Jump to content
SAU Community

noob questions

xsoulx

By xsoulx,
in General Automotive Discussion

 Share

Recommended Posts

sammus Grand Master

sammus

Posted
Posted

I dont want to get bitched at for spreading false info so... disclaimer: I think the following is correct but I'm not 100%.

Compression test: Tests the amount of compression in a cylinder by screwing the device into a spark plug hole.

Intercooler: This isnt mine :cheers: ---> "A device which cools the air entering the carburetor or fuel injection system. Colder air has more oxygen molecules than warm air. Thus cooler air gives more power and better fuel economy. An intercooler looks like a radiator. It contains large passages for the intake flow, and uses either outside air or water directed over it to lower the temperature of the intake flow inside. Also called a "charge-air cooler" or "chargecooler." Compare "aftercooler." "

Link to comment
https://www.sau.com.au/forums/topic/29405-noob-questions/#findComment-601444
Share on other sites
Redbaboon Collaborator

Redbaboon

Posted
Posted

As Sumo said, it is a test that involves removing a spark plug, and inserting a 'compression' measuring dial and cranking the engine over. This forces the piston to compress, (but not there is no ignition).

The pressure can then be seen on the dial before it dissipates. If the piston rings are shagged, then the compression will be poor. Good compression is important for a healthy engine, and you can find out the required compression for your engine from workshop manuals.

Link to comment
https://www.sau.com.au/forums/topic/29405-noob-questions/#findComment-601772
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • joshuaho96
      Cas issue

      By joshuaho96 · Posted

      Could be falling edge/rising edge is set wrong. Are you getting sync errors?
    • joshuaho96
      Jacks that fit under GTR lips that can reach the subframe?

      By joshuaho96 · Posted

      On BMWs what I do because I'm more confident that I can't instantly crush the pinch welds and do thousands of USD in chassis damage is use a set of rubber jacking pads designed to protect the chassis/plastic adapter and raise a corner of the car, place the aforementioned 2x12 inch wooden planks under a tire, drop the car, then this normally gives me enough clearance to get to the front central jack point. If you don't need it to be a ramp it only needs to be 1-1.5 feet long. On my R33 I do not trust the pinch welds to tolerate any of this so I drive up on the ramps. Before then when I had to get a new floor jack that no longer cleared the front lip I removed it to get enough clearance to put the jack under it. Once you're on the ramps once you simply never let the car down to the ground. It lives on the ramps or on jack stands.
    • GTSBoy
      Mistakes were made, my R34 Story

      By GTSBoy · Posted

      Nah. You need 2x taps for anything that you cannot pass the tap all the way through. And even then, there's a point in response to the above which I will come back to. The 2x taps are 1x tapered for starting, and 1x plug tap for working to the bottom of blind holes. That block's port is effectively a blind hole from the perspective of the tap. The tapered tap/tapered thread response. You don't ever leave a female hole tapered. They are supposed to be parallel, hence the wide section of a tapered tap being parallel, the existince of plug taps, etc. The male is tapered so that it will eventually get too fat for the female thread, and yes, there is some risk if the tapped length of the female hole doesn't offer enough threads, that it will not lock up very nicely. But you can always buzz off the extra length on the male thread, and the tape is very good at adding bulk to the joint.
    • Duncan
      Mistakes were made, my R34 Story

      By Duncan · Posted

      Nice....looking forward to that update
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      Neg, the top one is actually for the front. The sizes are 18x10.5 +18 and 18x11 +32.   I measured many times but I'm sure I'll have problems as this is the thread for problems.
×
×
  • Create New...