The 'E' Type Forum

G'day Phil, thx for info re exhausts. Not choosing, doing both. I've an LdN overdrive ready to bolt on. Also thinking of changing the diff ratio, currently 3.54, to either 3.31 or 3.07, the latter would maybe make the OD too long? Do u still have the 3.31 that u swapped out? U bagged it mercillesly ...

I've no experience of the Rob Beer large diameter pistons, I've read that large dia, short stroke revs better but makes head dissipation less efficient. Perhaps if u want to be radical y'd fit the RB pistons to a long-stroke (6L) engine? Instead I am preparing to upgrade to efi 5.3 HE 12.5:1 compres...

These may be helpful? Kirby Palm's tome (pages 153-157) includes owner experiences and troubleshooting tips for CEI/AB14 ignition system which is what the SNG system is? https://1drv.ms/b/s!AiSPBKa26IcchJgyI0COwjxZnCBnmQ Also, here is Jaguars tests to check this ignition amplifier: https://1drv.ms/b...

G'day Adrian! Short answer, Imo: Not a worthwhile investment, very rare for ballast resistor to ever be faulty, definitely aim to replace an Opus distributor. Long answer: 1. Do you have a workshop manual? If not, here is one: https://1drv.ms/b/s!AiSPBKa26IcchJoGD2wp_dEgALSoQA 2. Do you have a multi...

I should retract that comment as i don't know enough about the sng conversion. Has ballast resistor but unlike Opus doesn't need it? So is it just fake for looks? If it DOES need it then maybe the special low resistance coil needed also ....

My understanding, the SNG ignition is not Re-Opus, it is a Jaguar CEI ignition system shoe-horned into Opus amplifier casing and distributor body? That the distributor to use with CEI ignition is part # DAC6093?

Thx I was assuming based on the "loose valve guides" cause of the matching symptoms in my "how to read a vacuum gauge" guide. So now I suspect either valves loose in their guides or failed valve stem seals, the latter is logical, everything else plastic or rubber has had to be renewed, valve stem se...

Thanks Marek, I also noted you've removed the timing cover with the heads on, I read (Kirby Palm) that this is possible by destroying the studs connecting the head to the timing cover … so I am looking down from the top. I appear to have comfortable gap between the chain and the bolts that attach th...

There are different number of teeth on the front spline and on the back spline. This enables you to make fraction-of-a-spline adjustments. E.g. Front CW 3 and rear ACW 2 is different to Front CW 2 and rear ACW 1. There are different instructions for earlier and later cars. Cars earlier than 1S70413 ...

Thanks gents, I hadn't thought of thick petrol, seems likely when u look at it closely. And yes Peter, yr wager would be safe, apologies. Timing covers, valve guides, tappet clearances. Current status of of the open-heart surgery: https://i.postimg.cc/ZKmMddSf/20190212-205602.jpg Bad news, everythin...

Also seems to be a bit sooty in the inlet manifolds, is there a clever procedure for checking valve timing with just the timing covers removed?

If it's timing chain, to fix would require complete strip-down heads off, sump off ? Meanwhile I wonder, why might I have oil in the bottom of my inlets?

Down to Gippsland. Is a regular trip. Car is (has been) well and truly on the road, I've been talking about taking it off the road for years. 2019 is looking likely. Here is another vid, shows what happens when I remove vacuum. I've titled it "why I hate carbs". https://1drv.ms/v/s!AiSPBKa26IcchMMjK...

Um, pls can I have prognosis? Intended to head off tomorrow on a 1500 km round trip. But the clatter that I had always attributed to a loose tappet guide, which would go away after a while, doesn't go away anymore. And now its got worse and I seem to have lost most of my vacuum. The attached are lit...

Hello Phil. The performance curves I posted are not my cars, not even real, they are copied from automobile-catalog, this uses car dynamics simulation software i.e https://www.automobile-catalog.com/simulation.php

Hello Peter. Can you tell us what the “competition upgrade” comprises, specifically what is different to the OD that was fitted to Jaguar 4.2L XJ6’s? Do you know spring rates and materials?

For the o/drive option, I am in the process of this, reco’d Laycock de Normanville Compact type A unit is sitting on the bench waiting for me to get a round tuit. The same as was fitted to XJ6 S1 and S2 cars. You will find in the S3 forum that UK companies advertising expertise are of ODSpares in Ru...

Setting tool? JD43? Golly gosh… Curiously my otherwise reliable workshop manual specifies a 49.69 cm (19.563 inch) shock bolt setting, this was too much. What I ultimately adopted was 487 mm, i.e near as dammit yr 19.25 inches but without any preload. I was then able to adjust to specified ground cl...