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Author: Subject: Jag V12 bottom ends (YES ENDS plural)
jollygreengiant

posted on 30/3/19 at 06:00 PM Reply With Quote
Jag V12 bottom ends (YES ENDS plural)

Well, Ive got this little idea on the go at the moment, and it was just a thought for a bit of an hmm project. So I might be looking for a couple of jag V12 bottom ends (staight and preferably not knocking). Definately don't want any heads or ancillaries, flywheels, drive plates. Probably wont want sumps, but not sure at this stage. Front pulley's will not be required, but the bolts at both ends might be an idea.

So, IF anyone has some and wants to get rid of them to me for preferably zilch then let me know. IF I can get this plan together then I might be building a bit of a beast of and engine. And NO it wont be a big V or an X.





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Benzine

posted on 30/3/19 at 09:11 PM Reply With Quote
A U engine?

Inline?

Mother of all coffee tables?

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scudderfish

posted on 30/3/19 at 09:33 PM Reply With Quote
W24!
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jollygreengiant

posted on 30/3/19 at 10:07 PM Reply With Quote
Ok then, recreate THE Napier Sabre H24 at approximately 1/2 scale.





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mark chandler

posted on 30/3/19 at 10:14 PM Reply With Quote
They are really heavy, I had a couple of v12's jags XJ12 & XJS also ran a manual 4.0litre XJS for a couple of years, faster and a lot more economic.
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rusty nuts

posted on 31/3/19 at 07:44 AM Reply With Quote
Didn’t Clive have one? Don’t suppose he took it to Malta?
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jollygreengiant

posted on 31/3/19 at 09:27 AM Reply With Quote
Yes Clive DID have one, I think his son had it.





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jollygreengiant

posted on 31/3/19 at 10:16 AM Reply With Quote
quote:
Originally posted by mark chandler
They are really heavy, I had a couple of v12's jags XJ12 & XJS also ran a manual 4.0litre XJS for a couple of years, faster and a lot more economic.


Yep The Napier Sabre Engine IS a BIG and HEAVY engine. About the same capacity as the Roll Royce Merlin, but, the Sabre had an awful lot more horse power (over 3000hp). Original engines are nearly as scarce as rocking horse do do's when NOT sectioned. I was thinking. why not try and recreate one using available parts. The Jag V12's would supply suitable crankshafts, connecting rods, pistons and crank case's. The cylinder blocks could (possibly) with some modification, be utilised, in conjunction with top plates (to direct coolant) and individual cylinder heads. the rest of it could be worked out.
H24 sabre engine real
H24 sabre engine real


H24 Sabre engine art work
H24 Sabre engine art work


When complete you would have a part scale Sabre of about 12 Litres no bigger in reality than a V12, but 24 Cylinder H pattern that would be a bit of a head turner where ever it was run, be it car shows or airshows. But it would not have the million pound rebuild cost that a real genuine Napier Sabre is likely to have.

Just my thoughts. so IF anyone does know of or might be interested, ..............................................................................

[Edited on 31/3/19 by jollygreengiant]





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Ugg10

posted on 1/4/19 at 12:22 PM Reply With Quote
Could the BMW M70 be an alternative as this is an aluminium block and are available off ebay. The M70 has no vanos, the M73 which is more available has single vanos but if you are chucking that way then it may not be an issue.





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Mr Whippy

posted on 3/4/19 at 06:38 AM Reply With Quote
ok... so this sounds a lot of money & time to make, I'm assuming there is some purpose to this? You must have some machine shop to pull this off.
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JAG

posted on 3/4/19 at 07:51 AM Reply With Quote
quote:

You must have some machine shop to pull this off



This ^^^^

How are you going to re-create the Sleeve Valve mechanism?

Machine from solid??

[Edited on 3/4/19 by JAG]





Justin


Who is this super hero? Sarge? ...No.
Rosemary, the telephone operator? ...No.
Penry, the mild-mannered janitor? ...Could be!

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jollygreengiant

posted on 3/4/19 at 08:36 AM Reply With Quote
quote:
Originally posted by Mr Whippy
ok... so this sounds a lot of money & time to make, I'm assuming there is some purpose to this? You must have some machine shop to pull this off.


