Search found 117 matches

by 42south
Thu Jun 14, 2018 1:31 am
Forum: Technical
Topic: V12 Compression Test
Replies: 10
Views: 322
New Zealand

Re: V12 Compression Test

Hi
Don’t panic if the hot idle oil pressure is 15-20psi, or even lower.
These engines are renowned for low oil pressure at idle.
It’s unlikely to be the oil pump, as they are also very reliable.
Cheers
Mark
by 42south
Thu May 31, 2018 4:59 am
Forum: Series 3
Topic: Jumping and spitting under acceleration
Replies: 31
Views: 850
New Zealand

Re: Jumping and spitting under acceleration

Hi guys When it comes to shining the timing light on the degree plate I found the best way was to get one of the timing lights with the adjustable tilt head, and a small screen to read the numbers from. It allows you to poke the head up between the hose and the degree plate whilst still being able t...
by 42south
Sun May 27, 2018 8:30 pm
Forum: Series 3
Topic: Ignition Amplifier
Replies: 14
Views: 307
New Zealand

Re: Ignition Amplifier

Hi Andrew
You are probably one of the first to take the sng apart.
The AC delco chip was the one in the original HEI amp, and has been used in millions of cars in the US
I wonder if the SNG box has an upgrade over the original?
by 42south
Sat May 26, 2018 7:40 am
Forum: Series 3
Topic: Jumping and spitting under acceleration
Replies: 31
Views: 850
New Zealand

Re: Jumping and spitting under acceleration

Hi Andrew If you google search for AC delco D1906 you will find several sources. The amazon ad has a picture. As far as testing goes Perhaps the testing listed for the later cars with the CEI amp will be suitable. It is the same system. As you can see it is possible to open the amp from the bottom. ...
by 42south
Fri May 25, 2018 8:45 pm
Forum: Series 3
Topic: Jumping and spitting under acceleration
Replies: 31
Views: 850
New Zealand

Re: Jumping and spitting under acceleration

Hi Guys +1 to Philips timing post.(apart from the porting discussion) Use 12deg Before TDC at idle with the vacuum disconnected, and plugged . You need a good timing light to achieve this. You will also probably have to clean up the marker plate and perhaps remark the degrees with a white marker pen...
by 42south
Tue May 22, 2018 11:39 pm
Forum: Series 3
Topic: Jumping and spitting under acceleration
Replies: 31
Views: 850
New Zealand

Re: Jumping and spitting under acceleration

Hi Woolfi This topic has had lots of discussion on the board. I had my carb ported as per the original Jaguar idea which has the port on top of the carb entering the carb just ahead of the butterfly on the air cleaner side. This gives little or no vacuum at Idle, moderate vacuum at part throttle cru...
by 42south
Tue May 22, 2018 9:19 pm
Forum: Series 3
Topic: Jumping and spitting under acceleration
Replies: 31
Views: 850
New Zealand

Re: Jumping and spitting under acceleration

Hi Hilton The Amp mounts in the valley where the original was. Don't worry about this as the internals of the amp are now a GM solid state chip, not the original style circuit board with its heat sensitive components. So the comments about moving the amp to the front of the engine for extra cooling ...
by 42south
Sun May 20, 2018 9:49 pm
Forum: Series 3
Topic: Jumping and spitting under acceleration
Replies: 31
Views: 850
New Zealand

Re: Jumping and spitting under acceleration

Hi Guys Hilton to answer your questions Hot starting, is improved with the SNG kit, but the best technique I find is to try a start holding a little accelerator, if this doesn't work then push the accelerator to the floor and crank till she starts with a satisfying roar, generally about 2-3 seconds ...
by 42south
Fri May 18, 2018 8:21 pm
Forum: Series 3
Topic: Jumping and spitting under acceleration
Replies: 31
Views: 850
New Zealand

Re: Jumping and spitting under acceleration

Hi The classic Opus failure mode normally doesn’t start until after the amplifier warms up. Your problem is with a cold engine so may indeed be carburettor related, have you looked at the colour of your plugs? On my V12 if I put the choke in too early when cold, the car will spit back through the ca...
by 42south
Wed May 16, 2018 1:09 am
Forum: Series 3
Topic: Feeling a little low!
Replies: 17
Views: 516
New Zealand

Re: Feeling a little low!

