frenchyd
frenchyd UltimaDork
3/22/21 5:53 p.m.

I'll build a nice solid reliable JaguarXJSV12  you help, We should have fun.  That's my goal.  
No experience required. Hopefully I can share my knowledge and not only will you get some seat time  but have fun doing it.  

clutchsmoke
clutchsmoke UltraDork
3/22/21 10:08 p.m.

I'd take you up on that if I lived a bit closer.

jungle
jungle New Reader
3/31/21 1:25 p.m.

Let's talk....

frenchyd
frenchyd UltimaDork
3/31/21 6:34 p.m.

Ok. 
    I live on lake Minnetonka. Is that reasonable distance?  

kingbeann
kingbeann New Reader
3/31/21 11:50 p.m.

Wow, I'm very local and interested. If you are an autocrosser and going to MOWOG1 I'd love to talk with you there about your plans, otherwise I could drive over in my own project cat at some point. 
 

a few years ago I built a mk3 Jetta  for the challenge but never went (there is a link to part of a build thread on here somewhere)   I have since sold that car and don't have a long drive to FL high on my bucket list, but very interested in Champ or WRL or similar.


 I also appreciate the XJS as a starting point. the group 44 jag race car should be an inspiration and homage for the build!

frenchyd
frenchyd UltimaDork
4/2/21 7:44 p.m.

In reply to kingbeann :

I PM'd you yesterday. 
    

frenchyd
frenchyd UltimaDork
4/2/21 7:45 p.m.

In reply to jungle :

Did you get my PM?  

kingbeann
kingbeann New Reader
4/2/21 8:14 p.m.
frenchyd said:

In reply to kingbeann :

I PM'd you yesterday. 
    

I do not see any messages or even a place to view a pm on this site. I may not be looking in the right spot?  Regardless, I sent you a message on here with my cell # so you can text back. 

kingbeann
kingbeann New Reader
4/11/21 5:59 p.m.

In reply to kingbeann :

I'm not sure if I am totally failing in the private message department. You can also send me an email to my username at hotmail dot com. Still interested in a  build. 

frenchyd
frenchyd UltimaDork
4/12/21 8:01 a.m.

In reply to kingbeann :

Sorry left my phone at work.  I'll contact you today via E mail. 

frenchyd
frenchyd UltimaDork
4/12/21 12:25 p.m.

E mail sent. 

kingbeann
kingbeann New Reader
4/20/21 11:20 a.m.

Frenchy, it was nice to meet you over the weekend.  You have a solid foundation and an incredible inventory of "stuff" in the garage. 

 

For this to work we still need to find a few more people interested in joining the team who can work on the build, in exchange having a ride for budget friendly wheel to wheel racing.

 

Tentative game plan would be a Champ Car build using the car pictured below as a foundation.  Frenchy has extra engines, transmission, and god knows what else in his garage.  Would need to strip the interior, cage it, maximize weight savings, likely swap to outboard brakes in the rear, maximize wheel/tire width, and make it reliable.  Decisions would include run as automatic or manual, power vs manual brakes, paint (potential to revive with patina), turbos, etc.

By Frenchy's description he has many years of experience campaigning and building Jaguars and a healthy inventory of stuff and knowledge to share. 

By my description I have been years of experience wrenching and minor fabrication including a challenge-worthy turbo ABA Jetta I built to bring to Florida but never went.  I have no experience with Jaguars.

Anyone else local to the Twin Cities interested?

Frenchy's XJS

frenchyd
frenchyd UltimaDork
4/20/21 2:36 p.m.

In reply to kingbeann :

This would likely be done in stages.  Get it cleaned up and running.  And do the Northern version of the challenge.  Everybody drives. 
 Then prep it for Champcar  and run it at the local track night in America event  to sort it out and prove its reliability. Plus give everyone the chance  to try it out at a higher speed. 
     Finally enter the Champcar event at Road America.  Where you get to enjoy the scream of that big V12  down those long straights.  What Road & Track called thundering elegance? 

wvumtnbkr
wvumtnbkr PowerDork
4/20/21 2:58 p.m.

