308 GTS/B heater blower mounts are junk | FerrariChat

308 GTS/B heater blower mounts are junk

Discussion in '308/328' started by chris_columbia, Dec 18, 2009.

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  1. chris_columbia

    chris_columbia Formula Junior
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    #1 chris_columbia, Dec 18, 2009
    Last edited by a moderator: Sep 7, 2017
    These are such a bad design. I assume every 308 has had the mounts fail by now at least once. You've got these heavy blowers cantilevered on two thin plastic tabs. Unfortunately, you can't even tell when they fail unless you look down into the front two outer radiator vents and know what you are looking for. If you see the blower laying on its side when you look into either vent (use a flashlight), it has broken, and is sliding around when you drive.

    Here is my cheap fix. The sheet aluminum distributes the load over a large area of the plastic blower housing. The four mounting bolts use large washers to avoid stressing the brittle plastic. The two empty holes in the sheet aluminum mount to the car frame like the plastic tabs did. If you don't have a metal saw, you could pick up some sheet metal and tin snips at the hardware store. I used .06 aluminum, but with tin snipes you would have to go thinner.

    The alternative is to buy new replacements, which I'm sure will fail again.
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  2. Newman

    Newman F1 World Champ
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    Looks like a solid fix, my worn out 308 had no issues with the blower motor housings at all, not even a crack. Has your car been hit in the past?
     
  3. AZDoug

    AZDoug Formula 3

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    #3 AZDoug, Dec 18, 2009
    Last edited: Dec 18, 2009
    My car has never been hit and both blowers are laying on their sides on the bottom pan. Laying there since about 1987.

    When I open up the front area this spring, a mount similar to what is pictured will be fabricated.

    Doug
     
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  4. CliffBeer

    CliffBeer Formula 3

    Apr 3, 2005
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    That's a very cool fix - nice job Chris! I bet there are loads of 308s with this same problem. I'll be checking mine tomorrow sometime....

    Thanks!
     
  5. f308jack

    f308jack F1 Rookie

    Jun 7, 2007
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    I did the exact same thing on mine; mounts had broken on both motors.

    Used some Q-bond to glue the small parts back and used same to glue the re-inforced parts on. The Q-bond also allowed to build up the area behind the brackets a little more. Solid as a rock.

    Funny, mine also had a white and a black impellor. Do all of them?
     
  6. Newman

    Newman F1 World Champ
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    Yes they have one black one white blade because the fans are mirror images of each other and turn opposite directions. Probably to help ID left from right fan on the assembly line.

    I notice the cars with broken mounts so far are from hotter climates, probably makes the plastic brittle. Mine has been in Canada since new and its anything but hot up here most of the time.
     
  7. airdelroy

    airdelroy Formula Junior

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    #7 airdelroy, Dec 19, 2009
    Last edited by a moderator: Sep 7, 2017
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  8. Newman

    Newman F1 World Champ
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    Understatement of the year, nice fabrication though.
     
  9. chris_columbia

    chris_columbia Formula Junior
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    Wow, Aaron, that looks much cleaner than mine. I assume you must have done it on CNC.

    I think they fail more from shock than temperature. If you really babied your car, and never hit a pothole, they would never fail. However, hit a few potholes, railroad tracks, speed bumps, etc, and they will be sitting on the bottom of the front valance.
     
  10. hanknum

    hanknum Formula 3

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    Very nice Aaron. Did you happen to make any extras?
     
  11. Doc

    Doc Formula Junior

    Sep 13, 2001
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    Wow--nice job! I had the same issue with my old '85 308 . I just bolted 2 metal tabs onto mine to hold them in place. I gotta say, your set-up is super! Maybe you should make a few sets and sell them
     
  12. airdelroy

    airdelroy Formula Junior

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    I did not make extras, but if there is enough interest I can see about getting some made.

    Aaron
     
  13. LarryS

    LarryS Formula Junior

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    #13 LarryS, Dec 20, 2009
    Last edited by a moderator: Sep 7, 2017
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  14. Tifosi1

    Tifosi1 Formula 3

    Feb 17, 2002
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    I used tie wraps.
     
  15. Newman

    Newman F1 World Champ
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    Nice touch.
     
  16. Newman

    Newman F1 World Champ
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    At the risk of getting flamed to death, im going to say that although there are some pretty solid repairs done here, the approach taken is to avoid fixing it right by replacing the part. Its things like this (and tie wraps) that depress the value of 308's. 308 owners dont or wont fix them properly so a potential buyer down the road is left with a selection of 308s littered with personal touches and Macgyver type repairs. I didnt check availability of the housings and I bet they are not $40 each but im sure there are some in stock either new or used. Like I said about mine, they were perfect and if they were broken I would have replaced them like any other part that breaks from age or use. I proved that a properly repaired 308 is worth big money (relatively speaking) so if you guys want your 308 retain its value (or increase in value) you're going to have to spend money on it, sad but true.

