drwharton85 Posted August 25, 2008 Share Posted August 25, 2008 I have been searching for info on the RB20DET built to a RB24DET with the RB26 crank and bored out to 81-82mm. That seems to be all the info i can find. Is there some one on here who has done this and got great results? What kind of power are you making at the wheels? What turbo setup did you go with? Quote Link to comment Share on other sites More sharing options...
drwharton85 Posted September 4, 2008 Author Share Posted September 4, 2008 I have found that with the Rb20det build up there are a few different ways to go. Using the RB20 block. 1. RB24DET= RB26 crank & rods + 4AGZE 81.5mm pistons 2. RB22DET= RB25 crank & rods + 80 mm bore 3. RB22DET= RB20 crank & rods + 82mm bore HYBRID MOTOR 4.RB24S= Rb25 block + RB30E head + RB20 crank & rods This is suppose to be a much higher revving engine do to the smaller stroke. This engine is suppose to have alot of torque to. If any of my information is incorret please feel free to correct me. Thanks, Donald Quote Link to comment Share on other sites More sharing options...
Stealth-Z Posted September 4, 2008 Share Posted September 4, 2008 #4 is a motor I came across while in the Philippines a few years ago. It came in their Nissan Cefiro. Funny seeing a carburator on it. Quote Link to comment Share on other sites More sharing options...
drwharton85 Posted September 7, 2008 Author Share Posted September 7, 2008 I know that the order of engines that can handle the most power on factory internals is. RB26DETT- 600hp RB30ET- 500hp RB25DET- 450-500hp RB20DET- 300-400hp Even though some of the engines are larger thus able to create more power. Is the reason that the factory RB20DET can only handle 300-400hp is because it's internals are not as strong as the RB26 or RB25? Quote Link to comment Share on other sites More sharing options...
Careless Posted September 8, 2008 Share Posted September 8, 2008 tighter crank case, smaller rod/crank package = less rigidity. better chalk that RB26DETT to 680rwhp on factory internals, as proven by Boozt3d. Quote Link to comment Share on other sites More sharing options...
drwharton85 Posted September 8, 2008 Author Share Posted September 8, 2008 So with factory RB26DETT crank and rods with after market forged pistons. What do you think the RB20 can handle comfortably? Quote Link to comment Share on other sites More sharing options...
drwharton85 Posted September 19, 2008 Author Share Posted September 19, 2008 currently am in search of RB20DET performance parts and will post links as soon as I can. If anyone knows where to finf the following parts please post? Vibration Damper-? Light weight flywheel-? Rear sump oil pan-? Valves-? Exhaust Manifold-? Note: I have found some of these products but I am still searching for better parts. Quote Link to comment Share on other sites More sharing options...
Careless Posted September 19, 2008 Share Posted September 19, 2008 RB25 flywheels will work on the RB20 200ZR oil pans are factory ON the japanese RB20DET in the Z31. A lot of parts can be found at JGY. http://www.jgycustoms.com/ Quote Link to comment Share on other sites More sharing options...
Z24O Posted September 19, 2008 Share Posted September 19, 2008 I know that the order of engines that can handle the most power on factory internals is. RB26DETT- 600hp RB30ET- 500hp RB25DET- 450-500hp RB20DET- 300-400hp Even though some of the engines are larger thus able to create more power. Is the reason that the factory RB20DET can only handle 300-400hp is because it's internals are not as strong as the RB26 or RB25? there may be some examples of RB26's making that horsepower,but there are plenty of examples of ones that failed well before that figure.....spun bearings,cracked blocks,oil pump failures i have yet to hear of an RB30 block failing and spun bearings are not common to my way of thinking the ultimate is the RB30 block with the RB26 head...nissan heaven...look at RIPS efforts as the old saying goes,there is no replacement for displacement....even in turbo form the RB30 will make more torque at lower revs ,and perhaps this is the key to it's longevity,keep it below 7500rpm unless you are investing in an aftermarket harmonic balancer though Quote Link to comment Share on other sites More sharing options...
drwharton85 Posted September 19, 2008 Author Share Posted September 19, 2008 Thanks for the replies guys! Has anyone purchased a after market harmonic/vibration damper? If so where did you get it and how much? Quote Link to comment Share on other sites More sharing options...
Evan Purple240zt Posted September 19, 2008 Share Posted September 19, 2008 Thanks for the replies guys! Has anyone purchased a after market harmonic/vibration damper? If so where did you get it and how much? http://www.rawbrokerage.com Ricky runs that joint, he is on another forum. Ross machine is now making sweet harmonic dampers. Evan Quote Link to comment Share on other sites More sharing options...
BlueRB240 Posted September 23, 2008 Share Posted September 23, 2008 You can find rods here too http://www.spoolimports.com/ Quote Link to comment Share on other sites More sharing options...
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