Jump to content
SAU Community

Recommended Posts

Hey all,

I installed a vacuum gauge on my car about 2 months ago, and noticed it never reaches 0 when i put my foot flat to the floor. It usually stops at about 5, and i read recently that this could be due to free-play in my throttle, restricting pressure. Does anyone know how to check and correct this?

Cheers,

Martin

Edited by Hanaldo
Link to comment
https://www.sau.com.au/forums/topic/294158-car-not-reaching-full-throttle/
Share on other sites

nah doubt it, id say thats a shitty gauge id say!

maybe check the cable in the engine bay. get a mate to put 'pedal to the metal' when the cars off, and see if the cable actually (mechanically) opens the throttle full. at full accelerator, try and open the throttle more, if you can, youve got an adjustment/cable sretch problem...

or maybe...

i dunno but do neo RB25s have some sorta traction control that partially closes the throttle under wheel spin/very aggressive acceleration?

i know 1js and 2js do...

I have never lost traction so i wouldn't know, but through all the gears the gauge only reads up to 5, so i doubt it would be a traction control thing... I also put it down to the inaccuracy of the gauge, but after reading that there are a surprising amount of cars out there that don't ever reach full throttle i thought it may be worth checking out, i wouldn't be surprised if on an 11 year old car some play had developed in the throttle

Lol yeh i was waiting for them also. Doesn't bug me lol, i give myself shit for an na Skyline... But atleast im driving my favourite car and not some bunky commodore or excel, plus my car is in better condition than a lot of other Skylines on this forum, so tease all you want :P

My car doesn't have a switch for traction control, so if it has it then i can't turn it off. Not interested in thrashing the Skyline either, if im going to do a skid then it will be in my other car.

By my estimations, if i had a turbo running 5psi then i would only then be reaching 0 vacuum ;) Might as well fix this problem and pretend i installed a supercharger :/ Ahhh the imagination... Bliss for NA car owners alike.

P.S. My comment about excels was not intended to be offensive. Excels excel in excellence.

Well i got my mate to put his foot flat to the floor and there was a little bit of play in the throttle, so i got my mechanic to sort that out, and now the gauge reads up to 2. Mechanic said thats likely to be inaccuracy of the gauge, so problem sorted :ninja:

Thanks for the suggestions those who actually said something useful lol :blush:

whats wrong with NA? lol i drive an NA R33 before, quite enjoy riding with it tho. Only certain level you just feel that's wouldn't enough for you. Yet, i believe NA R34 which come with the neo rb20de would be powerful than the NA R33?

Lol ^ You should've just got one of those turbo whistlers, far cheaper. Have you seen their slogan? "Real turbocharger kit = $3000 + installation. Turbo whistler = $19.95... Which one would you buy?". And then you could buy one of those electronic blow off valves.

Lol im pretty sure my car has a neo RB25DE, so thats a bonus on the RB20 :P I fuckin love my car, im perfectly happy with it. Someone else always owns a better car than yours, so im very happy being 18 and owning the car i do

Lol im pretty sure my car has a neo RB25DE, so thats a bonus on the RB20 :P I f**kin love my car, im perfectly happy with it. Someone else always owns a better car than yours, so im very happy being 18 and owning the car i do

Yeah true. When I was 18 an N/A R34 would have been a dream come true, otoh if you ever drive a turbo and really give it some you won't want to go back.

Someone else always owns a better car than yours, so im very happy being 18 and owning the car i do

That's the way to look at it. Be happy with what you got. :P

I'm very happy with my auto slug-box 33, especially after driving the corolla.

EDIT:

Excels excel in excellence.

Sorry but that is just not true...

Edited by Mayuri Krab

I drove Tom's GTR... Yeh i want one. Almost sold my 34 and bought one. Decided i would rather have a nice clean car then a bunky fast car, especially when i know it would get me into trouble. Ill buy a 34 GTR as a reward for graduating uni when i do, holding myself to that as well.

