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Any under the valve cover work I should do

Discussion in 'Technical Chat' started by ashleyvh, Jun 23, 2011.

  1. Jun 23, 2011 at 7:56 PM
    #1
    ashleyvh

    ashleyvh [OP] Member

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    saraland
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    magnaflow muffler, K&N filter, MAF sensor restrictor
    Hello all. I've got a leaky valve cover on the rear passengers side of my 2006 4.0 tacoma. Is there anything else I should do while I've got the top end exposed. Another thing I was curious about. I don't have the extra cash for headers at the moment but I was contemplating hollowing out the front catalytic converters. Has anyone done this or know of possible problems I should be aware of. So far I've added a URD Y-pipe and an AFE CAI. Any suggestions would be greatly appreciated.
     
  2. Jun 23, 2011 at 8:02 PM
    #2
    whippersnapper02

    whippersnapper02 Well-Known Member

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    No other work that I can think of.

    You would lose backpressure resulting in loss of low end torque by hollowing out the cats.
     
  3. Jun 23, 2011 at 8:51 PM
    #3
    ashleyvh

    ashleyvh [OP] Member

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    if that is the case with altering the converters then whats the deal with headers. dont they reduce the back pressure even more
     
  4. Jun 23, 2011 at 8:58 PM
    #4
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Yes they do. The DTLT headers reduce low end power but really let the engine breath at the top end.
     
  5. Jun 24, 2011 at 1:10 PM
    #5
    slo13zx3

    slo13zx3 Well-Known Member

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    valve clearance check intake is 0.006-0.0010 in.(0.15-0.25 mm) exhaust 0.011-0.015 (0.29-0.39 mm) on the 1gr-fe engine
     
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