Search found 387 matches

by jagwit
Sat Sep 14, 2019 4:13 pm
Forum: Series 3
Topic: Not a dizzy anymore
Replies: 3
Views: 111
South Africa

Re: Not a dizzy anymore

Which coils will you be using Colin?
by jagwit
Thu Sep 12, 2019 7:20 am
Forum: Series 3
Topic: Which connector is this?
Replies: 8
Views: 255
South Africa

Re: Which connector is this?

Hi Michel My car is parked at my local Jag dealer but I will try to pop around to get pics for you. I use the original fans. There is IMO no need for high power VW fans or the high speed they offer .... IF .... the cooling system as a whole is good and correct. Consider that my car has aircon and is...
by jagwit
Wed Sep 11, 2019 6:33 pm
Forum: Series 3
Topic: Which connector is this?
Replies: 8
Views: 255
South Africa

Re: Which connector is this?

Unless you are going for 100% originality, I made a replacement plate from 10mm alu with a modern fan switch - which takes 6mm spade lugs.
by jagwit
Sat Aug 31, 2019 4:23 pm
Forum: Series 3
Topic: Missing timing marks!!
Replies: 2
Views: 211
South Africa

Re: Missing timing marks!!

Hi all, just fitted aSNG ignition kit, all went okay until it was time to set the ignition timing... I have no timing plate, I can find the A1 mark on the pulley , but I have nothing to set it against!!! The obvious thing to do is to get the timing plate that SHOULD be mounted below the crank pulle...
by jagwit
Mon Aug 26, 2019 6:24 pm
Forum: Series 3
Topic: V12 ECU
Replies: 12
Views: 490
South Africa

Re: V12 ECU

When I converted my S3 to EFI, I mounted the ECU (Megasquirt in my case) to the "ceiling" of the passenger footwell. Fit an easily removeable cover over it to prevent passengers from kicking the connector to the ECU.
by jagwit
Mon Aug 26, 2019 6:18 pm
Forum: Series 3
Topic: V12 ECU
Replies: 12
Views: 490
South Africa

Re: V12 ECU

Found some nice Amphenol connectors from a catalog here: http://www.amphenol-industrial.com/literature/catalogs
Amphenol connectors.png
Amphenol connectors.png (99.63 KiB) Viewed 404 times
by jagwit
Mon Aug 26, 2019 6:01 pm
Forum: Series 3
Topic: V12 ECU
Replies: 12
Views: 490
South Africa

Re: V12 ECU

Without a doubt, re-terminating the wires right on the connector pins is 1st prize. I have never looked at the connector with that in mind and can not advise on the feasibility of doing so. I would want to have a second connector on hand in case replacement pins are needed. A safer option is simply ...
by jagwit
Wed Aug 07, 2019 11:26 am
Forum: Series 3
Topic: Tuning Problems V12
Replies: 46
Views: 2434
South Africa

Re: Tuning Problems V12

SESH wrote:
Wed Aug 07, 2019 11:17 am
so that I can mount it forward of the picture frame in cooler air.
Where the radiator fans will be blowing directly onto it? Genuine question: I wonder what the temp of that air coming out the radiator fans is on a hot day.... Note to self: Measure this next chance I get.
by jagwit
Wed Aug 07, 2019 10:54 am
Forum: Series 3
Topic: Tuning Problems V12
Replies: 46
Views: 2434
South Africa

Re: Tuning Problems V12

I am a bit baffled by Mark's ignition overheating issue. :scratchheadyellow: About 2 years ago, I recommissioned an S3 FHC for a friend. This ended up just short of a full rebuild. The car was delivered with a botch job of an ignition system but I had an HE ignition system in stock complete with dis...
by jagwit
Mon Aug 05, 2019 10:49 pm
Forum: Series 3
Topic: Tuning Problems V12
Replies: 46
Views: 2434
South Africa

Re: Tuning Problems V12

All fitted, cranked the engine but it won't fire, no attempt at all. No spark from the coil to the distributor. . . However the Purple connects to Black and the Black connects to Red. I would have thought that black should connect to black. But I could be wrong. *Eish!! It never stops does it... It...
by jagwit
Tue Jul 23, 2019 3:44 pm
Forum: Series 3
Topic: Air INtake Temperature Sensor - Mounted
Replies: 3
Views: 285
South Africa

