frenchyd
frenchyd PowerDork
5/7/20 5:12 p.m.

My Son-in -law  came on one sitting in a garage  he's clearing out for a bank that has the house in foreclosure. 
       No hood in sight or interior,  no  engine or gearbox etc. Doesn't seem like a 240Z. looks like someone was going to "restore" it and got it apart before giving up and based on other signs around the house and property  took up serious drinking. 
 

But  it's a roller even without a steering wheel or dash even.  Minor surface rust bleeding through the primer. 
I figure if it held a 6 cylinder a V12 should slide right in.   
How much Torque will the rear end take?  Are they limited slip and what ratio is likely in it.  No tittle so it's a race car or off to the crusher. 

crankwalk (Forum Supporter)
crankwalk (Forum Supporter) SuperDork
5/7/20 6:34 p.m.
frenchyd said:

My Son-in -law  came on one sitting in a garage  he's clearing out for a bank that has the house in foreclosure. 
       No hood in sight or interior,  no  engine or gearbox etc. Doesn't seem like a 240Z. looks like someone was going to "restore" it and got it apart before giving up and based on other signs around the house and property  took up serious drinking. 
 

But  it's a roller even without a steering wheel or dash even.  Minor surface rust bleeding through the primer. 
I figure if it held a 6 cylinder a V12 should slide right in.   
How much Torque will the rear end take?  Are they limited slip and what ratio is likely in it.  No tittle so it's a race car or off to the crusher. 

 

You figure if it held a tall narrow inline 6 a v12 will drop in? LOL

 

Rear end is likely an open diff geared tall. Really pictures would help to you what you have rather than guessing. 

 

frenchyd
frenchyd PowerDork
5/7/20 6:36 p.m.

In reply to frenchyd :

Wikipedia to the rescue. Apparently  it is either a 260 Z or a early 280 Z  later 280's had recesses for the impact bumpers.   The most stock horsepower they had was 170 hp with 207 Ft Pds of Torque.  But I don't know how much the rear end is rated for or will take.   
   I need to find out if there is an easy bolt on brake kit and are heavier springs available.  
 I've got to decide quickly. My son in law wants it gone or will call in the crusher. 

frenchyd
frenchyd PowerDork
5/7/20 6:49 p.m.

In reply to crankwalk (Forum Supporter) :

 I can't figure out how to transfer pictures without alerting She who must be obeyed that I maybe hauling home another non running car.  
 

V12's  are narrow while six cylinders are wide. Crazy I know but everything on the V12 is on top. Even the stock cast Iron exhaust manifolds fit inside 21 inches.The spark plugs on on top in the center of the V.
  Six cylinders have an intake hanging off one side and and the exhaust off the other.  Down at the bottom the V12 are just like an in line 6. 
The advantage of  the narrow 60 degree V  compared to the normal 90degree V  where spark plugs are on the outside. 
Really  it's just two inline overlapping six cylinders  of  2.65 liters each.   
The Datsun  had a cast iron block while the Jaguar is all aluminum.  Probably a couple 300 pounds heavier. Both are single overhead camshafts 2 valve engines.  
Obviously the Jaguar is nearly twice as powerful. With 264 HP. DIN net to   The 260's 140? I'll check.  Yeh. 139 in a 280 

crankwalk (Forum Supporter)
crankwalk (Forum Supporter) SuperDork
5/7/20 7:02 p.m.
frenchyd said:

In reply to frenchyd :

Wikipedia to the rescue. Apparently  it is either a 260 Z or a early 280 Z  later 280's had recesses for the impact bumpers.   The most stock horsepower they had was 170 hp with 207 Ft Pds of Torque.  But I don't know how much the rear end is rated for or will take.   
   I need to find out if there is an easy bolt on brake kit and are heavier springs available.  
 I've got to decide quickly. My son in law wants it gone or will call in the crusher. 

That torque number isn't in the ballpark with a 260 or 280z. They rear end can handle mid 200s ft lbs and usually LSD rear and different stub axles are used for more power. LSD r200's from later Nissans or Subarus can be used. For really fast cars, solid rear end ends are popular.

Big brake kits are available, suspension is available.....s30s are popular cars but what exactly are you trying to do again?  If you want to know if there is an easy big brake bolt kit why inquire about a v12? You want to hit the easy button with a big brake kit but are considering swapping a v12 in it? Do you plan on doing a full on fabrication project or not? 

If you're afraid to post pictures of the potential project car without getting in trouble, your definitely going to get worked when you're nads deep in fabricating v12 swap parts. 

 

 

frenchyd
frenchyd PowerDork
5/7/20 7:11 p.m.

In reply to crankwalk (Forum Supporter) :

I have 3 spare V12's in my garage. All nice sold motors. They are the easy and cheap( free) part. 
plus one in the XJS. 
they should slide in easily enough.  I know how to move metal around.  
my goal? Have some fun.  Maybe a Challenge  type car. Nah, won't bring it down. Too expensive to travel that far. 
As for SWMBO? I'm just about finished on my retaining wall so I'll shove some stuff around. Stack a little more stuff on top of other stuff Finish off the book case I'm building.  There should be room.

