Unobtainium Supplies: Delrin Shift Bushings | FerrariChat

Unobtainium Supplies: Delrin Shift Bushings

Discussion in '308/328' started by Verell, Nov 2, 2007.

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  1. Verell

    Verell F1 Veteran
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    May 5, 2001
    7,017
    Groton, MA
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    Verell Boaen
    #1 Verell, Nov 2, 2007
    Last edited by a moderator: Sep 7, 2017
    A month or so ago, I was collecting tools, etc to go help a local 308 owner do a shift adjustment & change the shift bushings. He'd already bought the rubber based OEM SilentBloc bushings.

    2 of the tools I dug out were the bushing replacement tool & shift alignment tool that I bought from Kermit before he totally dropped out of sight.

    In the box with the tools was one of the Delrin shift bushings I'd bought from Kermit to replace the bushing inside the console. However, just replacing the bushing beside the engine had resolved my shifting problems so I never bothered to pull the console apart.

    Anyway, looking at the bushing I realized that with Kermit gone, they have't been available for several years. So I set out to reproduce them. Took some testing & research to figure out the exact hardness & elasticity that he'd been using, but I finally located the material in Europe.

    The picture shows 2 of the first production Unobtainium Supply Delrin Shift Bushings.

    These are far superior to the OEM rubber & metal bushings. Unlike rubber, delrin is resistant to oil, coolant, gasolene & other chemicals found in an automotive environment. It is self-lubricating, and doesn't deteriorate with engine compartment heat the way rubber does.

    Once you've installed these bushings, you should never have to replace shift bushings again!

    You'll also be surprised at how much more positive & crisp your shifts are.

    If you're interested, the price is:

    $36.90/bushing = $35.00 each + $6.90 S&I, or

    $76.90/pair of bushings = $35.00 x 2 + $6.90 S&I.

    To order, send email to:

    Orders(at)UnobtainiumSupply(dot)com
    SUBJ: ORDER: Qty n Shift Bushings


    More Unobtainium Coming late this year:

    Shift Bushing installation tool - Makes pressing the old shift bushing out & installing the new bushing as easy as using a ratchet on a nut.

    Shifter Alignment tool - Exactly centers the shifter & locks it into place while you do a shift alignment.

    Transmission Shift Alignment tool - Locks the shift forks inside the transmission into place while you do a shift alignment. It will also also permit you selectively enable one shift fork at a time to move.
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  2. ATSAaron

    ATSAaron Formula 3
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    Jun 1, 2004
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    Aaron Bunch
    Cool. I want some. Do you take paypal?

    Aaron
     
  3. Jbryant

    Jbryant Karting

    Sep 23, 2006
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    Jeff Bryant
    Same Here

    Jeff
     
    davescott10 likes this.
  4. chrismorse

    chrismorse Formula 3

    Feb 16, 2004
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    way north california
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    chris morse
    Hi Verell,

    you got mail :)
     
  5. jimshadow

    jimshadow F1 Veteran
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    Feb 19, 2006
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    No, he's got 2 mails...:)

    JIM
     
  6. Pizzaman Chris

    Pizzaman Chris F1 Rookie

    Mar 13, 2005
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    When does Verell find the time to make all these cool NLA products??
     
  7. jimshadow

    jimshadow F1 Veteran
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    Feb 19, 2006
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    JIM
    Making NLA stuff, helping locals with their 3x8 projects, posting on multiple forums....I think that he may be some sort of reincarnation of Enzo himself. Back to planet earth to help those of us who desire to keep their Ferraris driving down the road. :)
    Hats off to Verell.

    YOU DA MAN!

    JIM
     
  8. Verell

    Verell F1 Veteran
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    May 5, 2001
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    Just send PayPal payment to the orders email address. Use PayPal category [Goods(non-auction].
     
  9. Verell

    Verell F1 Veteran
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    I'll be selling the tool, it's pretty simple, just a piece of tubing a bolt, a nut, various sized washers & instructions. I think the sale price will be about the same as what I'd have to charge for a rental fee + return shipping.

