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What to replace after blown engine

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Old Jul 28, 2020 | 01:02 AM
  #1  
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What to replace after blown engine

Hey guys I'm in the middle of an engine rebuild after a broken crankshaft which left heaps of metal shavings in my pan

My plan is to:
1. replace water pump, oil pump, oil cooler, oil pan - including pick-up and return line
2. hot wash block, replace all internals (rods, pistons, crank)
3. hot wash head, reuse most of valvetrain including cams, springs, retainers etc (replacing stem seals of course)

I will be re-using most of the supporting mods (PTE6466, injectors, manifolds, intercooler etc) but I'm paranoid about what I can and can't reuse.
- Do i have to replace all the oil lines for the turbo?
- is the turbo safe to reuse?
- do the injectors need to be cleaned out as they'll be sitting in the garage while this engine is being rebuilt for several weeks..
- can I reuse my kiggly oil pressure reg, oil thermostat? - I'm not very mechanically inclined but I've read that anywhere the engine oil touches should be cleaned or replaced after a broken crank/bearing failure

As background I have an evo 9, previously running a 2.3 stroker which will be rebuilt to a 2.2 stroker with 86mm bore running a precision 6466 on straight E85.

Thanks in advance, any input is appreciated
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Old Jul 28, 2020 | 06:57 AM
  #2  
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Your current plans are a good start. To add to them- the cams and cam journals will need to be inspected, and possibly be polished, but that isn't a big deal. I would send the turbo in to be gone through/inspected/possibly rebuilt. The injectors, yes, send them out for cleaning now, and then you can just leave them in packaging they come back in until the engine is ready. The turbo feed and drains are easy enough to hose out with brake cleaner/solvent, no need to replace them. The OEM oil filter housing can be disassembled (removed the thermostat and pressure regulator) and properly cleaned so no need to replace that.

If on tear down you find a bunch of metal up in the head; I would remove the baffles from the valve cover to make sure those areas get thoroughly cleaned. The Kiggly HLA is easily cleaned. Since you're looking at replacing the oil pan, I would contact Race Fab about there baffled/oversized oil pan. Your car will be making enough power to need it.
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Old Jul 28, 2020 | 07:28 AM
  #3  
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Originally Posted by letsgetthisdone
Your current plans are a good start. To add to them- the cams and cam journals will need to be inspected, and possibly be polished, but that isn't a big deal. I would send the turbo in to be gone through/inspected/possibly rebuilt. The injectors, yes, send them out for cleaning now, and then you can just leave them in packaging they come back in until the engine is ready. The turbo feed and drains are easy enough to hose out with brake cleaner/solvent, no need to replace them. The OEM oil filter housing can be disassembled (removed the thermostat and pressure regulator) and properly cleaned so no need to replace that.

If on tear down you find a bunch of metal up in the head; I would remove the baffles from the valve cover to make sure those areas get thoroughly cleaned. The Kiggly HLA is easily cleaned. Since you're looking at replacing the oil pan, I would contact Race Fab about there baffled/oversized oil pan. Your car will be making enough power to need it.
Thanks for taking the time to reply - My head will be inspected and worked on by the machine shop so hopefully they will have a look at the cams etc.
I will give a good washout to the oil pressure reg/thermostat/valve cover/turbo lines and get the injectors cleaned professionally
I've already ordered an OEM pan but will pair it with the tomei baffle/scraper kit for now - my injectors are only ID1700x atm so I won't really be maxing the turbo out anyway. My builder had a play with the turbo and think's it should be fine - is there any risk in just seeing if it works without opening it up/rebuilding?
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Old Jul 28, 2020 | 09:32 AM
  #4  
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Can you give more details on how you broke the crank? If you dont want to clutter this thread maybe start a new one.
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