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How To Install ARP Head Bolts On A Land Rover Engine
Watch Doug, our Land Rover Master Technician, install
ARP Engine Head Bolts using Kit ARP4301 on a 4.0/4.6 Engine. ARP Head Stud Kits Replacing Standard Engine Head Bolts with The ARP Engine Head Stud Set On 4.0/4.6 EnginesHi I'm Doug, your tech support representative here at Atlantic British. In this video we're going to touch base on an option you have if you're building your engine or doing head gaskets on a 4.0 / 4.6. And essentially what it is is a replacement set of studs instead of head bolts. Now you know a lot of the newer engines have the torque to yield head bolts, which you see a lot on now aluminum block, aluminum head engines. You're dealing with a high expansion and contraction rate which is why you need that style. But you find if you look, is you see a racing engine torn down, a lot of them will have studs. And studs are a little bit more secure. They cost a little bit more, but they definitely do a better job. So we're just going to give you a brief run down on what you would need to do to install the kit. Now we do stock for these. That's the ARP4301. Great kit. Comes with the studs. Comes with the nuts. And comes with the washers. So, we're going to demonstrate this on a nice new block. But you would normally do your prep work. Of course, clean out each hole, make sure your threads are clean. Run a chaser down there. Make sure they're all cleaned and lubed. With the studs though, what you're going to do is instead of putting a dab of oil on that you would normally do on the head bolts, because the studs are inserted and they're going to be stationary, you're going to take just a dab of thread lock. You can buy these at any parts center. And it just takes 1 or 2 drops. And you just want it so it locks the stud in place. Now you'll notice the nut is designed to be a 12 point. You would use a 5/8ths or a 16 millimeter 12 point socket. You want one in half inch drive so that you can torque these down once you get it together. And you'll also notice that you have a coarse thread on one side, fine thread on the other. The coarse thread obvious goes into the block. The fine thread remains up top for the nut. Now you'll also have 6 studs that will be longer than these and they are going to be in the top 3 center holes. You'll notice that when you take it apart, your head bolts. You're going to have 3 larger than the rest of them on each side. So, make sure you keep note of that when you go to put this together. So essentially all you're really going to need to do, you can do this one of two ways as far as installing it. You can run a nut down on one of the studs. We'll take a little bit of the. And just say you'll only need like a little drop. That's all it takes. We'll run the stud into the whole. And we're just going to bottom it out until it comes to the shaft of the stud so that it will stop at the point. And you'll notice that I don't even need a driver. In some cases you may. You don't need to have them real tight. You just need to snug them. And you can do that with either a stud puller or stud remover which will slide down over the stud and look like a socket. Or just use the socket itself on the nut. And that's all you really need to do. Just lock that in. We'll run the nut out. Let me get a ratchet and we'll put that on there.Reason I do that because most of your larger half inch won't go down or are not accurate at a 35 foot pound reading, where the smaller 3/8ths drive is. So we'll do the same thing as we did on the head. Basically we're going to start here. Go to this. Go to this. And go to this. And then one more time down the row just to make sure everything's squarely torqued. Alright. So here's the finished product. You can see studs in place. Nice neat appearance. Plus the fact is it's definitely a more secure set up than the torque to yield head bolts. So, this is something you might want to recommend, I would recommend that you do if you're doing a head gasket change over. Or you're doing an engine rebuild. You want to hold onto the vehicle for a while. This is the route to go. It's really worth the extra money. So when you're ready to do this to your 4.0 or 4.6 just give a call to any of our knowledgeable salesmen at 1-800-533-2210. And thanks for watching.
Applies To These Models:
Discovery I | '94-'99
Discovery Series II | '99-'04
Range Rover Classic | '87-'95
Range Rover 4.0 (P38) | '95-'02
Range Rover 4.6 (P38) | '95-'02
Defender 90 | '94-'97
Defender 110 | '93
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