Search found 567 matches

by Tom W
Wed Nov 02, 2022 7:21 am
Forum: Technical
Topic: 1965 COUPE STOCK REAR SPRINGS AND SHOCKS NOT SNG
Replies: 20
Views: 894
Great Britain

Re: 1965 COUPE STOCK REAR SPRINGS AND SHOCKS NOT SNG

Agreed, a lot of miss information there. I think most of us agree, but for clarity, there are three things combined that go together to make up the rear ride height on an E-type. 1. The distance from the top eyelet to the top spring perch. 2. The laden length of the spring 3. The distance from the b...
by Tom W
Mon Oct 31, 2022 7:31 pm
Forum: Technical
Topic: 1965 COUPE STOCK REAR SPRINGS AND SHOCKS NOT SNG
Replies: 20
Views: 894
Great Britain

Re: 1965 COUPE STOCK REAR SPRINGS AND SHOCKS NOT SNG

Rear dampers do affect ride height as they’re coil overs. Specifically the relationship between the spring seats and the eyelets needs to be correct. It’s the same principle as using adjustable platform dampers to adjust the ride height.
by Tom W
Sun Oct 30, 2022 6:57 am
Forum: Series 2
Topic: Series 2 Steering Column question
Replies: 6
Views: 387
Great Britain

Re: Series 2 Steering Column question

I should add to this that even if you do shear the nylon and try to dismantle it, it won’t come apart. I once had one that was broken and tried to dismantle it to see if it was possible to fix. It looks like it’s assembled by posting the inner bit in from the other end of the outer, then welding a p...
by Tom W
Sun Oct 30, 2022 6:50 am
Forum: Series 2
Topic: Series 2 Steering Column question
Replies: 6
Views: 387
Great Britain

Re: Series 2 Steering Column question

The lower column is in two haves so it’s able to collapse in the event of an accident. It can’t be separated into two halves. It’s held together by nylon shear pins. If you try and dismantle it, you’ll break the nylon. As far as I know, no one’s able to replicate the original manufacturing process a...
by Tom W
Sun Oct 16, 2022 7:23 am
Forum: Technical
Topic: DCOE equipped E-Type popping and farting excessively
Replies: 46
Views: 2856
Great Britain

Re: DCOE equipped E-Type popping and farting excessively

You can get closer to identify the correct advance curve with some experimentation. However, it does come with some risk that if you get it wrong and add too much you can damage the engine. You have 16 curves to pick from, and can also move the static timing, so there is some scope for adjustment bu...
by Tom W
Sat Oct 15, 2022 1:09 pm
Forum: Technical
Topic: DCOE equipped E-Type popping and farting excessively
Replies: 46
Views: 2856
Great Britain

Re: DCOE equipped E-Type popping and farting excessively

Engines fitted with Webers can benefit from more advance at lower rpms, but the maximum total advance should remain the same.

How much is best determined on a rolling road or engine dyno. Whether the correct curve can be achieved with the pre-programmed 123 is another matter.
by Tom W
Sat Oct 15, 2022 6:45 am
Forum: Technical
Topic: DCOE equipped E-Type popping and farting excessively
Replies: 46
Views: 2856
Great Britain

Re: DCOE equipped E-Type popping and farting excessively

Have you checked the basics are correct before pulling the engine apart or spending more money at a specialist? Float levels. Are they equal and at the correct height? They don’t necessarily come set right out of the box, and in my experience specialists don’t always check the basics before diving i...
by Tom W
Wed Aug 17, 2022 11:25 am
Forum: Technical
Topic: Oil pump / distributor gear replacement
Replies: 11
Views: 1834
Great Britain

Re: Oil pump / distributor gear replacement

I never did attempt to replace the drive gear. I made some more adjustments and maintenance on the carbs which improved the idle quality. I expect the timing is still able to fluctuate as nothing I did will have remove any of the free play. However, a smoother idle will give a more constant input in...
by Tom W
Wed May 25, 2022 6:11 am
Forum: Technical
Topic: A mixture question
Replies: 24
Views: 2316
Great Britain

Re: A mixture question

What colour is the smoke from the exhaust?
by Tom W
Fri Mar 18, 2022 4:29 pm
Forum: General
Topic: E type dress code
Replies: 4
Views: 1163
Great Britain