    Certainly it is something you could make yourself, but I think the right size tubing & maybe one of the washers might be a PITA to locate (havent' measured them yet, so this is a SWAG). I believe people will find that when they factor in their time to chase down the various parts, & cut the tubing to length it'll be cheaper/easier to just buy it from me.

    Regards,
    Verell
     
  10. Irishman

    Irishman F1 Rookie

    Oct 13, 2005
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    Kevin
    From past searches I have seen all sorts of products and group buys.

    Do you have a catalog?
     
  11. Verell

    Verell F1 Veteran
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    Seamus,
    Thanks for asking. Yes, I have everything in a price list. Just end eMAIL to:

    Verell(at)UnobtainiumSupply(dot)com

    Everything that was a group buy is in the price list, however, a few custom machined items like the Unbreakable Lever Bezels may be out of stock until the next mfg. run. Just about everything else can normally ship in a few days.
     
  12. Verell

    Verell F1 Veteran
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    #12 Verell, Nov 5, 2007
    Last edited by a moderator: Sep 7, 2017
  13. Verell

    Verell F1 Veteran
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    May 5, 2001
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    I've started the intial production run of the shift bushing installation tools. Will publish a price as soon as I get a good handle on how long it takes to do the simple machining steps involved.
     
  14. Brunello

    Brunello Formula Junior

    Sep 10, 2005
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    Vancouver, British C
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    Al
    Verell, I appreciate the work you're doing. I ordered and received the paper weights but have still not installed them. Anyway, I'm not sure if I need these new bushings. How do you know that the originals are not in good shape or working properly? The only problem I have with my shifting is the standard second gear shift problem until she warms up. Can you please expand on the benefits again.

    Thanks

    Al
     
  15. Verell

    Verell F1 Veteran
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    The SilentBloc bushings are rubber which deteriorates over time, especially the bushing by the engine which is subject to exhaust heat & oil. The bushings can go bad in a couple of ways: The rubber can soften, eventually becoming mushy, or the rubber can become hard & brittle, eventually breaking up & falling out.

    The symptoms of degraded or failing bushings range from feeling some slight grating & loss of crispness/precision during shifting to difficulty or even inability to get into 1 or more gears. The exact gears affected are usually one or both of the outer pairs (eg: the Reverse/First pair, or the 4th/5th pair. In severe cases, it becomes very difficult to shift at all.

    The bushings return the path between the shift knob & the forks in it's transmission to it's original condition.
     
  16. Mike C

    Mike C F1 Veteran
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    #16 Mike C, Dec 2, 2007
    Last edited by a moderator: Sep 7, 2017
    Here's an example of one that needed replacing -- no amount of adjusting the shifter forks would solve the problem of not being able to find reverse gear! The inner bushing should have been centered, and the rubber solid and firm. This was indeed the one nearest the engine, as Verell mentioned (and it's a bear to get to). We replaced it with a new stock piece and the car now shifts at least as smooth as when I first got it 15 years ago... I hadn't realized how bad it had gotten over time.
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  17. Verell

    Verell F1 Veteran
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    I've run-off & kitted several shift bushing installation tool sets & a step by step bushing installation procedure. The tool can be used to remove and install either the OEM SilentBloc, or the Delrin(tm) shift bushings

    Price/tool is: $36.00 + $6.90 S&I

    The tool is an slightly improved version of the tool that Kermit was selling.
     
  18. buckminster

    buckminster Formula Junior

    Aug 18, 2005
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    This a great effort that benefits the entire community of owners - Thank you very much.
     
  19. Verell

    Verell F1 Veteran
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    YES, 328s also use the same bushing: Ferrari P/N 106814 #28 in the 328 FPC.
     