Re: Air INtake Temperature Sensor - Mounted

Did you test if they still work?
by jagwit
Fri Jul 19, 2019 7:30 am
Forum: Series 3
Topic: Tuning Problems V12
Replies: 46
Views: 2434
South Africa

Re: Tuning Problems V12

I also wondered if it was worth swapping out the coil for a new one. EXTREMELY unlikely to be the problem. It would be worth swapping it out for the RIGHT one (if current coil is not correct). A coil is not just a coil. To be able to charge a coil for 6000RPM on a V12 from a single coil (600 sparks...
by jagwit
Thu Jul 18, 2019 2:33 pm
Forum: Series 3
Topic: Tuning Problems V12
Replies: 46
Views: 2434
South Africa

Re: Tuning Problems V12

The bottom line is that mixing electronics and high heat is NEVER a good idea. With a Series 3 rebuild I did for a friend, I mounted the AB14 amp (of an HE ignition system) right there inside the V where the OPUS amp was installed. This car drove faultlessly in > 38ºC temperatures with a tail wind. ...
by jagwit
Thu Jul 18, 2019 2:22 pm
Forum: Series 3
Topic: Tuning Problems V12
Replies: 46
Views: 2434
South Africa

Re: Tuning Problems V12

I have had exactly the same issue and it turned out to be the SNG Amplifier going the same way as the original OPUS system AMP. That is really disappointing!! However, I am aware that modern IGBT's (transistors specifically meant for inductive kickback applications) have built-in self-protection me...
by jagwit
Mon Jul 15, 2019 7:18 pm
Forum: Series 3
Topic: Tuning Problems V12
Replies: 46
Views: 2434
South Africa

Re: Tuning Problems V12

It will idle at a constant RPM, then after a run it will change. It doesn't fluctuate at idle. Mike That tells me that the butteflies don't return to the exact same position after they were operated by the throttle mechanism. Either they are sticking or play in the throttle linkages is not consiste...
by jagwit
Mon Jul 15, 2019 6:53 pm
Forum: Series 3
Topic: Tuning Problems V12
Replies: 46
Views: 2434
South Africa

Re: Tuning Problems V12

SESH wrote:
Mon Jul 15, 2019 6:34 pm
It tends to now idle between 600-1000 RPM but it varies a bit.
Does the idle speed vary like that as it stands there, idling, just being left alone? Or does it choose a new idle speed every time after throttles were operated?
by jagwit
Mon Jul 08, 2019 7:39 am
Forum: Series 3
Topic: V12 not running right - new SNG Barrat ignition
Replies: 10
Views: 1002
South Africa

Re: V12 not running right - new SNG Barrat ignition

I only drove it 4 houses down and back and forth so i didn't go far.
I find that my car is also rather down on performance until its off the choke AND the carbs have some heat in them. So do not expect full performance with a cold engine.
by jagwit
Mon Jul 08, 2019 7:36 am
Forum: Series 3
Topic: V12 not running right - new SNG Barrat ignition
Replies: 10
Views: 1002
South Africa

Re: V12 not running right - new SNG Barrat ignition

Lack of vacuum advance typically makes an engine feel lethargic on partial throttle. But with "only 40hp", I tend to agree with Simon that IF carb tuning and timing is good, most likely you have air supply issue. I had this issue when rebuilding a S3 for a friend. Turned out the vertical shafts were...
by jagwit
Fri Jul 05, 2019 6:43 am
Forum: Series 3
Topic: V12 not running right - new SNG Barrat ignition
Replies: 10
Views: 1002
South Africa

Re: V12 not running right - new SNG Barrat ignition

I'm not quite sure what your definition of low compression is, but the V12 in any of its guises is not in my book anywhere near low compression at 10:1 with the Heron heads and 12.5:1 with the May heads . However, I would not differ greatly from your 12 deg BTDC at idle, provided that it does not c...
by jagwit
Thu Jul 04, 2019 7:47 am
Forum: Series 3
Topic: V12 not running right - new SNG Barrat ignition
Replies: 10
Views: 1002
South Africa

Re: V12 not running right - new SNG Barrat ignition

I believe the SNG kit comes with a vacuum RETARD module (vacuum connection on dissy side of the "flying saucer") on the dissy as per the original V12 setup. This vacuum retard setup was Jaguar's solution to meeting the emissions targets OF THOSE DAYS, and is, in my view, an abomination just as scand...