Subaru conversion into speedster
Posted: Wed Sep 24, 2008 3:25 pm
I haven’t been back to the site for a long time, mostly due to being to busy at work but i will start visiting and posting details.
My ride is a black speedster fitted with a SJ20 2 liter turbo charged Subaru motor. The conversion was done by Signature performance that did a fantastic job. Marius has lot of experience in engine conversions not just into beetles. He engineered the adaptor plate, flywheel adaptor in fact the entire conversion in house. Give him a call on 0760777342 and tell him "black Speedster" sent you.
Other mods that I have done include rear disk brakes from goldwagen (drilled to take 5 x 100 wheels and a custom front disk brake setup. We used disks from a seven series BMW, machine the centres out and turned up spacers and hats, we used the front hubs from the goldwagen diskbrake conversion and mounted a set of beautiful Porsche 4 pot calipers (964 if I am correct) This setup works brilliantly, the pedal is quite firm but very easy to modulate. I thought I might need to put a brake biase adjuster in but it is not necessary. Am I allowed to mention suppliers on this forum?
With the first motor installed (yes it has gone on to where dead engines go!) it made 183KW on the wheels and 285nm of torque. Not bad for a car that weighs 850kgs!
Needles to say it goes like stink! Ask the driver of the new BMW M5 (V10) about the little black car that gave him a hiding!
The wheels are TSW splits with 225/40-18 all round. Traction is just amazing with almost no wheel spin. I have installed a custom flywheel with the water cooled 2.1 kombi pressure plate and standard clutch and it seems to be coping quite well with the power.
I have a perfect power engine management system installed, the XMS4 with sequential injection and wasted spark ignition. A lambda sensor is fitted to correct the fueling. Helps a lot when setting up the car.
Back to the motor, on a beautiful evening dragging between two circles (long way home!) I uncounted a small electrical problem, the number one rod went through the alternator. No not really the alternator is just fine however the rod bolts snapped and sent the rod through the block. You have never seen so much smoke! I nearly shat myself. By the way the motor still ran just fine on three but I was to chicken to drive it like that! Coming back to the smoke I was standing there with my brand new fire extinguisher just waiting for the oil to ignite on the hot turbo and or exhaust fortunately it never caught fire.
I replaced the motor with another JAP import and this one lasted about 5000kms before it ran a bearing. I have now stripped the motor and found that the crank is still perfect. I will be putting a nice set of rods and forged pistons in soon. I will also fit a new oil pump, water pump, cam belt, cam belt tensioner and new pulleys (going to cost a buck).
for good measure I am going to install a bigger turbo and aftermarket waste gate. I want to run about 1 bar of boost and the previous setup seemed to top out at about .6 - .7 bar boost. Should be good for about 200kw. I want to be able to rev it to about 8000rpm, which I am told is doable.
My ride is a black speedster fitted with a SJ20 2 liter turbo charged Subaru motor. The conversion was done by Signature performance that did a fantastic job. Marius has lot of experience in engine conversions not just into beetles. He engineered the adaptor plate, flywheel adaptor in fact the entire conversion in house. Give him a call on 0760777342 and tell him "black Speedster" sent you.
Other mods that I have done include rear disk brakes from goldwagen (drilled to take 5 x 100 wheels and a custom front disk brake setup. We used disks from a seven series BMW, machine the centres out and turned up spacers and hats, we used the front hubs from the goldwagen diskbrake conversion and mounted a set of beautiful Porsche 4 pot calipers (964 if I am correct) This setup works brilliantly, the pedal is quite firm but very easy to modulate. I thought I might need to put a brake biase adjuster in but it is not necessary. Am I allowed to mention suppliers on this forum?
With the first motor installed (yes it has gone on to where dead engines go!) it made 183KW on the wheels and 285nm of torque. Not bad for a car that weighs 850kgs!
Needles to say it goes like stink! Ask the driver of the new BMW M5 (V10) about the little black car that gave him a hiding!
The wheels are TSW splits with 225/40-18 all round. Traction is just amazing with almost no wheel spin. I have installed a custom flywheel with the water cooled 2.1 kombi pressure plate and standard clutch and it seems to be coping quite well with the power.
I have a perfect power engine management system installed, the XMS4 with sequential injection and wasted spark ignition. A lambda sensor is fitted to correct the fueling. Helps a lot when setting up the car.
Back to the motor, on a beautiful evening dragging between two circles (long way home!) I uncounted a small electrical problem, the number one rod went through the alternator. No not really the alternator is just fine however the rod bolts snapped and sent the rod through the block. You have never seen so much smoke! I nearly shat myself. By the way the motor still ran just fine on three but I was to chicken to drive it like that! Coming back to the smoke I was standing there with my brand new fire extinguisher just waiting for the oil to ignite on the hot turbo and or exhaust fortunately it never caught fire.
I replaced the motor with another JAP import and this one lasted about 5000kms before it ran a bearing. I have now stripped the motor and found that the crank is still perfect. I will be putting a nice set of rods and forged pistons in soon. I will also fit a new oil pump, water pump, cam belt, cam belt tensioner and new pulleys (going to cost a buck).
for good measure I am going to install a bigger turbo and aftermarket waste gate. I want to run about 1 bar of boost and the previous setup seemed to top out at about .6 - .7 bar boost. Should be good for about 200kw. I want to be able to rev it to about 8000rpm, which I am told is doable.