Engine  Mounts?  I've done enough.  I'll mount the engine rigid. Use its strength to strengthen the chassis.  Hang the trans on something  flexible because I'm sure  the torque  of that V12 ( think big block Chevy )  will move the chassis some. if the rear end cant hack it it shouldn't be that tough to hang a Jaguar  rear end. I've got a few. All sorts of cars handle them  427 Cobra, kit cars,  hot rods,  trucks etc. 

Darn, they are pretty heavy. 2984 pounds. I can get an XJS to that weight. 
Hmmmm 

mblommel
mblommel Dork
5/7/20 9:34 p.m.

I think the Jag V12 route has been taken before with the early Z cars in pursuit of Ferrari GTO replicas. 

A  260Z shouldn't weight nearly 3000lbs. 

frenchyd
frenchyd PowerDork
5/8/20 1:16 a.m.

In reply to mblommel :

I was shocked too,  but that's what Wikipedia said.  Now a little of that weight will go away since it's gonna be a race car 1 racing seat no carpet padding upholstery etc. 

but a rollcage  and the V12 is probably at least couple hundred pounds heavier than the Datsun motor.  
 

If that's the case, and I can get a Jaguar down to that weight ready to race, plus I have a nice rust free one already sitting here. ????!!!!! 

Sergeant82d (Forum Supporter)
Sergeant82d (Forum Supporter) New Reader
5/21/20 8:07 p.m.

I can't tell you anything about the car itself, but in the summer of 1982, I was about to start my senior year of high school... One of my best friends had a 260Z - manual transmission, L6, dual (or maybe 3...) Webers, side pipes... Pretty nice car. Anyway...

I was working for the John Deere dealer and one of the mechanics had an old Impala with a pretty good Goodwrench 350 and a TH350 auto that he was selling for... I think it was $100. My buddy started thinking he'd like to have that in his Datsun. 

We had it in, except for the exhaust - in a week. As I recall, all we did was build spacers for the engine mounts, and we used a piece of 1/4 inch plate steel for the tranny. Just drilled holes in the floor and bolted it in. 

Ran great! Lost a little bit on the top end, but acceleration was dramatic. Broke a LOT of U-joints! 

Anyway - sorry/not sorry for hijacking your thread...

Agent98
Agent98 Reader
5/21/20 8:35 p.m.

No sarge, you just saved him a lot of trips to napa,to get u joints. I've owned 4 of these they are heavier than you think. Love the novelty, but check the actual weight installed of a v12 versus a Ford 302 or JY LS series. Buick 350 is another light option.

 

 

The factory auto rear was a "180" the manual a model

" 200" both capable of sustaining endless amounts of stock motor abuse. V8 with twice the torque? Another story. You'll find redneck engineering rear swaps and trans tunnel cram-ins to be tiring. Get a light V8 or 280zx engine swap and enjoy.

californiamilleghia
californiamilleghia Dork
5/21/20 8:44 p.m.

How long did the Z car have the "classic" style ? 

 I know they made a 2+2 with a raised area above the rear seat ,  

lnlogauge
lnlogauge HalfDork
5/21/20 8:49 p.m.

A bonded title fixes the title problem for not that much money or effort. 

frenchyd
frenchyd PowerDork
5/23/20 6:27 p.m.
Agent98 said:

No sarge, you just saved him a lot of trips to napa,to get u joints. I've owned 4 of these they are heavier than you think. Love the novelty, but check the actual weight installed of a v12 versus a Ford 302 or JY LS series. Buick 350 is another light option.

 

 

The factory auto rear was a "180" the manual a model

" 200" both capable of sustaining endless amounts of stock motor abuse. V8 with twice the torque? Another story. You'll find redneck engineering rear swaps and trans tunnel cram-ins to be tiring. Get a light V8 or 280zx engine swap and enjoy.

Just doing a little mental math the Datsun has a cast Iron block. In line six 

the V12 block is aluminum. Die cast aluminum. So it's lighter than a sand cast plus it doesn't have a block deck.  I'm willing to bet the V12 block isn't heavier than the Iron block  Two heads will weigh more than one. But the rocker arm arrangement Datsun uses is heavier than the direct cam operation Jaguar has.  So a Jaguar head will be slightly lighter than Datsun but a pair of Jaguars probably weigh 50-60 pounds heavier than the Single Datsun. 

The Jag V12 May weigh 200 pounds more than the Datsun.  But we are talking more power than a  big block (454)  

Remember The 450 horsepower Chevy was advertised  or gross horsepower. While the Jaguar was DIN net horsepower ( multiply DIN  times 1.0139 to get SAE net horsepower.). 
a Chevy SS 454 in 1983? Made 235 SAE net horsepower while The Jag made 264 DIN net. 

You'll need to log in to post.

Our Preferred Partners
bk52qNDSxbF9Dgriowym8AEOyRB01mP64zZDRIdAV8XYIuuNULnYwHjCNUlO9gCe