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plenum

  1. Drain holes in air plenum?

    Range Rover Mark II / P38
    I am heading into my P38 fresh air intake plenum at the base of the windscrean this weekend to replace the filter but moslty to try and fix the source of water running into both side of my foot wells. The plenum filter is goone and it looks like there is a lot of pine needles in there. I am...
  2. GEMS Plenum on Bosch Engine?

    Range Rover Mark II / P38
    Oh Lawdy-Loo, my head gasket finally went. Who woulda thought! Obviously I still love the luxury and capability of my Rangie so I have no intention of scrapping it but dont have the funds to rebuild with top-hats. I've come across a 4.6 Thor with 98k miles that seems like a viable replacement...
  3. BTR9548 Plenum Filter alternative

    Range Rover Mark II / P38
    Anyone else having problems with this part? I replaced my old filter about 10 months ago and the new, genuine, replacement is already breaking up. Has anyone found a more robust and suitable replacement material? I was thinking of a fine mesh or tougher foam(if anything exists)
  4. Lets play name that red thing on my intake plenum

    Range Rover Mark II / P38
    I performed a cigar test on my 1999 HSE the other day and noticed smoke coming out of this red ringed plug doohickey on my intake plenum. I am not sure how to remove it and not even sure what to call it which makes searching for a replacement part difficult. Thanks for the help!
  5. plenum box water drains

    Range Rover Mark II / P38
    Hi, could anyone tell me if there are any water drains in the heater plenum box, if so where are they situated, and where do the outlet pipes run, do they join the sunroof drains, and empty behind the front wheel? If these are blocked, could this cause water to get into the footwell? Iv'e looked...
  6. P38 Plenum chamber

    Range Rover Mark II / P38
    Hi all, I have recently installed a new camshaft / 16 lifters(NEW) / Cam/crank sprocket, and a new chain, plus new oil pump gear assembly. My car is a P38A 1997 4.6 HSE V8. Everything went well and the car starts and sounds great, only thing i have noticed is, on the Plenum...
  7. Plenum chamber cover.

    Range Rover Mark II / P38
    Hi everyone Ive just bought a 1997 4.6 HSE with 140000 miles on the clock. All seems to be running ok, but the plenum chamber cover says it's from a 4.0. My question is, is there any differance between the cover for the 4.0 and 4.6. Thanks Wally
  8. Plenum filter replacement

    Range Rover Mark II / P38
    I replaced my mostly disintegrated plenum filter this weekend, and followed the excellent instructions on rr.net. However we encountered a problem where someone in the factory had been a little over zealous with the windscreen sealant. The result was that both the windscreen bottom trim and...
  9. Plenum Bleed and Feed Pipes?

    Range Rover Mark II / P38
    Hi all, I am currently rebuilding my heads on my GEMS 4.6 motor and during the dismantling process I managed to break the brittle plastic plenum chamber bleed pipe which goes between the plenum chamber and the expansion tank. I have been trying to find a replacement pipe but am having no luck...
  10. Plenum filter substitute

    Range Rover Mark II / P38
    Fed up with replacing my filter every 18 months or so and rejecting foam as it may be too water absorbent I have use thin charcoal impregnated material which is sold as cooker hood universal filter replacement. Its jet black so it looks good, allows a good air flow as it is designed to, lasts...
  11. Air hose from MAF to plenum

    Range Rover Mark II / P38
    On my dualfuel enginge one of "chambers " hanging under the hose is cot off making room for the LPG injectors The sealing of the hole is dodgy and i wonder if i just can replace it with a another sort of hose What do this "chambers" do?
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