Jump to content
SAU Community

Recommended Posts

How much power do you want? Have you got a great suspension set up and good brakes?

For more power forget the cams and plenum and get E85 and turn up the boost (and get a top tune) and if that"s not enough upgrade your turbo.

Bigger cams will only move the power to the right on the graph. Yes there may be a tad more of it but you will loose a whole lot down low. Same goes for putting a different plenum on. So its a trade off. May be worth it, may not, depends on exactly what you want to do with the car.

Also note that if you upgrade to the wrong cams (generally anything massive) you will need to delete the VCT solenoid on the intake, which will also hurt low down torque and power. I think the HKS 256mm drop in does let you retain vct? (someone would have to confirm that) so that, or one tha tdoes, pretty much the only one you should realistically go with

I already have all that I'm using your turbo the atr45 externally gated.. I have a greedy Cooler and 3inch exhaust all the way through

I'm making 336rwkws on P98 fuel internally gated with exhaust dropped @ 22psi with the same turbo on stock cams, it is capable of making alot more then 300rwkws on P98 fuel with stock cams. There is a simple way of checking to see what you need. Take it back to the tuner to do a simple dyno run with exhaust dropped and do a pressure check across the cooler when its at full boost (check my thread). Also if you are running the JJR's 6 bolt Nissan front pipe, make sure the 6 bolt flange is die-grinded to suit factory dump pipe gasket.

If its showing its holding alot more boost that mades more power with dropped exhaust it means some thing in the exhaust is restrictive. Or if seeing 30psi before the cooler and 20psi after you will need a bigger cooler.

Having the bigger cams without the system been able to flow that extra bit of air, it will make absolutely no differences to peek power.

  • Like 1

fuuark it... might as well brag:

R33 Series 2 GTS-t with over 300000km (Edward Lee's Special Edition, dash says 157xxx)

  • Stock Motor with (most likely) 350000km, based on wear and tear of interior, bushing etc.
  • Stock cams
  • Stock valve springs
  • Stock valve seals
  • Stock head
  • Stock head gasket
  • Stock bottom end
  • Stock intake manifold
  • Stock exhaust manifold with havoc gate modification

post-22311-0-16951700-1463922770.jpg

I run camtech 272 9mm lift while retaining vct still, picked up about 45hp over stock cams and didnt shift the rpm too much as i kept the vct still...

but it isnt a cheap upgrade bit over 2k, prob find cheaper upgrades to gain 50hp..

Edited by methz

fuuark it... might as well brag:

R33 Series 2 GTS-t with over 300000km (Edward Lee's Special Edition, dash says 157xxx)

  • Stock Motor with (most likely) 350000km, based on wear and tear of interior, bushing etc.
  • Stock cams
  • Stock valve springs
  • Stock valve seals
  • Stock head
  • Stock head gasket
  • Stock bottom end
  • Stock intake manifold
  • Stock exhaust manifold with havoc gate modification

post-22311-0-16951700-1463922770.jpg

Nice.

But he needs cams and a bigger turbo because of this:

post-89815-0-38410800-1464930708_thumb.jpg

^^^^ Much better daily

:yes::yes::yes::yes::yes::yes::yes::yes:

I was thinking 30 bottom end but I already have forged Pistons and stuff in the 25.. E85 more boost would be good but don't have e85 in Wollongong where I live.. So cams was the optiion and maybe a plenum.. I will do what you said stao and I will look into it! Thanks guys appreciate the feedback!

Another question my tuner said he doesn't want to run more then 20psi on my car because it's on 98 it's safe tuned can I run more?

Edited by sergi_dee

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

    • You ask for things. You specifically state you want responsiveness. A link was provided for a far superior, more responsive option. Find a MX5 workshop that will install it for you. Maybe MX5 Mania will throw on the Fab9 kit. It seems they want to charge almost 14K installed for their kit, so if they charge you $6K to install the FAB9 kit then you'll be ahead? Though really, the 2.5 with a 2860 running low boost will more or less feel as good as anything else. It's a lot of displacement and a small turbo. Think of a more modern RB26 with one stock turbo :p TBH, truth be told I've been driving my own car, and use about 50% throttle at most for 99.9% of the time. Mr Bogan is likely similar so this is all going to be semantics for the use case he actually has. (He'll be happy with anything relative to now) However, the EFR is hands down far superior in this use case. You really, really, really, really do notice it over the Garrett or equivalent.  
    • You are correct, the earlier the torque, the earlier things snap
    • Gents, it will be getting the MX5 Mania kit and the 2.5 will be staying where it is My query was about the 0.64 or the 0.86, whilst the 0.64 might spool a bit faster, would the 0.86 be better IRT EGT and mechanical sympathy, with only a small difference in spool And as I assume I won't need alot of boost to get to 200kw, probably around 10 psi, and with max rpm at 6500, would high EGT even really be a issue with a 0.64 I'm heading into MX5 Mania at the end of Jan to discuss the install, so any info is welcome prior to that Basically have a chat and book a time so they can throw on the turbo kit, and fit a oil cooler with a thermostat, drive in drive out of course  In other news: just finished cleaning the car inside and out, it's now all ready to get covered in bugs and dirt driving to Goulburn tomorrow to lunch,  and go for a stroll along woolondilly River with the daughter and her boy, and of course, visit my grandcats and my new grandpuppy 
    • Sounds like it has an actual problem with mode select doors, or something.
    • Hope your all having a mean Xmas! If anyone happens to know any trick to using the insanely complex climate control system, I cannot get it to not be on dual zone no matter how many times I deselect it (will say it's not but both vents blow different temps). Also one side is always hot, one always cold 🤷
×
×
  • Create New...