Re: E type dress code

I wouldn’t care to go anywhere where that’s the appropriate dress code.
by Tom W
Tue Dec 21, 2021 10:13 am
Forum: Technical
Topic: E type Roll Centre and Handling
Replies: 88
Views: 13777
Great Britain

Re: E type Roll Centre and Handling

Yes, that’s my understanding of it. The only point that may be not quite right is my assumption that the static position for the radius arm is truly horizontal and therefore longest. I am writing this from the comfort on the house, rather than going out to the garage to properly check. There are so ...
by Tom W
Fri Dec 17, 2021 6:54 pm
Forum: Technical
Topic: E type Roll Centre and Handling
Replies: 88
Views: 13777
Great Britain

Re: E type Roll Centre and Handling

The way the original IRS works is really quiet tricky to visualise, and trickier to describe. Considering the IRS as a stand-alone unit, the uprights are free to move through bump and rebound, relative to the cage. Because all the pivots are bearings, not compliant bushes, there’s no option for chan...
by Tom W
Fri Nov 26, 2021 5:57 pm
Forum: Technical
Topic: IRS rebuild required, can anyone recommend a UK specialist in south of England?
Replies: 17
Views: 2031
Great Britain

Re: IRS rebuild required, can anyone recommend a UK specialist in south of England?

You can remove the coil over assemblies individually, or as a set without having to remove the IRS (assuming the upper bolts are put in from the correct side). To replace just the dampers, you’ll need to separate them from the coil springs after removing the complete coil over assemblies from the ca...
by Tom W
Wed Sep 22, 2021 6:26 pm
Forum: Technical
Topic: Brake light switch
Replies: 8
Views: 1241
Great Britain

Re: Brake light switch

I believe the Jaguar switch is 1/8” NPT tapered. This is 27 TPI, or a pitch of 0.941mm. The metric thread pitch 1mm, or 25.4 TPI. Not that close really. For example, with a 1/4” thread engagement, there’s a mismatch of just under 1/2 of a tooth.
by Tom W
Wed Sep 22, 2021 3:54 pm
Forum: Technical
Topic: Brake light switch
Replies: 8
Views: 1241
Great Britain

Re: Brake light switch

What thread is the MGB switch? Despite being used across various British cars, and looking superficially similar, there are several thread sizes BSP, NPTF, UNF etc. If you get the wrong one, you risk damaging the thread in the union and/or having the joint leak. I’m not sure about the MGB, but for E...
by Tom W
Tue Sep 07, 2021 6:15 am
Forum: Series 1
Topic: S1 4.2 Service Manual
Replies: 13
Views: 1678
Great Britain

Re: S1 4.2 Service Manual

The S2 manual will only have the late hydraulic circuit.
by Tom W
Mon Aug 30, 2021 4:45 pm
Forum: Technical
Topic: S1 1.5 Diff.
Replies: 12
Views: 2097
Great Britain

Re: S1 1.5 Diff.

With the rear wheels in the air, rotate one wheel. If the other wheel rotates freely the opposite direction then it’s an open diff. If both wheels rotate easily the same way, and the propshaft turns, then it’s a LSD. You can confirm by putting the car in gear. With an open diff, you’ll still be able...
by Tom W
Fri Aug 27, 2021 10:51 am
Forum: Technical
Topic: E type Roll Centre and Handling
Replies: 88
Views: 13777
Great Britain

Re: E type Roll Centre and Handling

Yes, a shame. I thought it was an interesting topic, even though it’s not something I’m about to substantially change on my own car.
by Tom W
Tue Aug 24, 2021 7:58 pm
Forum: Technical
Topic: E type Roll Centre and Handling
Replies: 88
Views: 13777
Great Britain

Re: E type Roll Centre and Handling

Are you intending to increase the stiffness of the body shell as part of the suspension modifications?
by Tom W
Tue Aug 24, 2021 8:14 am
Forum: Technical
Topic: 4.2 3x45 Webber’s running 12 deg advance?
Replies: 15
Views: 1802
Great Britain

Re: 4.2 3x45 Webber’s running 12 deg advance?

Unfortunately trying to recommend a non standard ignition setting by diagnosing a car over the internet is a gamble at best. All anyone can do is say what’s worked for them, or repeat what they’ve read elsewhere. I found my car on Weber’s responded better low down to more ignition advance, but that’...