Page 3 of 3 FirstFirst 123
Results 21 to 25 of 25

Thread: Oil cooler for a zetec Caterham?

  1. #21
    Join Date
    Feb 2016
    Location
    Central WA
    Posts
    117

    Default

    I've been told that billet oil pump gears are important for Zetecs that are used at high rpm. Mine has them and seems to hold oil pressure well.
    2003 Birkin

  2. #22
    Join Date
    Dec 2008
    Location
    Port Angeles, WA
    Posts
    237

    Default

    Quote Originally Posted by Kitcat View Post
    Randall: Where did you get your oil pump and was it for a Zetec SVT? Parts for it seem can be hard to source.
    It was several years ago, when Zetec parts were more easily sourced. It was/is a "Ford Racing" part that I sourced from Ford Performance.

    Randall

  3. #23
    Join Date
    Aug 2008
    Location
    Iowa
    Posts
    116

    Default

    Kit at, sorry about the slow response. 30 to 40 miles is probably not enough to get a meaningful reading from a used oil analysis.

  4. #24
    Join Date
    Aug 2008
    Location
    Iowa
    Posts
    116

    Default

    Kitcat. Darned spell checker.

  5. #25
    Join Date
    Dec 2010
    Posts
    102

    Default

    Quote Originally Posted by Alfonse View Post
    I've been told that billet oil pump gears are important for Zetecs that are used at high rpm. Mine has them and seems to hold oil pressure well.
    The main reason for the billet gears is that the stock gears are made of powdered metal and can shatter. The oil pump on a Zetec (wet sump) is around the nose of the crankshaft and subjected to second order vibrations from the four cylinder. This is especially a problem if a the crank balancer (pulley) is replaced with a lightweight aluminum pulley. The front pulley on a Zetec a fairly crude harmonic balancer, but it does absorb some of the vibration that might transfer to the oil pump gears and cause a catastrophic failure.

    Interestingly enough...NA and NB Miatas can suffer the same problem....if the engines are run in the upper 7000 rpm range and up and the pulley is replaced.

    The comment about the oil pressure relief valve bears attention also. As with a lot of engines, it is a steel piston running up and down in an aluminum housing (part of the oil pump in a Zetec). The the piston sticks halfway, it can cause oil pressure to be higher than normal with cold because it doesn't release excess pressure, and lower when hot because it acts like an internal oil leak. It doesn't take much trash or gaulliing of the aluminum to cause the piston not to move up and down as it should.
    2000, 2002 Caterham 7 America
    2005 Cayenne Turbo Powerkit
    1975 2002 DTM
    Lola T596 S2

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •