Search found 131 matches

by lowact
Fri Mar 01, 2019 11:21 pm
Forum: Series 3
Topic: Capacity and compression ratio increase
Replies: 20
Views: 565
Australia

Re: Capacity and compression ratio increase

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 ...
by lowact
Fri Mar 01, 2019 8:00 am
Forum: Series 3
Topic: Capacity and compression ratio increase
Replies: 20
Views: 565
Australia

Re: Capacity and compression ratio increase

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...
by lowact
Mon Feb 25, 2019 11:14 am
Forum: Series 3
Topic: SNG Ignition System problems
Replies: 6
Views: 200
Australia

Re: SNG Ignition System problems

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...
by lowact
Fri Feb 22, 2019 11:52 am
Forum: Series 3
Topic: Ballast Resistor
Replies: 4
Views: 200
Australia

Re: Ballast Resistor

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...
by lowact
Fri Feb 15, 2019 10:56 pm
Forum: Series 3
Topic: replacement coil for SNG Re-Opus ignition
Replies: 4
Views: 237
Australia

Re: replacement coil for SNG Re-Opus ignition

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 ....
by lowact
Fri Feb 15, 2019 12:49 pm
Forum: Series 3
Topic: replacement coil for SNG Re-Opus ignition
Replies: 4
Views: 237
Australia

Re: replacement coil for SNG Re-Opus ignition

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?
by lowact
Fri Feb 15, 2019 12:38 pm
Forum: Series 3
Topic: Loose valve tappet guide or?
Replies: 19
Views: 492
Australia

Re: Loose valve tappet guide or?

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...
by lowact
Wed Feb 13, 2019 2:32 am
Forum: Series 3
Topic: Loose valve tappet guide or?
Replies: 19
Views: 492
Australia

Re: Loose valve tappet guide or?

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...
by lowact
Tue Feb 12, 2019 12:26 pm
Forum: Series 3
Topic: Help! Torsion Bar Quandry
Replies: 11
Views: 539
Australia

Re: Help! Torsion Bar Quandry

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 ...
by lowact
Tue Feb 12, 2019 11:15 am
Forum: Series 3
Topic: Loose valve tappet guide or?
Replies: 19
Views: 492
Australia

Re: Loose valve tappet guide or?

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...
by lowact
Tue Feb 12, 2019 1:54 am
Forum: Series 3
Topic: ohms
Replies: 4
Views: 189
Australia

Re: ohms

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by lowact
Sun Feb 10, 2019 2:24 pm
Forum: Series 3
Topic: Petrol tank sump removal
Replies: 6
Views: 310
Australia

Re: Petrol tank sump removal

Image
by lowact
Sun Feb 10, 2019 1:49 pm
Forum: Series 3
Topic: Loose valve tappet guide or?
Replies: 19
Views: 492
Australia

Re: Loose valve tappet guide or?

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?
by lowact
Sun Feb 10, 2019 8:59 am
Forum: Series 3
Topic: Loose valve tappet guide or?
Replies: 19
Views: 492
Australia

Re: Loose valve tappet guide or?

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?
Image
by lowact
Sun Feb 10, 2019 6:12 am
Forum: Series 3
Topic: Loose valve tappet guide or?
Replies: 19
Views: 492
Australia

Re: Loose valve tappet guide or?

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...
by lowact
Sun Feb 10, 2019 5:07 am
Forum: Series 3
Topic: Loose valve tappet guide or?
Replies: 19
Views: 492
Australia

Loose valve tappet guide or?

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...
by lowact
Thu Jan 17, 2019 5:35 am
Forum: Series 3
Topic: 4 speed manual to OD conversion
Replies: 15
Views: 614
Australia

Re: 4 speed manual to OD conversion

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
by lowact
Tue Jan 15, 2019 9:44 pm
Forum: Series 3
Topic: 4 speed manual to OD conversion
Replies: 15
Views: 614
Australia

Re: 4 speed manual to OD conversion

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?
by lowact
Tue Jan 15, 2019 4:57 am
Forum: Series 3
Topic: 4 speed manual to OD conversion
Replies: 15
Views: 614
Australia

Re: 4 speed manual to OD conversion

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...
by lowact
Mon Jan 14, 2019 9:49 pm
Forum: Series 3
Topic: Help! Torsion Bar Quandry
Replies: 11
Views: 539
Australia

Re: Help! Torsion Bar Quandry

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...