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 Post subject: 1979 Sunny
PostPosted: Thu Jul 15, 2010 5:06 pm 
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Joined: Wed Dec 09, 2009 9:14 pm
Posts: 25
Here's my sunny as featured in...

http://datsun1200.com/modules/newbb/vie ... post327570

About time I put up some info of my Sunny.

Its pretty much your run of the mill 1979 Datsun Sunny currently in Granny spec apart from...

Extractors
2" Exhaust
Electric Distributor
Quad Motor Bike Carbs
Custom air box

Interior is in great nick and every thing works on the car (beside fan switch - only works full speed) and the clock. Will fix them once I have the dash out.

No rust on body, original paint and wheels.

The carbs are Mikuni BS34's using manifolds/air box I made. Having a 34mm bore they have the same cross sectional area as the stock carb but more flow because they don't have all sorts of crap in the bore - plus there's four of them. Being CV of a function they perform great, have good response and are very street able.

My plans for the car now is to drive it till I blow it up some how. I did a vacuum test today and I got a steady needle but a little low on vacuum saying late ignition timing (however, ignition timing actually correct) meaning I'm low on compression I guess - rings are a bit tired. So once I'm ready I'll pull the motor and reco the gearbox Plus do a worked NA build.

Hi Comp Pistons
Camshaft
Lighten Pulley (smaller dia. too), flywheel, rods, crank, push rods, Ali. retainers, Ali. rockers
Knife edge crank + chamfer/tear drop oil holes
Polish valves, rods, crank, combustion chamber, exhaust ports (and grit blast inlet port + tracts)
3 angle valve grind
Springs
Larger sump
Oil cooler
Bigger radiator
Adjustable timing sprocket
Port head
New rings, seals and bearings
New oil/fuel pump/water pump
And more stuff once I remember it...

Here's some pics and a Video (would be nice to embed it but I don't know how).

Video: http://www.viddler.com/explore/DIYMark/videos/1/

I just love the ITB intake sound - despite somewhat muffled from the air filter and whizzing fan. The exhaust note is pretty good for a $50 muffler and the decel after the rev sounds cool.

Pics:

http://img228.imageshack.us/f/imgp0319w.jpg/
http://img706.imageshack.us/f/imgp0320p.jpg/
http://img717.imageshack.us/f/imgp0321w.jpg/
http://img36.imageshack.us/f/imgp0322i.jpg/
http://img43.imageshack.us/f/imgp0323m.jpg/
http://img15.imageshack.us/f/imgp0324t.jpg/
http://img43.imageshack.us/f/imgp0326z.jpg/


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 Post subject: Re: 1979 Sunny
PostPosted: Tue Jul 20, 2010 1:54 pm 
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Joined: Sun Jul 13, 2008 7:24 pm
Posts: 1590
Location: Mt. Martha - VIC
Any more details on the carbs? How difficult were they to set up/tune?

Also, pics embedded.

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 Post subject: Re: 1979 Sunny
PostPosted: Tue Jul 20, 2010 4:50 pm 
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Joined: Thu Feb 25, 2010 9:51 pm
Posts: 105
Location: Perth
Now that is response. Nice work. Love to see some vid's of it driving!


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 Post subject: Re: 1979 Sunny
PostPosted: Tue Jul 20, 2010 10:04 pm 
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Joined: Wed Dec 09, 2009 9:14 pm
Posts: 25
As a matter of fact the 1979 Sunny came factory with quad motorbike carbs...what you don't believe me?! You know...grandma had to get to church with some throttle response and intake sound :P

The carbs are Mikuni BS34's that I got from the wreckers for $60 - obviously a clean up and few coats of paint later they look like this.

Setup involved making my own manifolds/air box/modded extractors at work.

Tuning is a pain because I had nothing to start with basically and no reference as to what a Datsun with bike carbies should be jetted with. Also these carbs use needle jets and jet needles that no longer exist - they were sort of only made for this carb and the limited motorbikes it was fitted to.

However the main jets, air jets and pilot jets are all available these days except the needle/emulsion tube which I had to modify (I drilled the emulsion tubes and sanded needles with a micrometer - hard to get 4 needles within 0.02mm of each other!).

But seeing as I was probably going to spend more on jets than what the carbs cost me I just drilled jets in my lathe with a small drill set. Only jets I had to solder and re drill were the pilots - so when I get time I'll order the proper sized ones - I have no issues with drilling the bigger, but soldering them and drilling them smaller to me is a bit dodgy.

I also got another bank of carbs for just the jets/needles in it - at $60 a bank, you wont but jets that cheap.

Oh and I used BS34's because when I looked at the wreckers these were the biggest bore carbs I could find in a complete set - there were some nice ones of an R1 but they were missing all sorts of pieces.


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 Post subject: Re: 1979 Sunny
PostPosted: Mon Aug 09, 2010 7:40 pm 
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Joined: Thu Dec 03, 2009 1:20 am
Posts: 355
Location: Booyal, QLD (near Bundaberg)
any ideas what carbs you could get cheap parts for?

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1973 B110 - http://ozdat.com/forum/viewtopic.php?f=60&t=21539
1972 B110
1978 120Y sdn
1973 B120 - dead
1971 VB110 4dr - sold
Others:
1995 Proton Wira - daily sh#tbox

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 Post subject: Re: 1979 Sunny
PostPosted: Mon May 28, 2012 7:43 pm 
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Joined: Mon May 21, 2012 10:40 pm
Posts: 4
Location: Melbourne
can you do a video on how to set this up? please much appreciated


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 Post subject: Re: 1979 Sunny
PostPosted: Mon May 28, 2012 10:34 pm 
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Joined: Wed Nov 11, 2009 7:54 pm
Posts: 1117
Location: Victoria
CRAB MASTER this thread is about 2 years old and jack of all trades has not been online in over a year. But good luck

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fleet:
78 200B
78 ZH Fairlane 500 Bluesmobile
86 ZL Fairlane ZLane
78 ZH Fairlane 500 Barn find
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 Post subject: Re: 1979 Sunny
PostPosted: Sat Jun 02, 2012 4:29 pm 
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Joined: Sun Sep 04, 2011 10:56 am
Posts: 404
Location: Belco, act
sweet any idea on power?

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tradesafe: Dazda, 2ndTimeStanza, Qeleh, big mac, hatchman


1979 Datsun Sunny Wagon 13b Turbo conversion: http://ozdat.com/forum/viewtopic.php?f=60&t=28890


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