Search found 1268 matches

by MarekH
Thu Nov 24, 2022 6:04 pm
Forum: Series 3
Topic: Electronic ign. tacho problems
Replies: 8
Views: 628
Great Britain

Re: Electronic ign. tacho problems

Because they probably replace the electronics inside the unit rather than repair them. If you do a bit of research, you'll see a custom chip which is no longer available.

kind regards
Marek
by MarekH
Tue Nov 08, 2022 7:45 pm
Forum: Series 3
Topic: ARE THESE AVAILABLE ?
Replies: 4
Views: 495
Great Britain

Re: ARE THESE AVAILABLE ?

Is the broken part just a standard Wilmot & Breedon part? If so, then there will tons of old British sportscars which use the same basic lock parts.

kind regards
Marek
by MarekH
Tue Nov 08, 2022 5:55 pm
Forum: Series 3
Topic: Electronic ign. tacho problems
Replies: 8
Views: 628
Great Britain

Re: Electronic ign. tacho problems

The s3 was originally going to have either a 6cylinder or 12cylinder engine, so the loom reflects a crossover in requirements and there are a few quirky twists and turns if you look at where all of the components are mounted on a late 6cylinder car and an early v12 car. To get one of the white wire ...
by MarekH
Mon Nov 07, 2022 9:29 am
Forum: Technical
Topic: Gaz front coilovers (assisted)
Replies: 7
Views: 465
Great Britain

Re: Gaz front coilovers (assisted)

I don't think this even works from a technical point of view. Consider that you have not adjusted the torsion bar, but instead have simply raised the ride height with an extra spring onto the picture frame. Instead of taking a quarter of the weight of the car per side, the torsion bar is now totally...
by MarekH
Mon Oct 31, 2022 2:25 pm
Forum: Series 3
Topic: Ethanol in fuel carbs take a look
Replies: 10
Views: 1024
Great Britain

Re: Ethanol in fuel carbs take a look

That's exactly what it looks like. For a car that spends a lot of time laid up, the lighter fractions evaporate out and the thicker (and eventually sludgier) remains remain. The water jacket behind the carburettors has a pocket where the thicker elements of fuel condense down to during startups. Thi...
by MarekH
Sat Oct 15, 2022 5:40 pm
Forum: Series 3
Topic: Dizzy - Plugs - leads
Replies: 12
Views: 1671
Great Britain

Re: Dizzy - Plugs - leads

...but also aware these things are setup as pairs. You only need one port to get a vacuum signal for your distributor. The reason they got used in pairs was because the port was not used for its vacuum signal, but rather as where exhaust gas recirculation was fed back into the input. I wondered why...
by MarekH
Wed Oct 12, 2022 6:40 am
Forum: Series 3
Topic: Starter motor not disengaging
Replies: 28
Views: 8180
Great Britain

Re: Starter motor not disengaging

The obvious answer is that Ole doesn't have a standard flywheel but has replaced that aswell.
kind regards
Marek
by MarekH
Mon Oct 03, 2022 12:18 pm
Forum: Technical
Topic: 1969 vacuum check valve question
Replies: 3
Views: 386
Great Britain

Re: 1969 vacuum check valve question

It holds vacuum for the brakes. Whenever the air pressure in the manifold is lower than in the vacuum tank, the one way valve evacuates any remaining air from the tank/reservoir used to give you vacuum assist for the brakes again next time you stab the brakes. Without it, the amount of vacuum assist...
by MarekH
Tue Sep 27, 2022 2:07 pm
Forum: Series 3
Topic: Rear spring and u-joint clearance
Replies: 7
Views: 628
Great Britain

Re: Rear spring and u-joint clearance

Take a look to see what the undamaged side looks like and figure out why the bad side is asymmetric to the good side. gap.png Also, assuming the second photo is looking upwards, it looks like you may have a collet missing - it may be the angle, but I don't understand what the gap circled is. The sho...
by MarekH
Mon Sep 26, 2022 12:00 pm
Forum: Series 3
Topic: Deteriorating Starting Performance
Replies: 5
Views: 750
Great Britain

Re: Deteriorating Starting Performance

If the resistance in the wiring/connectors or through through the ballast resistor is excessive, then starting performance will be impaired. The ballast resistor circuit has two components:- during normal running it lowers the voltage (and controls that voltage) to the coil; during starting it allow...
by MarekH
Fri Sep 23, 2022 11:09 am
Forum: Series 3
Topic: Vacuum feed?
Replies: 3
Views: 740
Great Britain

Re: Vacuum feed?

