Wanted - Wanted 355F1 power unit | FerrariChat

Wanted Wanted 355F1 power unit

Discussion in 'Ferrari Parts & Collectibles' started by Steve355F1, Jul 19, 2018.

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  1. Steve355F1

    Steve355F1 F1 World Champ
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    Wanted power unit for 355F1.
    This is usually referred to as part no. 177686

    Please note I am only interested in purchasing either the whole thing as per the picture, OR just one solenoid (the EV1 solenoid) that forms part of the whole.
    The solenoid is the only part of mine that has actually failed.

    I am aware of some places advertising for sale “part no.177686” but it is only the basic body and does not include the solenoids etc. A bit dodgy in my view but there you go.



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  2. Dave rocks

    Dave rocks F1 World Champ
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    Steve - contact Ferrparts. I know they are breaking an F1 now.
     
  3. Steve355F1

    Steve355F1 F1 World Champ
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    Thanks Dave. I’ll get in touch.
    I’ve found one at Eurospares which sounds promising but want to see what else is available too.

    Can you believe all this trouble I’ve had over more than a year apparently comes down to one solenoid, which is unobtainable on its own?!

    Ridiculous!!
     
  4. Qavion

    Qavion F1 World Champ
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    #4 Qavion, Jul 19, 2018
    Last edited: Jul 19, 2018
    (EDIT: entered in error)
     
  5. taz355

    taz355 F1 Veteran
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    Just curious Steve how many clicks on the unit
     
  6. Qavion

    Qavion F1 World Champ
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    Aussie Ferrari Spotters Thread??

    Surely there must be someone who rebuilds these things? It's just an electromagnetic coil driving a piston. The hard part would probably be getting into the case. I don't believe there are any fluids circulating in the case, so sealing wouldn't be an issue.
     
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  7. Qavion

    Qavion F1 World Champ
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    Did your mechanics try cleaning it?

    Here's a similar application:

     
  8. Steve355F1

    Steve355F1 F1 World Champ
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    My car has 28,000 miles Grant
     
  9. Steve355F1

    Steve355F1 F1 World Champ
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    Ian the solenoid has been tested and it actually works in the basic sense.
    However, there must be something wrong with it (can it go out of adjustment?), as the fault follows that particular solenoid.

    No one seems to know if it is possible or how to re-adjust it.

    The most frustrating thing is that you can buy these solenoids for every other F1 model and they are, of course, pretty cheap.
    But you can’t buy them for the 355F1. Ferrari (and others) will only sell you the complete power unit.
     
  10. taz355

    taz355 F1 Veteran
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    Mines getting there hope you find a hetter solution than just buying a used one.

    I will keep an eye out for you though
     
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  11. Qavion

    Qavion F1 World Champ
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    Is the problem intermittent? Is it worse when the car is warmed up? The solenoid may work on the bench at low temperatures, but it may be jamming as the temperatures get higher. If there is varnish on the components, as suggested in the videos, it may be reducing the clearances. Also, vibration and heat may be affecting the (soldered?) internal components. As suggested on the 348/355 forum, there may be a dry solder joint. Perhaps someone knows if there is more than just an electromagnetic coil inside the unit (electronics-wise)? Does the return action rely on hydraulic pressure or do they all have springs (which can get tired or partially break).

    Can you see if there is a way of getting into the unit other than by cutting into the case? Some solenoids appear to have metal tabs on the case keeping the plastic components in place. Would you have any photos of the ends rather than of the sides?

    Have you tried the Technical Forum? Sometimes the folks there have information we "stooges" simply don't have access to. Perhaps they know if you can swap components from the other type of F1 solenoid (which appears to be readily available).
     
  12. Steve355F1

    Steve355F1 F1 World Champ
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    #12 Steve355F1, Jul 20, 2018
    Last edited: Jul 20, 2018
    Thanks Ian.

    The problem is intermittent. However it has happened hot, cold and everything in between. The car has also gone many many dozens of gearchanges without any symptoms and then suddenly it happens again.
    I’ve lost count of the number of times I’ve got the car back from having the problem “fixed” only for it to re-appear a few days later.
    I’ve replaced many, many components along the way (at significant expense).

    Several months ago an error message showed up which appears to follow this particular solenoid.
    ie. We have moved this solenoid from the EV1 position to the EV2 position and the error followed it.
    We removed the solenoid and sent it to an expert who tested it and found it “works” but of course it’s obviously not working properly all the time. It is a sealed unit as far as I can tell and the only way in would be to cut it.

    I find it utterly ridiculous that I can buy a brand new F1 power unit for a five figure sum (bearing in mind the new unit has at least five new solenoids in it) but apparently I cannot buy just the solenoid from anywhere in the world. Trust me, I’ve tried.
    Any other model Ferrari the solenoid is an easily obtainable, cheap part.

