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2 door sedan 1000 build, single rotor goodness

considered something like that, but it woud mean the engine would have to sit higher. then the turbo wouldn't fit, so the engine would have to go even further back... At this stage i think i'll already be moving the pedals back 20mm to clear the dump pipe off the turbo.
 
I do like the tube frame tunnel idea, it will make fabricating the exhaust a lot easier then laying on my back under the car. plus it will make pulling the gearbox and engine so much easier.
 
Engineer is happy to put it through as being turbo (ie needs to meet his requirements for adding a turbo) without installing the turbo so it doesn't have to be engineered again.
You have no idea how tempting it is to put the t25 i already have on it and call it a day, but i'm interested to see what the 6 port motor can do given it's large standard ports. The equivalent sinlge circle diameter (measured at the intake manifold flange) is just over 55mm, with port timing similar to a late opening PP. But with the ability to control the opening of the aux ports it will still have low and mid range torque, with a sacrafice of a bit top end due to the intake not being on the peripheral. 
Given that people get around 160-170rwhp out of a 6 port (no major porting, just a clean up and change to turbo centre plate) and how small the centre plate (compared with 6 port end plates) is i'm hoping to get about 85-100rwhp with it na before porting. Although given the stock port timing this will likely occur around the 8-9000rpm mark. I'm hoping a 4.7ish diff with the rx8 6 speed gearbox should help to get it up to revs quickly, when combined with some 9.7:1 lightened rotors.
I'm hoping for similar power to a standard NA 1.6 MX5, but being in a~400kg lighter chassis. The mx5 i used to have was good fun through the hills of adelaide, with just enough power to not get you in too much trouble, but enough to have a bit of fun. I think on a track it's limits would have been similar to mine (on street tyres), but my limits were the limiting factor through the hills.
I had a lot more fun with the MX5 off the track then my 180sx as i knew i could rev it that bit harder without going past my limits. In the 180sx, even on low boost (14psi) and only making a bit over 200rwhp, hitting too much boost at the wrong part of the corner would have the back end come out, hence my hesitation to drive it to it's potential off the race track. I'm sure the 2 way diff, rose-jointed everything, stiff coilovers and solid mounted engine, diff and gearbox didn't help on the bumpy eneven roads...
 
If you really advise to go down the turbo route straight away (from experience driving both NA and turbo single rotors), I'll look into running a low boost turbo (as you suggested) for around 120rwhp or so. What turbo would you recommend for this application?
I'll still keep the 6 port arrangement though as i believe i need to focus on getting the best 'area under the curve' power until i get used to the set-up (both lightweight chassis, high revving rotary, as well as getting gearing sorted out)
 
I agree a PP would be the best set-up overall for a turbo rotary. When PPing it I would rather invest in alloy end plates rather then fill the standard ports and I don't have the budget to do this yet, plus they won't pass engineering. Once engineered though, they could easily be swapped and no one will know...
Cheers
Luke
I actually stuffed up as you dont need the 2 angled sides just one parallel flat bar parallel to the steering rack so I updated the last pic on the last post but not quite sure now if you are using the front cover anymore now you have the dry sump setup but have you seen the renesis front cover its very compact avs older front covers, pumps no dizzie etc.

 
I would only use a VNT turbo around T28bb size as the 13b puts out 4 litre exhaust energy
and the single would be halve that but the VNT turbo is variable so no lag also.
 
I would go PP with VNT turbo and run 6 psi for starters but if you are set on the 6 port
I can only suggest it for the NA tune as turbo you only need unlimited flow in and out
which the PP would give. The other option is ported renesis 6 port setup and only use
the front plate for inlet and exhaust, once ported they are massive eg.

 
would save alot of space like the PP but give you no sealing issues or overlap found on PPs
yet should be boosted to make use of the side feed from one side only
 
All in all rotaries boosted are very different to pistons engines, they are very responsive and predictable
During times of universal deceit, telling the truth becomes a revolutionary act, Big Brother is watching you - George Orwell United we stand, Divided we fall - Aesop  NAMES IN JAPANESE - LOOKING FOR VB10 SHELL http://iamthewitness.com/ZionistControlOfBritain.html   lovely piece! http://www.thetruthseeker.co.uk/?p=24688
If i had more space between the engine and steering rack i would do exactly that, but there is about 50mm at the largest point, before i fabricate a timing cover.
Undecided on exact plan for the timing cover atm, i'll either chop the bottom 1/3rd off the 12a timing cover and put a 6-8mm bit of alloy plate in it's place, or completely fab a new timing cover. It will likely come down to time, cost and practicallity.
I couldn't use the standard rx8 timing cover regardless as i need the engine mount to be on the front of the engine. It may help to clean up the engine bay though without the dizzy tube, if i decided not to fab a new timing cover from scratch.
 
Agreed a PP would be the ideal set-up for a turbo, waiting to hear back from engineer about the legality of a PP though. It's always been my 'final set-up' plan, but as mentioned i would like to see what the 6 port is capable of NA. I guess my comparison will be to the B6ZE engine in the early NA MX5 (later engines were detuned)
 
FYI specs of early NA MX5 1.6ltr
114hp @ 6500rpm
136nm @ 5500rpm
 
Specs for 6 port 13b
146hp @ 6500rpm
187nm @ 3500rpm
therefore 1/2 13b would be approx
75hp @ 6500rpm
95nm @ 3500rpm
I figure with a decent intake, exhaust, 9.7:1 rotors and ECU (mixed with removing the very small and restrictive centre plate) i should be able to get over 100hp at the flywheel, although at a higher rpm (closer to 8,000).
BTW 200rwhp has been cracked with just an exhaust and Power FC, although 160-170rwhp seems to be the 'expected' output (about 200hp at the flywheel) 
 
