Search found 962 matches

by MarekH
Sun Jan 10, 2021 10:58 am
Forum: Series 2
Topic: oil pressure sender
Replies: 26
Views: 1863
Great Britain

Re: oil pressure sender

The only thing the braid is bringing to the party here is some abrasion protection and possibly a little heat insulation. The hose underneath is probably nylon anyway. At the pressures generated, it isn't a case of stopping the hose from ballooning out and thus under reporting the pressure. Nylon is...
by MarekH
Sun Jan 10, 2021 10:23 am
Forum: Technical
Topic: Removing silt and limescale from radiator
Replies: 27
Views: 996
Great Britain

Re: Removing silt and limescale from radiator

Of course, theses things are only effective at removing limescale (acid dissolves alkaline) so don't necessarily expect them to remove solidified sediment and sludge, which is more likely to give you cooling and circulation problems. Not quite. Try "acid+base=salt+water". Acids don't dissolve anyth...
by MarekH
Thu Jan 07, 2021 7:30 pm
Forum: General
Topic: £300K Series 3 anyone ?
Replies: 22
Views: 761
Great Britain

Re: £300K Series 3 anyone ?

If you fit a s1 back end to the car, then the smaller s1/2 fuel tank will have to be fitted and range will drop. The s3 does at best ~17mpg and a more typical number will be 12mpg. Given the "power upgrade", this engine will drink fuel so I'd estimate the range to be under 180 miles. You can have mo...
by MarekH
Wed Jan 06, 2021 9:15 pm
Forum: Technical
Topic: High beam problem
Replies: 26
Views: 1293
Great Britain

Re: High beam problem

Dear Yves, You are suggesting that the five way connector insulation has been compromised, so remove the five way connector (complete with its five female connectors) and test the resistance from each female connector to every other female connector. They should all be infinite resistance to each ot...
by MarekH
Sun Jan 03, 2021 9:13 am
Forum: Series 3
Topic: S3 Fuel Expansion Tank
Replies: 15
Views: 1562
Great Britain

Re: S3 Fuel Expansion Tank

IIRC, it does feature in the Parts Manual. There is also a full explanation in the tan coloured US Owners Manual, which has extra pages that the same Blue UK booklet does not.

kind regards
Marek
by MarekH
Sun Jan 03, 2021 9:09 am
Forum: General
Topic: Classic Motoring Magazines.
Replies: 13
Views: 741
Great Britain

Re: Classic Motoring Magazines.

Dear Barry, I am waiting for the day when an "ugly" rubber bumpered but original US s3 beats a nice shiny faux covered headlight s1.5 "restoration" (which is so obviously covered in new epoxy 2pack paint) in a concours competition. It'll never happen, but we live in hope. I just tell people mine is ...
by MarekH
Sat Jan 02, 2021 4:01 pm
Forum: Welcome!
Topic: Possible Stolen E Type
Replies: 26
Views: 1704
Great Britain

Re: Possible Stolen E Type

I can't see any harm (intended or otherwise) in this thread. If someone doesn't know quite what is going on, then why not ask? For starters, they may not have realised that there may well never have been a number plate on the front and if the number plate on the back appears to be from a saloon, not...
by MarekH
Sun Dec 20, 2020 12:28 pm
Forum: Series 3
Topic: Exhaust manifold seal rings
Replies: 10
Views: 831
Great Britain

Re: Exhaust manifold seal rings

It's probably just that white paste/gum that is used on exhaust manifold gaskets. You could have added some more and just sealed it up again. There is in fact no need to ever separate the manifolds from the downpipe anyway. You can leave all three pieces connected until the fateful day when one of t...
by MarekH
Sat Dec 19, 2020 11:58 am
Forum: Series 1
Topic: Lucas 2FP pump
Replies: 18
Views: 2028
Great Britain

Re: Lucas 2FP pump

The standard Bosch centrifugal pumps as used in the XJS are full of fuel and lack of fuel, or even simply too hot fuel, will kill the pump as it will overheat without "coolant" continuously flowing through it. The is no risk of fire as there is no air for the fuel to burn in, notmuch scope for spark...
by MarekH
Fri Dec 18, 2020 8:44 am
Forum: Series 1
Topic: Lucas 2FP pump
Replies: 18
Views: 2028
Great Britain

Re: Lucas 2FP pump

When I initially dismantled it I noticed that petrol had been leaking into the motor housing. So testing it in a bucket of water wasn't really a very good idea, was it? You should have tested it using an inert fluid, rather than one which might conduct electricity. You wouldn't check whether the co...
by MarekH
Fri Dec 18, 2020 7:44 am
Forum: Series 3
Topic: What's This Relay?
Replies: 5
Views: 476
Great Britain

Re: What's This Relay?