  20. Martin308GTB

    Martin308GTB F1 Rookie

    Jan 22, 2003
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    Martin N.
    let me add this one:

    or if the rubber goes bad, the inner sleeve can shift sideways causing metal-to-metal contact of the fork and shift shaft eye. The noise this causes inside the cabin is very annoying. Drove me almost nuts during a 1000mls.-drive some years ago.
    Sounds similar as if someone is permanently ringing at your front door :)

    Best Regards from Germany

    Martin
     
  21. jgmblair

    jgmblair Formula Junior
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    May 27, 2010
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    Ordered these a few weeks ago along with the install tool. Completed the job in a few hours thought I would share my insight. To anyone contemplating this upgrade do not hesitate. If putting air in your tire, mechanically speaking, is a 1/10 and dropping your engine is a 10/10, I would rate this as no more than a 2. It is a bit tight to replace the bushing at the shifter without removing the console but it can be done on a testarossa with some patience. Do not waste your time trying to make a home made extractor, just order the one Verrel offers because it works. My old bushings were shot making the gear selection a bit difficult and this has been corrected. Sorry I didn't take any pictures, but honestly you would have a hard time f*&%ing this up!

    Thanks Verrel for your ongoing ingenuity for our cars!

    Jeff
     
  22. singletrack

    singletrack F1 Veteran

    Mar 16, 2011
    5,769
    Pittsburgh, PA
    Ha! I didn't even know about this. I just ordered it and the tool - thanks!
     
  23. Verell

    Verell F1 Veteran
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    You are quite welcome!
     
  24. angelop

    angelop Rookie

    Mar 21, 2007
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    #24 angelop, Apr 7, 2014
    Last edited by a moderator: Sep 7, 2017
    After much research, concern, and fear, I finally decided to replace the bushing on my 308GT4. Using a lot of patience and unfortunately no assistant, I felt this could be done.
    I purchased the bushings and tool from Verell, knowing quite well that if I relied on my own ingenuity to make a tool, this project would never get done.
    In my emails with Verell I confirmed that the key to not screwing up, was to make sure that the shift rod in the transmission did not move once the shifter rod was unbolted.

    So following all the threads in the forum, I put the shifter into 2nd gear and removed the thru bold from the bushing at the transmission end. Using a 1/2 or 13mm box wrench on the nut side and a 1/4 drive socket and ratchet on the bold head. I carefully used the ratchet to turn the bolt while using the wrench to to both hold the nut and prevent the torgue on the ratchet from rotating the shift rod counter clockwise and losing it from the
    2nd gear finger inside the transmission. Once the bolt was removed I very carefully eased the shifter rod forward, which in effect put the shifter into the 3rd gear slot inside the car.
    Having an assistant would have made this easier, but the key is to keep the transmission
    immobile so I remained watchful and did this carefully.

    I put Verell's tool in removal order and fitted it to remove the bushing. Again I used the box wrench because the transmission rod would now move freely counter clockwise and
    it felt like it was floating in that direction.I gave it a few turns and then removed it to make sure the bushing was moving and entering the sleeve of the tool. Using the second nut under the bolt head of the tool, I made sure that the bolt head stayed out and the nut pushed against the bushing. Otherwise the bolt head will also disappear into the bushing opening and you have nothing left to grasp. I adjusted the second nut a couple of times
    as the length of the bushing when added to the shift rod means moving it more than a couple of inches.
    Installation went much smoother and the tool seemed to be the perfect dimensions. Again I used the box wrench to prevent any movement of the transmission rod. And finally with the utmost care and no assistant, the shifter rod was able to be moved from 3rd back to 2nd from beneath the car and the bushing and shaft were slowly and gently
    aligned for the nut and bolt to be put in and tightened.
    A couple of hours work on jack stands and on my back and the shifts have never felt as precise.
    Here are a couple of photo's.
    The bushing looked fine, until I removed it.
    Here is another forum photo, but not the second nut under the bold head, which is
    used to adjust the reach for pushing the bushing out.
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  25. singletrack

    singletrack F1 Veteran

    Mar 16, 2011
    5,769
    Pittsburgh, PA
    Wow! The old one was trashed! I need to tackle this soon as well. Thanks for posting pics!
     

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