Author Topic: Thoughts on CB350 chain(cam) setups...  (Read 1708 times)

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Offline SClay115

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Thoughts on CB350 chain(cam) setups...
« on: August 19, 2007, 06:42:24 AM »
I'm trying to decide what I really need for tensioning my cam chain in my engine. I know Todd Henning and others have that delrin slider for the tension side. But do I really need it? I'm going to end up just putting some OEM replacement pistons in the engine, nothing crazy. And I have since learned one can get all the original Honda parts, the roller wheels and such, and it would cost about 40 bucks less than the delrin setup. But is it work it to just go to the delrin slider? Anybody have any thoughts?

Steve

Offline Raul CB750K1

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Re: Thoughts on CB350 chain(cam) setups...
« Reply #1 on: August 19, 2007, 04:05:12 PM »
I don't know, 40 bucks doesn't seem much compared with the work to remove and open an engine. But also, the roller should last longer than the rigns, so you should probably have to open the engine to do some piston work before the roller gets worn, so it's up to you.

The strenght of a link is that of the weakest link, so just find out which part of the engine would last shorter. Making things last longer than it is a waste of money, as you should have to open the engine when the weakest link fails.


Raul

Offline SClay115

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Re: Thoughts on CB350 chain(cam) setups...
« Reply #2 on: August 20, 2007, 04:22:52 AM »
I don't know, 40 bucks doesn't seem much compared with the work to remove and open an engine. But also, the roller should last longer than the rigns, so you should probably have to open the engine to do some piston work before the roller gets worn, so it's up to you.

The strenght of a link is that of the weakest link, so just find out which part of the engine would last shorter. Making things last longer than it is a waste of money, as you should have to open the engine when the weakest link fails.


Raul

That's a good point. But I honestly don't know enough about both setups as far as longevity to make a decisions based on those facts. What I do know is that the delrin type looks much simpler and 'looks' like it would last longer. But then again, the roller type...Honda used them for some reason I'm sure of it, and I bet it was because they last. If I was say, building a hot 13:1 engine with a monster cam that I have to rev the heck out of, I think I'd go with the delrin, but for me, I think I'm just going to stick OEM, not only because it will work, but because I can still get it, but for who knows how long.

Steve

Offline Raul CB750K1

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Re: Thoughts on CB350 chain(cam) setups...
« Reply #3 on: August 20, 2007, 08:49:33 AM »
Tell you what, when I bought my CB350 twin tensioner setup, I was unpleasantly surprised that the roller alone costed about 40 euro!!!! Well, I've said here many times that I pay willingly to a company that still sells me spares after 35 years. But furthermore, I presume the material of the rubber is not simple rubber.

True, you have to pay 50 cents or even 2 bucks for a bolt alone, but have you seen how specials those bolts are? You get the list of measures to the hardware shop and when they see "M6 x 32", "M5 x 43", they just tell you: "sorry, I only have them in 5 mm increments". So you have to buy the next longer and cut it yourself, or put the shorter one and discard those two additional mm of bolt thread. But you get your part number with you and you get the right bolt at the right measure, not to mention the "pan", the part at the bolt head that is not threaded so not to ruin the cases. If you are lucky you can buy a longer one that has the same pan lenght, and cut it at your desired lenght, but the time and cost exceeds the cost of the Honda part. I've been charged more to chrome some bolts than the price of a new bolt!!!! and the same goes to the blinkers!!!!


I replaced the case bolts but only to have allen heads. ¿The rest? Honda OEM except some zinc plated washers that you can get by the bulk, or the split pins. Even the nuts are different. They have the same thread, but not the same size. So you can tear down the whole bike with a 10, 12, 14 and 17 wrench. That is not standard for M6 or M8.


Seriously, if you tear down a whole Honda bike and you rebuilt it, you can't help but notice how well thought every single aspect of those bikes were. Some of them were flawed or suffered from early teething, but they were very quick to react. As an example, the chain problem in the early 750's was sorted out less than one year after the bike went into production.


Raul

Offline crazypj

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Re: Thoughts on CB350 chain(cam) setups...
« Reply #4 on: August 22, 2007, 12:41:23 PM »
I don't think the extra for a race tensioner is actually worth it.
The original Teflon tensioner actually wore out pretty quick, Delrin is harder than Teflon but not as 'slippery'
 The Honda stock parts may have less inertia so wear better at 'normal' rpm.
PJ
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Offline CBGBs

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Re: Thoughts on CB350 chain(cam) setups...
« Reply #5 on: August 27, 2007, 05:53:02 PM »
 I've got the slipper unit in my 350 and I don't particularly care for it. I bought it because at the time it seemed nearly the same cost and I thought with it's heavy duty nature that it may be a better route. The install was a bit of a bear I heard from the mechanic and I've since taken the head off and am not convinced it's really working properly.

A Honda mechanic and CB350 racer told me that he does not like them. Its really designed for hard racing, not street.
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