The three pin relays work by having c2 common with w2, so when w1 is given a polarity opposite to c2, c2 becomes connected to c1, otherwise c1 remains unconnected to c2. In the case of this SBW relay, it has a c3 contact instead of a c1, so presumably does the exact opposite to what a standard 3pin ...
by MarekH
Wed Dec 16, 2020 9:49 am
Forum: Series 3
Topic: What's This Relay?
Replies: 5
Views: 476
Great Britain

Re: What's This Relay?

The SBW box sits right in the middle of the dash between the two banks of fuses. It has a circular plug going into the box and a "Smiths" label visible on its front face. The relay you show is part of the SBW system and is shown on the s3 wiring diagram from xkedata.com /resources in the dashed box ...
by MarekH
Sun Dec 13, 2020 12:40 pm
Forum: Series 3
Topic: Rad air control flaps
Replies: 29
Views: 1940
Great Britain

Re: Rad air control flaps

A central partition sounds like a very good idea. This is also the logic behind the fitting of the radiator foam over the shroud:- this forces air through the radiator as there is no easy path around instead. I shan't investigate further as I have used up my flow sensors to monitor the water flow th...
by MarekH
Sat Dec 12, 2020 12:45 pm
Forum: Series 3
Topic: Rad air control flaps
Replies: 29
Views: 1940
Great Britain

Re: Rad air control flaps

Without those flaps fans will suck air into tbose holes, not through the radiator. They must be fitted. That's only going to be true at low road speeds. If it were universally true, then you could just have a plain sealed box with no need for flaps at all. The true purpose of the flaps is more like...
by MarekH
Wed Dec 09, 2020 12:50 pm
Forum: Technical
Topic: Compression Test
Replies: 35
Views: 1447
Great Britain

Re: Compression Test

Thank you Pete - East German Degner discovered that altering the shape of the exhaust tube on a 2stroke helped "suck" the exhaust gases out of the combustion chamber more efficiently, so helping more incoming air into the cylinder and thus allowing them to create more power. The east Germans were no...
by MarekH
Tue Dec 08, 2020 1:05 pm
Forum: Technical
Topic: Compression Test
Replies: 35
Views: 1447
Great Britain

Re: Compression Test

Volumetric efficiency of the engine is going to be a complicated topic. The whole induction system and the exhaust and rpm will all influence this. People like Degma (Pete - insert tutoral here) discovered it was possible to take the volumetric efficiency above 100% and kept his 2stroke engines in t...
by MarekH
Sun Dec 06, 2020 6:02 pm
Forum: Series 2
Topic: Series 2 and 3 Headlamp chrome trims supplier?
Replies: 23
Views: 1494
Great Britain

Re: Series 2 and 3 Headlamp chrome trims supplier?

1/ Like I say, a twist and then a press is to 3D what a bend is in 2D, so maybe they are made from the right 2D shape but then handled the wrong way. 2/ It'll be polishing, then chroming, not the other way around. A strike coat of copper is put down and this is then polished to death if it is even e...
by MarekH
Sun Dec 06, 2020 5:15 pm
Forum: Series 2
Topic: Series 2 and 3 Headlamp chrome trims supplier?
Replies: 23
Views: 1494
Great Britain

Re: Series 2 and 3 Headlamp chrome trims supplier?

The interesting thing here is that it isn't the wing or centre section which defines this. Both of these panels are flexible around the headlight opening and only have two defined points where they have flanges - and hence rigidity. What defines the shape, and was very cheekily known by Jaguar, is t...
by MarekH
Sat Dec 05, 2020 8:41 pm
Forum: Technical
Topic: Intermittent rev counter
Replies: 8
Views: 475
Great Britain

Re: Intermittent rev counter

I'd look for a poor earth connection from the tacho board inside the tach to the tacho body and then to the outside world. This is probably via one of the studs that hold the circuit board inside the tacho, rather than by a wire with a decent solder tag and star washer to the chassis. After so many ...
by MarekH
Fri Dec 04, 2020 3:23 pm
Forum: Series 3
Topic: S3 wiring loom main bulkhead grommet
Replies: 7
Views: 452
Great Britain

Re: S3 wiring loom main bulkhead grommet

If enough people want them, then I might be tempted to do it at some future date. I had thought it was a no starter as nobody in their right mind would pay £45, but I might be wrong there.

kind regards
Marek