Search found 506 matches

by johnetype
Sun May 31, 2026 9:17 pm
Forum: Series 1
Topic: 2+2 windscreen seals
Replies: 5
Views: 285
Great Britain

Re: 2+2 windscreen seals

Based on my experience, you need both. The main seal comes (from COH Baines) to a set length with the ends welded/glued together which is what you need to prevent leaks. The second seal is the locking strip which is sold by the meter. Here you need to make sure you have enough because you want your ...
by johnetype
Sun May 31, 2026 8:15 am
Forum: Technical
Topic: Fuel Pump
Replies: 4
Views: 270
Great Britain

Re: Fuel Pump

From my experience with the same pump, no, nothing to worry about.
by johnetype
Sun Apr 19, 2026 9:16 pm
Forum: Technical
Topic: 1964 3.8 Cylinder head temperature
Replies: 8
Views: 1933
Great Britain

Re: 1964 3.8 Cylinder head temperature

That type of infra-red temperature gun generally measure the average temperature within a circle whose diameter is dictated by how far the gun is from the surface in question - not just at the point the red dot is. Given how far away you appear to be from the cam covers I strongly suspect their actu...
by johnetype
Mon Apr 06, 2026 8:06 am
Forum: Technical
Topic: Washer jet replacement..
Replies: 3
Views: 1328
Great Britain

Re: Washer jet replacement..

Use jets from a 2+2 that have two jets each. Use silicon rather than PVC washer hose. Find someone with small hands to help. Connect the hose to the jet and feed the hose in from outside the car. Slide the nut back up along the hose from the inside so the hose guides the nut onto the end of the jet....
by johnetype
Mon Feb 23, 2026 9:58 pm
Forum: Technical
Topic: SU fuel pump circuit breaker spark
Replies: 4
Views: 1865
Great Britain

Re: SU fuel pump circuit breaker spark

Varistor or capacitor, both will do a similar job in this application. If you were to use a large non polarised capacitor such as those across the input to a power supply your pump would remain polarity insensitive. A capacitor would be a better choice for suppressing RF radiation so would be my cho...
by johnetype
Tue Jan 27, 2026 9:55 am
Forum: Series 2
Topic: Cylinder Head Woes
Replies: 16
Views: 28921
Great Britain

Re: Cylinder Head Woes

That story has been around for a few years now. Whilst there are undoubtably fakes around I'm more dubious that the major suppliers have been taken in, in any significant way. There are videos out there comparing fakes with originals and in the ones I've seen the fakes are pretty obvious with errors...
by johnetype
Thu Jan 15, 2026 8:10 pm
Forum: Technical
Topic: Use of ChatGpt for diagnostics?
Replies: 8
Views: 7990
Great Britain

Re: Use of ChatGpt for diagnostics?

The cautionary warnings are justified up to a point but also the Luddites are out in force on the use of AI. AI is basically searching and scraping information for you across the internet and then aggregating it. When your source(s) are likely to be limited such as for a car like an E type then as s...
by johnetype
Sat Dec 13, 2025 9:08 am
Forum: Series 2
Topic: Cooling fan not working
Replies: 5
Views: 2890
Great Britain

Re: Cooling fan not working

No one has been in there before, I've owned the car for too long. Whatever it is it is certainly not high quality and over the years the ends of the springs pull through it and let go.

Producing a plastic based replacement is a great 3D printing opportunity.
by johnetype
Fri Dec 12, 2025 10:04 pm
Forum: Series 2
Topic: Cooling fan not working
Replies: 5
Views: 2890
Great Britain

Re: Cooling fan not working

Before consigning the failed fan motor to the bin and forking out a significant sum for a replacement, remove the rear cover and check the piece of cardboard - yes I kid not - that holds the tension springs together that keep the brushes on the commutator - or not.
by johnetype
Fri Dec 12, 2025 9:57 pm
Forum: Series 1
Topic: Front wing seperators
Replies: 6
Views: 2213
Great Britain

Re: Front wing seperators

And given the rust trap this particular area is, I used nylon washers when I rebuilt my bonnet.
by johnetype
Thu Nov 27, 2025 9:06 am
Forum: Series 1
Topic: In-tank fuel pump
Replies: 5
Views: 2524
Great Britain

