Spark gap clarity please

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Jul 20, 2022 | 09:33 AM

#21

Greg in France

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From: France

Quote:

Originally Posted by Grant Francis

I ran the Red beast in the NT (no speed limits back then), and I ran out of brave pills at 5800rpm, and have NO idea of the speedo, shiiit was zooming past the window at insane speeds, spouse was NOT impressed, and the damn thing still had us pinned to the seat, warm and fuzzies, YOU BET.

The V12 is one engine where "near enough is simple NOT good enough", but again, so few actually listen.

5,800 is WELL north of 150 MPH Grant! The fastest I have gone in mine is 150 MPH, uphill on an unrestricted motorway, in ambient temp of about minus 10 centigrade. It was till pulling like a train when I chickened out! My engine LOVES cold air.

Jul 20, 2022 | 10:00 AM

#22

Grant Francis

Joined: Feb 2010

Posts: 28,791

Likes: 11,269

From: Adelaide Stralia

Yep, nothing like a Jag V12 being driven as designed. Sad so many are shopping cars.

The fact the damn thing still pulled, an sat on the road like Super Glue still gives me the shudders.

The following X300 and S Type's never felt that sure footed at 110kph,. The designers really did get it RIGHT.

Maybe I should sweet talk Management and buy another XJ-S, I doubt I am that brave or silly, but you never know.

Jul 21, 2022 | 06:22 AM

#23

JayJagJay

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Joined: Sep 2016

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From: New York New York

Quote:

Originally Posted by Robbo D

Hi Jay.
I chopped the post in my car when I got it. Just used a Dremel with a cutting disk and then filled the rotor arm. Works fine with no issues. Also replaced all the spark plugs and gapped to 0.25 again when I first got the car.
Rob.

I'll do it. There was recent thread where someone showed a photo of a minorly scorched rotor. I don't need that...

The SPEEDS y'all talk about are crazy...maybe someday,,, when I'm in my 70s, 😂

Last edited by JayJagJay; Jul 21, 2022 at 06:29 AM.

Jul 21, 2022 | 07:51 AM

#24

Doug

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From: Pacific Northwest USA

Quote:

Originally Posted by Grant Francis

Yep, nothing like a Jag V12 being driven as designed. Sad so many are shopping cars.

Somehow or the other these cars have come to be treated as though they're made out of glass. They're not.

Quite the opposite, really. They're built like tanks.

And it's darn near impossible to hurt the V12 engine...cooling system neglect excepted, of course.

I don't think I've ever heard of a Jag V12 engine suffering an internal failure. That is, a failure of the reciprocating assembly, oiling system, bearings.

To each his own, naturally, but IMO if you're not giving your V12 the boot at every opportunity, you're missing half the fun

Cheers
DD

Jul 21, 2022 | 07:53 AM

#25

Doug

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From: Pacific Northwest USA

Quote:

Originally Posted by Grant Francis

100% agree.

My XJS was more stable at 100-120mph than any car I've owned, including my XJR. I was always amazed !

Cheers
DD

Jul 21, 2022 | 08:07 AM

#26

Greg in France

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From: France

I think it was Phil Hill, certainly a famous US racing driver, who was asked b y Jaguar to test a racing spec XJS as Daytona. He said that Jaguar had told him the car was dead stable at high speeds, unlike the E type he had driven for them (E Types are notoriously unstable at high speeds). He said, in the subsequent interview that he had thought that this assurance was 3/4 wishful thinking and1/4 BS.
Then, he said, he tried the car, and found it was so stable he could move it up and down the banking at 150 MPH with one hand on the wheel, and absolutely no dramas whatsoever!