Jump to content
SAU Community

Bleeding Coolant

craig132

By craig132,
in General Maintenance

 Share

Recommended Posts

Craig SLO33 Enthusiast

Craig SLO33

Posted
Posted (edited)
hey hey, does anybody know how to flush coolant from a rb25 engine block? the radiators removed and i have all the AC removed so i cant turn the heater on, and not sure on other ways to do it, cheers

you just need 2 block off the bottom hose, fill up the motor with water thru the top hose ,unblock the bottom hose to drain it again,. do that a few times should acheive what you want to do you might want 2 take out the thermostat first..

Edited by Craig SLO33
08yannch Rising Star

08yannch

Posted
Posted

i just did this 2 days ago lol

what i did was first undo top radiator hose then the bottom one i then flushed with water and then (first time trying this) ran compressed air through the system to flush out every last bit this cleaned out almost all of the old coolant as i know i used 8L of fresh coolant and the rb25 takes about that much.

alternatively there is a bolt on the drivers side of the engine that u can un do to drain every thing and then u could flush with water *note u need three bond 1386B to seal the bolt

and also when toping up with water only use distilled or (better) because tap water is what causes corrosion. i used 10L distilled water and 1L of coolant concentrate. also distilled water will extend the life of ur coolant so u dont need to change it as often

¿? why do we need a thermostat especially in sumer ? was thinking of taking mine out

mad082 Grand Master

mad082

Posted
Posted

the thermostat is needed at all times to make the car run properly. running without it can actually cause overheating issues, as weird as it sounds, if you are driving it hard. it will also cause you to use much more fuel not having it in as it will take you car much longer to heat up and on the highway the temp can drop back down to where the car is on cold temp enrichment. to explain that a bit better, when the car is cold the ecu makes the car run a bit richer than when it is at operating temp. it is basically like having the choke on on an engine that does have fuel injection.

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

    • DraftySquash
      Newbie from VIC

      By DraftySquash · Posted

      Just wanted to unearth this and post my baby with the new front ❤️😝 Took her to my wedding rehearsal today. Next up is getting wide skirts (after wedding)
    • Kinkstaah
      Nismo GT Pro LSD configurations

      By Kinkstaah · Posted

      Yea, that is what I was getting at in my ramblings too. The nismo one actually is a 1.5 way and a 1 way. They don't do a *2* way because a true *2* way would have equal ramp angles. Or is that a true 1.5 way? Realistically I think a "1.5 way" does not actually exist. A diff can either lock in two directions or one. It also doesn't help that a LOT of people in Australia speak about 1.5 way diffs are referring to their 1 way diff.
    • GTSBoy
      Nismo GT Pro LSD configurations

      By GTSBoy · Posted

      Well, the trouble with that ^^ is: The configuration shown is absolutely a 1-way, not a 1.5-way. There is no way that a 1.5-way can be said to offer LSD action only on acceleration. If Nismo cannot get that right, then it is impossible to believe their documentation. That ^ is not a 1.5 way setup. That is a 1-way.   And so now I have allowed all doubts to flourish and have gone back to look at the MotoIQ video. I originally made the mistake of believing him when he said "this is a 1.5-way" at the ~6:10 mark. Because what he did was take the gear assembly out of the 2-way opening and just rotate it one place to the left to drop it into the 1-way opening. When he dropped it in there, the cam was "backwards" compared to the correct orientation shown in all other photos of that config. The flat shold have been facing the 1° ramp side of the opening, not the 55° ramp side. And I thought, "gee that's cute", but I was concerned at the time, when he put the other ring back on, that the gap between the rings looked like it was wider then in the 2-way config. And then I said a lot of things in my long post on Tuesday that could only make sense if the guy from MotoIQ was correct about what he'd done. BUT... I have now done my homework. I grabbed a frame of the video with the 2-way config, and then grabbed another with the "1.5-way" config, snipped out the cam and opening of that frame and just pasted it direct on top of the 2-way config. I scaled it so that the triangular opening was almost exactly the same height in both. AND.... the gap between the plates is wider with the cam installed in the triangualr opening backwards. That is.... it cannot go together that way. There would be massive force on the plates all the time, if you could even reassemble it.  So, My statement on the matter? The Nismo diff is actually only a 2-way and 1-way. There is no 1.5-way option in it, regardless of what they say. Here's a photo of a real 1.5-way ramp opening from Cusco (along with the 1 way option). And the full set of 1 through 2 way options from their racing diff, which is not same-same as what we'd typically be using, but...the cams work the same. A little blurry, but it comes from this Cusco doc, which is quite helpful. AND.... Cusco do in fact do what I suggested would be sensible, which is to have rings that do 1 and 1.5, and 1.5 and 2. Separately.  
    • PranK
      Hello sau 👋

      By PranK · Posted

      Welcome Adam. Car looks great!
    • Kinkstaah
      Nismo GT Pro LSD configurations

      By Kinkstaah · Posted

      "With a 1.5-WAY, the LSD is effective only during acceleration."
×
×
  • Create New...