- 650 triumph motorcycle engine rebuild how to#
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You're going to find some play on the rods this way. The other thing you can check before you take your rods off is you can pull on your rod this way and see if there's any play and there shouldn't be because this is a precision fit here. If it wears it down and you take these off and you see a kind of a copper color on there, it was definitely time for a rebuild. Now in a high-mileage motor, what happens is this bearing surface that rides on there spinning round and round, round and round and round she goes down the road you go 80 miles an hour all day long, it's going to wear that surface out. After you get your rods off, as you want to take a look at your journals. Okay, came off like this, so I'm going to flip it over and I'm going to write out on this rod as well. Once again, pull that carefully to take that off of there. I'm going to pay attention when I take this one off and I'm going to mark this side of the rod out because it's going to face out when it goes back together. We'll go ahead and take the other one off and then we'll take a look at the journals on the crank and see what condition those are in. I'm going to put my nuts back on here too. I see there is no markings on this, so that means it may not have been a part before. See that? They're generally marked if they're oversize, I'm sorry, undersized because basically when you take these off of here and then there's also another one here.įor you guys that work on small-block Chevy's plant, it's called a plain bearing. Right here's your plain bearing that rides on your crank. Now, I’ll show you the plain bearings here that are going to get replaced. Just going to wiggle it, wiggle it, jiggle it a little bit and there you go. Once you get the bolts off of there - I mean, sorry, the nuts. That denotes to me that this rod came from this journal on this crank with this side facing out. What I’ll normally do is I’ll just clean off that portion of it and since my sludge trap is facing up, I'm going to write ST and then I'm going to write out. The other thing I like to do because I want to make sure that when I put this motor back together that this particular rod ends up in the same place on the crank and facing the same direction. Now, what I always like to do on my rods - some people put punch marks on them to denote which cap goes to which rod, it's imperative that the caps stay with the rod they came off of. That's because my vise has a knurling on it for gripping things and we don't really want to be gripping the crankshaft or the bearing rides now, do we? Next thing we're going to do, we're going to go ahead and grab a quarter inch Whitworth socket and take these off. You also may notice I have some aluminum soft jaws in my vise. The reason I'm doing that is because the sludge trap plug is on the other side. Next thing we're going to do is we're going to take the rods off. You have your three quarter inch wrench and look at her, she's coming right off of there. Make sure both your bolts are threaded in the same amount so this is pulling evenly. Pretty simple stuff, nothing complicated. Then, you can get your other bolt in there. You don't want to go shoving the tool down in the - where there's some threads. We're going to start a bolt in one side of it and then we're going to pin a penny on the end of the crank because you want to always protect your crank. Then, we have one of these types of polars. I'm just going to open that up, get it underneath the bearing, I'm going to tighten these down and that's probably good enough for what we're doing. I believe, there's a special factory tool. We have a couple of pullers here we're going to use for that. We've got a couple things we got to do here like this pesky bearing that's very tight on there.
Okay, we got some subassemblies to deal with on our motor teardown, we're going to work on the crankshaft now.
650 triumph motorcycle engine rebuild full#
You can read a full transcription of this video below:
Click here to subscribe to the Lowbrow Customs YouTube channel and stay in the know! We spend a lot of time and effort creating motorcycle how-to videos, product reviews and event coverage for your enjoyment, please let us know what you think. You can check out the Triumph 650 Motorcycle Engine Disassembly & Rebuild - Part 7 to continue following along!Ĭheck out the Lowbrow Customs YouTube channel to check out all of our videos.
650 triumph motorcycle engine rebuild how to#
Todd also disassembles rocker boxes along with valve removal, showing you what to look for and how to know when certain parts need replaced. Todd takes us step-by-step through some sub disassemblies including, removing the crankshaft bearings, rods, and the dreaded sludge trap tube. Triumph motorcycle engine and rebuilds it.
650 triumph motorcycle engine rebuild series#
This is the sixth part (check out part five here) in our extremely popular video series in which Todd Muller, Head Motorcycle Tech here at Lowbrow Customs, disassembles a unit 650 c.c.
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