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Hornet1998 |
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Hornet1998 Derestricted Danger
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Rogerborg |
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Rogerborg nimbA
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Posted: 14:58 - 16 May 2018 Post subject: |
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If it's a ticking and increasing with revs, the first thing I'd check is that you don't have a leak or hole at or near the exhaust manifold.
If it's more like a rattle, the 90s CBR and Hornet engines had a reputation for dud CCTs, so that would be my 2nd choice.
Third, when were the last time the valve clearances were checked and adjusted, if ever? Not likely, they should tighten up rather than slackening off, but I'm throwing it out there to win Internets points on the off-chance.
Got a video? ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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Hornet1998 |
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Hornet1998 Derestricted Danger
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doggone |
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doggone World Chat Champion
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Hornet1998 |
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Hornet1998 Derestricted Danger
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
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Rogerborg |
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Rogerborg nimbA
Joined: 26 Oct 2010 Karma :
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Posted: 17:59 - 16 May 2018 Post subject: |
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That sounds like the exhaust to me, at least on crappy laptop speakers. You'd think you'd notice a pinhole starting and enlarging, but you can get a whole section weaken and blow out surprisingly quickly.
If you even suspect that it's the exhaust, I'd start feeding PlusGas or another unseizing product (not WD-40) onto the studs ASAP. ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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RhynoCZ |
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RhynoCZ Super Spammer
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Hornet1998 |
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Hornet1998 Derestricted Danger
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Rogerborg |
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Rogerborg nimbA
Joined: 26 Oct 2010 Karma :
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Posted: 20:44 - 16 May 2018 Post subject: |
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It's possible, although I've never seen (or heard it). Either way, get those studs lubed. ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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Islander |
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Islander World Chat Champion
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Courier265 |
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Courier265 World Chat Champion
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Hornet1998 |
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Hornet1998 Derestricted Danger
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Rogerborg |
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Rogerborg nimbA
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RhynoCZ |
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RhynoCZ Super Spammer
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Posted: 14:25 - 17 May 2018 Post subject: |
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Rogerborg wrote: | It's possible, although I've never seen (or heard it). Either way, get those studs lubed. |
I must ask, although we now know OP's going to take the headers off, why would you lubricate the studs? Unless you take off the nuts and get some grease in the threads there's no need for lubricating the studs, for the purpose of preservation and/or future (in several months, years) removal of the headers. Whatever you spray or smear on the studs while the headers and nuts are on, won't help anything, as it will burn away and/or wash off, and the nuts are going to rust to the studs regardless. ____________________ '87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor |
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Rogerborg |
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Rogerborg nimbA
Joined: 26 Oct 2010 Karma :
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Posted: 14:59 - 17 May 2018 Post subject: |
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Lube was a poor choice of words. Unseizing liquid or spray, onto whatever bits are going to have to rotate to get the headers off.
Copper grease and brass nuts when they go back on. ____________________ Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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RhynoCZ |
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RhynoCZ Super Spammer
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bacon |
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bacon World Chat Champion
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Hornet1998 |
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Hornet1998 Derestricted Danger
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Old Thread Alert!
The last post was made 5 years, 339 days ago. Instead of replying here, would creating a new thread be more useful? |
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