Re: In-tank fuel pump

There are no benefits to using an in tank fuel pump as configured by Jaguar. They moved to an external pump - a tried and tested SU of sufficient capacity - as soon as possible, and you should do the same. Fuel smells should not be linked to pump position. With appropriate quality hose and fittings,...
by johnetype
Thu Nov 13, 2025 12:00 pm
Forum: Welcome!
Topic: New member introduction
Replies: 4
Views: 6223
Great Britain

Re: New member introduction

Unless you know the original engine is toast, I wouldn't leap in to a full rebuild costing £10,000+ especially if you are trying to keep a tight control on costs which at today's prices could easily exceed the value of the car. I'd be removing the cylinder head and the sump and giving the internals ...
by johnetype
Fri Oct 17, 2025 7:27 am
Forum: Technical
Topic: pre-programmed curves on 123 ignition - help please?
Replies: 145
Views: 133708
Great Britain

Re: pre-programmed curves on 123 ignition - help please?

The Stromberg carburettors are linked to meeting US emissions specifications with distributor timing curves also dictated by meeting emissions specs. Running Strombergs here in the UK is just the same as running SUs assuming you've drilled for a vacuum advance take-off, removed or permanently wired ...
by johnetype
Wed Oct 15, 2025 10:12 pm
Forum: General
Topic: Attention....loss of Images
Replies: 41
Views: 19713
Great Britain

Re: Attention....loss of Images

to add to number 2 above: Some sites log the IP addresses that VPNs use and automatically block accesses coming in through them. One of the major car forum software suppliers use this technique as a simple SPAM protection measure on the premise that spammers use VPNs to hide their activities. The BB...
by johnetype
Sun Aug 10, 2025 9:17 pm
Forum: Technical
Topic: Stone chip protection on the external boot
Replies: 4
Views: 1433
Great Britain

Re: Stone chip protection on the external boot

There is no "definitive" not least because the factory didn't apply the stuff. Over the years the nature of the product has improved to be much less visible so unless you're in the concours game it's used much more than it was. Taking the clue from the name you want it to be where stone chips are go...
by johnetype
Sun Aug 10, 2025 4:15 pm
Forum: Technical
Topic: Track rod ends despair.
Replies: 122
Views: 193527
Great Britain

Re: Track rod ends despair.

Just for completeness, I measured the original Girling front SAs from my '69 Series 2 FHC and they are 405mm extended.

They came with the car at 20 years old and 48,000 miles so I can be fairly confident they are the originals.
by johnetype
Thu Jul 24, 2025 3:04 pm
Forum: Technical
Topic: Oil Pressure Gauge
Replies: 13
Views: 18190
Great Britain

Re: Oil Pressure Gauge

There's a good description of how the oil pressure gauge and sender work on pages P51 and 52 of the service manual. An original sender will show infinite ohms between the contact and the body when there is no oil pressure (may not be true for some of the more modern "substitutes" but it is for the o...
by johnetype
Mon Jul 21, 2025 5:38 pm
Forum: Technical
Topic: Oil Pressure Gauge
Replies: 13
Views: 18190
Great Britain

Re: Oil Pressure Gauge

The oil pressure gauge should not be connected to the output from the voltage regulator. Only the temperature gauge and fuel gauge are supplied by the voltage regulator. The oil pressure gauge should be connected to an ignition switched +12 volts as per the wiring diagram. The confusion often arises...
by johnetype
Sat Jul 19, 2025 8:08 am
Forum: Technical
Topic: Fitting a Dynamator to a positive earth car
Replies: 43
Views: 57394
Great Britain

Re: Fitting a Dynamator to a positive earth car

In the drawing I get linked to the voltmeter version means that the voltmeter is permanently energised. Not in itself a problem except that the voltmeter draws around 100mA so will flatten your battery in around a week. The voltmeter needs to be connected to a feed energised by the ignition switch. ...
by johnetype
Sun Jul 13, 2025 11:24 pm
Forum: Technical
Topic: Aliexpress ignition system for 6 cylinders Lucas distributor
Replies: 3
Views: 4480
Great Britain

Re: Aliexpress ignition system for 6 cylinders Lucas distributor

I've got a Chinese distributor, mine came from Simon BBC. It works fine and gave me my first chance to add a distributor with vacuum advance. I keep it in the car as a spare. I suggest you source a secondhand Lucas constant energy distributor and coil from a Series 3 XJ6 or move to a 123 or similar ...