Can You Make Money Flipping Dirt Bikes – Part 2


So today we’re going to be taking the 2006 RMZ450 engine and to put it all back together in the previous part we tore it down. If you guys remember we took the wrist pin out of it here, you can see there’s a weld mark on it. Basically the wrist pin seized to the connecting rod so I think the engine just pretty much ran out of oil and they seized together and tore down into the bottom end and everything else well-size the crankshaft.

And the piston pin here and the piston looked to be in pretty good condition so I went ahead and ordered up everything we’re going to need to put this engine back together today and hopefully get it running. So when I rebuild this engine today what I’m going to do is I’m going to go over some of the specific intricacies of this engine.

Maybe not everything you need to know about rebuilding an engine I’m probably going to have to time-lapse a lot of it just because it’s a long process. So coming soon on the channel I do have a really detailed series on four-stroke engines that I’m going to be documenting. It’s just going to go from the teardown all the way to the assembly everything you need to know.

So if you guys want to learn how to rebuild four-stroke engines go down below hit the subscribe button and also hit that bell while you’re down there so you know when I’m posting about that. Alright, guys well that is definitely enough talking for today let’s go rebuild this engine and check out the products I went ahead and ordered. Alright, guys so if you didn’t watch the previous part here are the engine cases off of this 2006 RMZ450 that we had all tore down.

As you could see I left the bearings in the engine just because I wasn’t sure what bearings are going to come with this kit but I just got the kit in and it’s just going to be the main bearings here. Alright and you can see here on the table I have all the parts that we tore off in the last part we’re going to be putting most of these back on the engine.

And if you guys read the part 1 you’ll know I went ahead and ordered a Wiseco bottom and rebuild kit, I went with this one just because it was cheaper than any of the other options. It’s a little different than the Hot Rod’s kit which I used on the CR125 it’s going to come with less stuff. Now you can see here we have all the seals for the bottom end and then this kits it also going to come with a brand new crankshaft here from Wiseco.

So the reason why I went with this as opposed to just getting a rod and the bearings is that basically this kit worked out to be cheaper because it comes with all the OEM seals. If I went ahead and order the OEM steel separately then it would all add up to be more expensive and you can see it also comes with a set of main bearings. Okay, guys so I’m going to start off by removing these two set screws here for the crank bearing on this engine.

You can either use an impact screwdriver like this or you guys can use an impact driver like this, this is what I prefer to use I just have more feel and these bits seem to sink deeper into the set screw here so this is what I prefer to go with. Sometimes there will be Loctite on these so make sure to give them some heat if you’re having an issue. Looks like these actually had a little bit of blue Loctite on them.

Okay and as you can see with just a little heat and a hammer and a socket we were able to get this old main bearing out of here. It actually still spins pretty good doesn’t have a play but I just want to replace it since the kit came with a new one and just make sure this bike runs really good for the next owner. If any you guys happen to be rebuilding this engine on the crank bearing this line right here is going to face inwards they’re going to face in towards each other and towards the crankshaft.

Another thing you might notice if you’re doing an engine like this is the two open ends of the seal usually face towards the crankshaft like this. In this case, they’re actually are going to face towards the outside of the engine so the open side is going to face this way. I’ve seen a few other Suzukis do this as well.

Another thing you guys might notice if you’re working on a Suzuki engine is they use a gear style shifting so as long as you line these gear teeth up in the middle as I have here you should be fine with that. All you’re going to do is just when you push the foot lever you’re going up or down and that’ll move this linkage and allow you to change gears.

We are now pretty much back to where we started we have the bottom end all back together and everything seemed to go pretty smoothly. So now we’re going to throw the top end on here, to do this I got a Tusk Top End Gasket kit as well as a Pro X Piston kit. And as you guys go to install your camshafts this is a point in time when you really want to make sure you’re looking in your service manual and make sure you’re installing your camshafts correctly at top dead center.

Even just a couple notches off and you can get your valves hitting each other or the piston so you definitely want to be careful here because you can severely damage the engine. I’ll be going into depth in this when I go ahead and rebuild the engine on this channel. Alright, guys, it feels really good to have this engine back together took a lot of work to get it back together.

But as you can see it is still pretty dirty and before I put it in the bike I’m just going to give it a real quick clean up here and make sure all this aluminum is cleaned off. Alright and then we don’t want any water getting in this engine obviously so I’m going to use a set of powder coating plugs to plug the coolant inlet and outlet and our crankcase breather as well as the intake and exhaust here I’m just going to use a rag to plug those.

Since I ran out of Mag Wheel Cleaner I’m going to be using a couple of products that I got from my local auto parts store and then to finish it off I have some Mothers Aluminum Polish, this stuff works great. I’m not actually going to polish it I’m just going to use it to clean off the aluminum and it does a really good job of that.

Well, we accomplished pretty much everything we could here it feels really good to have this engine all back together and ready to hopefully run in the next part. So guys stay tuned for that we’ll get back into the nitty-gritty details of how to flip a dirt bike.

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