Jump to content
SAU Community

Recommended Posts

Hey Guys from the other side of the Globe :-D

i`m not as new as it seems but it`s my first post / thread and post here and i hope you`ll not beat me for that question... Well, i own a ECR33 since 2010 and i`m on the way to build my second engine for over 500hp. I`m hunting for 500-550 engine hp so i guess thats about 305-315rwkw... prerequisite for my build is..

- IT MUST BE BOTTOM (LOW) MOUNTED prefered IWG and Journal Bearing in case of wear ^^

I`ve found like a lot people here the maker KINUGAWA and it seems they have good stuff especially these are build on MHI chargers or Garrett...

So i thought the right Turbo could be a TD06H 25G because it`s +- the same size (wheels) as GT3076R... But will the TD06 fit in with aftermarket or OEM low mount manifold??

PLEASE ADVISE ME THE RIGHT TUBBY!^^

Edited by DK-Spec
Link to comment
https://www.sau.com.au/forums/topic/449047-biggest-low-mount-turbo-on-rb25det/
Share on other sites

Yes any TD06/GT30 and equivalent precision etc can be low mounted without too much hassle. Will need a T3 manifold spacer for front housing clearance on the exhaust manifold though. Cracking 300kw at the rear wheels low mounted with a reasonable stealthy setup is no issue nowdays.

I have heard that all Kinugawa turbos have issues with internal gate setup. I have experienced it twice firsthand so dont really want to recommend them. Externally gated they are fine. But what I suggest is a Hypergear ATR43SS2. It is a true bolt on turbo with hardly any modification required and will make the power no worries. No issues with the internal gate either.

What fuel will you be using?

thanks for you super fast reply :-D

i`ll use BP 98 octan / RON

Ou what i`ve forget to mention...i would like to have at least 550Nm at the wheels ^^"

Here`s my spec...

RB25det with aftermarket equal length low mount manifold (T3 flange)

- Head: channels smoothed but not really widened and standart valves and lifters, maybe tomei pon cams

- Block: Wiseco 87mm Pistons, RB26dett shot peened rods...with 1.1mm MLS HG (compression ratio was i think about 8.5:1)

- ARP bolts for Head and Rods

- N1 Waterpump and N1 oilpump maybe with Reimax internals...will see ^^"

- don`t know about the Bearings..if Nismo or ACL...

- Exhaust: 3 inch downpipe, 200cpsi Metall Cat, HKS Super Drager

WHATS EXACTLY THE ISSUE WITH THE KINUGAWA I-GATES? Are these too small?? Possible to widen them?

Edited by DK-Spec

Your clearance may or may not work depending on the manifold you have, as it isn't a stock one..

But with a standard manifold you can fit a 3582 down there. My car has a GTX3076R but doesn't actually need a spacer at all to get it to fit.

Going to depend entirely on your non-stock manifold though, would have to test fit or take measurements as that kind of changes everything..

XD engine isn`t build...most parts are still in boxes so...it`s not possible to show you the engine with the manifold fitted.

heres a ebay link that shows the manifold... http://www.ebay.com.au/itm/NISSAN-Skyline-R33-RB25DET-Turbo-Exhaust-Manifold-T3-MF6205-/190481976244?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2c599c4bb4

i`ve bought mine second hand and i`m not sure if it`s exactly the same but as far as i know it should be the it..

Still have a stock manifold but when i can push few horses more with a better flow manifold i will do that ^^" If it`s not possible to fit with China manifold i`ll take the Nissan one :-)

Important for me is that it looks stealthy! the Turbo should be as small as possible and big as needed to reach over 300rwkw/550Nm at maximum 20psi. i`ve heard and read that the stock valvetrain is suffering when boosting over 20psi...is that so?

yes i know about the cheap china stuff but...it was used about 10000km so i hope the critical time which was prone to crack is over and the material is now ready for a real manifold life. btw. i will weld some reinforcement struts from flange to flange...to minimize the load on die piping...

more interessting is...how good these manifolds are in case of flow? O.o

So long as you like it.

I wouldn't touch it.

Is that your stock manifold? What's going on with cylinders 4,5 and 6? Did the engine die?

Edited by Ben C34

no no it`s not died :-D

I hope I will never have to experience how my motor dies..

In my R33 still lives the first Engine and it runs pretty well but i`m sure it will not live forever and because it`s old and i don`t know about his life before ME i`ve decided to buy a second RB25det to built it and make it as proof as possible for my budget and the power. The first engine which is still running i will overhaul then...will be as new from factory :-)

So i have now a completet engine in boxes thats why i was able to make a Pic of both manifolds.

Is the oem manifold not restrictive compared to china?

Oh and.. i bought 2 years ago a RB25det with a strage damage...the owner had no idea what was wrong...

Car was STOCK only a catback and HKS mushrom. At Autobahn 120km/h 5. Gear the engine made BANG and run like a sack of nuts... I`ve bought it unopend for 280,-

As i opend it and pulled out the Crank 1 piston was still in a Cylinder ^^"

Don`t know how or why but the 1. zylinder Rod has given up his Job...the Piston was cracked and Rod was a 2 piece thing...well..piston was not in 2 as well...relly bad stuff in the Sump.

Zylinder not repairable i guess...for sure it must be rebored over 87mm...i doubt 88mm would be enough :-( Crank also destroyed...must be grinded a lot and i`m sure that makes it not better for more torque..

Edited by DK-Spec

There is an extend for either of the manifolds listed above, its obvious the aftermarket manifold managed to make more power on less boost.

Pink is using factory exhaust manifold,

Thick red is the Made in China manifold that cracked after this dyno day and binned.

Thin red is an properly made Brae side mount manifold, that is still going strong over 100+ dyno days.

Turbocharger used is an Older version of ATR43-SS2 turbo that is internally gated and direct bolton to factory manifold, dump pipe, water lines and oil drain. From memory E85 was used for this particular experiment.
allpower.jpg

allboost.jpg

And of course either of the manifolds are comparable to an proper high mount running 50mm external gate.

Exact same turbocharger, no other changes apart from an proper high mount and 50mm gate.

power.jpg

boost.jpg

Latest result from current ATR43SS-2 internally gated bolt-on to stock exhaust manifold and factory dump pattern running p98 fuel can be found here.

In terms of the largest bolton or low mount turbocharger, we can build them way over 700HP. Except this type of log manifold and internal gated system can not discharge that much air that satisfy full compressor efficiency. So 300rwkws or around 500HP would be the largest recommendation if you are looking for a direct bolt on turbo.

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

    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
    • You haven't driven many modern cars then have you? Most of them have sfa steering feel with their stupid electric bullshit steering systems.
×
×
  • Create New...