Jump to content
SAU Community

Recommended Posts

to be honest i would only look at these setups if your really on a budget. The manifolds become bit of a restriction at anything over 280rwkw (we have made alot more but exhaust pressures are way high), we just swapped out a std manifold (gt3582) for a low mount merge collector getup and it transformed the car.

Edited by URAS

Sweet figure there Trent as 280rwkw is what i was aiming for :cool:

See i'm from the Caribbean and its hot as shit right through so i want to keep under bonnet temps down as much as possible therefore not looking at those ss high/low mount manifolds....... not to mention our 95 fuel makes things so much better.

My friend has one of those high mounts installed and has constant problems with coil packs.

This system also "kills two birds with one stone" as it provides a spot to mount the wastegate and a spacer to clear the compressor

Foolboost pic shows a 44mm wastegate right?

Wouldnt that be too big for my application?

I'm on quite a budget with my build and am using a Hypergear ATR28G4 IW on the stock manifold.

Plan is to eventually run an external gate on the stock manifold.

I have a spare stock manifold and a die grinder and plan to port match to the gasket on both ends of the stock manifold and maybe abit of ceramic coating.

Will this make a difference on the amount of power that can be made?

yes it will. when I was using my HX35 on the stock manifold it made around 280rwkw and had boost control issues. now with the external gate welded to the manifold on the same boost it makes 326rwkw on 19 psi. there would be no more in it though. there is probably a huge amount of back pressure but no detonation.

300 is the realistic limit.

What Island are you on bro? We'll be docked in Sint Maarten/St Barths for a while.

If you go with the stock manifold, take the time to match port it to a set of gaskets at least. If you can, get someone to media blast the inside too with some fairly aggressive abrasive.

Good luck.

Sweet figure there Trent as 280rwkw is what i was aiming for :)

See i'm from the Caribbean and its hot as shit right through so i want to keep under bonnet temps down as much as possible therefore not looking at those ss high/low mount manifolds....... not to mention our 95 fuel makes things so much better.

Brisbane RB30 guru's JW Automotive mount GT3540's on not only stock VL turbo manifolds but also have done RB25 manifolds for Godzilla Motorsport. They have given lots of proven results for a considerable amount of time now. They use a Turbosmart external gate mounted along the manifold and a small laser cut spacer plate to give clearance for the turbo. Excellent boost control using this method and have quite a number of cars running 9's and 10's with this set-up.

Brisbane RB30 guru's JW Automotive mount GT3540's on not only stock VL turbo manifolds but also have done RB25 manifolds for Godzilla Motorsport. They have given lots of proven results for a considerable amount of time now. They use a Turbosmart external gate mounted along the manifold and a small laser cut spacer plate to give clearance for the turbo. Excellent boost control using this method and have quite a number of cars running 9's and 10's with this set-up.

When u say mounted "along" the manifold what exactly do u mean???

When u say mounted "along" the manifold what exactly do u mean???

hole cut in manifold and small pipe section complete with flange welded on...quite simple really and looks very neat. Justin is a top class welder also....he welded a trust TD06 flange on a S14 HKS manifold that we needed to modify last night and you would swear it was done by a robot!

Edited by DiRTgarage

Yeh alot of ppl seem to have done this with good results

I guess its a matter of getting it weld right to avoid cracking.

What would be better though... welding the flange directly on the manifold like in the pic i posted earlier or welding in a short piece of pipe with the flange on the end?

I guess the only advantage of welding a piece of pipe allows me to place the gate where i want it?

Also what size gate is recommended for this set up......Rb25, Gt3076 / .63, stock manifolds, 280rwkw which should be around 16-18psi-ish

I was originally going to use a 38mm but in the dyno thread saw some ppl using up to 44mm with this turbo.

What Island are you on bro? We'll be docked in Sint Maarten/St Barths for a while.

If you go with the stock manifold, take the time to match port it to a set of gaskets at least. If you can, get someone to media blast the inside too with some fairly aggressive abrasive.

Good luck.

You're far still bro..... I'm at the end of the chain

Trinidad :ninja:

You're far still bro..... I'm at the end of the chain

Trinidad :ninja:

Ha ha ha ha ha... yeah. We don't get down that far. There seems to be quite a skyline/nissan/import scene going on down there... I know a couple of guys in Florida that send alot of gear and built rb's down your way. Might have to check it out some time.

For my GF's rb25, we cut a hole in the center of the collector, then welded a mounting plate directly to the manifold, bolted a 38mm turbosmart wastegate on and plumbed it back into the exhaust.

J.

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

    • Good morning all, Bit of a random question but figured I’d finally throw it out after wondering for a long while. Before I start, I'm hoping to do this purely out of personal preference. I think it would look better at night, and don't mind at all spending a few hours and dollars to get it done. I've copied this from a non-Skyline specific forum, so I apologize for the explanation of our headlight switch setup that we all know. Here we go: Zero lights (switch off) Parking lights (switch position 1) being a rectangular marker on the outside of the housing, my low beam being the projector in the centre (position 2), and a high beam triggered by my turn signal stalk. Most North American cars I’ve owned of this era have power to the amber corner (turning indicator) light as part of the first switch (parking lights). I’d love to have these amber corners receive power when the headlights and parking lights are on (headlight switch), yet still blink when using the turn signal which is of course a separate switch. Hopefully I’ve explained my question correctly. Is anyone aware of a way in which I might be able to achieve this? Thanks in advance
    • My heads are cathedral port! It's likely possible, but I don't want to add any extra moving parts (I know they don't move) between the heads, manifolds, etc. It will also affect how injectors/fuel rails etc sit and I don't really know if it would change how the FAST manifold goes/sits/fits. I have the LS6 steam pipes already as I have a very late LS1 block so it should be fine. I couldn't find anyone who had ever actually used one for this purpose, it seems 100% of people grind the water pump. The thermal spacers are 12mm and are half way to the cost of the newer water pump anyhow... so if it comes to that I suppose I'd rather buy a new pump. The bearing in the pump I do have is a little.. clunky, but it hasn't done that much time and I never noticed it when the car was together in the past few years, so..
    • The bushing has failed, not all that uncommon for a car of this age.  Any mechanic should be able to push in a new bushing for you, or you can probably buy the entire lower control arm, complete with bushes.
    • Could you not use "thermal" spacers to give the clearance, like the ones I used between the blower and head? That raised the manifold height by around 10-15mm Albeit the ones I used were for cathedral ports, but I assume they have similar for rectangular ports????
    • Thanks Paul I reached out to Autotainment but they no longer work on JDM cars as the guy who used to do the work moved on and is no longer doing that kind of work. I am talking with Level Up Audio though.
×
×
  • Create New...