parts - difficulty finding How much of the head is assembled ? Did you get with cams and all ? --- On Sat, 8/29/09, Creative Residential Designs <[email protected]> wrote: From: Creative Residential Designs <[email protected]> Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain tensioner parts - difficulty finding To: [email protected] Date: Saturday, August 29, 2009, 11:24 AM I was afraid of that. We'll, I'll just have to disassemble the top end to get that chain on. Thanks Dennis. ----- Original Message ----- From: Dennis Hammerl To: [email protected] Sent: Friday, August 28, 2009 8:47 PM Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain tensioner parts - difficulty finding NO. There is no master link on an endless chain (loop or whatever you want to call it) To remove a cam chain from a Honda the crankshaft must be removed. I have written a detailed set of instructions for this job. --- On Fri, 8/28/09, Creative Residential Designs <[email protected]> wrote: From: Creative Residential Designs <[email protected]> Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain tensioner parts - difficulty finding To: [email protected] Date: Friday, August 28, 2009, 7:24 PM No choice...The guy sold the one that was on that top end...is there a master link? That was one thing I was going to ask you. ----- Original Message ----- From: Dennis Hammerl To: [email protected] Sent: Friday, August 28, 2009 1:14 PM Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain tensioner parts - difficulty finding You are going to use the chain on your bike ? It's a loop chain and held in with the crankshaft. --- On Fri, 8/28/09, Creative Residential Designs <[email protected]> wrote: From: Creative Residential Designs <[email protected]> Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain tensioner parts - difficulty finding To: [email protected] Date: Friday, August 28, 2009, 12:09 PM Thanks for the info Dennis. I'll be putting my "new" top end on next week. I bought it minus the chain so I needed to know this. I agree on using a torque wrench too. I've made that mistake, I.E. breaking a bolt and it SUCKS. I love my bike but these Japanese bolts just aren't as strong as good ol' American steel. Paul...don't fret too much, just pay close attention, do what Dennis says and get 'er done! If you have any doubts take photos as you go. If you want to see what I've done on my Nighthawks or Harley go to the Photobucket site and type in "HotrodMamma". I'm going to cut some gaskets for my Nighthawk soon and will post a how-to. The cam cover gaskets are hard to get and expensive. I can make one for $4.00 plus my time. I'm going to keep a pattern for later too. HotrodMamma. ----- Original Message ----- From: Dennis Hammerl To: [email protected] Sent: Thursday, August 27, 2009 11:09 PM Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain tensioner parts - difficulty finding Get a grip. Not all parts are updated at the same time. Without my asking a counter person to check, I recall that there is only one update spring and a couple of updates to the tensioner assy. You do or do not have the OEM manual ? Not Clymers book of the dead or some such. Please take the time to read the common service manual. All specific manuals are based on the viewer having done this. Cam sprockets are marked with lines that are to be in line with the head surface. Study the manual before disassembly and take pix if needed. Do not play switch with any parts. Replace each part (tappet adjusters, cam followers, cam journal caps, etc) in the EXACT place it came from. Lay parts out in an orderly fashion in a place that will not be disturbed by kids or pets. Do not introduce any new variables by a careless assembly. A light dab of grease on the cam lobes willl do,a drop or two of oil on each journal. Fill anti-foam chambers with oil. Before replacing the head cover, remove the plugs (should be out already) and spin the engine over with the starter. Repeat in short bursts untill oil is seen flowing. You want tips ? Here's one. Some tech's have called me over because the cam chain isn't long enough... duh. It did fit. What happens is that it "drops" a link under the crankshaft. You will need to rotate the crank a bit while holding the chain up and it will straighten out. The possibility exists that you are a he-man. Use a torque wrench on ALL fasteners. It's way too easy to strip the 6mm bolts that used throughout. Start each one with fingers to make sure you don't strip any. Specs are in the front section on the manual. Service bulletins from that time are all on paper. Where ours got to after all these years may be a chore to locate. Rob may have taken them when he left. Just stop fretting about all this and be glad you can get parts. The original (questionable) parts have disappeared. ONLY updated parts are available. Honda bought back those many years ago. I lied. I've only got 37 years with Honda. 42 total. First with Suzuki and Yamaha. Wanna' "degree in" the cams ? Makes 'em fly. Advanced procedure, but big performance boost. --- On Thu, 8/27/09, oldschoolgwin <[email protected]> wrote: From: oldschoolgwin <[email protected]> Subject: [Nighthawk Lovers] Re: 83 cb650sc cam chain tensioner parts - difficulty finding To: "Nighthawk Motorcycle Lovers!" <[email protected]> Date: Thursday, August 27, 2009, 11:39 PM Thanks Dennis. Do you suspect the -010 tensioner bracket had the modifications that "improved" the tensioner from the original? Do you now of a technical service bulletin addressing the repair of the failure. I think this may be valuable to those of us with less historical experience with the NH tensioner (42 years at Honda - wow that's more knowledge than i can imagine). I tried to find a TSB on the web but no luck. Well i found a NOS spring (14514-ME5-010) at a Honda shop in Ohio - it should be here in a few days - at that time i'll remove the tensioner and measure spring force between the two springs (maybe that will prove hopefull if there is a large difference). It doesn't sound too difficult when reading the OEM manual but a bet they leave a lot of the little tricks out. I guess just think everything well through before you do it. I think I'll take a picture of the cam sprocket allignment marks (with #1 at TDC compression) before the removal to ensure it is reset the same after intall (that part makes me a bit nervous!). The OEM manual was a bit unclear of what cam mark alligns with what part of the head surface. And I won't swap positions on any components. Thanks, Paul Aug 26, 2:51 pm, Dennis Hammerl <[email protected]> wrote: > Part sequence is .000 original, 010 first mod, 020 second mod. > > --- On Wed, 8/26/09, oldschoolgwin <[email protected]> wrote: > > From: oldschoolgwin <[email protected]> > Subject: [Nighthawk Lovers] 83 cb650sc cam chain tensioner parts - difficulty finding > To: "Nighthawk Motorcycle Lovers!" <[email protected]> > Date: Wednesday, August 26, 2009, 3:18 PM > > Does anyone know where i can get the spring and tensioner bracket > from, most places show them on the part finder but they are not in > stocka and no longer made (at least by Honda). > > Spring: 14514-me5-010 > Bracket Tensioner: 14500-ME5-030 > > I found a NOS bracket tensioner on Ebay but it is a -010. So it went -. > 01, -020, and the last is -030. I don't know if the -010 part is the > original with the problems that required the upgrade to the next part > revision > > At minimum I need the tensioner spring or there isn't much reason to > take the bike apart. Yikes - no way to solve the chain rattle? > > Thanks for the help. > > Paul --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en -~----------~----~----~----~------~----~------~--~---
