Jump to content
SAU Community

Recommended Posts

i have a 40th anniversary sII gts25t and i have some problems the car first of all has a small air leak from the fuel rail thats a little bent out of shape and its not sealing, but it still boosts up to 7 psi but the car is really slow, a n/a stock sr20 is faster, the car kind of slugs its way up the tach then at high rpms you start to feel a little push but thats about it the compresion is fine the idle is fine it sounds liek all the cyl's are firing its just uber slow, any suggestions? heh i know its not too discriptive but some help would be highly apreciated

Link to comment
https://www.sau.com.au/forums/topic/169941-rb25det-problems-please-help/
Share on other sites

the fuel rail isnt stoping fuel flow, the previous owner i suspect tried toforce the fuel rail out or something and bent it upwards 1 of the injectors isnt totally flush with the manifold so its sucking/blowing air through thier only 1 injector though

the fuel rail isnt stoping fuel flow, the previous owner i suspect tried toforce the fuel rail out or something and bent it upwards 1 of the injectors isnt totally flush with the manifold so its sucking/blowing air through thier only 1 injector though

That cant be good....

I would take 1400r advice or go see mechanic. before you melt a piston. and check that injector?

Guest 40th-edition

check your Airflow meter for gunk, and clean with throttle body cleaner, may aswell hit the throttle body with some as well..

may have an exhaust leak in the manifold so listen for that and check.

check your O2 sensor and fuel pressure.

could be heaps of things man, so check them and see how you go.

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

    • I mean, I got two VASS engineers to refuse to cert my own coilovers stating those very laws. Appendix B makes it pretty clear what it considers 'Variable Suspension' to be. In my lived experience they can't certify something that isn't actually in the list as something that requires certification. In the VASS engineering checklist they have to complete (LS3/NCOP11) and sign on there is nothing there. All the references inside NCOP11 state that if it's variable by the driver that height needs to maintain 100mm while the car is in motion. It states the car is lowered lowering blocks and other types of things are acceptable. Dialling out a shock is about as 'user adjustable' as changing any other suspension component lol. I wanted to have it signed off to dissuade HWP and RWC testers to state the suspension is legal to avoid having this discussion with them. The real problem is that Police and RWC/Pink/Blue slip people will say it needs engineering, and the engineers will state it doesn't need engineering. It is hugely irritating when aforementioned people get all "i know the rules mate feck off" when they don't, and the actual engineers are pleasant as all hell and do know the rules. Cars failing RWC for things that aren't listed in the RWC requirements is another thing here entirely!
    • I don't. I mean, mine's not a GTR, but it is a 32 with a lot of GTR stuff on it. But regardless, I typically buy from local suppliers. Getting stuff from Japan is seldom worth the pain. Buying from RHDJapan usually ends up in the final total of your basket being about double what you thought it would be, after all the bullshit fees and such are added on.
    • The hydrocarbon component of E10 can be shittier, and is in fact, shittier, than that used in normal 91RON fuel. That's because the octane boost provided by the ethanol allows them to use stuff that doesn't make the grade without the help. The 1c/L saving typically available on E10 is going to be massively overridden by the increased consumption caused by the ethanol and the crappier HC (ie the HCs will be less dense, meaning that there will definitely be less energy per unit volume than for more dense HCs). That is one of the reasons why P98 will return better fuel consumption than 91 does, even with the ignition timing completely fixed. There is more energy per unit volume because the HCs used in 98 are higher density than in the lawnmower fuel.
    • No, I'd suggest that that is the checklist for pneumatic/hydraulic adjustable systems. I would say, based on my years of reading and complying with Australian Standards and similar regulations, that the narrow interpretation of Clause 3.2 b would be the preferred/expected/intended one, by the author, and those using the standard. Wishful thinking need not apply.
    • Yes they do. For some maybe. But for those used the most by abusers, ie Skylines, the numbers are known. The stock eyebrow height for R32/3 Skylines is about 365/375mm or thereabouts. The minimum such heights are recorded in adjacent columns in the database.
×
×
  • Create New...