Lol i was being very very sarcastic about the excels lol... although i know of a 10 second one. But that doesn't count because the only thing that is still orginial Excel is the shell, its got a Turbo 5.2L Chev V8 in it... Yeh fast

I drove Tom's GTR... Yeh i want one. Almost sold my 34 and bought one. Decided i would rather have a nice clean car then a bunky fast car, especially when i know it would get me into trouble. Ill buy a 34 GTR as a reward for graduating uni when i do, holding myself to that as well.

Damn you must be rich to think about buying a 34 GTR after graduation. What are they 50k?

Yeah could get you in trouble you are right, but same for everyone.

yea i agree with martin would rather have a nice looking car wit ha bit of boot than a fast shity looking one but thats my opinion

P.S. My comment about excels was not intended to be offensive. Excels excel in excellence.

has anyone actually superchrged an excell ? i heard u can , f*k imagine the power to weitght ratio lol anyone know of a person to do it lol ?

Edited by Yaah31

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

    • It makes you wonder, all these people starting to make a billet replacement head, I wonder if any have thought about trying to adapt tech from newer engines into them. You're already at the full design stage to make a billet head... Why not really spice it up and had some more modern tech into the mix too...
    • Connect all the plumbing up properly. The actual worst part about having the turbo unable to actually build boost, is you can and likely would over soon the turbo if you drove the car (free rev while stationary isnt likely to manage it).   If you do have an air leak as Duncan suggested, you'll have a bad time as the AFM will be saying different to reality.   As you have had the engine out, I'd go over all electrical connections again. If you have a consult cable, plug it in, and see what the ECU thinks is going on. Did you touch the timing belt? If so, double check your timing on the gears is correct AND put a timing light on it while it's idling and see what ignition setting you have. Is the AFM you've installed the one that was in the car previously? You said you replaced seals, what seals exactly? What have you had apart?   From memory when I had my RB25DET with factory throttle, there was two plugs the TPS plug on the loom could go to. One would leave the car running like shit, the other made it work, I think one plug on the TPS area was for something else (an option). It's too many years since I saw that part of the loom to remember properly though.   Is the car idling smooth (as smooth as an RB can)? Does it smell fuelled up?   I have a feeling either timing in timing belt is off, or a sensor isn't right.
    • Theres still skid pan and motokhana days up in QLD at least that are $100 or less. The ones that are ran as "driver training" less so, they're expensive, but just normal skid pan days like SAU ran are still low cost. And thats one of the places I learned to be a lariken, purely by asking for passenger rides, and how people were doing crazy things. Reese gave me plenty of pointers back in the day for skid pan! And yes Duncan, I will never forget your pointers for track work. Especially after Neil got out saying "I am NEVER getting in the car with him again!" 😛
    • 49719 is the cooler loop. Right at the front, LHS of that diagram. Return line from rack (LP side) goes to cooler loop on RHS front of car, then back under engine and returns to bottom of tank. 49717M is feed from tank to pump. HP line out of pump is thick rubber, followed by the hard line that runs down to crossmember and runs in parallel (but opposite flow direction) to the LP return line. Nothing goes anywhere near the firewall or interior of car. The closest they get to that is the connections on the rack.
    • Thanks, plan is to drain all fluid tomorrow and do smoke test to find out the leak.   Appreciate your help and want to understand how the system work. So cooling is achieved by the long loop not any rad? The diagram seems to suggest it connects to somewhere inside the cabin and I thought that is a cooler inside firewall. If you look at the diagram it seems to show it connects to something inside firewall. I tried chasing it but not easy unless I take loads off   i am confident pump is good as fluid goes in and it gets soft( steering) but as soon as I turn engine off , loads of bubble come to surface and overflow. When engine is on , fluid level is below minimum but when off it shoots off and thinking it is sucking air in. I suspect aluminium pipe may have a crack line or whole   smoke test with no fluid should be a good start and if needed will remove the pump   In addition, the one going under the engine bay is high pressure line and one directly connecting from pump to resorvoir is return/ low pressure?   finally I searched and suggestion is to use dexron 2 but that is discontinued so bought dexron 3 as all research suggest it is compatible and shouldn’t cause any issues/ blow seals. I bought two liter of dexron 3 motul atf
×
×
  • Create New...