    I’m at the point now where I just can’t see another way out, and I’m frankly sick of trying “maybe” solutions. I just want my car back.
    If, by buying a second hand working power unit I solve the problem and then have some spares as well I’m prepared to just do it.
    As long as the price is fair, of course.
    What I can’t do is pay $13k for a new unit when all I really need is a $200 part.

    I have wondered if a solenoid from another model would work but I doubt it.
    I’ve also wondered whether we could just install an entire power unit from a 360F1 as these are plentiful and relatively cheap but again I doubt it.
    Surely someone would have suggested that by now if it were possible.

    The perfect situation would be to find someone who would very generously “lend” me a solenoid from a 355F1 so we could install it and drive and test it for a little while to see if that did indeed fix the problem. Unfortunately we haven’t been able to find anyone quite that generous!
     
  13. Qavion

    Qavion F1 World Champ
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    I find it baffling that no one else has had this problem.

    The construction is a mystery, too. The case looks really solid. Surely they can't have pressed the end of the case into shape to stop the plastic parts falling out? Perhaps the plastic bits are just held in by some small rivets. Looking at photographs of the electrical plug on the other types, I can see two shiny metal parts adjacent to the pins. Perhaps these are rivets?

    Anyway, if you give up on the old unit, I'm sure you'll get plenty of volunteers to pull apart that faulty solenoid to see what's inside. Perhaps someone can lathe the case off, rewind the coil and silver solder (?) the case back on. Just needs someone with the right skill set. Captain Z did it with the suspension actuators.. Surely some enterprising person can do it with these solenoids.
     
  14. Steve355F1

    Steve355F1 F1 World Champ
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    I’ve now ordered a second hand power unit.

    If it fixes the problem I’d be happy to send the original offending solenoid to you, Ian, and if a better fix can be found hopefully someone else doesn’t have to go through this ridiculous situation in the future!
     
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  15. Dave rocks

    Dave rocks F1 World Champ
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    Steve, I know you think that lack of individual parts or sub components is ridiculous but there are reasons. All of these sub-assemblies are produced by sub-contractors. The OEM (Ferrari), does not purchase the parts individually and that is in part why they are not available. Yes, it can be painful but it's just the reality of manufacturing. As discussed in other threads related to your car's issue(s), I'd be willing to bet this part can be repaired. When you get the new, (pre owned unit), I'd suggest only taking the part off you need and not swapping the entire power unit as you may introduce more problems. Best of luck resolving this.
     
  16. Steve355F1

    Steve355F1 F1 World Champ
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    Thanks Dave. That’s precisely what I’m going to do - simply take the solenoid off the “new” unit and attach it to my existing one which is still in the car. I’ll hang on to the rest of it as spare parts.
    Ultimately, I’ve taken a hit here, having replaced many parts which were supposedly the problem only to discover that they weren’t, so my main motivation now is to - obviously - get my car going but also hopefully help other people in the future.

    If Ian (or anyone else) can find a way to repair these solenoids then that’s good news for everyone.
     
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  17. Dave rocks

    Dave rocks F1 World Champ
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    Steve, I might be interested in the balance of the parts. If you are interested, let me know.
     
  18. taz355

    taz355 F1 Veteran
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    Unfortunately we are all destined for this failure at some point.
     
  19. Maranello550

    Maranello550 F1 World Champ
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    Hopefully this will sort the car Steve......In the meantime I am sure someone will find an after market long term solution.....
     
  20. Steve355F1

    Steve355F1 F1 World Champ
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    Thanks Dave, but I think I’d be wise to hang on to it all as spares!

    Thanks Gary. Let’s hope so!
    My research did show that this has happened before to other 355F1 owners, but it is rare.
    It’d be nice if we could just find an aftermarket solenoid that would do the job.
     
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  21. Maranello550

    Maranello550 F1 World Champ
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    Fingers and legs crossed mate.....
     
  22. Jon Von Bon

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    I bought a complete F1 system from front to back so as to have a complete back up spare set. Most anything can be remanufactured and/or repaired these days but I wouldn't want to be down my F1 for weeks while waiting for repair. Also, some of these parts may never become available again so better to invest now.
     
  23. Steve355F1

    Steve355F1 F1 World Champ
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    Is there any technical reason why you couldn’t replace the F1 power unit with a 360 one?
    These seem plentiful and are less than a quarter of the price of a 355F1 unit.
     
  24. Dave rocks

    Dave rocks F1 World Champ
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    While they are similar systems, Steve, there are many differences at the component level.
     
  25. taz355

    taz355 F1 Veteran
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    You can do anything it just takes time, money, and usually both.
    Is it bolt in, nit as far as I know.
    Would need to do Some testing to figure it out but in theory I think it is possible.
     
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