308 GT4 oil cooler system - slightly modified... | FerrariChat
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308 GT4 oil cooler system - slightly modified...

Discussion in 'Technical Q&A' started by Peter, Jul 14, 2005.

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  1. Peter

    Peter F1 Veteran
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    #1 Peter, Jul 14, 2005
    Last edited by a moderator: Sep 7, 2017
    Posted here is a brief summary of what I'm doing to my oil cooler system (to keep this topic out of another, unrelated thread).

    Recently, my oil cooler leaked again, so I've decided not to fix it this time, but to replace with new. Not with the OEM, as I do not want to deal with the odd-ball fittings, but a new one that will have common, AN/JIC 37* fittings on it, to accept readily avaliable fittings. I had new oil cooler hoses made several years ago and it took me eight weeks to get the banjo fittings! Never again.

    Here are pics of the progress so far. Currently, all I'm waiting for is the cooler (being made by a local rad shop, but using American made aluminum components/core).

    As mentioned in that other thread, Phil & Kermit raised a point about hose size, saying -10 would be too small. I checked my old, original hoses that I kept and yes, the bottom hose is -12, but, the top and longest hose is -10. Although it is of different construction, it is a genuine Ferrari hose from many years ago (as I've seen the exact same hose on other GT4's and 308's in general). Thus, I feel fine in using -10 throughout my system.

    I'll post more pictures as I progress.

    My goal is that using these common fittings (which are re-usable), I'll be able to change my hose more frequently, easily and inexpensively. The fittings are two-piece, the outer collar is threaded on to the hose (CCW), then the swivel part is threaded into that. This locks down onto the hose in two ways, creating a very strong connection, suitable for hydraulic installations (thousands of PSI pressure). The hose is Aeroquip FC350 (stainless inner wire braid with cotton cloth outer braid). The key component in this system are the 90* fittings which replace the banjos. They have on one side, the 22 x 1.5mm thread which also has a lock-nut with a sealing washer and the AN -10 thread on the other. The sealing washer is a rubber O-Ring contained in a metal outer washer to prevent crushing of the O-Ring. As you can see, it has a reasonably low stack height (compared with the banjo set-up) and just fits in the upper, oil-filter base location.
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  2. robertgarven

    robertgarven F1 Veteran
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    #2 robertgarven, Jul 14, 2005
    Peter,

    I cant approve of non OEM parts! Looks good though!

    :)

    Rob
     
  3. pma1010

    pma1010 F1 Rookie

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    #3 pma1010, Jul 15, 2005
    Peter:
    Where did you source the 90s with the AN/metric threads?
    Philip
     
  4. maurice70

    maurice70 F1 Rookie

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    #4 maurice70, Jul 15, 2005
    Petre I did this about a year ago as my cooler was also beyond repair and a genuine one was too expensive I got a off the shelf after market cooler that was just one row shorter than the original(doesn't bother me as I dont have any real intentions of tracking it)It fitted neatly in the original housing and I had some adaptors made up the fit the original hoses.The carhasn't had any oil temp or pressure problems since and I did track the car once and didn't have any problems.Good luck on your cooler
     
  5. gerritv

    gerritv Formula 3

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    #5 gerritv, Jul 15, 2005
    Hi Peter
    What Robert said, but very nice and neat solution. Classy work as always.

    Gerrit
     
  6. Matt Morgan, "Kermit"

    Matt Morgan, "Kermit" Formula Junior

    Nov 12, 2003
    405
    Ferndale, WA
    #6 Matt Morgan, "Kermit", Jul 15, 2005
    Peter,
    I recognise the fittings from another endeavor (410cu in trike), and as I recall the flow was very good.As I ponder it all I do not feel as negative towards the idea as I do not have the OEM and these fittings to test for flow capabilities (and I have had a bit more coffe.LOL). I'd say looks good, I'm sure you allready planned on monitoring it for problems so GO FOR IT!
    Of course you are aware it will cost points in Concours? (wink)
    Kermit
     
  7. miked

    miked Formula Junior

    Feb 7, 2001
    893
    Cincinnati, Ohio
    #7 miked, Jul 15, 2005
    Nice work Peter.
    We use the same type of fittings at work on hot melt glue systems (operating at 150-180C and up to 60 bar) so they won't even notice Ferrari pressures and temps even on a hot summer day.
    Our "gitter done" guys like to start the 37* nuts with a wrench which almost always results in misalignment and stripped threads. Then they really "crank" on the nut after it seats on the male fitting, a one flat of turn is all that is required. We usually use Parker brand as they are available worldwide so our overseas factories can get them locally.

    http://www.parker.com/fcg/literature/default.asp?divid=12&catid=5
     
  8. Peter

    Peter F1 Veteran
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    #8 Peter, Jul 15, 2005
    From a hydraulic supply store we - the company I work for - deal with occasionally. It is a huge place with very experienced staff. The guy didn't even look anything up in a catalogue or computer, he listened to my situation/description, walked to the back and came out with these!
     
  9. Peter

    Peter F1 Veteran
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    #9 Peter, Jul 15, 2005
    Hmmm, what brand is the cooler?
     
  10. Peter

    Peter F1 Veteran
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    #10 Peter, Jul 15, 2005
    It lost points in the concours years ago :)
     
  11. maurice70

    maurice70 F1 Rookie

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    #11 maurice70, Jul 16, 2005
    I can't remember right now but WHEN I get my car back I will have a lok at the brand.I do remember that it is an American brand and I didn't pay much for it about US$110 from a speed shop.(didn't tell them it was for a Ferrari) but the fittings that connected my original hoses to the cooler cost me about US$70.Actually I think the brand was Serck
     
  12. Peter

    Peter F1 Veteran
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    #12 Peter, Jul 16, 2005
    I've never heard of them. Could it also be Setrab (although they're Swedish, but have a large U.S. distributorship)?
     
  13. maurice70

    maurice70 F1 Rookie

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    #13 maurice70, Jul 17, 2005
    Here is the website for serck.http://www.serckservices.com/I did not get mine through them directly it was as I said a hot rod/speed shop.I brought my original cooler to them and told them it was for an old Fiat and we physically matched one up.As I said it was one row smaller and they had one that was about 5 rows larger but that wouldn't fit in the original shroud so I opted for the smaller one which I would have to say would probably be more efficient than the original being a newer design and the original also would of had 30 years worth of crud build up inside.When I get a chance to go past my mechanic I will try and take a pic of it as the engine is in pieces for its major rebuild
     
  14. Peter

    Peter F1 Veteran
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    #14 Peter, Jul 17, 2005
    Thanks...
     

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