The final product


It is exciting to have the car back together again. It is a blast to drive, the torque filled KA is always ready to lurch the car forward. These engine are notorious for lack of top-end power, so I plan on experimenting with cams and a programmable EMS in the future, but for now I plan on just driving and enjoying this creation.

UPDATE: I finally found some time to strap the car down on the 'dingo. I did several pulls, here are the results:

Green Line: Orignial Engine (L20B Weber DGV) (67 HP Max)
LIght Blue Line: KA24DE with silencer in the muffler, static ignition timing set at 18 degrees (143 HP Max)
Red Line: KA24DE with silencer REMOVED from the muffler, same ignition timing (148 HP Max)
Dark Blue Line: KA24DE without silencer and static timing set at 22 degrees (151 HP Max)


Here is a picture of the removable silencer I made that fits in the muffler. It restricts the exhaust flow to a 1-3/4" tube.

Each combination was dynoed twice to make sure the runs were consistent. The results show that this engine loves free flowing exhausts. Corking it up a little with the silencer does not help anywhere in the power band.Torque takes a nose dive starting at 5,000 RPM. Hopefully some cams/cam timing will solve that problem.



1974 Datsun 610 Spec List :

1995 S14 KA24DE (OBD I)
Custom Air Intake
Custom MAF adapter
AEM Dry-Flow air filter
AEM fuel pressure regulator
Walbro 255 in-line fuel pump
3" Stainless Steel mandrel bent exhaust
Custom front crossmember and engine mounts
VW radiator with custom fan setup

280zx front struts/brakes
Nissan Maxima Rear disc brake conversion
Engineered Datsun Products rear brake caliper adapter brackets
Teflon Stainless steel brake lines
Maxima parking brake assembly
7/8" Master cylinder
Mad Dat 15/16" front swaybar with polyurethane bushings
Experimental Engineering idler arm bushing kit
Kelvin's bumpsteer spacers
All new tie rods and ball joints
All polyurethane suspension bushings
Suspension Techniques rear swaybar

S14 5-speed manual transmission
ACT HDSS clutch
Shortened 610 driveshaft
Subaru SVX limited slip differential (3.54 ratio)
610 Half shafts

1973 610 front-end conversion
1973 610 bumpers
BMW Smoked Ellipsoid Headlights
Osram Silverstar H1 bulbs
VW Recaro Seats on custom brackets
Momo steering wheel
Greddy shift knob
New carpet kit
Alpine CD player
Power rear windows


My old 510: