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Re: A12 Rotrex build
Just can't stay away
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Great info! Cleared up a lot of questions of where and how

When the time comes, I'll see what possibilities I have :)

Most economical option for me is probably the axel from a Suzuki Vitara, a Pajero, Patrol or something alike.
That I can get pretty cheap and they will be plenty strong.

Posted on: 2017/1/31 11:58
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Re: A12 Rotrex build
No life (a.k.a. DattoMaster)
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DD thanks for the masterful info even more models than I imagined!

I can get the a complete housing but shipping from here is
prob more expensive than from the US which also has them.
The centre themselves are 750usd plus 110-120usd postage
I put lower costs for each unit to help with their takks ;)

My units are behind many different cars atm and one in
particular is a daily, track, drag abused bluebird with
turbo sr20det that paints 11 on a regular basis so they
are strong! the other I remember is a track 280c with
178rwkw L28 which is a showcar but also historic racer

Posted on: 2017/1/31 2:46
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Re: A12 Rotrex build
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To use an H190 complete center ...

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... requires an axle housing
Open in new window


H190 Axle Housing came in many, many Datsun/Nissans:

* 1985- Nissan Vanette C120.A12 truck
* 1979- Nissan Vanette C120.A14,A15 except coach
* 1979- Nissan Vanette C120.LD20,LD20T,Z20
* 1966-1967 411 Bluebird
* 1968-1970 S311 Fairlady/Sports Roadster
* 1968-1972 510 Bluebird wagon
* 1973-1977 610 Bluebird/160U wagon
* 1982-1983 late S110 Silvia/Gazelle/200SX
* 1977-1980 810 Bluebird/Maxima wagon
* 1981-1984 910 Bluebird/Maxima wagon
* 1963-1965 320 Truck
* 1967-1972 520/521 Truck
* 1973-1979 620 Truck
* 1980-1986 720 Truck
* 1986-1997 Nissan D21/Navara (gasoline 4-cyl)
* 1997- Nissan D22/Navara (2WD 4cyl except King Cab)

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Posted on: 2017/1/30 22:31
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Re: A12 Rotrex build
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Great thread!
I can get the Rotrex with an experimental housing that has internal recirculation/bov ;)
And the TB's I designed won't be able to be forced open by pressure... I think *_*

H190 complete centers? How much did that cost them ?
Then I just have to build my axles etc. onto those?

There aren't that many old nissans up here, unfortunetly...

Posted on: 2017/1/30 12:18
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Re: A12 Rotrex build
No life (a.k.a. DattoMaster)
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A good thread to work out some efi boost choices pre after after
http://www.sxoc.com/vbb/showthread.ph ... cooled-supercharger-setup

Ive sent a H190 LSD clutch pack centre to Finland and Holland recently
for 2 different cars a sunny and a cedric etc. The H190 can be found in
720 and navara & vans but not sure how popular they were in Denmark.

Posted on: 2017/1/30 0:34
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Re: A12 Rotrex build
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Yes, control of all parameters will be a top priority. I can get a good deal on Van Kronenburg ECU, https://kms.vankronenburg.nl/ , quite good stuff! And I have some good people to map the thing when the time comes.

16 psi and up, looking forward to that ! ! !

Until the gearbox is mated to the engine, can the std box and diff handle that power? ( 74' 120Y/B210)
Or am I in over my head on that one?...

I want to get another diff with time, most likely is going to be a shortened Pajero unit, or something alike. That's what easy to come by here in Northern Europe / Denmark :)

Posted on: 2017/1/29 20:43
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Re: A12 Rotrex build
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If you control the mixture, spark, and temperature, the stock cast pistons can easily take 16 psi boost

* Never let A/F mixture go lean. 12:1 for best power, 14:1 for cruising
* Never let spark advance cause detonation. Mechanical spark advance needs tight control
* Inlet temps kept down to where detonation does not occur. Cold air intake helps along with either moderate boost OR adi (water/alcohol) injection

Posted on: 2017/1/28 7:39
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Re: A12 Rotrex build
No life (a.k.a. DattoMaster)
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doing modern CNC stuff can dislocate the period finish that it deserves
have a look at this for some idea of what can be done to suit a datto.
Going carb like SU works well and a guy I know who has an 84 suzuki alto
fit a rotrex with SU as he does daily where he works for mini customers.
They run beautiful and his 800cc suzi makes 109hp atw!
https://barryscarshows.files.wordpress.com/2016/06/sam_2492.jpg
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https://lh6.googleusercontent.com/-Czw ... 7BWo/s912/01092011506.jpg
http://www.enginebuildermag.com/wp-co ... -Photo-13-web-300x200.jpg

Posted on: 2017/1/28 3:53
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Re: A12 Rotrex build
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For good atomization, you can do port injection, and point the injector at the inlet valve. It's what most engine manufacturers do for a supercharged engine. The carburetor guys need more atomization and it might work slightly better even for EFI

Possibly you can make an adapter plate to use with the RX-8 transmission. The only one I've got a photo of is the cut-n-shut

Posted on: 2017/1/27 22:27
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Re: A12 Rotrex build
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Arrh yes, The swastika's xD

Is the only way to fit the AZ6 via Cut'n'slut?

I have been told that about good atomization before... But I can't quite find out how I'm going to do it yet. I Will start out NA anyway, so when the SC gets inbound I might change the setup a little and move the injector

A billet Rockercover would be SOOOOO awsome :O
You give me too many good and expensive ideas !!! God dam it D.

Posted on: 2017/1/27 22:08
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