Hi I had a similar problem with my S3. Not helped by having 60 profile tyres. Even with New springs and Koni shocks it was still low. I got a local engineering shop to make up spacers to fit to the bottom of the Konis. SNG have some which may be enough. Since fitting the spacers my car sits at the ...
by 42south
Tue May 15, 2018 6:42 am
Forum: Series 3
Topic: Feeling a little low!
Replies: 17
Views: 516
New Zealand

Re: Feeling a little low!

Hi I had a similar problem with my S3. Not helped by having 60 profile tyres. Even with New springs and Koni shocks it was still low. I got a local engineering shop to make up spacers to fit to the bottom of the Konis. SNG have some which may be enough. Since fitting the spacers my car sits at the s...
by 42south
Tue May 08, 2018 8:27 am
Forum: Series 2
Topic: brakes stays slightly applied after stop
Replies: 9
Views: 510
New Zealand

Re: brakes stays slightly applied after stop

Hi the reaction valve is the white plastic item attached to the front of the master cylinder. The little piston that can be sticky is in the body of the master cylinder behind the reaction valve. If you have either the parts manual or the service manual for the car, or check the knowledge base, ther...
by 42south
Sat Apr 21, 2018 6:22 am
Forum: Technical
Topic: IRS
Replies: 12
Views: 781
New Zealand

Re: IRS

Hi
Would this tool work with the S3 IRS. I’m not sure what the rear ARB bolts are?
Any pictures of the thing in action
Cheers
Mark
by 42south
Thu Apr 19, 2018 8:52 pm
Forum: Series 3
Topic: Ignition Amplifier
Replies: 12
Views: 427
New Zealand

Re: Ignition Amplifier

Whilst your in the ignition mode. I fitted the sng kit and ran it quite a while with no issues. Then I started getting moisture or vapour buildup in the distributor cap, leading to missing. Jaguar had issues with distributor caps exploding due vapour leaking into the cap, through the distributor. So...
by 42south
Thu Apr 19, 2018 2:21 am
Forum: Series 3
Topic: Ignition Amplifier
Replies: 12
Views: 427
New Zealand

Re: Ignition Amplifier

Hi Colin
I’m not sure what’s involved, mine was fitted by British vacuum when they drilled my carb as well.
British vacuum are very user friendly and will answer any queries.
Their website is a mine of useful info on vacuum advance modules, and distributor numbers etc.
Cheers
Mark
by 42south
Wed Apr 18, 2018 7:57 am
Forum: Series 3
Topic: Ignition Amplifier
Replies: 12
Views: 427
New Zealand

Re: Ignition Amplifier

Hi guys The amp from SNG does use the HEI chip the same as in the later cars, and the distributor is rebuilt to HEI spec, but with a vacuum module as per the original system. It’s easy to change to a vacuum advance module at a later stage. British vacuum can supply suitable ones. I can vouch for Bri...
by 42south
Sun Apr 15, 2018 9:35 am
Forum: Series 3
Topic: Ignition Amplifier
Replies: 12
Views: 427
New Zealand

Re: Ignition Amplifier

Hi Des If it is the original amplifier OPUS, probably still in the valley, or maybe shifted to the front rail, then don't waste your time fixing it, replace it with the later HEI amp and dizzy as fitted to the later V12's These can be sourced from wreckers. The OPUS is notoriously unreliable, and pr...
by 42south
Sun Mar 11, 2018 7:02 pm
Forum: Series 3
Topic: Am I a little hot?
Replies: 16
Views: 671
New Zealand

Re: Am I a little hot?

Hi My series 3 which has thermostats fitted, and a new radiator, runs with the needle on the R of normal, and never shifts much at all on the open road. If crawling in a line on a hot day it moves slightly towards the A. The fans come on just above the R. I did have a manual gauge fitted, and the R ...
by 42south
Fri Feb 23, 2018 6:13 am
Forum: Series 3
Topic: Manually setting the timing?
Replies: 5
Views: 443
New Zealand

Re: Manually setting the timing?

Hi guys Steve, I also fitted the SNG ignition upgrade, you’ll like it. A couple of things with it, they recommend a very conservative static timing setting, 8dtdc I think. When you figure out where TDC is you may wish to set 12 deg BTDC, which was the jaguar recommended setting. The distributor fron...
by 42south
Thu Feb 22, 2018 1:49 am
Forum: Series 3
Topic: Manually setting the timing?
Replies: 5
Views: 443
New Zealand

Re: Manually setting the timing?

Hi Why don't you make a double stop measuring device from an old spark plug. Knock out the center, and braize a nut to the top then use an appropriate sized bolt through the nut. This simple device will allow you to accurately find TDC on the No1 cylinder, front right. Then you could either make up ...