Jump to content
HybridZ

akuma-z

Members
  • Posts

    31
  • Joined

  • Last visited

Posts posted by akuma-z

  1. Did you assemble the motor yourself originally? Maybe it was that way when you got it.

     

    Derek

     

    I did not assemble the motor so that is very possible. I originally bought the motor for the head and decided the tear the bottom half open to see what was in there.

  2. I tore one of my motors down to check the internals and found some damage on the side skirts of piston 1. The motor is an L28 with what appear to be Ross forged pistons. The motor is stock bore. I did a compression test and all cylinders were somewhere between 180-190 psi.

     

    The damage appears to be isolated to piston 1. The bore visually appears un-damaged. All of the bearings/crank journals were in good shape so it does not appear that any metal fragments made it through the oil system.

     

    Prior to tearing down the motor it ran strong and did not show any signs that there was a problem. The CR was a little high to be running on pump gas (E31 head) and I know there were occasions where I could hear pinging intermittently when it was hot out. What has me confused is that the damage is all isolated to the side skirt. If the damage was caused by detonation I assume I should also see damage on the tops of the piston. My best guess is that there was not enough oil getting to the cylinder or improper installation but I am open to any suggestions.

     

    I am almost tempted to put the motor back together and push my luck with it since it still had good compression and I don't want to put any more money into this motor.

     

    5021679124_723e35a340.jpg5021072081_fe77b16af1.jpg

  3. I have been looking at the speedhut revolutions guages for my S30 but I was having trouble deciding between the gps version or the ones that have the turn signals built in. Since you mentioned that the gps version keeps track of 0-60, 1/4 mile, etc. I think I will get that version and find another solution for my signal lights.

  4. I was talking to an engineer my father works with who knows alot about HVAC. He suggested adding another coil, this is what Porsche did to improve the A/C in the weak system of the 911. It was also suggested to try an electric compressor. This would eliminate one variable from the complex system allowing the compressor to run at optimum efficiency at all times regardless of engine speed.

     

    I am not aware of any electric a/c compressors designed for 12V systems. Everything I have ever seen has been for hybrid electric cars that operate at much higher voltages. I guess it doesn't matter how the compressor is driven since load will still make it to the motor either way, only this way it is redirected through your alternator.

  5. I sent in my tank and was given a quote of $450 to have the following modifications made:

    1. Add sump with 2 fittings (size -8AN).

    2. Remove driver side vent,

    3. Remove stock inlet/return lines.

    4. Exchange top vent lines with threaded fittings.

     

    If you aren't interested in adding a sump I am sure the price would be better.

     

    I was able to ship the tank from Texas for $29 using USPS. I should be getting it back soon and I will post some pics.

  6. I usually get my inspection taken care of when I go back home to visit my family. They live in a small town in Texas that doesn't require emissions testing. This has saved me from a few headaches in the past. I think I ended up saving like $28 since you only pay for the safety inspection portion.

×
×
  • Create New...