S12OC UK Forum  
S12 World Affiliate Program
S12 United Kingdom / Club-S12 International / / S12 France / S12 Eastern Europe / S12 Sweden

Go Back   S12OC UK Forum > Main Categories > How-To section
User Name
Password
FAQ Members List Calendar Today's Posts

Reply
 
Thread Tools Display Modes
  #1  
Old 01-06-2011, 00:33
30psi's Avatar
30psi 30psi is offline
PAID MEMBER
 
Join Date: Oct 2005
Posts: 2,456
30psi will become famous soon enough
Default

I did it by tapping in to each ground wire that went to each coil and collated them together via the diodes to have the combined signal. Instead of tapping this in to the back of the instrument panel I used the original signal wire from the earth of the original coil. This was on a Datsun by the way but the principal should still be the same. On the S12 I think its the blue wire going to the coil that feeds the instrument, but check.
__________________
Reply With Quote
  #2  
Old 05-06-2011, 17:49
paulsilv's Avatar
paulsilv paulsilv is offline
Registered User
 
Join Date: Dec 2007
Location: Doncaster
Posts: 432
paulsilv is an unknown quantity at this point
Default

Got the Temp Gauge wired in and working like a dream

But I am stuck on the Tacho wiring.

Wired the 4 Diodes together with the stripe toward the Tacho


An here again from slightly further away showing the 4 seperate wires to be spliced into the coil packs


This is the plug that plugs into the Ignitor with 4 wires coming off it
Fig 1.


If you follow these wires through the loom they eventually end up at this plug. You can see them entering on the left hand side
Fig 2.


And again the same plug closer up
Fig 3.


These wires then come out of the other side of the plug in different colours (As Below) Which are the correct ones to splice into????
Fig 4.


I am completely lost trying to find the original blue signal wire from the original coil. Do I cut and join or Splice ??? Where is this???

If I dont use this original blue signal wire, is it the light green wire I should be using behind Tacho???


.

Last edited by paulsilv; 05-06-2011 at 18:21.
Reply With Quote
  #3  
Old 26-02-2008, 20:00
Sharas's Avatar
Sharas Sharas is offline
S12OC User
 
Join Date: Jul 2006
Location: Lithuania, Vilnius
Posts: 71
Sharas is an unknown quantity at this point
Default

Quote:
Originally Posted by Pukkasilvia View Post
same s12 engine mounts in exactly the same location.No mods needed
Now i have a little problem here.
Obviously as my s12 was fj20, the engine mounts are different and dont realy fit that well.
So i got my self a couple of s13 engine mounts, but they dont fit the travers (or whatever you call that thing that they bolt to). So now the milion dollar question: are the mounts different and do not bolt up (so i just need a couple of s12 mounts) or is the travers (or whatever it is called) different on the fj and ca cars? Anybody knows?
__________________
86 Silvia Grand Prix - under reconstructio
Reply With Quote
  #4  
Old 26-02-2008, 20:05
30psi's Avatar
30psi 30psi is offline
PAID MEMBER
 
Join Date: Oct 2005
Posts: 2,456
30psi will become famous soon enough
Default

I used S13 mounts on an S12 subframe, but I used the S13 brackets (which are required to match the mounts). Benefit of S13 brackets is they bolt to the block via 3 bolts per side (not 2 like on the S12).

Thats all well and good, and you can mount the engine BUT I would like to point out a potential flaw.

I can not tell you if the engine will sit at a different height or not. Whilst this sounds trivial it may effect the angles on the prop shaft and therefore you could experience vibrations due to larger angles on the UJ's. It may be fine (in fact the difference is probably minimal) but I have to point this out as you could find youself with a problem.

I didn't have a problem as I was independantly setting the height of the engine, box and setting the angles up on the Datsun anyway. Only reason I used S13 mounts was coz I wanted to fit nice solid nismo mounts.
__________________
Reply With Quote
  #5  
Old 26-02-2008, 20:10
s13eater's Avatar
s13eater s13eater is offline
PAID MEMBER
 
Join Date: Nov 2005
Posts: 5,124
s13eater is on a distinguished road
Default

the fj20 mounts are oblong and about 47mm with the engine sat on them.
__________________
fj20/et a replacement for displacement
Reply With Quote
  #6  
Old 27-02-2008, 06:10
Sharas's Avatar
Sharas Sharas is offline
S12OC User
 
Join Date: Jul 2006
Location: Lithuania, Vilnius
Posts: 71
Sharas is an unknown quantity at this point
Default

I am using the s13 brackets, because they came with the engine, so i never even checked if my fj brackets would fit (i just asumed they wouldn't).
Now the thing is that the s13 mounts dont just bolt to the subframe (thats the thing that i was refering to as "travers" ). Seems that i would need to drill a little hole in the subframe, for the little thing that aligns the mount (its closer to the bolt then on the fj mount).
If the left and right mounts are different in this aspect i might have to of the same side. Ill look into this today, maybe make some pic's to make it all clear.
__________________
86 Silvia Grand Prix - under reconstructio
Reply With Quote
  #7  
Old 27-02-2008, 07:13
doski's Avatar
doski doski is offline
PAID MEMBER
 
Join Date: Oct 2005
Location: douglas, isle of man
Posts: 501
doski is on a distinguished road
Default

When i fitted my det on the mounts i cut the little locater off my nismo mounts
Reply With Quote
  #8  
Old 27-02-2008, 09:23
30psi's Avatar
30psi 30psi is offline
PAID MEMBER
 
Join Date: Oct 2005
Posts: 2,456
30psi will become famous soon enough
Default

Just rotate the mount 90 deg's, the dimple is supposed to sit in the same slot that the bolt goes into. I would also recommend not tightening them up until you got the engine in place as you get a degree of flexibility from where they can move up and down in the slot
__________________
Reply With Quote
  #9  
Old 26-07-2013, 14:14
bigdaves12 bigdaves12 is offline
Registered User
 
Join Date: Feb 2011
Location: Nottingham
Posts: 314
bigdaves12 is an unknown quantity at this point
Default

quick question, can i do a det conversion using a loom and ecu from a auto s13 into my manual s12?

or must it be a manual s13 it comes from
Reply With Quote
  #10  
Old 27-07-2013, 20:18
paulsilv's Avatar
paulsilv paulsilv is offline
Registered User
 
Join Date: Dec 2007
Location: Doncaster
Posts: 432
paulsilv is an unknown quantity at this point
Default

Not sure on this one. Don't know if there are any differences.

I grabbed everything from a manual.

Maybe the S13 Manual may give any differences, you can find them free online if you do a search.
Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 10:19.

Powered by vBulletin®
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.