15 Posts - Page: 1

Datsun 1000 a15 + 5 speed advice

Hi guy's.  So I'm having a serious thought about possibly building up an A15 and 5 speed combo for the new dat 1000. Anyone have any advice on fitment isses? I already know that I need to fab up some off set engine mounts. my main concern is the fitment of the 5 speed box? or are there any other engine box conversions out there where I don't have to do tunnel mods. would love a g13b but looks like the tunnel needs cut...
Any help would be much appreciated. cheers!
Tunnel mods do need to be done... but minimal really
Tap tap... job done
And fabricate for crossmember
 
Do it
Had many an A15 in my 1000's... its all the rage
Have one to go into my next coupe... with Celica 5 speed behind it
Cheers Neil, yeah I think I might just stick with an A Series engine as I don't really want to touch the body of the car. wouldn't mind taking my time and having a shot at an A series twin cam head swap for something different, make it cross flow and get the most I can out of it. 
I found a complete and possibly running A15 for $600 would you say it's worth it? cheers again 
Thats about the going rate for an A15
Its about what I sold my last one for
You could always stick a small turbo on it if you need more ommf
Standard Datto gearbox and diff become marginal with an A15 let alone a booster one... so you will need to think about those too
Hence me going celica box... not sure on diff yet.
<----- what he said,
Big blocks make the Thou a great thing,
gearbox and diff depending on how hard you want to treat it... 
Good to know! yeah I think I'll take both of your advice and go the A15 then, I think it's a good deal as it has everything on it still and Nick said it should be a runner so hopefully I can see it running before I buy. but either way I plan to build it up anyways. hopefully its an oval port! 
With the gearbox, do you guy's have or know anyone with an A series 5 speed? and are there kits availabe for them? possibly straight cut gears etc? car's not a daily so noise doesn't bother me haha. cheers! 
A series 5 speeds aren't that strong if you build a hottie
 
All A15's should be oval ports
Alright. I may just build up the A15, put in a 60 series box and just nurse it... and if it blows I'll go from there.
Thats what I did
3 gearboxes and 2 diffs later
Ooohhh I seeee, not good. do the toyota geraboxes fit the Thou tunnel?
After owning many A15s in several guises Im a true believer in the early A12 with 76mm bores
they rev higher and a good 4 speed puts up with them as does a 3.45 sourced from DD on 1200.com
That ratio was available for h150 and H165 and keeps the revs at a nice level for the 4 speed
If I going turbo you need to engineer it so would go straight for A15 capacity to get early spooling.
Otherwise no engineering you can pick up an A12 for biscuits and H89 head and GX cam.
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 d, yourself and the other guy's have definitely given me allot to think about. 
The last thing I want to do with the Thou is tunnel mods to fit a bigger box. So maybe at the end of the day I'm probably better off going A12 in the Thou and building up another car if I really want a powerhouse lol. I've always been a big fan of rev happy engines too. I'm quite good at metalworks as I'm a boilermaker so something else that I'm not scared of cutting into would be great! 
Cheers, Jake
Metal worker! great as Im not and still made effective bike carb manis
that totally woke up any A series regardless of their steed even stock.
Honda Keihins worked well and looked old school from old cb1000.
A12s are underrated, just opening up the round ports, mild cam,
A15 sunny stock cast header or aftermarket, elec ignition and bike carbs
produce better torque than a A12 GX motor lower where it counts and
can rev out very nicely especially with 76mm pistons giving less shrouding.
The oval heads are usually for more hp at the top but not in the mid range.
This was confirmed by rallye guys in Victoria that campaigned a 1200, 120y
and a sunny 310 and swore the round ports with L16 valves went better
for midrange and helped better in all areas of the curve.
The bike carbs around 36mm are all you need and sound very sweet.
You can also fit the A14 crank into your A12 and have close to 1400cc
without worrying about engineering or your gearbox. The rod stroke ratio
is even better for the street and revs very nicely still with 78mm stroke.
An old member had the hybrid A12 with A14 crank, opened up A12 rods,
A15 pistons milled 1mm off the tops and was his favorite daily engine
and weekend getaway hills and curves setup. The rods are lighter on
the hybrid than an actual A14 121.5mm vs 133mm, pistons are lighter
again 28.5mm vs 34mm comp height and shorter rod ratio welcome
higher comps with less issues than traditional longer rod ratio setups.
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
Wow! haha cheers for the huge response D, alot of very useful info there! definitely makes me consider the a12 again, especially if I can get a bit more low down grunt and also have a rev happy top end engine. funny you mention the bike carbs actually, as I was actually considering going ahead with quads. I love the sound and responce you get from them! had a 4age 20v in the past with the itb open with desperate filters and a fairly loud exhaust, used to love the low down pull and noise the thing gave off! 
Don't mean to change the subject at all, but I have also been looking into the mazda b series cylinder head swap and it actually looks quite doable and parts/ engines are very plebtiful. I quite like the idea of 16 valves, with the ohc cross flow setup. 
Have you done this before? and possibly on a bored out a12? cheers! jake
supposedly speedway guys have done them for class rules so they can get away with more capacity
eg 1070cc vs 9xxcc
Rob where one of our members here got the twin cam head setup was doing up a 1000 tudor
with an 8v ohc mazda head and I think the 16v soch is a better idea !
simple small light and rev happy whats not to like! I reckon go for it as the power increase is massive.
quad carbs sound awezum no matter the brand as long as set up properly but I loved the lil keihins!
everyone used to think my A series where rotary engines as they buzzed like crazy
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
15 Posts - Page: 1