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/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Johns' cam chain pin size /cgi-bin/YaBB.pl?num=1239301273 Message started by aliassmith on 04/09/09 at 11:21:13 |
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Title: Johns' cam chain pin size Post by aliassmith on 04/09/09 at 11:21:13 About a year or so ago I bought one of Johns' cam chains for the day when I would need one. Well that day has come. How ever, when I stretched them side by side for measuring, I noticed that on Johns' chain the pins seem to be a smaller diameter. Have any of you noticed this? Does Johns' chain last any more miles than the stock one? Or vice versa? I went ahead and put it in anyway since the other was worn to almost the max allowable. Aliassmith |
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Title: Re: Johns' cam chain pin size Post by verslagen1 on 04/09/09 at 11:27:08 Haven't measured the stock chain or the new one, but I think the stock chain is riveted in place. No one puts enough miles in a year to wear out a chain. |
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Title: Re: Johns' cam chain pin size Post by Phelonius on 04/10/09 at 09:22:52 Quote No one puts enough miles in a year to wear out a chain.[/quote] Surprize! Wrong answer Phelonius |
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Title: Re: Johns' cam chain pin size Post by Dj12midnit on 04/10/09 at 10:22:30 I put on 8000 last year and that was just going to work. |
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Title: Re: Johns' cam chain pin size Post by verslagen1 on 04/10/09 at 11:15:14 774F424B48494E5254270 wrote:
Surprize! Wrong answer Phelonius[/quote] keeping secrets? :-? |
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Title: Re: Johns' cam chain pin size Post by T Mack 1 on 04/10/09 at 11:58:41 283B2C2D323F393B306F5E0 wrote:
keeping secrets? :-?[/quote] I think Beatduck did ........ ;) |
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Title: Re: Johns' cam chain pin size Post by Phelonius on 04/12/09 at 09:46:28 No, not keeping secrets. I put 15 tousand on the first year then swapped engines with a new one and put another 15 thousand on the second year. I am now rebuilding the first engine so that I will be ready to engage this years riding season with a fresh engine again. If I ever get another new engine, or a new S-40 again, I will be tempted to open it up and measure how much the adjuster protrudes in an unused engine just to have a datum point to guestimate the life of the chain unit by comparing it with the measurements I have taken after 15,000 miles on the engines I already have. I have such an admiration for this model engine, I have no desire to buy some other brand or model. I sort of like the idea of staying with it and seeing just how dependable I can make it. As you all know, this engine is destined to become a cult classic like the 650 verticle twin Yamaha did. While not as powerful as the Yamaha, it gets better milage and I think has better ridability like a wider torque band and less vibration. Phelonius |
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Title: Re: Johns' cam chain pin size Post by verslagen1 on 04/12/09 at 09:57:41 So I was correct in my 1st statement "No one puts enough miles in a year to wear out a chain." 15k is not enough to wear out a chain or to stretch it beyond factory spec. You may exceed the 18mm plunger extension, but that's not factory and indicates the guides are worn. |
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Title: Re: Johns' cam chain pin size Post by ralfyguy on 04/12/09 at 10:56:13 I bought my '06 last year with 3,000 miles on it. I opened it up, because it was leaking oil through the clutch cover gasket near the front bottom cylinder nut behind the oil filler cap. The plunger was extended 18mm then. I am almost positive that NEW isn't gonna be any less. |
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Title: Re: Johns' cam chain pin size Post by aliassmith on 04/13/09 at 09:52:10 150611100F0204060D52630 wrote:
I don't say mine was worn out, but it did measure enough wear that I didn't want to start another summer season with it. My opinion is that if you try to get maximum wear from it you are risking catastrophic problems. I do not wish to be near Toad Suck Arkansas, where there is probably no motorsickle help, when it happens. At my age, I value my riding season greatly and really do not want to waste it doing repairs that could be prevented. Since I had the engine apart for the cylinder enlargement anyway, I removed the cam chain and measured the wear, compared it to the new chain and opted to use the new chain. Not only am I ahead in maintainence, but it has improved my understanding of cam chain wear. Aliassmith |
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Title: Re: Johns' cam chain pin size Post by diamond jim on 04/13/09 at 10:26:26 24292C243636282C312D450 wrote:
What's wrong with Toad Suck, AR? The local mechanic is fully healed following his hernia surgery, the combo gas station + video rental store just expanded and they got a new Hyosung dealer in town. They uh... well... uh... Nah, you're right. Don't wanna get stuck there either. |
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Title: Re: Johns' cam chain pin size Post by aliassmith on 04/13/09 at 10:38:05 363B333F3D3C36383B3F520 wrote:
What's wrong with Toad Suck, AR? The local mechanic is fully healed following his hernia surgery, the combo gas station + video rental store just expanded and they got a new Hyosung dealer in town. They uh... well... uh... Nah, you're right. Don't wanna get stuck there either. [/quote] I am my own mechanic but how would I get parts when the UPS truck can't find the place or is afraid to go there? Aliassmith |
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Title: Re: Johns' cam chain pin size Post by matt on 04/13/09 at 11:12:26 Hello Everyone, I am Matt, i am new to this forum, just have been reading posts for now. I am also new to motorcycles, i keep hearing horror stories about the cam chain and got me curious about it :-? I looked through past posts but can only find out they blow up :o or get to stretched and can Casue knocking. i do hear a knock after a while of riding, but not sure where it comes from, i will try upping to the 93 octane to see if it is that at all. Whats the deal with this problem? and what does the performance chain do differently, What is this verlsavy i keep seeing refered to in posts? What is upgrading the cams, and what does that do? Any info or sites that might enlighten me would be appreciated. Thanks all! Matt H PS Sorry for all the noob questions! im the type who is always very curious about how and why things work and for the bike i can only get so much from reading the clymers. Purchased 2002 Savage with 7700 mi few weeks ago ;D ;D One of the greatest days of my life, so far.. ;) |
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Title: Re: Johns' cam chain pin size Post by verslagen1 on 04/13/09 at 11:31:37 welcome to the club. Most likely, a valve adjustment will solve your knocking problem. info on the verslavy can be found in the marketplace. info on checking the cam chain adjuster can be found in the tect section. I used to say someone with less than 10k doesn't need to worry about the cam chain problem. But I've just learned about one with 1300 miles that the plunger is extended 16mm. 18mm is the recommended fix limit (replace chain and guides) You can go to about 22mm before the plunger falls out and causes damage. |
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Title: Re: Johns' cam chain pin size Post by Bobbert on 04/13/09 at 11:46:52 515D4848540D0D040B3C0 wrote:
Someone correct me if Im wrong but I dont think that's a good idea. |
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Title: Re: Johns' cam chain pin size Post by verslagen1 on 04/13/09 at 13:36:08 300D000710160D0F0D07620 wrote:
Someone correct me if Im wrong but I dont think that's a good idea. [/quote] Unless it's a problem with pre-ignition it's not effective. But it won't hurt anything except your pocket book. :o |
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