Where/what would you source the VNT turbo from? From what i've read the exhaust gas temperature (from a piston petrol engine) are too high for the actuated vanes to handle. The only ones i know of that are suitable for petrol engines are from Porsche because then internal parts are made from inconel. 
I'm already convinced that becuase of my planned lack of exhasut manifold (turbo will bolt straight to the motor) i'll need an inconel inducer, I'm not sure if a VNT system would stand up to that abuse
Cheers
Luke
BTW what diameter exhasut did the PP turbo single rotor 13b run?
I need to allow room for it before i fab a trans tunnel.
Was leaning towards either 2.5 or 3"
Cheers
Luke
Could it be possible the halve hp and torque figures occur at much higher rpm when using a single
as the ancillaries put more strain on one rotor than on 2 so maybe 500rpm higher for both?
 
The VGT unit would be off a porsche however a single RB26dett unit could work dont they
have inconel units that can only handle 12psi max? however you will need more boost
eventually unless you run a supercharger off the front shaft like a bugatti or austin 7 sports
twin charged single rotor etc. I think 2.5 inches would be fine as my 12a Bp turbo ran 3 inches
During times of universal deceit, telling the truth becomes a revolutionary act, Big Brother is watching you - George Orwell United we stand, Divided we fall - Aesop  NAMES IN JAPANESE - LOOKING FOR VB10 SHELL http://iamthewitness.com/ZionistControlOfBritain.html   lovely piece! http://www.thetruthseeker.co.uk/?p=24688
It's possible that the max rpm/torque may be at a higher rpm, but keep in mind i don't have AC or power steering, so that should help offset it back to the 'normal' rpm.
 
I know that the s13 sr20/ca18 had ceramic exhaust wheels, didn't realise r32 GT-R's did as well. May look into that... Hopefully someone at work can point me in the right direction.
Eventual turbo will likely have to come off a porsche or be custom built, either way it'll be $$$...
 
UPDATE:
After many hours of measuring, thinking and 3D modelling/FEA i have finally decided on how to mount the engine. As they say pictures tell 1000 words.

The timing cover/engine mount will bolt through the holes that steering box would normally bolt to. Mr Datsun was nice enough to put them on both sides and also mirror them, meaning i only need to cut one template. I have already traced the require shape onto 6mm alloy plate and drilled all of the mounting holes, but need to use the mill to cut the locating holes (as they aren't going all the way through the plate and need a flat bottom).
I was hoping to get a bit of help milling the locating holes today (i had to go into work for a few hrs), but there was a breakdown on one of the machines, so hopefully i'll get a chance to look at it during the week.
I'm hoping to pick up a front stationary gear and front counterweight during the week to see if i can modify them to fit within the flat plate timing cover or if i'll have to add a rasied section.

I've also cut out the trans tunnel to fit the gearbox in, i didn't get a chance to headover to an exhasut shop to grab some 2.5" or 3" tube so can't start fabricating the near gearbox tunnel yet. I assume everyone runs their exhasut tucked up next to the gearbox so it doesn't hang low?
 
The dry sump pump has also been disassembled and had it's stages reduced by 1, but again need to use the milling machine to make a new plate to divide the suction from pressure side.
Cheers
Luke
its gonna look nuts and well done on the engine and rack mount combo
Looks like you will have heaps of room left over for all kinds of things.
Maybe even a gt40 style bonnet for an inset angled radiator?
During times of universal deceit, telling the truth becomes a revolutionary act, Big Brother is watching you - George Orwell United we stand, Divided we fall - Aesop  NAMES IN JAPANESE - LOOKING FOR VB10 SHELL http://iamthewitness.com/ZionistControlOfBritain.html   lovely piece! http://www.thetruthseeker.co.uk/?p=24688
Cheers,
 
Tha'ts the plan an angled radiator ducted through the bonnet. I've got enough room that i can run a radiator around 600x600mm, I'll just need to find what the skinniest radiator is available and aprox match the cooling capacity to what a 13b would normally have. This will allow for the minimum weight (least water and material), maximum cooling (thinner core) and least cost. And providing it's ducted correctly more then adaquate for even the hottest days at the track.
 
I have managed to cut out the brackets for the engine mounts. I'll have to wait until tomorrow to finish up the timing cover itself though. Which is annoying as i don't know if i'll be able to get the engine mount finished this weekend. Hopefully I can get it tacked together and then welded up durng the week.
I'll post pics and the rest of my progress on Sunday arvo or during the week.
 
d,
I'm going to be in Japan for a week (yokohama) for work, I'll have most of the nights free and possibly one full day. What would you recommend to go and see/do? Nismo factory is already on my list for friday (as it's a half day), but i'm hoping I may get to go on a tour through work (I work at Nissan).
 
Cheers
Luke
Cheers
Luke
Great you sorted out the challenges you faced to get to where you want
I planned to do a fwd in the rear 1000 setup MA10ET with MA12S crank
but looks like that wont happen for quite sometime. Yet the MA12 turbo
can make 240hp with the right setup and rev to 9000rpm with the bare
bottom end and head weighing 43kg sump to rocker cover.
 
Check yout https://www.timeout.com/tokyo
 
As Yokohama and Tokyo change on a yearly basis but definitely the Museum and
even the Zama company if still around would be ace to see what happens there now.
During times of universal deceit, telling the truth becomes a revolutionary act, Big Brother is watching you - George Orwell United we stand, Divided we fall - Aesop  NAMES IN JAPANESE - LOOKING FOR VB10 SHELL http://iamthewitness.com/ZionistControlOfBritain.html   lovely piece! http://www.thetruthseeker.co.uk/?p=24688
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