Project: FULL RACE 3SGTE
Details: This is a full race 3sgte engine built for circuit racing, we have built many of these engines over the years, we have decided to put the build on the website and give information in layman's terms on the main modification which is the sleeves.
for insight into trd and full race design, we disassembled a full race toyota 503e race engine so that we could study and inspect it, one of the major things that we noticed was that the 503e block is not of Siamese sleeve design like the 3sgte and the honda b20(both of which are known to crack and break sleeves. The 503e has individually cast sleeves similar to say a sr20det nissan or 4g6e evo engine.
3sgte has whats called Siamese-quadruplet sleeve design. With this liner construction, the web distance, or distance between the inner walls of the adjoining cylinders can be considerably reduced as they are cast as a one piece casting, which is then cast into a cylinder block, this is a cheap and accurate way of casting the block.
the above has a few major problems when it comes to high power and performance orientated engine builds, one the the sleeves are very thin, 2 they have torsional weakness, ie if you launch the car the initial shock might crack the sleeves in the 3sgte design but in the 503e that is not the case
we have assessed this 3sgte design flaw with the sleeves cracking by completely removing the stock sleeves and replacing them with custom sleeve setup from Darton Sleeves in the USA, this setup not only cures the sleeves cracking problem permanently but also gives you the option to run a larger bore size not possible with the standard block. these sleeves have run 2-2.5 bar of boost with out any problems with blocks cracking or sleeves breaking.
we have also assessed every other part of the engine as follows, the valve springs we choose will allow it to rev higher - to 8500rpm daily without too much seat pressure, so they do not wear out the buckets or camshafts
the big valve conversion will let it breath better then the latest 4g63 evo or ej20 sti engine, the port and polish with 3 angle valve job will allow it to flow better.
the stage 3 crower cams will allow you to use the complete intended rev range and turbo, the forged wesico pistons can sustain severe duty cycle, the steel H beam rods will hold over 700bhp, the arp fasteners will allow higher torque specs and better bolt strength, the hks cam gears will allow fine adjustment of the timing.
we have used the best parts from around the world, our reasoning behind the parts is not based on price but on reliability, performance and endurance.
attached is the dyno chart of an identical spec engine used for time trial and circuit racing, which is de-tuned for reliability to 530bhp and has been running for over 2 years.
Images: 33
Details: This is a full race 3sgte engine built for circuit racing, we have built many of these engines over the years, we have decided to put the build on the website and give information in layman's terms on the main modification which is the sleeves.
for insight into trd and full race design, we disassembled a full race toyota 503e race engine so that we could study and inspect it, one of the major things that we noticed was that the 503e block is not of Siamese sleeve design like the 3sgte and the honda b20(both of which are known to crack and break sleeves. The 503e has individually cast sleeves similar to say a sr20det nissan or 4g6e evo engine.
3sgte has whats called Siamese-quadruplet sleeve design. With this liner construction, the web distance, or distance between the inner walls of the adjoining cylinders can be considerably reduced as they are cast as a one piece casting, which is then cast into a cylinder block, this is a cheap and accurate way of casting the block.
the above has a few major problems when it comes to high power and performance orientated engine builds, one the the sleeves are very thin, 2 they have torsional weakness, ie if you launch the car the initial shock might crack the sleeves in the 3sgte design but in the 503e that is not the case
we have assessed this 3sgte design flaw with the sleeves cracking by completely removing the stock sleeves and replacing them with custom sleeve setup from Darton Sleeves in the USA, this setup not only cures the sleeves cracking problem permanently but also gives you the option to run a larger bore size not possible with the standard block. these sleeves have run 2-2.5 bar of boost with out any problems with blocks cracking or sleeves breaking.
we have also assessed every other part of the engine as follows, the valve springs we choose will allow it to rev higher - to 8500rpm daily without too much seat pressure, so they do not wear out the buckets or camshafts
the big valve conversion will let it breath better then the latest 4g63 evo or ej20 sti engine, the port and polish with 3 angle valve job will allow it to flow better.
the stage 3 crower cams will allow you to use the complete intended rev range and turbo, the forged wesico pistons can sustain severe duty cycle, the steel H beam rods will hold over 700bhp, the arp fasteners will allow higher torque specs and better bolt strength, the hks cam gears will allow fine adjustment of the timing.
we have used the best parts from around the world, our reasoning behind the parts is not based on price but on reliability, performance and endurance.
attached is the dyno chart of an identical spec engine used for time trial and circuit racing, which is de-tuned for reliability to 530bhp and has been running for over 2 years.
Images: 33