ben yip

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ben yip last won the day on November 28 2018

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About ben yip

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    Corolla Ascent
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    New South Wales
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    0 to 5000
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    Motorsport & Racing

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  1. Car was struggled with engine light on after camshaft upgrade. Light was "engine is running too rich". The fix is to clean the MAF sensor again. Now the engine light is gone. Performance has picked up a bit. Last time the car produced 98kw at the wheels with engine running rich and poor wheel alignment. I think it is running around 99kw at the wheels now. It is estimated to produce 136kw at the flywheel at 6000rpm, and if I remove all the seats away, it weights just 1200kg now In first gear rolling start, wheel spin is a lot more more before second gear. Fuel economy has also significantly increased. Around 6.5L/100km around town if I drive at very low RPM. 6th gear can cruise around town at 1500rpm. It can also go more uphill than before, so the engine has definitely more torque than before.. I have also bought a Lithium battery for <$500 dollars, it weights only 2kg instead of 12kg stock.Battery is from I took out the front seat(20kg each), and test the car. Car feels a lot more faster, and I am still on heavy 16 inch factory rims Next mod is Enkei RPF1 17x7 wheels, which is very light weight The ECU is still a major bottleneck to me. No workshop like to modify Corolla ECU, the RPM limit is still a show stopper
  2. Was doing a ECU job, here is the ECU diagram
  3. Camshaft and ECU has been done. Not much power being picked up. 98kw at the wheels at 6000rpm. Rpm limit cannot be increased, what a bummer. It is faster, but I was expecting a lot more
  4. Terry, could you tell us more of your stories. Is this engine reliable for Lotus as a race car? How about naturally aspirated of this engine to 8000rpm, I saw MR2 doing this engine swap quite often? A gasket set is around $700, is that correct? and how much is the bearing, and how many man hours require to strip and reassemble?
  5. I always use Toyota factory ones, iridium, very good. I don't know much about ignition coils
  6. some articles about dyno, our dyno dynamics are very good
  7. Squalled has nailed it..If you can run three inch with a ecu tune. That might produce more hp according to the info at 1zz and 2zz I am running three inch pod filter on my 2zr using injen cai. But the tubing at two steps. From throttle body to the maf sensor, 2.5 to 2.75 Just 2 inches before the pod filter, it changes from 2.75 to 3.
  8. A bit of research about flywheel weight Honda Type R (NA) - around 6kg Toyota 2ZZ-GE - around 6kg My corolla 2ZR-FE - around 10kg This should explain why in 2ZZ-GE, dyno will read around 108kw at the wheel when stock, only 24% loss and my car will read only 70kw at the wheel when stock, 30% loss.. Honda Type R (NA) reads around 110kw stock at the wheel.
  9. Looks like the MAF is not in a good position, or the tubing is too big. In 1zz, 3 inch tubing requires a retune of ECU.
  10. Good, do you mind if I ask how much is the rebuild cost for labour?
  11. Have you found any engine builder you can trust?
  12. Also in Connecting rods Select stock or upgraded connecting rods for naturally aspirated and lightly boosted engine combinations. For serious turbocharged, supercharged or nitrous applications we strongly recommend upgrading to Crower billet connecting rods for additional safety and strength. I recommend getting a short block from them and put into your engine, in order to prevent careless mistake from mechanic in rebuilding engine. For the 2zr ones. Although the power rating is 650hp, but the rod bearing will fail first, if you look the the com rods for 2zr You better ask mwr for advice as they have a lot of experience in 2gr
  13. MWR said stock is cast.
  14. Have you found out what went wrong with compression? Any engine oil consumption? Sorry, for piston change , I cannot find any quick way. I can only find quick way to fix oil leak in valve seal. Is your problem happen all in a sudden or over time? What rpm does it happen?