The bottom of the left rear carburettor was originally connected to the distributor vacuum retard capsule to retard the ignition at idle.

kind regards
Marek
by MarekH
Fri Sep 23, 2022 11:04 am
Forum: Series 3
Topic: Deteriorating Starting Performance
Replies: 5
Views: 750
Great Britain

Re: Deteriorating Starting Performance

It's still true for a hot start, but the magnitude difference is not as great. Starting an engine is a very heavy load, whereas idling the same engine is a lighter load. For a fuel injected engine, about 20-15mSec worth of fuel at very low temperatures is needed per cylinder, but only 7mSec of fuel ...
by MarekH
Thu Sep 22, 2022 4:40 pm
Forum: Series 3
Topic: Deteriorating Starting Performance
Replies: 5
Views: 750
Great Britain

Re: Deteriorating Starting Performance

Dear Nigel, The only "fuel" difference between starting and running is the use of the choke. To start a car you need more air and more fuel than you do to keep it running. So logically, that'd be where to start looking. Assuming you are not delivering enough fuel via the choke, or the throttle is no...
by MarekH
Wed Sep 07, 2022 5:33 am
Forum: Technical
Topic: DIFF. better 3,07 or 2,88 for 2+2?
Replies: 42
Views: 2157
Great Britain

Re: DIFF. better 3,07 or 2,88 for 2+2?

You've all only looked at half of the picture and forgotten that not all 1st gears are equal . If you have a KPN or KFN overdrive gearbox fitted, then you can have the low rpm at high speed and get off of the line aswell. The other factor to consider is camshaft choice:- the more "high rpm" the cams...
by MarekH
Tue Sep 06, 2022 12:06 pm
Forum: General
Topic: 1973 S3 OTS to Restore
Replies: 10
Views: 646
Great Britain

Re: 1973 S3 OTS to Restore

I think I may have misread your original post. The car colour will be whatever the hidden interior car colour was (ditto for what is under the underseal), assuming these were never repainted. The interior trim colour may well have been black, but the boot trim was always "biscuit". Yellow primer was...
by MarekH
Mon Sep 05, 2022 7:37 pm
Forum: General
Topic: 1973 S3 OTS to Restore
Replies: 10
Views: 646
Great Britain

Re: 1973 S3 OTS to Restore

The car was black:- the yellow coloured primer (coincidentally similar to primrose) is the lowest (first) coat of paint put on by the factory.

The boot trim is original. They were all that colour in the boot.

kind regards
Marek
by MarekH
Mon Aug 29, 2022 7:03 am
Forum: Series 2
Topic: Heater Resistor
Replies: 8
Views: 1034
Great Britain

Re: Heater Resistor

Am I correct in thinking that this resistor effectively drops the voltage across the motor to give the slower speed setting? Yes I assumed by the nature of the resistor type, it is effectively a power resistor and hence would get pretty hot as your post suggests? Yes You should consider gluing to b...
by MarekH
Sun Aug 28, 2022 8:12 am
Forum: Series 2
Topic: Heater Resistor
Replies: 8
Views: 1034
Great Britain

Re: Heater Resistor

You can glue it back together if you want to, but bear in mind that it'll get VERY HOT and probably come apart again, so it may be difficult to find a high temperature glue that works on ceramic. You also don't want to do it in a way which provides a combustible material for when the next mishap hap...
by MarekH
Sun Aug 21, 2022 11:29 am
Forum: Series 3
Topic: Auto to manual pedal box conversion
Replies: 9
Views: 1000
Great Britain

Re: Auto to manual pedal box conversion

Yes you can modify a pedal. It may even be the best way forward, as anything you buy from one of the usual suppliers will be a reproduction. As such, if they drill the hole for the clevis pin in even just slightly the wrong position, then it'll force the pushrod to travel over a wider arc and perhap...
by MarekH
Sat Aug 20, 2022 9:15 pm
Forum: Technical
Topic: 3AW relay
Replies: 5
Views: 687
Great Britain

Re: 3AW relay

The 3aw is a relay which expects 7.5v ac on its AL terminal to flow through to the chassis via its E terminal. When that happens it disconnects WL from E. That means a circuit is broken, so the 12v ignition light bulb loses its path to earth and extinguishes. If the 3aw resistances check out, then t...