|
|
Post by dmartin95 on Apr 27, 2015 8:13:42 GMT -5
Ok, so I'm in the middle of a build and I made a major over sight. The Build I'm currently doing is a BBK with a 4 valve head. I thought it was going to be seamless but I hit a major snag because of a dumb oversight on my part...
I recently acquired a Taiwan 4 valve head... All the writing on packaging is in Asian so I couldn't read the specs... Now, Taida has sent me a total 3, 4 valve heads and they all came with the needed accessories such as cam, studs and chain....
Well, this new Taiwan 4 valver that I acquired didn't come with a chain... Like a Dummy, I just assumed I could use my stock chain because it didn't come with one... Afterall, all my Taida kits did have a chain. So, I get the top end tore off, go to reassmble then realize my mistake. This 4 valve head does in fact require a longer chain.. I need to have a 94 (some places call it 47 link) link chain.
-----------------------
So, here's what I need help deciding....
I already have a 94 link chain that I was going to use on another build, but If I use it, I still have to buy a gasket set and split the crankcase...Might as well stroke it at that point...
My other option is to buy a chain breaker and install additional links... I avoid having to split the crankcase but have to shell out the cash for one... In addition, I don't know how to use a chain breaker and add links to an existing chain... What if I break the chain and can't get it reassembled...!?!
They both have their pro's and con's... What route would you take?
|
|
|
|
Post by keikara on Apr 27, 2015 10:11:33 GMT -5
The only issue I would see if you split the chain and then couldn't get it back together is, you now have a tool with no use and you have to split the case and replace the timing chain anyway. Have seen some videos of people doing it doesn't look to hard however if I'm not mistaking when they put the new chain on they had to weld the pin on the chain. Let me see if I can find the video I saw.
|
|
|
|
Post by keikara on Apr 27, 2015 10:27:11 GMT -5
itistheride.boards.net/thread/2748Here is a post that Alley made about this but this one doesn't split the chain don't know if it will work, still trying to find the video of the one I saw.
|
|
|
|
Post by dmartin95 on Apr 27, 2015 11:12:23 GMT -5
itistheride.boards.net/thread/2748Here is a post that Alley made about this but this one doesn't split the chain don't know if it will work, still trying to find the video of the one I saw. I found a few videos... Search youtube using Key-phrase "how to add a masterlink to a chain" and "How to break a chain" PFS has all the tools I need for doing the Job right HEREAfter watching the videos, I'm fairly confidant I can do it... But the cost of the Chain tools I could buy 4 or 5 complete gasket set... The other side of the coin I have the tool for future jobs and avoid having to split the crankcase.... Decisions, decision......  |
|
|
|
Post by keikara on Apr 27, 2015 11:39:36 GMT -5
I remember seeing a video where they showed how to do it on a 150cc motor, but haven't been able to find yet.
|
|
|
|
Post by dmartin95 on Apr 27, 2015 11:53:31 GMT -5
Yeah, I'd like to find one for a 150cc... I have to figure out what size the individual links are to buy masterlinks if I go that route...
Oh, and BTW, anything welding for me is out of the question... I don't know how to weld... Sad thing is, I have a nice welder that has hardly ever been used... It was my dads... His health took a turn for the worst and he cant use his tools any more and gave them to me... So now I have this nice welder that I do not know how to use...
|
|
|
|
Post by dmartin95 on Apr 27, 2015 13:57:59 GMT -5
Ok, well that settles that... I just talked to the guys at parts for scooters.. I was inquiring about what master-link, rivets and chain breaking tools I would need and they advised me against purchasing one. They said it weakens the strength of the chain and that I would actually be taking a step backwards in my build.... So, it looks like splitting the case open for me....
On the plus side of that, you'll be able to see a video of what's inside your new engine.....
|
|
Sophomore Rider
Currently Offline
Posts: 186
Likes: 37
Joined: Jun 13, 2013 15:39:09 GMT -5
|
Post by novaraptor on Apr 27, 2015 16:30:02 GMT -5
Have you checked around your area for belt, bearing and chain shops? Might be fairly reasonable to just have them cut what you need..
|
|
|
|
Post by dmartin95 on Apr 27, 2015 17:51:55 GMT -5
Have you checked around your area for belt, bearing and chain shops? Might be fairly reasonable to just have them cut what you need.. I would rather, attempt to chew through the block of this motor, than have someone do my work for me.  I'm just joking.... At this point it isn't about if I can do it, it's about if I should do it. The advice I got from those in the know is to not do it. |
|
|
|
Post by keikara on Apr 27, 2015 18:09:20 GMT -5
Yea I could see where the master link could be the weak link in the chain and would suck to replace that way just to have to rebuild the motor because that link broke and it eats a valve or something.
|
|
|
|
Post by murkyapricot on Apr 28, 2015 18:39:00 GMT -5
Being a bike mechanic I'm messing with chains constantly, its actually very easy, all you really have to do is see which is a male link and which is female and break it in the appropriate spot. (Male link has a pin that you push into a female link)
the biggest mistake you can make is pushing the pin out too far or even worse all the way out
if you decide to break the chain take it very slowly and keep seeing if you can pull it apart because once you go too far it's alot more work to get it back together
Also once you get the chain back together you might notice the pin that you just pushed back in will feel stuck and not as movable as all the other links. Put the breaker on the other side of that same pin and give it just a little push back out
sometimes the pins need to be wiggled a bit to loosen them back up once putting them back together
|
|
|
|
Post by dmartin95 on Apr 29, 2015 0:56:26 GMT -5
Being a bike mechanic I'm messing with chains constantly, its actually very easy, all you really have to do is see which is a male link and which is female and break it in the appropriate spot. (Male link has a pin that you push into a female link) the biggest mistake you can make is pushing the pin out too far or even worse all the way out if you decide to break the chain take it very slowly and keep seeing if you can pull it apart because once you go too far it's alot more work to get it back together Also once you get the chain back together you might notice the pin that you just pushed back in will feel stuck and not as movable as all the other links. Put the breaker on the other side of that same pin and give it just a little push back out sometimes the pins need to be wiggled a bit to loosen them back up once putting them back together Thanks for the feedback... I decided not to break the chain.... I split apart the crank halves and opened her up..... I didn't want to take the risk of creating a "weak link in the chain"... Had it been a drive chain (going from motor to rear tire) I may have considered it more seriously, but with it being part of the internals I figured it was not worth the risk, when I could buy a chain and gasket set for under $25.00 to the door. |
|
|
|
Post by murkyapricot on Apr 29, 2015 1:52:35 GMT -5
Lol yea you would spend atleast that much on a decent quality chain breaker anyway
|
|
|
|
Post by keikara on Apr 30, 2015 0:12:37 GMT -5
|
|
