Jim's turbo motor tech page

This is Jim Hagethorn's newly completed street car. The motor in this car is what created the wheelie picture in the background. So if you see it on the street, be prepared. click on the picture below to see  a larger view.

be patient, it takes a little to load

• Engine/ type 1 as41 case

• Displacement / 1915

• Builder / Mike Shelden

• Crank / 69mm counterweighted

• Rods / Scat H beam 5.394

• Pistons / 94mm Cima

• Rings / Cima

• Cam / Kawell grind (.430 lift at valve)

• Rockers / Stock w/Gene Berg shafts

• Heads / CB 044 no porting done

• Valve size / 40 x 35.5

• Compression / 7.2:1

• Ignition / Bosch 009, blue coil, msd rev limitler/2step

• Carburation / Weber 40 dcoe w/32 venturies

• Intake manifold / Kawell center section, stock end castings

• Exhaust system / Kawell 1 5/8"

• Flywheel / 200mm 12.5 lbs.

• Clutch / Kenedey 1700lbs.

• Clutch disk / Stock rigid

• Oil / Penzoil 20w-50

• Oil cooler / Stock doghouse

• Turbo/Turbonetics T-04B sized by Kawell

• Transaxle / type 1 swing

• Builder / Pelequin Transaxles

• Ring and pinion / 4.12

• Gear ratio / 3.78 1st, 2.21 2nd, 1.56 3rd, 1.12 4th.

• Axles / Sway away short

• Differential / threded super diff

• Special Modifications / Gusseted case

• With some testing in and running in comptetion in my car, the boost was ran at 13 pounds through the gears and around the middle of 4th gear it would climb to 15. The fastes full pass on this set up was a 12.24 and there was a pass that I shut off early in competition that netted a tenth of a second faster in the 1/8th, which I believe would have been a 12.14 pass. MPH hovered around 108.5-108.8.  During some testing down at Carlsbad, we were playing with the muffler and turning up the boost and when we got greedy and took it off just to see what it would do, it ran 15 lbs. of boost throught the gears and in 4th, bounced up to 18 so I shut down early and still ran a 12.05 at 100mph.

  After 30 passes on the motor, the decision was made to tear down the motor for some check up. For peice of mind, we swaped out the stock rods for some new scat rods.

  The new rods

   Ready to go in

  

   Directions

  Turbo and exaust header

  Real small ports and stock end castings

  heads fresh with a new valve job and all plug holes helicoiled.

New color for the motor

Pictures of the finished car can be found here at  http://members.aol.com/jimhage

email jim at Jimhage@aol.com