New Mahle piston rings gap for 5.0 S4.
#1
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I'm in the process of re assembling my 5.0 engine, and now in the process of inserting the pistons, I'm using brand new rings from Mahle and I just test-fitted the first compression ring, the gap was right at 13 thou (0.33 mm), is that the correct gap for a stock cat 1 pistons? .. I searched all over the forum and also the WSM but can't find any indication of the factory ring gaps.
#3
Former Vendor
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Ring information also on this thread:
https://rennlist.com/forums/928-foru...ad-gasket.html
Starting about post 105, although the entire thread is worth the time to read>
https://rennlist.com/forums/928-foru...ad-gasket.html
Starting about post 105, although the entire thread is worth the time to read>
#4
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thanks guys, that was exactly what I was looking for. one more thing that I need to know more about : Can I re-use the lower case nuts by adding loctite and torque them to specs? .. I know the new nuts come with a dap of loctite already applied to them, so I thought what if I just applied 271 loctite to the old ones.
#5
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Nope, all hardware connecting the 2 halves of the block and the rod nuts are all 1 time use unless you want to revisit that part of the engine in short order
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GregBBRD (04-21-2023)
#6
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WSM explicitly states Rod Nuts are one time use only.
Nuts and Bolts for the block/girdle/heads can be re-used. There is a specific mention of not oiling the head bolts and washers when torque is applied, but nothing about changing them for new items every time the engine is split...
#7
Former Vendor
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Workshop Manual. Page 13-5. Items #4 and #7. "Always replace".
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#8
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Yep, it seems I have to replace them with new, I ordered a new set from Rosepassion and they are on the way to me hopefully in a couple of days. Thanks guys!