Search found 15 matches

by Marquis Rex
Tue Sep 11, 2018 8:40 pm
Forum: Series 2
Topic: Difference btw US and European spec’s
Replies: 5
Views: 532
Great Britain

Re: Difference btw US and European spec’s

I just bought a Series 2 OTS recently too. I'm from Europe originally. Have been contemplating what to change to Euro spec. I know my rear end is 3.54:1. It DOES feel ludicrously under geared. Not sure if it has an LSD. The torque is nice though. It runs about 20-21 mph/1000 rpm in 4th gear. I want ...
by Marquis Rex
Tue Sep 11, 2018 8:20 pm
Forum: Technical
Topic: 4.5 Litre rebuild
Replies: 36
Views: 1703
Great Britain

Re: 4.5 Litre rebuild

Well Marquis, that sounds excellent. I would like a Challenger please 1971 would do. I hope you have a subscription to my heroes, David Freiburger, Mike Finnegan, Steve Dulcich, Tony De Angelo and Lucky. Motortrend is killing it at the moment and Engine Masters is superb. https://www.motortrendonde...
by Marquis Rex
Tue Sep 11, 2018 8:13 pm
Forum: Technical
Topic: Jaguar XK-6 DOHC port/cylinder head analysis
Replies: 15
Views: 691
Great Britain

Re: Jaguar XK-6 DOHC port/cylinder head analysis

This is fascinating. I always wonder what the improvements would be, if any, to have the combustion chambers aligned with the bores on the 4.2. What are the detrimental affects off the offset bores? Presumably the squish, mixture swirl and combustion characteristics are different from cylinder to c...
by Marquis Rex
Tue Sep 11, 2018 3:16 pm
Forum: Technical
Topic: 4.5 Litre rebuild
Replies: 36
Views: 1703
Great Britain

Re: 4.5 Litre rebuild

Very cool thread. My take on the 4.7 is that I personally want the engine in a sports car to be 'revvy'. The XK with its super long stroke is heavily biased towards low speed. The intake valves are small for the cylinder size- to the point where the torque curve feels like a diesel almost. Compared ...
by Marquis Rex
Mon Sep 10, 2018 9:44 pm
Forum: Technical
Topic: Jaguar XK-6 DOHC port/cylinder head analysis
Replies: 15
Views: 691
Great Britain

Re: Jaguar XK-6 DOHC port/cylinder head analysis

Below was Uryk at Evolution E Types pet project I don’t know if anything came of it. http://imgur.com/co3VuFa.jpg http://imgur.com/V1yuOnS.jpg Simon WOW! That looks super impressive! I wonder if anything ever became of it. If it was possible to implement variable valve timing on the XK engine that ...
by Marquis Rex
Mon Sep 10, 2018 9:24 pm
Forum: Technical
Topic: Jaguar XK-6 DOHC port/cylinder head analysis
Replies: 15
Views: 691
Great Britain

Re: Jaguar XK-6 DOHC port/cylinder head analysis

I would reaaaly love to hear something about the Maserati C114 engine. It gave around 178 hp in 2.7 ltre shape, 180 to 190 in 3 ltre, and 220 in Merak SS and with huge valves (which usually broke). I can get measures - I never dyno‘ed my own car. Its base was a 3 ltre with broken pistons, so I had ...
by Marquis Rex
Mon Sep 10, 2018 7:48 pm
Forum: Technical
Topic: Jaguar XK-6 DOHC port/cylinder head analysis
Replies: 15
Views: 691
Great Britain

Re: Jaguar XK-6 DOHC port/cylinder head analysis

Here's an article on a twin plug XK motor. https://www.enginelabs.com/news/video-4-2l-jaguar-road-race-engine-makes-400-hp-on-dyno/ I'm somewhat skeptical of the 400 Bhp claim. They seem to claim it as 'net'. But first a little history lesson- the original E type was rated at 265 bhp 'Gross'-which m...
by Marquis Rex
Mon Sep 10, 2018 2:15 pm
Forum: Technical
Topic: Jaguar XK-6 DOHC port/cylinder head analysis
Replies: 15
Views: 691
Great Britain

