"razorbeamteam" (razorbeamteam)
12/13/2018 at 21:23 • Filed to: None
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"razorbeamteam" (razorbeamteam)
12/13/2018 at 21:23 • Filed to: None | 0
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!!! UNKNOWN CONTENT TYPE !!!
So this came up for sale on the local CL and I was thinking of picking it up to rebuild and eventually swap into my RRC. The seller doesn’t know how many miles are on it, only that it had bad rod knock.
I’m thinking it would be a fun project to rebuild this thing over the winter. I’ve never done an engine swap or anything like this and I think this would be a relatively cheap way to learn.
I’m worried that I’m gonna get in over my head and end up spending a ton of money on expensive parts then blow them all up the first time I turn the key.
Is there anything I should be looking for when I go see this in person? I’m not sure there’s a way to tell if it’s a 4.0 or a 4.6 and the seller doesn’t know. The plenum is missing as well as the exhaust headers. It looks pretty leaky, but so does my 3.9.
SilentButNotReallyDeadly...killed by G/O Media
> razorbeamteam
12/13/2018 at 21:48 |
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The rod knock is probably crank bearings if my memory of this engine serves me correctly. They are an eminently rebuildable engine and there’s quite good aftermarket support for them.
Honestly, it’s probably only worth scrap value even as a practice engine and he probably should be just giving it to you.
There’s a couple of good workshop manuals out there and tearing into this one just to even diagnose the issues will learn you a lot.
adamftw
> SilentButNotReallyDeadly...killed by G/O Media
12/14/2018 at 07:01 |
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This. Running used Rover V8s are not worth much. You should be paying this guy to take it.
RamblinRover Luxury-Yacht
> razorbeamteam
12/14/2018 at 09:28 |
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Seconding others saying “the horror, the horror”, it is possible that this block has liner issues (though they’d mostly been dealt with by 2000) that would cause it to start acting like it had a blown head gasket when you rebuild it. So, it’s possible you could be new bearings, new timing chain, and other parts in (maybe even a new crank), and then find out you have block porosity next to the liner requiring a complete disassembly, retrofit with tophat liners, and boiling/sealing the block.
It’s funny, because the best way to get a *really good* RV8 is to rebuild them with improvements over stock that people often don’t do, but that’s a complicated and expensive process.
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razorbeamteam
> RamblinRover Luxury-Yacht
12/14/2018 at 13:00 |
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I’ve read about porous blocks on the larger displacement engines and liners slipping. Is getting top hats installed crazy expensive?
Ideally, I’d like an engine with fresh components that would reliable and more powerful than my worn out 3.9. I’m thinking I could even run it off of a mega squirt or other aftermarket ECM and banish all the Lucas from my life forever. At a minimum I’m thinking a mild cam and refreshed heads as well as addressing wherever bottom end issues this block has.
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RamblinRover Luxury-Yacht
> razorbeamteam
12/14/2018 at 13:07 |
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Getting top hats done properly kind of requires a whole boring setup. Cutting out the old liners, cutting an overbore relief lip into the top of every cylinder, getting the new liners, pressing them in... I don’t think it’s for the faint of heart, but there might be a local machine shop that specializes in engines that could do it. I think there are also specialists in Rover blocks that will prep a block for you, but I don’t know the details.
I have a 4.2 that I’ve been waiting on rebuilding, and whether I attempt a top
hat job depends partly on bore wear and how lucky I feel
. Tricky, because the engine successfully did 140k without liner problems, but might be too worn out to just hone the cylinders, and the process might do some jarring loose.
It’ll be going to a machine shop regardless for cross-boring the bearing caps and doing the cam bearings, so....