Jump to content
SAU Community

Recommended Posts

Very simple...

Lag is the time it takes a turbo to come onto full boost; so as an example you may get full boost @ 5000rpm so your lag time is the time it takes ur car to go from 0rpm to 5000rpm

ways to fix lag;

-smaller turbo

-cams

-better flowing head

-ebc

-antilag

Link to comment
https://www.sau.com.au/forums/topic/153765-turbo-lag/#findComment-2859500
Share on other sites

ill take 2 thanks Az.
make them the big ones, and az, i need them by tonight

hahaha i feel like im in the movie.

Sadly there is no overnight parts service that does not cost less then ones left nut. :devil:

To put it simply.

Lag is the process of building up air pressure/flow mass to increase shaft speed within the turbocharger to generate positive pressure.

Until the desired boost pressure is met this is referred to as lag.

To decrease lag, smaller and lighter internals can be used within the turbocharger to increase shafts speed. (smaller turbocharger)

Lag means horsepower though :P

Link to comment
https://www.sau.com.au/forums/topic/153765-turbo-lag/#findComment-2859604
Share on other sites

turbo lag comes from the compressor not being efficient until it reaches a high speed, say 50,000+ rpm? when the compressor isnt spinning fast enough it doesn't produce much positive pressure or airflow so the engine just is burning whatever air comes in. as the compressor gets faster and faster from exhaust gas/engine load the compressor beings to "compress" the intake and stuff more air in.

when there is little exhaust gas the compressor doesnt spin fast enough, so its referred to as lag. common for the skyline range is nothing before say 2500rpm. past this theres enough exhaust gas to wind the compressor into its effiency zone and usually get around 10psi positive "boost" pressure before 3000rpm.

as engine displacment and type changes, along with turbocharger technologoy, engine tune etc so to does the engine lag. so there are a few things you can do to reduce turbocharger lag

Link to comment
https://www.sau.com.au/forums/topic/153765-turbo-lag/#findComment-2860523
Share on other sites

Turbo lag is when you order your turbo and they haven't got any and it will be a two week wait.............thats real lag.

hehe the WORST lag ever. I think we have all been thru that type of lag from time to time. :down:

I am suffering form differential mechanic lag at the moment. it is taking 2 weeks and counting to spool up... :(

Link to comment
https://www.sau.com.au/forums/topic/153765-turbo-lag/#findComment-2860801
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


  • Similar Content

  • Latest Posts

    • Yea - I mean I've seen my fuel pump which is decades old and uh, while I'm not saying this with real knowledge... but I sure get the ick at using anything in the fuel system that produced the state of that pump. Many years ago I went through multiple pumps (and strainers) before I dropped the tank to clean it out with extreme violence. I'm talking the car would do maybe 50km before coming to a halt, which resulted in me cleaning out the filter with some brake cleaner and going on my way. None of my stuff ever looked like what came out of your fuel tank. I don't think I'd be happy with it unless every single component was replaced (or at least checked/cleaned/confirmed to be clean here).
    • I'm not going to recommend an EBC pad. I don't like them. Just about anything else would suit me better. I've been using Intima pads for a while now.
    • Agreed, and in particular the earth strap that should go from the subframe to the chassis but it often broken or left off. There is a section in the R32 workshop manual you can follow for troubleshooting if you don't see anything suspicious, and depending where you are (there is no location on your user profile) you should be able to get your hands on a second hand replacement unit still if needed
    • Yeah they mention as a R34 for 2.5 Turbo...but then again thos "small" were also for R34 by that different site. But i look into it and that 310mm EBC is for R34 GTT. And by those you linked the specs are the same 🙂    EDIT: I found these on one site here: DBA 4000 series T3 DBA42304S They are 310mm...and it says are for R34GTT...are there good? EDIT2: ok they have pads too.  What "color" should i get for street use? I dont want/need some noisy ones...(and if they are not that dusty that is good too)
    • Yeah, shame. Maybe  driver's carpet is available 🙏. I am waiting for both amayama and nangun to confirm.
×
×
  • Create New...