Thought i'd be kind enough to go ahead and login and give a full update on the datsun A15 build as its been some very long time

The car has had many changes, its been through 3 different engine setups the A15 with the twin webers, it A15 blow through carby, and now an all out custom A15 EFI turbo setup

The rig run down now is as follows;
Wisco Pistons 40 thou over bore and fire ringed
Max speeding rods
ARP Studs
236@50 Camshaft
Tomei 1.5mm MLS Headgasket
Tomei lightweight pushrods
TOmei Double valve springs
Tomei seats collars and retainers
Custom Dizzy with Halleffect
Custom Crank trigger pick up 60 -2
Custom NFNR intake manifold - TPS sensor added
Custom Turbo manifold
Garret T25 Turbo internally gated
750 Seiemens Injectors
Custom surge tank with lift pump and inline 044 pump through all aeroflow AN lines and Fuel Reg - Return to tank setup
Haltech Elite 750 ECU
Haltech Wideband controller
Haltech sensors and distribution block
Custom Direct clutch 190mm brass button clutch
Toyota Steelcase gearbox with dellow conversions bellhousing and holden W series clutch fork
New tailshaft
R31 diff with billet 31 spline axels
Running Straight E85

not sure if i have missed much else besides CAN inputs, MAC valve and specific sensors but happy to advise

Only just really sorted some issues had with the ECU and got it started over a week ago just need to do a few little things sort out vaccum lines and other little peices make sure its buttoned up completely then take it to get tuned with a mate and see what power we make, with the setup around the 14 psi hoping around the 120-130kw should be acheivable and if wanting ram that boost up and should definately see above those 200hp

https://www.youtube.com/watch?v=KcuGhD2Oasc

Video of first start of it Turbo Efi

Attach file:

---

  22308803_10154684133056148_2650304801791214919_n.jpg (131.30 KB)


  39878844_10155360839921148_540823806625710080_n.jpg (112.77 KB)


  49937875_10155634873131148_2957925667309617152_o.jpg (103.04 KB)


  62360531_10155908753891148_5897590469411471360_n.jpg (131.91 KB)


  62343201_10155908753951148_1609545586950799360_n.jpg (83.04 KB)


  62121708_10155908753981148_8912862046136041472_n.jpg (76.87 KB)

id assume he means exhaust being turbo..

If you want something hit up NFNR (find them on facebook) in South Africa They do alot

Including EFI intake manifolds for turbo setups william is his name

Can build your setup as well for you..

Or if your wanting to do carb or something else.. the next option just find any reputable exhaust/fabrication shop they can easily make one for you myself and mates have made many apon many turbo manifolds its not overly hard the collector is the only hard part but can source flanges and collectors online from shops as well to suit i.e t2/t4 flanges

Just curious simon what gearbox are you using with your Turbo A-series i know this thing makes some serious power

Hey boys,

Needing a hand I'm just finishing off my new turbo A15 build the engine is all built and ready to go the issue I have is limiting and having a good timing curve and spark to keep the engine safe and reliable.
My first thought was to just get my electronic dizzy recurved to limit advance but I want the best performance along with the safest tune.

I'm really wanting to buy a cb performance black box but the thing I'm wanting to know is will it work okay with an electronic dizzy and it says the dizzy must be locked.. Just wanting to confirm or know the best option for programable curve..

Whats the best way to lock out an electronic dizzy for a programable IGN

Too Easy that was my thought process, ill just use one of the nice little compact Holley Mighty Mite Fuel pumps with the higher output one around 15-20psi will do the job perfect and return to normal tank is nice and simple also :)

For a turbo setup with a 32/36 is running a couple bosch 70 fuel pumps over kill in the following configuration;

one as lift pump into surge tank and one in line to fuel filter and fuel reg and then return to surge tank at say (-6 AN) 3/8 fuel lines? being its carby and a fuel bowl of the carb will most likely flood over at above 7psi and the 70 fuel pumps are around a 40psi pump into the raising rate fuel reg not sure if can get the fuel rate to drop to around the 7-8psi of the weber then raise the 5-10psi needed for boost

yeah I'm more leaning towards turbo, a really over the hill naturally aspirated for some spirited street drives and cruises really isn't a suitable option the engine would be made to rev and be driven hard its really not made to just be a slow old slug around town until you really get into the top end of the driving experience where 90% of driving isn't done unless on the track.

The 160hp a12 that Simon did years ago for the A12 is a good goal but id be happy to back it off keep it more reliable and save and the 120-130hp turbo is a reasonable and more than doable power range especially for the A15 that way I'm not going stupid and breaking diff's and gearboxes its just a good fun medium, but then the issue of loving boost comes in and put in a tee piece and go silly for more power haha

I always wanted the naturally aspirated Twin weber and now that I have built it mild its really not that so over the top its good fun but when your reving the guts out of it and just don't seem to be going no where and a Suzuki swift drives past you it really dampens the mood. I know its not ment to be some rocket and I never wanted it to be at all I love the classic and old mechanical style and simplicity yet I just seek abit more fun under the foot.

270 ATW on an A-series?

please elaborate on this build as sounds wild..

Sorry mate as much as id love to sell off and help everyone own all the H89 heads its just not something i can really part with i do have a h75 id part with but yeah no one really that keen on a h75 haha

Hey boys just wanting some opinions here,

So currently i have a couple spare A15's one of them is bored 78mm with oringed block and i have couple spare H89 heads

I have also in my possession new tomei camgear, timing chain, tensioner, light weight pushrods, nismo double valve spings 32 intake and 38 exhaust valves to suit the h89, head gasket and everything else really there to do a good freshen up

With everything i have there currently and my twin 40 dcoe webers on redline manifold and equal length extractors im tempted to send the cam shaft off to camtech get a 257 @50 grind then spend around the $1500-$2000 putting work into the head and getting the engine all nice and fresh as a N/A build and with the parts i have and some good head porting i should hopefully be able to see around 120rwhp?? tell me if im dreaming

Or the other option is i have already a turbo manifold with t25 flange (frankthedolphintrainer) a 32/36 weber with a boost prep kit from turbo gemini and a whole range of jets to suit, yet with the turbo setup i wouldnt really bother doing a big cam grind just leave a stock cam but then of course need to purchase fuel pumps lines, fuel reg, probably put in a 2 liter surge tank as well and run it on around 7-10psi ill put in a AEM UEF Wideband and get the AFR right and should see the same rear wheel horsepower for the same cost but alot more torque, thus if i want to do a decent engine overhaul at the same time i would probably sell off the weber setup, extractors and fuel setup to be able to do a turbo side

i just am a little in the air which way to go, screaming engine that i have to rev the guts out of to 7200rpm in N/A form to get it up and going or turbo setup with the t25 turbo i have laying around will get up and moving sooner..

I have not really done a decent N/A build my A15 with the webers in there atm is not making anything and overkill with out the supporting mods really not making the most out of what parts i have laying around..

Would a Street/weekend track 120rwhp N/A be great fun? (thats if im dreaming to high for 120rwhp the dream is 136hp 100kw id be super over the moon with)

im open to all suggestions just trying to get a better thought process

I too would really like to get my hands on these CAD drawings be of great help to go towards custom turbo manifold