Jump to content

pathfounder

Members
  • Posts

    287
  • Joined

  • Last visited

  • Days Won

    2

pathfounder last won the day on June 19 2012

pathfounder had the most liked content!

Previous Fields

  • Your Pathfinder Info
    97 Pathfinder 4WD auto. 31 inch tires, LSD, lots of bondo.
  • Mechanical Skill Level
    Standalone Tool Chest Mechanic
  • Your Age
    22-29
  • What do you consider yourself?
    Rarely Go Off-Road
  • Model
    Klondike
  • Year
    1997

Contact Methods

  • Website URL
    http://craig.backfire.ca/

Profile Information

  • Gender
    Male
  • Location
    Ottawa
  • Country
    Canada
  • Interests
    Computers and engineering, in the opposite order.

Recent Profile Visitors

3,543 profile views

pathfounder's Achievements

NPORA Fulltime Resident

NPORA Fulltime Resident (4/5)

15

Reputation

  1. Bad MAF won't always throw codes (if it is simply reading 0 for a moment).
  2. I had a problem after changing my timing belt on my 1995 Accord. There are two belts and two tensioner pullies, one for the camshaft, and another for two balance shafts. The latter's tensioner pulley was bad, and made the engine sound like I put a small supercharger on it. I removed that belt and now the noise is gone. Long story short: your new pulley is probably crap.
  3. From the link: """Regardless of what adjustment is used, the engine must be rotated by hand after installation to verify that the valves do not contact the pistons. Failure to do this is a recipe for a costly disaster.""" This is true, but I don't think 'turning it by hand' is an adequate test. It's possible for the valves to only touch the pistons at high RPM when the piston, rod and valves are stretching ever so slightly (a couple thousandths). It's enough contact that the valves will slowly work-harden the pistons, which could cause them to shatter. I would imagine that there was a lot left on the table in the making of the VG33 and that your perceived power gains are real.
  4. I didn't say that a 29% increase in wall area means a 29% decrease in overall fluid flow, but to say that the wall friction doesn't matter is completely wrong. Anything that moves past anything else will encounter resistance. If you look at velocity profiles of pipes, the velocity is always greatest in the centre, and slowest at the wall.
  5. It's not possible to compare the areas of the pipes to compare the flow rate. There is friction along the walls of the pipes, and a single 2.5" pipe has way less wall area (29%) than two 1.75" pipes. The diameter of the primary pipes is very sensitive (the manifolds) but after the cats (the secondaries), it is much less so. Generally from there onward, bigger+shorter is better.
  6. The thermostat is at the engine end of the lower rad hose. Once it warms up and opens, it would begin to warm the coolant in the engine. It probably would warm the engine, but it would take a lifetime. My Pathfinder had one, but I never used it.
  7. Is there something specific that makes you think the engine is running rich? Does it drink fuel or have black and/or smelly exhaust? Lean misfires can create the illusion of running rich, so there's that. The way to tell rich/lean is with an oxygen sensor, really. You can change the thermostat, a $10 part, but there is stuff in the way. Follow the upper rad hose to the engine, it's in the metal spherical part. If you can get to the bolts that hold it in, you can replace it. Just beware that you need to drain the block or it will leak coolant everywhere...
  8. I wonder if you could do a centrifugal supercharger for less money and effort.
  9. I would inspect and clean all electricals as well as the fuel system. Then I would do a leak down test on all cylinders.
  10. With bigger tires, as in, bigger side walls, the tires are more compliant and would give the appearance of being more upright / correct looking. The actual camber at the wheel would be the same. You always want some negative camber when at ride height, because almost no suspension setups give you enough of a camber curve to keep the tire upright during turns (from steering itself and from body roll). Long story longer, bigger tires would allow you to get away with more which is what your observation would say.
  11. Wheels and tires would not affect camber, caster, or toe. Only scrub radius would be affected.
  12. 1 and 2 are negligible. I always buy two bottles of coolant and am left with a 3/4 full one. 3 could be solved with a metal plate blocking part of it in the winter. This is common even with factory rads in places where it gets extremely cold. 4 I would agree with unless it has been proven in practice that the factory one was too small and/or had poor airflow through the bodywork. Refer to the Gen3 Toyota Supra for such a vehicle. All of this aside, I've never had a problem with my Pathfinder overheating or even showing signs of a weak cooling system. Wish I could say that about the rest of the vehicle.
  13. Use name brands and avoid gimmicks. You don't need fancy wires, v-plugs or anything like that.
×
×
  • Create New...