Jensen Interceptor back to the origins

 

After 12 years of Indy headed 440 nitrous injected and stroked 500ci engines my Jensen Interceptor deserves the right to get back his original low compression hipo RB engine. Its got a fresh up to stock specs. I will try some different carb combinations, from Holley spreadbore to Carter Thermoquad and Rohester Q-Jet to figure out best power and mileage.

 

Indy engine comes out...

 

...and will find a new home in a 71 Charger

...the bluprinted stock engine near completion

Balancing Rig

To build a crankshaft balancing rig is more difficult than you will think. We were aware of problems but as usual further ones expose during the building process.

Currently fighting these problems

-weight of the table and base
-rigidity of the table and base
-induced noise of roller bearings
-design, rigidity of crank holders
-usability of drilling fixture
...

The next weeks....

...I will not get bored. Fact is, I am running out of engine stands. In the waiting queue 350 SBC, 403 Olds, 383 and 440 Mopar. Further we built a balancing rig for V8 cranks, the necessary Schenk Ind. measuring equipment is already there and used by Jakadofsky Jet Engines to balance their turbines which turn up to 120k rpms. The rig has provisions to run shafts and cranks on either roller bearings or teflon prism.


Balancing rig


Vibration control

727TF transmission

Overhaulin the 70' Cuda Torqueflite transmission was an easy task. It takes some hours to inspect all the parts and change clutches, seals and some bearings. Due to low milage all of the hard parts were in pretty good shape.


Insideview


valuable scrap

Overhaulin 70'Cuda 383

Overhaulin Austrian Style, the fish will be restored without hurry and with knowledge of the owner, no prank, no con-Foose-ion, seven months instead of seven days, it will cost hard earned money and in the end nobody will yell "Oh my god".
I have to take care of the 383ci Commando engine and the 727TF transmission. Just a basic overhaul to stock specifications with some blueprinting.


383 HiPo Fish

Superrare...

...carbon Mopar W8 intake auctioned DownUnder goes for about 1000Euros. Built for a handful of Chrysler LeMans engines used in the Dallara SP1, which competed successfully 4th place overall in the 2001 LeMans Endurance Race. There is not much known about this engines rather than they were similar to detuned USAC Silver Crown engines.

Engine
Engine Builder: JOHN CALDWELL CDI
Manufacturer: MOPAR
Type: LEMANS
Displacement: 365
Horsepower: 650+
Torque: 500+
Induction: CARBON FIBER INTAKE MANIFOLD WITH EFI
Heads: CUSTOM RAISED PORT W8 HEADS FOR LEMANS ONLY
Block: MOPAR ALUMINUM MADE FOR LEMANS
Main Caps: PROGRAMS BILLET CROSS BOLTED
Crankshaft: LA ENTERPRISES BILLET 3.37 STROKE
Connecting Rods: CARRILLO
Pistons: CP CUSTOM
Camshaft: LSM
Valves: 2.18 1.625 DELWEST TITANIUM
Valve Train: JESEL AND T&D
Races: 1


Ebay auction


Mopar Lemans engine


Dallara SP1

Mexxspeed

I have done a new blog for my friend Martin F. aka Mexx. Bringing you information about his fast Karmann Convertible, his new radical Karmann dragracer and everything aircooled. Check it out. Mexxspeed

My Jensen Interceptor on YouTube

Semifinal run Pannoniaring 2003 and this happened. Look



Final run Pannoniaring 2003 against Mexx's Karmann

Gordian Knot

Yeahh the BeaMini exhaust tubes are ready to feed the hungry turbine.

Exh primaries

Paxton Mustang GT 5.0

Finally the Paxton installation was tested over the quarter under same conditions as last year. My feelings were approved, there isnt much powergain. Boost comes in at 3000rpm with low 1-2psi and rises to 5psi@5000rpm. Next step checking fuel pressure, upgrade pump if necessary, installing smaller blowerpulley.


2006 test NA


2007 test Paxton 5psi

News BeaMini

The BeaMini got a beautiful welded plenum with 4.0L HO Jeep throttlebody, new brake disks and some new fabricated parts to complete the turbo installation. Look at Harry's 16v project


trialfit plenum & turbine

Dumpvalve installation

...on the Paxton Mustang GT 5.0 done. Negative effects like idle, brakeboosterproblems are gone. Power still dissappointing. Qurtermiletests still pending. Interesting article on supercharging you find here. Jim Roal article

"....Most of the 6psi to 9psi centrifugal kits don't build any measurable boost until about 3,000 RPM. The higher pressure kits will start to build boost at lower engine speeds. Higher pressure, inter cooled, centrifugal superchargers work OK in full race applications on an engine with a high RPM power band. The street kits can be disappointing. There are good reasons that very few professional race teams in only a few types of races select centrifugal blowers. They are certainly better than no blower and they will give you the peak power gains...."

Blow Off Valve

All the necessary adapters and necks for the Bosch 0 280 142 103 Blow Off Valve are done. Installation in the 90' Mustang GT will follow.


Dumpvalve

Nikasil vs NOS

... and the winner is: NOS. Thanx to Mexx's engine research and developement we know now that Porsche piston and Nikasil cylinders cannot handle 200hp nitrous shots. Peakpressures smashes the ringlands down, blowby and disaster follows.


Mahle piston


Nikasil cylinder

BeaMini

Harry's BeaMini gets a first engine try-on before fitting the artificial breathing. And yes we are anxious to hear it running :-)


BeaMini engine fitted

Ever...

seen a 16v Mini engine, and yes it will be under pressure. Its be built by my good friend Harry which was ashame that his old blown and intercooled Mini A-engine couldnt reach the 200hp goal. But with the new Beamer motorcycle head there is hope now. For more pics go to Harry's 16v .


Beamered Mini engine

Problem solver

Here is the little problem solver which shall teach the Paxton good manners. Cheap and reliable. Bosch 0 280 142 103 Blow Off Valve widely used in production cars like Saab, Porsche. Where bigger diameters are required use two of them.

Boot 2007

Boot 2007 in Düsseldorf one of the biggest boat shows in the world.
Still there the big old engines.


Twin supercharged 1200hp BBC for the Class 1 boats


Supercharged off the shelf 800hp BBC

Done

Last week I completed the Paxton installation on the 90's Mustang GT. Pressuretube from charger to intake was rewelded to correct angle, some bracket mods and wiring partly redone. First impressions, except for a little whine the paxton runs smooth and quiet. Testride a shock, the car lacks power from standstill doesnt even spin the tires. After checking boost and fuelpressure over the rpmband its clear that everything is working properly. Boost is coming in at 2500rpm with about 1psi and rises to 5psi at 4500rpm. There is a noticable powergain above 3000rpms, but the engine is now definitely weaker below 2000rpm, it has to work the charger and there is no measurable boost. Maybe that wont be noticed with shorter rearend gearing, but the 2,76:1 takes its toll. Also there is less vacuum for the brakebooster when you close the throttle and the idlestepper is confused for about some moments. G-tech and AP22 will tell the realnumbers next year.


Arcwelding

Paxton

Every Peterson Publication will tell you "easy weekend job". Real life is, four evenings are gone and its still not possible to close the hood, this f* Paxton is sitting to high, beside several other things that have to be modified. Proud to be American Made, you are kidding!