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Thread: RR P38 Idler tensioner pulley 4.6 /4.0 V8

  1. #11
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    Thumbs up Steelies

    Quote Originally Posted by p38arover View Post
    Not in the plastic idler as far as I'm aware. Was Pierre's plastic?
    No, Ron. Both idlers were steel, and I treated them like a 300tdi idler - circlip off, push it out, new one in, replace circlip; and on the smaller one - push it past the stakings, new one in and restake with centre punch.

    I'd reckon the plakkie one would be bin fodder, like GM ones.

    Pete

  2. #12
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    Thanks Pete.
    Ron B.
    VK2OTC

    2004 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



    RIP Bucko - Riding on Forever

  3. #13
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    Quote Originally Posted by Pierre View Post
    No, Ron. Both idlers were steel, and I treated them like a 300tdi idler - circlip off, push it out, new one in, replace circlip; and on the smaller one - push it past the stakings, new one in and restake with centre punch.

    Pete
    Did you have any problems with the stakings? Do they allow to be ground off and restaked in a different place?

    As far as the separete pulley goes, I had it delivered from the USA by rockauto

    There are 2 metal pulleys available as well for the tensioner sold by rockauto, under the cooling section of the car model.
    ACDELCO 36102
    GATES 36102
    Seem to allow the bearing replacement, avoiding having to buy the complete pulley

    My bearings in all pulleys were a bit on the dry side, but there was neither whine nor rumble nor play, so the seal was carefully levered out and new grease pumped in. All smooth again..

    Best regards
    Robert

  4. #14
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    Quote Originally Posted by p38arover View Post
    I bought two of them in the USA.
    The new one I fitted has gone noisy within 4,000km of installation. 'Tis a good thing I kept the one with 245,000 km on it (it's been cleaned and greased a few times).
    Ron B.
    VK2OTC

    2004 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



    RIP Bucko - Riding on Forever

  5. #15
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    dud bearing pushed out past the original staking easily.

    Pete

  6. #16
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    Coogee, South of Fremantle, WA
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    I just picked up a new tensioner pulley from Auto One. The make was Nuline, part EP027. Its Steel and cost A$36.95inc gst. (The bearing is a 6203 RS)

  7. #17
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    One should specify if the pulley is for a GEMS or Thor engine.
    Ron B.
    VK2OTC

    2004 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



    RIP Bucko - Riding on Forever

  8. #18
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    Mar 2008
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    Oh dear, I just read this thread and bought the 027 pulley. It looks ok from a quick glance.

  9. #19
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    Coogee, South of Fremantle, WA
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    I fitted the pulley today, no dramas it fits the Thor perfectly. Old pulley bearing was noisy and warn causing a slight wobble. Old pulley was plastic , new steel.
    Attached Images Attached Images

  10. #20
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    Aug 2007
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    Bearing Update

    While refitting the tensioner and idler pulleys last night I noticed that there was a deal of slack and all three bearings were "rattling" - I replaced the original plastic tensioner pulley in 2008 with a steel one -less than 30,000km ago!

    The bloke at the bearing supply place today had a couple of different grades of required bearings(1 x 6203 and 2 x 6304) in stock...recommended those with the "C3" designation. Apparently these have larger radial clearances to account for thermal expansion when running constantly at high revs in hot conditions... price was $11 for the 6203 and $22 ea for 6304. Relatively simple job to press out the old and refit the new from the steel pulleys.

    While I seemed to have been able to strip the heads off, bag and label parts etc in two - three days with usual domestic interruptions... not so the reassembly. Seems to have taken forever... hopefully I'll have it running tomorrow , or Sunday...

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