Jump to content
SAU Community

Recommended Posts

I run a 5558 0.63a/r low mounted stock position on 98, 286rwkw at 16psi- was tuned on 18psi, wana take it up to as high as possible -is 23psi do-able safely and how much rwkw should I expect? No e85 -its a daily.

Theres only one other guy on SAU that I know who runs the 5558 on a 34 aswl- he made 392rwkw on e85 high mounted and with ffp.

Got a link to that result? I know of someone who made around 370rwkw with cams, FFP, high mounted etc but not other than that. Do you have those supporting mods, or stock manifolds?

That guy was Kurtis from central coast, tuned by Jez-black 34 sedan- up on youtube aswl, I think its on this thread too, yes I have the usual support mods but no ffp and stock mani, 40mm gate

Gates hanging off rear housing btw, plumbed back -no ghey screamer etc. 23psi please lol. JEM stopped at 18, said it was heating up. I have coated the intake pipes over engine in exhaust wrap and removed the coolant bypass thru throttle body (big difference in getting rid of heating and response, was surprised). Now I can easily touch the intake pipe past throttle body and over injectors with my hand after some high boost redlining runs lol.

Yep that is who I was talking about too, except he made 372kw. I suspect your stock manifolds will quite quickly start making getting any more power on pump gas quite a bit harder as you start pushing past the point you are at now

  • Like 1

Yep that is who I was talking about too, except he made 372kw. I suspect your stock manifolds will quite quickly start making getting any more power on pump gas quite a bit harder as you start pushing past the point you are at now

I know. Im just really really hoping to push a smidge past 315-320rwkw like stao has done with his various turbos- I'm after the kick in guts feeling. Whats the highest boost a stock RB25 on 98 has seen safely? I havent seen past 23psi on SAU.

Thats around the limit really of boost on 98 as things start getting hot and detonation starts unfortunately. If not interested in e85 id suggest a water methanol set up. You shojld see close to what you want in power wise with w/m

I know. Im just really really hoping to push a smidge past 315-320rwkw like stao has done with his various turbos- I'm after the kick in guts feeling. Whats the highest boost a stock RB25 on 98 has seen safely? I havent seen past 23psi on SAU.

I can't know for sure, but I know I wouldn't have the confidence to book a dyno tune hoping that much power at JEM on the stock exhaust manifold and a .63a/r housing personally. Remember Stao runs his cars on a hub dyno, and uses a Brae exhaust manifold... one way or another it is quite likely to make things much easier to make that kind of power, especially as the boost gets up.

I'd expect a PT5558 should be able to flow a bit better than a GT3076R - but you'll need the whole setup to be up to the standard of making that power on 98.

I did consider wmi since its a daily, but seeing as its not popular I rang up n spoke to Mark from Unigroup, hes not a fan of it either and said he wouldnt bother with it, said theres a few things that could go wrong if not setup right yada yada

I know my stock mani and 98 fuel is the limiting factor here, but stao was making good power well past 300rwkw on stock mani before he got the Brae mani, what I didnt know was that his is a hub dyno lol, so maybe thats why.. What are your thoughts on wmi Lith, yay or nay, I have read the threads btw, and remember Kurtis was also on the 0.63a/r 5558, but he had a aftermarket mani

You need to remember Stao is not running the same turbo as you. You shouldn't be comparing what he got unless you are running the same turbo.

In your case the turbo has a much smaller exhaust housing to give you the spool effect you are after. Staos turbo is running a larger housing which will help fend off detonation.

In my own case 23psi was also the limit of 98. I was getting ping at that level.

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

    • Forgot to include this but this is the mid section of my steering rack that looks like it has a thread/can be turned with that notch mentioned in the post:
    • Hey everyone, Wanted to pick some brains about this issue I'm having with rebuilding my 33 rack (PN is 49001-19U05). All of the tutorials/videos I've seen online are either R34 or S Chassis racks which seem to be pretty straightforward to disassemble but this process doesnt carry over to my rack. Few of the key differences that I've noted The pinion shaft on the other racks bolt on with 3 torx bolts: Whereas my rack bolts on with 2 allen head bolts: These changes are pretty inconsequential but the main difference is how you pull the actual rack out of the housing. The other skyline/s chassis racks can be taken out by tapping the rack out of the body with a socket and it just slides right out. I'm unable to do that with my rack because there's a hard stop at the end that doesn't let the seal/shaft be tapped out. Can also see a difference in the other end of the rack where mine has a notch that looks like you're able to use a big wrench to unthread 2 halves of the rack whereas the other racks are just kinda set in with a punch. My rack: Other racks: TLDR; Wanted to know if anyone has rebuilt this specific model of steering rack for the R33 and if there were any steps to getting it done easier or if I should just give this to a professional to get done. Sorry if this post is a bit messy, first one I've done.
    • I would just put EBC back on the "I would not use their stuff" pile and move on.
    • Can I suggest you try EBC directly again and link them to as many competitor catalogues as you can to show their listing is incorrect, eg https://dba.com.au/product/front-4000-series-hd-brake-rotor-dba42304/ If you have access to an R33 GTST VIN and your VIN, you could also use a Nissan Parts lookup like Amayama to show them the part number is different between 33 GTST and 34 GTT which may get their attention
    • So i got reply from EBC and they just this site where you can clearly see those 296mm fronts on R34 GTT. I send them photos and "quotes" that 296mm are not for 34 GTT and they are too small. But it will be very hard to return them cuz nobody here knows 100% and they just copy those EBC catalogue :-D https://ebcbrakesdirect.com/automotive/nissan/skyline-r34
×
×
  • Create New...