2270 Build Thread Options

[McMark]

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.

[914werke]

"Crisis of Faith"?

[boxsterfan]

Been waiting on heads. I don't want to put the bottom end together until I have all the pieces. Plus I had a bit of a crisis of faith, but I've decided to at the very least finish this motor.

What heads did you go with on this 2270 build?

What are your targeted HP and Torque numbers on this motor?

[McMark]

Haven't yet. I have some rebuilt stock heads, but I'm holding out for something more interesting. (IMG:style_emoticons/default/wink.gif)

I'm looking forward to getting back to this build once my move is over.

[boxsterfan]

(IMG:style_emoticons/default/icon_bump.gif) One of my favorite threads.

[porschetub]

Thanks for jumping all over my newbie question. I just wondered. I'm new to these cars, not new to Porsches. It's eye opening to say the least.

I won't ask any more questions, ever.

Jeez you got flamed Lawrence ,not sure why,not like your question wasn't unreasonable......

[sixnotfour]

interesting , I posted an engine add on Samba for 2500 and some replies are they did not think their 914 was worth 2500......

http://www.914world.com/bbs2/index.php?showtopic=279118

[cgnj]

Think I have said this a few times now, but check out the later 2.1 Vanagon throttle body. 50mm, bolts to the 1.8 plenum, and has a few other neat things about it. You just want to massage out the opening on the plenum a bit to match the larger size. Intake runners on the 1.8 are the largest stock diameter you can get (same as the 2.0 914 setup)

Hi,
You need to explain this to me. I just measured the volume of a 2.1 liter vanadon plenum and a 2.0 porsche plenum. Volumes are not even close. Additionally, for a 2270 the minimum throttle body size is 58 MM. Not going to fit on a vanagon tb. I just measured and mocked this up this afternoon. Tell me why your experience is different than mine.

Carlos

[JamesM]

Think I have said this a few times now, but check out the later 2.1 Vanagon throttle body. 50mm, bolts to the 1.8 plenum, and has a few other neat things about it. You just want to massage out the opening on the plenum a bit to match the larger size. Intake runners on the 1.8 are the largest stock diameter you can get (same as the 2.0 914 setup)

Hi,
You need to explain this to me. I just measured the volume of a 2.1 liter vanadon plenum and a 2.0 porsche plenum. Volumes are not even close. Additionally, for a 2270 the minimum throttle body size is 58 MM. Not going to fit on a vanagon tb. I just measured and mocked this up this afternoon. Tell me why your experience is different than mine.

Carlos

What do i need to explain here? My experience is different than yours in that i have experience. This is the setup I have been running on my autox car for the last 3 years, it works great, To be clear though I never said anything about a Vanagon plenum, I am using the 1.8 plenum which is actually even smaller. Also to be clear I am running this on 2056, but its a 2056 that spends a good deal of of time above 6k RPM. Is it theoretically perfect, no, but no off the shelf parts are going to be. In fact even going fully custom you might have a hard time getting to theoretically perfect just due to the engine layout. It does work extremely well though and is simple to put together.

I am curious as to how you came to the conclusion that a 58mm throttle body is the MINIMUM for a 2270. Theoretical calculations as well as real world experience tells me this is on the upper side of where you would want to be unless your looking to build a max power high revving 2270, in which case you might as well be running ITBs anyways as the throttle body is not going to be your limiting factor.

Depending on what sort of motor you are building, best throttle control for a 2270 is most likely going to be somewhere between a 47-52mm throttle body.

[McMark]

(IMG:style_emoticons/default/icon_bump.gif) One of my favorite threads.

Thanks! I'm itching to get back to it. I may have changed the path this engine build will take though. I'm working on a lot of little projects that may end up in this build as a prototype. (IMG:style_emoticons/default/happy11.gif)

[BeatNavy]

(IMG:style_emoticons/default/icon_bump.gif) One of my favorite threads.

(IMG:style_emoticons/default/agree.gif) I've been patiently waiting for McMark to take it up again, but I'm sure he's had maybe one or two other little things to do since putting this on pause.

[flmont]

Plus,. too many questions,..Let McMark,..get thru the build at least,..then start with the questions,..it would take him months to answer every Question as he tries to explain the build,..just a thought..