DIY Bolt tightening help - Alfa Romeo 4C Forums
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post #1 of 29 (permalink) Old 04-23-2019, 11:19 AM Thread Starter
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DIY Bolt tightening help

Hey i began and just about finished the bolt tightening for my 4c coupe. I say it wasnt that bad but there are some bolts I cannot figure out how to fully access. If anyone has some tips let me know. The ones im having trouble with are...

1. The e18 size bolt at the rear subframe to tub. Ive been about to get about 4 of the 8. The ones on the driver side near the intercooler are that hardest to get. I think maybe getting a shorter e18 socket may help. Currently its an extended one. Approx 2.5 inches in length.

2. The cross member extending from the center of the engine compartment toward the rear, and then ends underneath the coolant overflow tank. There are bolts below it. 3 in a triangle and one in front. I can get the one in front but not the other 3.

3. The roll over bar? Its at the back window and going upward. I can access some of the bolts but not all. i think remove rear fenders would make these all easier but i dont want to....

any tricks or special tools that help these? The front end was not very difficult. There are a couple torx bolts on the door hinges that im not sure how to get either but the door hinges were all tightening otherwise.

Thanks in advance for the help
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post #2 of 29 (permalink) Old 04-23-2019, 12:29 PM
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@rgoldm2 how old is your 4C, how many miles are on the car and did you find any bolts that were loose or in need of tightening?
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post #3 of 29 (permalink) Old 04-23-2019, 12:32 PM
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Did you actually find any loose bolts? Wondering if this procedure is really necessary or just some BS from Alfa as some have suggested.
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Last edited by Alfanut; 04-23-2019 at 04:50 PM. Reason: Sp
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post #4 of 29 (permalink) Old 04-23-2019, 12:42 PM Thread Starter
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Yea i did find some loosening. There was a bolt at the bottom frame of the windshield that was actually loose to the touch(could spin w fingers). Otherwise i re-torqued everything to the range provided in the service manual. Id say the majority of the bolts spun some to where the wrench clicked over. I wouldn't describe them as loose though.

I think given the operating error of the torque wrench and the range given for torques in the manual, they were all fairly appropriately torqued. Now they are torqued + 5% more than they were?

ill add in something else for those thinking about doing this....its not that hard...yes im posting cause i cannot access some bolts with a torque wrench, but i can place my fingers on them so i know they arent missing or loose as described above. And from again whats said above, the bolts were all tight, so i bet so are these difficult to access ones, but im asking cause i want to check. From all the discussion and prices quote here and on other forums, it sounds like a serious feat, but its not that bad. Its just maintenance and not out of the reach of most DIY's. The hood removal was actually very straight forward....there is a great youtube video showing how its done. My wife helped me lift it off to avoid scratching it.

I embarked on this myself because we lost our local dealer. The forums probably would have scared me into having the dealer do it for more for the 1000$ price, but its needed. Id consider myself a intermediate mechanic. I've done clutch jobs on other cars myself, and can do most part replacements. There are things that sometimes i need a hand with though, or require tools i dont have. For this i needed a socket set, torque wrench, extensions (various), swivel for ratchet, and i used my battery impact for the wheels, and hood(see in video).
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post #5 of 29 (permalink) Old 04-23-2019, 12:44 PM
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Just wondering about the insurance angle of DIY bolt tightening, could it possibly allow a non payout if an accident or damage occurred in the future and no official paperwork is available for the tightening service?

Just curious.

Life is short so I bought a 4C....4C 4ever
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post #6 of 29 (permalink) Old 04-23-2019, 12:45 PM Thread Starter
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Here’s the car w hood off. I’ll add I needed a new jack to get under the car and new jack stands(I got esco ones with the rubber rope).
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post #7 of 29 (permalink) Old 04-23-2019, 12:51 PM Thread Starter
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I cant possibly imagine that the US insurance would fight that sort of thing....the warranty with alfa, im sure would but i bought my car used and its nearly out of warranty anyways, not to mention the 5-6 hours drive(400miles) to the closest dealer...Its just maintenance id state. Can your insurance take your totaled car away and not pay you cause your tires dont have proper tread? they cant here. Im not sure if MOT would suggest something different in the UK(but the US has nothing like this to ensure mechanical safety of cars in some state)

Last edited by rgoldm2; 04-23-2019 at 12:53 PM.
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post #8 of 29 (permalink) Old 04-23-2019, 12:56 PM
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Quote:
Originally Posted by Juan Camilo Roldan View Post
Did you actually found any loose bolts? Wondering if this procedure is really necessary or just some BS from Alfa as some have suggested.
This recurring procedure is not necessary as suggested from AR... my "AR racing garage" hasn't ever found any loose bolt in one of their 4Cs (they have more than 50 4C clients)... one clients 4C has more than 80tkm and he is at least 8 times a year on race tracks: no loose bolt.
So I would see this topic "relaxed"
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Last edited by urs2000; 04-23-2019 at 01:03 PM.
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post #9 of 29 (permalink) Old 04-23-2019, 01:10 PM
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Yes, in the UK having bald tyre(s) could invalidate your insurance.

Life is short so I bought a 4C....4C 4ever
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post #10 of 29 (permalink) Old 04-23-2019, 01:12 PM
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I don’t remember exactly what I used to get at those specific bolts, but I know that they all involved extensions and accessing them from underneath with the wheels and under trays removed. I wrote up more specific details back when I did mine, posted here somewhere. In that same thread I remember that someone posted some other methods at getting to a couple of them that I was planning on using when I do mine the next time.
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Last edited by Alfanut; 04-23-2019 at 04:56 PM. Reason: Sp
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