2.0 liter Engine Build

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Amskeptic
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Re: 2.0 liter Engine Build

Post by Amskeptic » Sun Feb 11, 2018 5:25 pm

Latest post of the previous page:

SlowLane wrote:
Sun Feb 11, 2018 11:49 am

You might have gotten lucky. There sure as heck wasn't sufficient clearance when I bolted (er, nutted?) the rockers onto my new AMC heads.re were on my engine.
Very likely that AMC has larger diameter stud bases. Stock German head, notta problem.
Colin
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SlowLane
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Re: 2.0 liter Engine Build

Post by SlowLane » Mon Feb 12, 2018 9:39 am

Amskeptic wrote:
Sun Feb 11, 2018 5:25 pm
SlowLane wrote:
Sun Feb 11, 2018 11:49 am

You might have gotten lucky. There sure as heck wasn't sufficient clearance when I bolted (er, nutted?) the rockers onto my new AMC heads.re were on my engine.
Very likely that AMC has larger diameter stud bases. Stock German head, notta problem.
Colin
How lucky we are then that VW had the foresight to chamfer the shaft bores in anticipation of one of their future OEMs not sticking to spec. Those thoughtful Germans...

It's just a shame that they chose to not chamfer both sides, then we wouldn't even need to have this conversation. Maybe they figured that they could give parts sales a boost by not doing so.

So, for Mr. Wild Man, and any others reading this thread for T4 engine build tid-bits: If you are tempted to flip your rocker shafts around to give the rocker arms a nice new unworn surface ro ride on: you may get away with it, But, you need to carefully measure to make sure that you can.
Should be easy enough to do. Try fitting each shaft onto the pair of studs where you are intending to put that particular shaft, non-chamfered side towards the head, without using the rocker stands. The shafts will probably be held up by the tapered shoulder(s) of the studs. Measure the gap between the shaft and the rocker mounting pad on the head and compare that to the thickness of the rocker stand at that point. If the gap is less than the amount that the rocker stand holds the shaft away from the head (plus a bit for good luck), yer good. Otherwise, resign yourself to using the worn surface of the rocker shaft. or decide whether you want to experiment with adding enough chamfer to the non-chamfered side of the shaft to give you sufficient clearance.
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Re: 2.0 liter Engine Build

Post by asiab3 » Mon Feb 12, 2018 5:17 pm

Huh… I ASSumed the chamfer was to protect the stud threads when installing the arms with the spacer spring tension… The shaft is significantly harder metal than the stud threads, and not everybody perfectly pilots their holes before pressing on…

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Re: 2.0 liter Engine Build

Post by wild man smith » Mon Feb 12, 2018 5:48 pm

27857892_10211491960283113_1865510225274980587_nbits.jpg
more clean old machinery
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Re: 2.0 liter Engine Build

Post by SlowLane » Mon Feb 12, 2018 6:49 pm

Hey you! Stop havin' so much fun. Engine buildin' is serious bidniss, dontchaknow?

Funny, but the picture of your oil filter adapter there reminds me of when I was rebuilding my engine, and I was wondering if there was an established test for the spring pressure of the filter bypass valve in the adapter. I mean, you wouldn't want it to open at too low a pressure, but then, what would be too low a pressure? That kept me awake for a couple of nights.
'81 Canadian Westfalia (2.0L, manual), now Californiated

"Wisdom comes from experience. Experience is often a result of lack of wisdom."
- Terry Pratchett

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Re: 2.0 liter Engine Build

Post by wild man smith » Mon Feb 12, 2018 11:26 pm

Beautiful day here in Porkland, Orygun. made up a curtain today from the other Brazilian Coffee bag I got from the Paper Tiger Coffee on Grand Blvd, Vantucky, Wa. Have a coffee there after taking my Daughter to school some mornings. ran a power wire to energize the coil, It will come out near the Auto Trans Dipstick area. Used that plastic round cable protector stuff. I like the "Clean" look to wiring, carryover from building Choppers I guess. Put the Float charger on my Battery. Getting as much squared away as possible b4 wifey gets surgery this Friday. About 4 weeks recovery for her. Once all bits are together and ready, assembly will go pretty quickly, everything possible will be clean, and ready to bolt together. I plan on mocking up the Dual Carb setup b4 engine install, hope to get it dialed in close. 4 page instruction , lots of bags of hardware. If I do it when the engine is on the jack, there will be more room, and I will be familiar with it when it goes together in the Engine Room. Love Working with NEW carburators, fuel lines, pump and regulator. Ringed Pistons are Cozy in their jugs, have new circlips, and the base shims on # 1, ready to install. Bagged em in gallon Ziplocks. The Lab dog usually lays on the z bed while I am working on her, does not want to be left behind, HAHA. Keep em Rolling fellas and gals............... :flower:

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