2270 Build Thread |
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2270 Build Thread |
McMark |
Feb 4 2014, 12:00 PM
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#21
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
I'm building this 2270 and I thought this would be a good one to document. I'm going to try and cover every little aspect of the build, although I'm not necessarily going to break down every process into a step by step.
I'm starting with a 1.7 'W' case. I did a quick line bore check and it's a nice STD case. But more on that later when I actually measure the line bore accurately. Case Preparation - In this section I'm covering all the modifications and inspections to be done on the bare case. Threaded Gallery Plugs, Resurface Oil Filter Mount I used my slide hammer setup to pull the original gallery plugs. I'm just doing the 'normal five'. In this picture also shows the oil filter mount face - I pull the studs and true the surface up to ensure a good, leak-free seal. HV Oil Pump I have a Schadek oil pump that I've cut in half to mark the case for 'port matching' the oil pump. The ports on the case are smaller than the oil pump, so this simply eases the transition. I use a carbide cutter for aluminum in a pneumatic die grinder to carefully open up the holes. Cleaning Stud Threads I chased all the M8x1.25 studs on the case. This eases installation, but also ensures more accurate torque. Any fastener that has a specific torque value should have clean threads. The rust/dirt/sealant/etc on the surface will make the fastener harder to turn, which means you're getting a slightly false torque reading. You'll see the head studs have all been removed. I don't use a tap or die to clean the head stud or the case threads because I've seen this result in loose head studs. I don't touch this parts of the case, and I use a wire wheel on the bench top grinder to clean the threads without risk of removing material. |
McMark |
Feb 4 2014, 11:15 PM
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#22
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Hi Mark, How do you true up the surface for the oil filter mount, without distorting the surface? What are you using? I'm going to follow this thread, intently, as I have my engine apart and would like to do the same build. Flat steel bar with sticky back 320g sandpaper (available at a paint shop). They're usually not far out, so you don't have to work hard. Just give it a few light passes until the pattern is equal. Super excited about this thread! (IMG:style_emoticons/default/popcorn[1].gif) BTW - for those of us out of the loop, which are the "normal five" plugs? Three behind the flywheel. Two next to the oil filter console (see pic above). is there a decent way to shore up the sump bracket....the one that breaks if you torque it too much?? Don't torque it too much. Seems like a smart ass answer, but really it's not an issue unless you're doing it wrong. You should use a rethreading die not a cutting die to chase the threads. Using a cutting die will make the threads loose. True. I need to get a set of those. Since I don't have them is why I don't touch the important fasteners (i.e. my comment about head studs). |
shuie |
Mar 24 2014, 06:23 AM
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#23
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Member Group: Members Posts: 352 Joined: 17-May 04 From: baton rouge, la Member No.: 2,075 |
You should use a rethreading die not a cutting die to chase the threads. Using a cutting die will make the threads loose. True. I need to get a set of those. Since I don't have them is why I don't touch the important fasteners (i.e. my comment about head studs). You can also take an old stud and cut slots into it to make a thread chaser. |
McMark |
Mar 24 2014, 10:22 AM
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#24
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
You should use a rethreading die not a cutting die to chase the threads. Using a cutting die will make the threads loose. True. I need to get a set of those. Since I don't have them is why I don't touch the important fasteners (i.e. my comment about head studs). |
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