Well, why not. I've not got a lot of money, no money to be honest at this stage. I have time, I have pressence of mind and a degree of intelegent thought. The purpose, why not and belief in my abilities and those around me. Also it's about a belief in this country to try and proove that IF we put our minds to it it CAN be done, current thinking by a lot of people is or seems to be 'oh crap we are in a mire and we cant do that or the other because we are too scared or have no vision and I dont want to risk the £1 I have in my pocket/bank/mattress'. As for machine shop, well they did it in 1940 and they didn't have the tools/machinery available that we have now.
JM2d'sW

And the sleeve and operating system, well, the sleeve are just cylinder liners (with cut outs for the porting) and are operated by a gear and rotating crank system driven by hollow shafts that carry a drive rod to the rear of the engine. Simples (shnick). The only part which I am still considering at the moment is the block/crank housing assembly.





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Myke 2463

posted on 3/4/19 at 08:38 AM Reply With Quote
https://www.facebook.com/philrowsemotorcycles?__tn__=%2CdC-R-R&eid=ARD23wj2ePyOXL9qr7kd2AhVt4lpPD3LP7yhHviEclvpm1AOgXBTzk5-TNOeRwf9m9ZWi7qsEm2IrVC 6&hc_ref=ARQDTH6O7CiFUxlIQScVt5Dnda9XL8D7vjMiBUacEhybCkicOXOYKxbsDgNNsOrtLCI&fref=nf


2 V 12 engines ?





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Benzine

posted on 3/4/19 at 09:21 AM Reply With Quote
quote:
Originally posted by Mr Whippy
ok... so this sounds a lot of money & time to make, I'm assuming there is some purpose to this?


Because it's awesome, obviously. I miss the old Mr Whippy

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Mr Whippy

posted on 3/4/19 at 11:54 AM Reply With Quote
quote:
Originally posted by Benzine
quote:
Originally posted by Mr Whippy
ok... so this sounds a lot of money & time to make, I'm assuming there is some purpose to this?


Because it's awesome, obviously. I miss the old Mr Whippy


lol Just because...

Mr Whippy has had his hands burnt too many times to believe faith alone will save the day

Trying to recreate a scaled down engine like a sabre from parts of other engines, ok lets see how you get on, I for one will be very impressed

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paulf

posted on 3/4/19 at 10:11 PM Reply With Quote
I would start from scratch and build a model engine of about 25mm bore ,given enough time most parts could be fabricated from machined parts by brazing or milled from solid.A number of aero engines have been built from scratch including merlins and bently rotary engines but it is a completely different matter to make something full size.
Paul.
quote:
Originally posted by Mr Whippy
quote:
Originally posted by Benzine
quote:
Originally posted by Mr Whippy
ok... so this sounds a lot of money & time to make, I'm assuming there is some purpose to this?


Because it's awesome, obviously. I miss the old Mr Whippy


lol Just because...

Mr Whippy has had his hands burnt too many times to believe faith alone will save the day

Trying to recreate a scaled down engine like a sabre from parts of other engines, ok lets see how you get on, I for one will be very impressed

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jollygreengiant

posted on 4/4/19 at 06:42 AM Reply With Quote
Well Paul, the start from scratch model engine IS already underway courtesy of a chap (down south I beleive) of Clem Tomlinson, he just loves the napier engines. You will find his progress down the bottom of the link page.

quote:
Originally posted by paulf
I would start from scratch and build a model engine of about 25mm bore ,given enough time most parts could be fabricated from machined parts by brazing or milled from solid.A number of aero engines have been built from scratch including merlins and bently rotary engines but it is a completely different matter to make something full size.
Paul.
quote:
Originally posted by Mr Whippy
quote:
Originally posted by Benzine
quote:
Originally posted by Mr Whippy
ok... so this sounds a lot of money & time to make, I'm assuming there is some purpose to this?


Because it's awesome, obviously. I miss the old Mr Whippy


lol Just because...

Mr Whippy has had his hands burnt too many times to believe faith alone will save the day

Trying to recreate a scaled down engine like a sabre from parts of other engines, ok lets see how you get on, I for one will be very impressed



Well Paul, the start from scratch model engine IS already underway courtesy of a chap (down south I beleive) by the name of Clem Tomlinson, he just loves the napier engines. You will find his progress down the bottom of the link page.

Model Sabre engine linky dink

[Edited on 4/4/19 by jollygreengiant]





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