Are these 2 isolated incidences or are there more reported failures or possibly recent belt failures after majors with water pump changes?
And never used since the 348. But to be fair I raced my 348 as did every 348c racer and the single belt did not fail. I think it is a robust system in this low power application. 348 do not fail with increased frequency vs. 2 belt ferraris. But yeah could have been disaster.
Was the rear bearing on the driven shaft for the cam belt system upgraded? That's where mine failed. I believe the latest upgrade part number is 171177. See 348 Components, Table 6 - Timing - Controls, part # 3.
For those of us who are not mechanically inclined can someone tell us in English what happened so if there is anything we can do to avoid this type of disaster we can do it Mel
don't know yet. if you replace the bearing shown also replace the bearing in the timing cover as that is prone to grenade too. Hill makes a replacement. also tack the fence pullies my bet is that's what failed. Sent using FerrariChat.com mobile app
You should replace and update these when replacing the bearing. Oh and tack ypur pulley fences those are the biggest time bomb in my opinion they are pressed on. Image Unavailable, Please Login Sent using FerrariChat.com mobile app
No news yet. Tony graciously let me tow it directly to the shop even though they have a lot of projects going on. I told him since the winter is upon us, I was not in a hurry. I will update as soon as I hear anything. I definitely do not want a member of the Brotherhood to hear that noise, ever... Keep the discussion going, learning a lot. I'm leaning towards failure of a component that is not usually addressed in a belt service or major, probably something usually thought of as insignificant. However, it was definitely not the clutch/flywheel, which I was praying for... Thanks for all the engine links, def giving me an idea of what it'll cost to start. Which raises the question, would you take the current motor, strip it down and replace defective components with the donor motor parts or just go with donor motor, not really knowing anything about its history...? Seem's like more of a gamble with the latter. Thoughts?
It depends, if it just valves then rebuild heads, if it pistons it would depend whats out there at the time. If your like some folks then juts spend 30K and have a whole new engine built and dont think twice other wise like me and many others, it depends on budget, circumstance, availability, appetite etc. See what the issue is first then go from there. It all speculation till there is a diagnosis. Speaking of speculation, based on what your saying, and you suspect interference, pulley fences failure or Idler Bracket failure they can crack if pulled incorrectly is the two that I would suspect, but its just a guess and for reference and based of your description, I could be WAY off. I sure hope is nothing significant! BTW you can see the pulley fence tacked below for reference. The stupid fences are pressed on they can get flung and create ungodly havoc from being pulled and installed during service if care is not taken or what not. If its not that, when you fix it have that done.... It is the biggest time bomb I think all for the lack of a few stupid tack welds. Image Unavailable, Please Login
I did the same and had all of my fences welded on during my last major after reading about this issue on here. Image Unavailable, Please Login
