a12 question

For all your general datsun ramblings
Post Reply
funkydato
Datsun Dreamer
Posts: 116
Joined: Fri May 29, 2009 9:55 pm
aka: Pickles
Location: Christchurch
Contact:

a12 question

Post by funkydato »

just dropped a a12 into my 310 sunny.

Need to know if I have water coming from the head where the gasket is, is that just a stuffed head gasket???

I hope it is.
81 b310 Dato (everyday drive)
81 b310 Dato (in storage)
79 Sunny (project on-going)
Ministock (Green, 1200)
dirtyleppa
Datsun God
Posts: 3943
Joined: Sat Jul 19, 2008 1:35 pm
aka: leppa
Location: BLENHEIM
Contact:

Re: a12 question

Post by dirtyleppa »

most likely a head gasket, but could also be a cracked head. if you take it off the do a head gasket, take the head to flemmings cylinder head specialists in sockburn. get him to skim it, crack test and pressure test it. might as well get it done, cheap insurance on an engine
Bartman
Committee Members
Posts: 7303
Joined: Sat Jul 19, 2008 9:04 am
Location: Datsun City
Location: Christchurch New Zealand!!!!
Contact:

Re: a12 question

Post by Bartman »

They Leak there when the head gasket in installed back to front and upside down. How hard is it leaking?
They don't call me the man with the rubber arm for nothing you know.............
funkydato
Datsun Dreamer
Posts: 116
Joined: Fri May 29, 2009 9:55 pm
aka: Pickles
Location: Christchurch
Contact:

Re: a12 question

Post by funkydato »

its leaking at the back & at the front passengers side corner, dont think the head is cracked.
81 b310 Dato (everyday drive)
81 b310 Dato (in storage)
79 Sunny (project on-going)
Ministock (Green, 1200)
jas1200
Datsun Driver
Posts: 218
Joined: Tue Jan 05, 2010 3:55 pm
aka: Jas
Location: Wellington
Contact:

Re: a12 question

Post by jas1200 »

Mine leaked at the front passengers side and at the back when I put the head gasket on the wrong way around like a dumb ass.......
User avatar
Kitch
Financial Member
Posts: 1689
Joined: Wed Aug 20, 2008 9:29 am
Location: Timaru
Location: Timaru
Contact:

Re: a12 question

Post by Kitch »

could be off the beaten track, but I pissed water out everywhere
when I put a motor in my 1200 a wee while back, cause the head I used
had water jacket holes, coming through the side of the head above
the inlet ports! must be off some different manifold arrangement or
emission system? nothing some short screws and maniseal didnt sort out
funkydato
Datsun Dreamer
Posts: 116
Joined: Fri May 29, 2009 9:55 pm
aka: Pickles
Location: Christchurch
Contact:

Re: a12 question (now the Timing please)

Post by funkydato »

Bloody hell, head gasket on the wrong way, lol.

Now tips on setting the timing, I know to set it about 12, but at the moment I stuck the timing light on it & it reads above 20, how do I adjust it, I know its to do with the dizzy.
81 b310 Dato (everyday drive)
81 b310 Dato (in storage)
79 Sunny (project on-going)
Ministock (Green, 1200)
User avatar
classicdat
Committee Members
Posts: 3259
Joined: Wed Apr 21, 2010 9:59 pm
aka: Vaughan
Location: Datsun Central, Christchurch
Contact:

Re: a12 question

Post by classicdat »

Sounds like it might be a good thing to buy a Haynes Manual. They really are good and very useful. People on here are happy to help too, but books can be far quicker and easier.
The distributor is located to the block by a 10mm headed bolt through a plate on the bottom of it. The plate is slotted, just loosen the bolt a little and turn the distributor, pull toward the vacuum hose to advance and away from it to retard. Timing should be set at about 800rpm, with he vacuum hose disconnected. If your engine has been modified and you wish to run 91, I'd say 12 would be a maximum safe limit to run. Ensure the 10mm is tight when finished.
Last edited by classicdat on Fri Aug 17, 2012 9:42 pm, edited 1 time in total.
Datsuns from A to Zed
Post Reply