2.7 case guru, save/scrap |
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2.7 case guru, save/scrap |
930cabman |
Feb 20 2021, 07:41 AM
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#1
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Advanced Member Group: Members Posts: 3,000 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States |
We are attempting fitting a 2.7 into our 1974 rustout hulk but have come across another hurtle. I have had a 2.7 kicking around for awhile and "assumed" we could go through it with new bearings/rings/..... and have a nice power plant. Not so quick there. The head stud issue is well known and I recently found when the magnesium cases are disassembled the crankshaft bores no longer return to a round/aligned condition.
I want to believe someone out there can get these magnesium cases in serviceable condition with good crank bores and good head stud bores. thanks |
gereed75 |
Feb 20 2021, 08:52 PM
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#2
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Senior Member Group: Members Posts: 1,240 Joined: 19-March 13 From: Pittsburgh PA Member No.: 15,674 Region Association: North East States |
Sorry that you had bad luck with the first and second mag cases. Not sure why that would be the case haha. There are plenty of sound mag cases available that can be built into perfectly reliable motors. 2.7 is pushing the limit in the cylinder spigot bore area in mag cases, but again, good unmolested cases are out there - $1500 - $2000 should get you a set. Between Karl Hens and Henry Schmidt you should have 50 or so to chose from
If I was building something to last 200,000 miles, make 225+ hp, and last the next 50 years, I would hunt down a 3.X aluminum case motor. If I want a fun build 2.2 - 2.7 that will last my lifetime of recreational use, a machined mag case, fully case saved, works just fine. If I needed the ultimate small bore badass motor, break out the check book, find an early aluminum case and build away (as Mep suggested). It is a matter of what will make you happy. My narrow body, mag cased 2.4 street toy makes me very happy. Not really worried that the cases will fail anytime soon. |
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