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Kingtal0n · 06-13-2012, 03:49 PM

Sir Bob:
Hi, my name is Bob and I own an RB20DET engine. I just bought the car with it. It has the factory turbocharger and computer and it runs great! I want to upgrade the turbocharger and make it faster. I don't have very many tools and I dont own a shop or a lift and I don't want to spend alot of money.

Kingtal0n:
Bob, please do not modify that engine, especially with a larger turbocharger! You cannot afford to replace that engine if a piston melts, which is quite possible considering the track record for RB engines whose factory cast components will NOT tolerate abuse! If it runs great now, just drive it and enjoy the sound of it, take care of it and change the oil every 2,200 miles if possible, maintain a functional PCV system and a proper high quality air filter, use a full face street clutch and maintain the A/C...

Many people are changing turbochargers instead of A/C components. I say go for the A/C and make it really comfortable to drive and enjoy the factory components, including turbocharger and ECU, install a wideband to keep an eye on a very important number when it comes to engine health, add some comfy seats, seal up the windows really good and replace the rubbers on the car to get it quiet inside.

If the engine is tired, high mileage, compression is low, oil turns black quickly, it has multiple leaks, it may be time for a real rebuild. If a quality low mileage longblock cannot be sourced, you will have to rebuild yours, and it will probably require machine work to bring certain tolerances back to OEM acceptable, or even just to acceptably clean the block, everything could be stripped down to the core and cleaned/replaced as needed. Everything must be kept incredible clean, and you should have the engine built in a room with air filters, like a room for painting a car, if possible. The cleaner the components are, and more precise the measurements are, the better the build can be. It is possible to turn out an engine that will go for 200,000+ Miles with very little maintenance, He used a dial bore gauge and checked the FSM for acceptable numbers before installing the crankshaft. Colors are noted, but compared, and wear was accounted for.

06-13-2012, 03:49 PM	#11
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 42 Posts: 4,829 Trader Rating: (17)	Sir Bob: Hi, my name is Bob and I own an RB20DET engine. I just bought the car with it. It has the factory turbocharger and computer and it runs great! I want to upgrade the turbocharger and make it faster. I don't have very many tools and I dont own a shop or a lift and I don't want to spend alot of money. Kingtal0n: Bob, please do not modify that engine, especially with a larger turbocharger! You cannot afford to replace that engine if a piston melts, which is quite possible considering the track record for RB engines whose factory cast components will NOT tolerate abuse! If it runs great now, just drive it and enjoy the sound of it, take care of it and change the oil every 2,200 miles if possible, maintain a functional PCV system and a proper high quality air filter, use a full face street clutch and maintain the A/C... Many people are changing turbochargers instead of A/C components. I say go for the A/C and make it really comfortable to drive and enjoy the factory components, including turbocharger and ECU, install a wideband to keep an eye on a very important number when it comes to engine health, add some comfy seats, seal up the windows really good and replace the rubbers on the car to get it quiet inside. If the engine is tired, high mileage, compression is low, oil turns black quickly, it has multiple leaks, it may be time for a real rebuild. If a quality low mileage longblock cannot be sourced, you will have to rebuild yours, and it will probably require machine work to bring certain tolerances back to OEM acceptable, or even just to acceptably clean the block, everything could be stripped down to the core and cleaned/replaced as needed. Everything must be kept incredible clean, and you should have the engine built in a room with air filters, like a room for painting a car, if possible. The cleaner the components are, and more precise the measurements are, the better the build can be. It is possible to turn out an engine that will go for 200,000+ Miles with very little maintenance, He used a dial bore gauge and checked the FSM for acceptable numbers before installing the crankshaft. Colors are noted, but compared, and wear was accounted for.