 Casting Marks or Concerning cracks?, Casting Marks or Concerning cracks? Engine rebuild |
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| Tking327 |
 Nov 25 2025, 04:55 PM
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#1
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Newbie  Group: Members Posts: 25 Joined: 17-August 21 From: Denver,CO Member No.: 25,815 Region Association: Intermountain Region  |
Hello, i tore down my 1970 1.7L to rebuild it and on cleaning the grease off the top of my crankcase, i saw the attached which made me nervous.
 . These 'cracks' are located essentially all over the top of the crackcase but seem more pronounced right over the cylinder/piston entry points, and a bit more concentrated on the drivers side. Are these cause for concern or just casting marks? I can sand an area down to see how deep they go but figured i would ask first. (The engine had been running well but smoking and leaking hence the rebuild). |
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| Chad911sc |
Dec 1 2025, 10:04 AM
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Member Group: Members Posts: 293 Joined: 24-September 24 From: Florida Member No.: 28,374 Region Association: South East States |
@davep
You are absolutely correct! After watching it again, it is a 1.7, but he states that it is in fact the earliest W series made (IMG:style_emoticons/default/first.gif) |
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Posts in this topic
Tking327 Casting Marks or Concerning cracks? Nov 25 2025, 04:55 PM
Jack Standz Typical feature of the case casting process. Nov 25 2025, 05:50 PM mepstein Many threads on pelican about casting marks on eng... Nov 25 2025, 06:51 PM Puebloswatcop
Hello, i tore down my 1970 1.7L to rebuild it and... Nov 25 2025, 06:58 PM Ninja Normal.
Now, that surface you exposed, where the ... Nov 25 2025, 07:36 PM davep The easy test here is to determine if the marks ar... Nov 26 2025, 08:23 AM Tking327 Super helpful these replies make sense. Thanks for... Nov 29 2025, 09:48 AM Chad911sc Raby also says in his case comparison video that t... Nov 29 2025, 01:18 PM davep That is wrong, only one casting was being produced... Nov 29 2025, 09:51 PM Chad911sc I’m not sure how to link a video to this site, b... Dec 1 2025, 09:56 AM
Chad911sc https://youtu.be/siPS_EBLxLY?si=UnHu1rJrBZiel1wi
T... Dec 1 2025, 10:27 AM |
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