Re: Jaguar XK-6 DOHC port/cylinder head analysis

I wouldn't raise the CR of a stock cyl head. You need to go Twin Plugs to reap the benefits of a higher Compression Ratio. A guy in Illinois did this recently. The Chevy LS7 cyl heads have the valve seat inserts pretty much touching- you have to be sure there's no porosity. So as long as they're not...
by Marquis Rex
Mon Sep 10, 2018 2:02 pm
Forum: Technical
Topic: Jaguar XK-6 DOHC port/cylinder head analysis
Replies: 15
Views: 691
Great Britain

Re: Jaguar XK-6 DOHC port/cylinder head analysis

I tried to post the images via my desk top and it wouldn't post the images regardless of size chosen. I ended up putting the whole lot on my iPhone and posting from there and now the images are super small.

If any admin can help- cheers!
by Marquis Rex
Mon Sep 10, 2018 1:59 pm
Forum: Technical
Topic: Jaguar XK-6 DOHC port/cylinder head analysis
Replies: 15
Views: 691
Great Britain

Jaguar XK-6 DOHC port/cylinder head analysis

https://s15.postimg.cc/kq9c568sb/IMG_3548.jpg I’m an engine design and development engineer with over 23 years of experience who worked at Jaguar and the premier automotive group for 10 years, involved in the AJV8 and the Aston Martin V8 Vantage engine, amongst others. I’ve since been involved in h...
by Marquis Rex
Fri Aug 31, 2018 6:24 pm
Forum: Technical
Topic: E type series 2 speedo refurb
Replies: 4
Views: 267
Great Britain

Re: E type series 2 speedo refurb

Thanks Everyone! That's EXACTLY what I was looking for!
by Marquis Rex
Fri Aug 31, 2018 2:01 pm
Forum: Technical
Topic: E type series 2 speedo refurb
Replies: 4
Views: 267
Great Britain

E type series 2 speedo refurb

I was looking at the gauges of my E type and they’re quite misty and could do with a thorough clean. While trying to take the speedo out from underneath (undoing the thumb screws and speedo drive cable etc) this fell out and I don’t know where it goes! I had a few questions: Does anyone know where i...
by Marquis Rex
Fri Aug 31, 2018 1:08 pm
Forum: Welcome!
Topic: Greetings from a new E type Owner and Former Jaguar Engineer
Replies: 5
Views: 413
Great Britain

Re: Greetings from a new E type Owner and Former Jaguar Engineer

Welcome to the forum. This is the workshop manual you'll need: https://www.amazon.co.uk/JAGUAR-MODELS-LITRE-SERVICE-MANUAL/dp/1855200201 And if you look in the technical section you'll be able to download pages to print for ready reference. Print pages and put them into plastic sleeves for use in t...
by Marquis Rex
Thu Aug 30, 2018 7:02 pm
Forum: Welcome!
Topic: Greetings from a new E type Owner and Former Jaguar Engineer
Replies: 5
Views: 413
Great Britain

Re: Greetings from a new E type Owner and Former Jaguar Engineer

malcolm wrote:
Thu Aug 30, 2018 5:56 pm
Hi and welcome to the forum. For carburation, you should read the basic handbook that comes with the car. Really good step by step guide. Do you have the handbook? (Small paper one)
Yea I got a little yellow book for the series 2 which I have snuggled up in bed with to peruse every night!
by Marquis Rex
Thu Aug 30, 2018 5:03 pm
Forum: Welcome!
Topic: Greetings from a new E type Owner and Former Jaguar Engineer
Replies: 5
Views: 413
Great Britain

Greetings from a new E type Owner and Former Jaguar Engineer

Greetings! I’ve often perused these forums in the past and have been impressed at the level of technical advice and how helpful and friendly everyone seems to be. This is my first post here. I have just purchased an E type series 2 from a conscientious forum member (not this forum). I did lots of re...