If you have any champcar specific questions, hit me up.  

 

Make that thing go on a diet.

 

Or better yet, if you want to stick with the v12, swap it into something lighter...  

 

A 3rd gen camaro with that engine would piss off all the purists!

frenchyd
frenchyd UltimaDork
4/20/21 3:31 p.m.

In reply to wvumtnbkr :

My first version was an early 1975 which I got down to 2700 pounds.  Robert Knodt's version is around 3000 pounds so it's really not that heavy. 
       I actually want to put a last version of the Monte Carlo body on the XJS chassis , paint it black with a white#3 to Really offend  the Chevy boys. 

frenchyd
frenchyd UltimaDork
4/20/21 3:37 p.m.

In reply to wvumtnbkr :

OK if I reverse engineer the EFI and replace it with the earlier carbed version do I take a 50 point hit?  
 I mean the early carbed version had 18 less horsepower than the EFI  shouldn't I get points?   
   On the other hand the EFI was created by the prince of darkness, Lucas. But really shouldn't SU  carbs be enough punishment?   

wvumtnbkr
wvumtnbkr PowerDork
4/21/21 8:34 a.m.
frenchyd said:

In reply to wvumtnbkr :

OK if I reverse engineer the EFI and replace it with the earlier carbed version do I take a 50 point hit?  
 I mean the early carbed version had 18 less horsepower than the EFI  shouldn't I get points?   
   On the other hand the EFI was created by the prince of darkness, Lucas. But really shouldn't SU  carbs be enough punishment?   

It's 50 pts to swap from or to a carb.  It's also 25 or 50 pts to swap intake manifolds.

2700#s is actually pretty heavy for champcar.  Most cars are sub 2500#.  There are a lot right around 2000#.

 

My car is 2350# (2nd gen rx7 with gm 3500 engine).

 

 

Edit to add...  if that engine was available the way you want it, just claim it as whatever year had that setup.  You will need to make sure the trans, rear end, and fuel capacity is the same as the year you claim.  

 

The vin doesn't matter.  Actual year doesn't matter.  As long as the main components are the same as the year claimed.  

frenchyd
frenchyd UltimaDork
4/21/21 3:44 p.m.

 There are detail differences from 1975-1992 engine size is the same. 5.3 liters or 326 cu in.  Some years had chrome this  or wood dashes,  HE with dots or without. Some had a hyphen between XJ-S and some didn't. Etc. 

    The year the intake & carbs (4) would be 1971-1974 the engine would be 1981-1992 the transmission would be 1977-1992 the rear end would be 1992-1996.  The VIN would be 1984 And that's just USA specs.  World specs get better. ( and more powerful).  
   Bottom line the V12 makes more power than the same era Chevy 454 by 32-79 net horsepower. 
   All the XJS's had 24 gallon fuel tanks. The EFI started out using Bosch components and gradually switched to Lucas over a 3-4 year period. Then changed ECM's periodically and then distributors  from Lucas to Marelli.    Parts pretty much interchange from any year. All the sensors were analog until Ford bought them then they went digital like the rest of the world. Ford. Eliminated the distributor and went to crank triggered ignition using Ford coil on plug. In 1993 Ford increased the stroke 1/4" and it became a 6.0 liter or 366 cu.in.  Compression dropped from 11.5-1 (USA spec) to 10.5-1  Horsepower went to  318 USA spec 334 world spec. 
    However Jaguar never made all the changes at year end.  Sometimes they were made in mid production. Or when new models were announced which rarely was in the fall like most companies. More typically in the spring or whenever they ran out of something. 
Realize Jaguar was a very small company in those days. Some years only 1000 XJS's were made for global sales .  Just because A car was made in 1976 doesn't mean it was called a 76 it could be a 77- or even a 78. 
Everything was batch made. A windshield in one car would go right in but the next car a lot of adjustments had to be made to get it to fit.  

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