Jump to content
SAU Community

Recommended Posts

Has anyone heard about mounting a IHI RHC7 turbo on a RB26?

I'm searching some information like RPM for boost peak at different boost levels, maximum bhp output, feedbacks from owners...

I just finished rebuilding one and it just came back from balancing. I'm going to mount it on my forged bottom RB26. Mine is a bit king of hybrid because using a HKS T04R turbine housing.

Here is some information found on internet:

Compressor wheel inducer= 57.15mm exducer=81.91mm

57.15mm^2/81.91mm^2*100 = 49 trim

Turbine wheel exducer =62.61mm, inducer =73.66

62.61mm^2 /73.66 mm^2*100 = 72 trim

Compressor housing 2.27 inches of area / 3.31 radius = .69 ar

T04R turbine housing is T4 inlet .81 undivided

RHC7 seems to be given for 62LB/min

It has very near dimensions with power enterprise PE2220, so it could probably flow 22M3/min. A bit less than 62lb/min.

I have seen 1JZ dynos with that turbo at 550RWHP.

If some of you used this turbo or have information, please let me know. smile.gif

  • 1 month later...

Digging out this thread.

I have been looking for weeks for information about the exhaust housing of this hybrid turbo.

It looks sooooo small! And nothing is written on it.

And it's still a real T04 flange!

it's smaller than all T04R turbine housing I have seen and way smaller than RHC7 stock turbine housing.

In one hand the spool must be sooo quick!! In the other hand there is a risk of early choke. Luckily, the exhaust wheel is damn big, 74/63mm 72trim.

The only info Y have is it's stabilo written "HKS N°=40" on it. It has real T4 flange and 3" 4 bolt outlet.

Have you already seen this kind of turbine housing?

RB26RHC7_07.JPG

RB26RHC7_08.JPG

ihi1.jpg

IMG_5380.jpg

IMG_5379.jpg

ihi rx8 indy turbo..

the compressor cover and backplate are made from magnesium and hard anodized

the comp wheel is investment cast titanium and is ptfe coated( teflon)

inducer is 74mm,exducer is 91mm

a/r is 1.0

the turbine housing is investment cast from titanium

it uses v band clamps for manifold and outlet.

the turbine wheel is a super alloy inconel 738.

inducer is 89mm,exducer 79mm

the a/r is 1.2

looks completely different to my rhc7, your one seems to have a garrett/khs rear on it?

Mines T4 flange with some sort of weird V band rear.

From what I understand its a touch bigger than a holset hx35, CEFF1E on here has a hx35 on a stock bottom, stock cams rb30DET, 325rwkw, 19 psi, full boost at roughly 3500rpm's.

So theres a possible comparison.

I havent ran my Ihi on the rb30det yet, car isnt finished.

According to the specs, it should be nice on the 3 ltr,see how it goes I guess.

heres a pic of mine

http://i33.photobucket.com/albums/d85/anmlrx/rb.jpg

Edited by works 510

jibe, i forgot my camera today but took some with my phone, I can MMS them to your phone if your interested?

Thanks, but I'm living in France, maybe it's not included in your mobile phone contract and would be expensive?

I can wait, it's not a problem.

If you still prefer I will send you my number by PM.

  • 1 year later...

Digging this old thread.

I'm about to finish my build and now I'm close to first start.

I made measurement of the compressor and turbine wheels and imprecise measurement/calculation of turbine A/R and what I found seems a bit crazy!

Compressor wheel is effectively 82 exducer, but is 63mm inducer instead of 57!!! So that makes the compressor side a good monster though it becomes bigger than a GT3582R and closer to a T04R/Z compressor.

And the second kisscool effect is on the turbine side: the wheel is effectively some Ptrim whith 74mm inducer and 63mm exducer (same as T04R/Z), but my rough measurement of A/R on the T4 housing gave me 0.40!!!!!!! Totally retarded A/R on a RB26! I think I now understand the "HKS N°40" written on it.

Thinking about what it will look like when used, it should be a spooling monster but clearly a power and boost killer at high rev, with enormous backpressure and heat. Looking at the turbine entry, the T4 inlet becomes sooooo small inside regarding the amount of gas that are going to try to pass through it!!!!!!

So I think I'm going to try it at 1bar to see how it behaves, but I really must find an other bigger standard RHC7 housing for a more realistic use of this turbo.

Works 510, do you maybe know where I could find one?

  • 2 months later...

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

    • Hey guys! Y'all are the masters so figured I'd check in on a few items here. - My engine sounds ever-so-slightly more raspy than the other NA RB25s I've listened to. It's barely noticeable but definitely a slightly different sound. - When I back off the throttle at high RPM, I will sometimes get a pop out of the exhaust, assuming this can be diagnosed as misfire. Some history on the car: - Had an exhaust leak in auction sheet but was claimed to be fixed by seller (bought from USA importer).  - Car's coil packs and sparks were replaced when it was sold to me, but unsure on what the gap is and whether the coil packs are correct.  - A prior mechanic had misdiagnosed a pilot or throwout bearing sound as LSPI/detonation. Had played with timing a bit, pops/raspy sound of engine just got worse. Got timing reset. - Had failed emissions a few times. First time went in as is, failed. Second time, replaced cat, still failed, running rich as hell. Third time replaced o2 sensor, passed. Car still smells gassy though. - Timing belt and valve cover gasket also replaced.  - Gas mileage is... low. about 350-400K per tank.  Any idea if I'm having any serious issues here or does this all sound like normal old NA RB stuff and I'm fine to drive it with the pops/slightly raspy engine? If it'll help, I can get drop a video of the sound of the engine.
    • So....to find any R chassis part number, get your VIN (will be something like ER33-xxxxxx for you) and go to: https://www.amayama.com/en/genuine-catalogs/nissan and enter it. From there you have access to a web version of Nissan's part system, FAST. It is a bit tricky to get used to, so maybe have a shot and post up what you think.  You can also search by general model but note in some cases your car might have different options so VIN is safest.  On diagram 211 I got 14075-75T16 for Connector, Water Hose If I search for part 14053‑21U10 that you posted, that is also a water hose but not the one bolted to the plenum and 14075‑04U00 is the fitting where the water hose goes into the block.
    • Yeah now we are talking I much prefer coolers in the front middle because it lessens the chance of a small bump to a corner stopping the whole event. I was thinking the AT cooler can move out of the radiator, delete the AT/engine coolant interwarmer and mount a separate cooler with a thermoswitch somewhere further back as is common in racing, that would be one thing. Beyond that, the engine oil cooler is an obvious one to move to the wheel arch, potentially one on each side, but unused space is an issue. I did have a earlier pic with the bumper off but it doesn't show how busy the corners are: DS is full of the auto driving sensors and PS is totally fully of windscreen washer fluid reservoir But ultimately I was hoping to keep the AC, and the water/air heat exchanger is fundamental so it is not just the radiator that needs to be in front BTW here's airflow to the rad as it ran at the track (one horn is gone now and I'll remove the lights next time):
    • your right the maps for Australia came out in 2017 but are 2010 maps. i got the updated maps SD card put it in and it was the same. Same maps in my Brothers Nissan Patrol. 2020 i think his car is
×
×
  • Create New...