    Flame away!
     
  17. spiderseeker

    spiderseeker Formula 3

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    #18 spiderseeker, Dec 21, 2009
    Last edited: Dec 21, 2009
    * Mine look identical to yours, except I painted them flat black to be less noticeable., I didn't want to leave the problem to the next owner, by just replacing them. Mine, like yours, should be a permanent fix. I'm glad to see similar solutions by other owners. It's like the fuseblocks, just replacing them, doesn't solve the problem.
     
  18. airdelroy

    airdelroy Formula Junior

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    It really depends on how you define fix. It seems to me that the original part was poorly designed. And that just replacing it will leave it broken again in the future. Thus still leaving a future owner with the exact same cost. I have fixed it in such a way that it should not need to be fixed again. However, it is now not original and has been "southern engineered" (I live in Texas, I can say that. :) )

    If they have redesigned that part I would be willing to spend the money to fix it. Otherwise I think its just a waste.

    Aaron
     
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  19. Newman

    Newman F1 World Champ
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    I think if the plastic part lasted almost 30 years a replacement will do the same. Mine lasted 30+ years and continues onto the next owner. Speaking as a buyer that doesnt mind spending to get an excellent example, I would pass on any 308 that had that type of approach to repairs even if its better than OEM. I know im talking to a brick wall here because im preaching to the DIYer's that see my perspective as wrong and I understand that but I know im not alone in my thinking (maybe alone in voicing it here though). As crappy as the OEM door pin switches are for example, I paid up to get the correct looking ones rather than the NAPA special. Its the details that can make the difference between being able to sell the car or not in most cases.
     
  20. hanknum

    hanknum Formula 3

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    +1

    To each his own...I guess. If something is better then it is better, regardless if it is OEM or not. I'm an engineer and if there is a better solution than stock then I will definitely consider it...sorry Enzo.
     
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  21. chris_columbia

    chris_columbia Formula Junior
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    I think it depends a lot on the car. A perfect, or close to perfect 308 would make sense to keep original blowers on.

    Many cars here are drivers. Mine included. I want it to be the best driver it can be without negatively effecting the appearance. You can't see this part under normal circumstances. If I sell my car to a collector, I will let them know about this change. I bought a not-perfect 308, because I didn't want the worry everytime someone breaths on it.

    My car is nearing 100K, and I think most people looking for a higher mileage 308 will appreciate a blower not falling down, original or not.

    I also don't see how very many people can claim that they have unbroken original blowers. How do you know? Have you owned the the car 25-35 years? I'm not saying it's impossible, but there has to be some doubt.

    I love the 308. Always have, aways will, but it has some known flaws. This blower is one of them.
     
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  22. 455Fosbery

    455Fosbery Karting

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    #23 455Fosbery, Jun 11, 2016
    Last edited by a moderator: Sep 7, 2017
    Reading this thread (and others), I thought, "Nah... mine are OK"...

    Well, I took a torch (AKA 'flashlight') and had a look through the louvers behind the headlights and, lo and behold, both of the heater blowers were buggered!

    Had a think about this and tried a couple of variations before the final mod. Here's what I did:

    1. Epoxy'd original shards (tabs that broke off) back together
    2. Shaped metal support bits with 5mm holes drilled, aligned with original mounting holes, drilled additional holes in plastic.
    3. Shaped one washer to fit the location that was somewhat constricted on the inside (wanted more than just a bolt head on the inside)
    4. Cut Al material which would act to filter out bugs/debris
    5. Assembled as pictured...

    Comments/Tips:

    - I wanted something that could be easily put back to original (so simply remove two bolts in each blower, take all the bits off, and you've only got two holes to plug)
    - Thought the extra filtration at the blower inlet would be a good idea...
    - In disassembling the blower housing, there are 6 clips that need to be removed: Try wedging a small eyeglass repair screwdriver (which I typically use for everything but glasses!) in the under-side of the clip from one side and it will ease out without damage to the plastic.
    - The photos were taken before I tightened everything up. I plan to remove the original washers that were there that the mounting screws went through as they are too thick.

    Best,

    John.
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  23. scowman

    scowman F1 Rookie

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    +1
     
  24. 27811

    27811 Karting

    Jun 24, 2019
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    I need these! Both blowers working great. One is lying on it's side on the floor pan. Did anyone make a tracing/pattern of the fab'd piece. I suppose I could draw one up but didn't to reinvent the wheel. I even already have the rivets and rivet gun ready to go.

    Beautifully done.
     

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