2189

For those that are interested...

Not it’s not mine😞

 

Nice find , shame its not yours!!

what would you guess the TOTAL cost, in USD ?

Ron

 

I would guess the final running engine with extractors, ECU, tuning, etc about 50K

 

What kind of #s are they forecasting?

 

I don’t know. Maybe 500hp? I’m surprised they are using standard efi intake manifolds on such an expensive engine even if they are ported. I can’t imagune they match the flow capacity of those group 44 heads.

 

i'm thinkin by the time its in a vehicle and running $100K.

should do better than 500hp , but either way torque should be outstanding, 7+ L should easily around 650+ lbs ft.

and they don't say about higher flow heads, the power in the jag V12 is in the cylinder heads

yup ;i bet we could pass some one with that!

 

stage2v12

 

My 50K estimate was for the engine, not sure about the car.

Classic Jaguar is in Austin, you can pop in and ask... Maybe organize a group buy😂

 

Had no idea such an outfit existed in Austin. No power figures listed, not even conservative estimates. Man, that's a lot of $ but people must be spending it!

 

i have visited there shop out on 71 north, around 2006!

very nice place, but when speaking with desk person about V12 XJS, they said they specializes in E types only, kinda cold vibes!

i know i can do the same BASIC engine work for around 10K, using local Austin machine shops, and include forged custom pistons of personal design!
but i'm gettin older, so time frame would be tedious.

 

reread head work , he does give specs of the 44 heads, amazing work.

probably amazing price!!

 

Black bearing? What who is it? Very interesting.

 

i know that both KING bearing and Mahle have coated bearings , BLACK.

i have used King bearings ,altho they were Aluminum steel backed, lot like the early HI performance Corvette 327 FI. Moraine 400.

no longer available.

 

This is going to be interesting... welding up and reshaping the combustion chamber on HE heads

Megasquirt as well.

2240

 

will never get an HE head to flow like 44 heads!

 

That maybe true but it will be very interesting to see what combustion chamber they come up with. I’m no expert but apart from flow I’m thinking combustion efficiency is also important.

 

i like the combustion chamber on top of the piston,thats where the push should be!

BUT many engines have chamber in the head, but heat is wasted there and overheated chambers does NOT control Detonation well!

today forced induction is the realistic way to go,IF horse power is needed and efficnciy is required, and Direct chamber injection used, along with 4 valve twin cams!

lets face it if you were to cast and machine NEW heads thats the way to go!

some times beating a dead dog is a waste of money!

unless of course you just want to amuse yourself!

 

You will also need to to change the spark plug position as it is high in the exhaust pocket. Bringing it down will then interfere with the exh valve head.

 

Yes, the blog says they are moving the spark plug position. I’m not sure why they didn’t weld up the original position before surfacing the head.

 

Hey XJSV12 why don't you lighten those rods. You can take 100g off each rod with no ill effect.

V12 race rod on the left, this was from a 600hp 7500rpm engine. Stock rod on the right.



One of my rods, lightened nearly 100g and balanced to ±0.2g