Midri Posted October 31, 2015 Share Posted October 31, 2015 (edited) So I picked up a bunch (6) of 240sx throttle bodies for basically nothing and was playing with them when I realized I could chain them all together and use them as individual throttle bodies for an L28. Would need custom runners made with injection ports, but that's fairly easy to fab up... I could also maybe do 1 intake per 2 cylinders and use the 3x mikuni carb intake... That's all stuff we're going to play with... My question to you smart people is how is the air metered in an EFI ITB? I've looked at a bunch of pictures and install guides and have not seen any indication of intake O2 sensors and obviously you can't use a MAF. Edited October 31, 2015 by Midri Quote Link to comment Share on other sites More sharing options...
Tony D Posted October 31, 2015 Share Posted October 31, 2015 Generally a log manifold for balancing is used, 1/2 inside diameter. Fuel Rail stock works nicely. Take the MAP sensing off one end. There is no reason MAF could not be used if the air filter box was properly set up and metered on the inlet. The RB26DETT used ITB's in a plenum surge tank arrangement. Two of those bodies on an SU Manifold has been done. Check Petes thread about it. Quote Link to comment Share on other sites More sharing options...
NewZed Posted October 31, 2015 Share Posted October 31, 2015 (edited) Would need custom runners made with injection ports, but that's fairly easy to fab up... Here's an interesting thread. http://forums.hybridz.org/topic/55119-making-my-own-efi-intake-system/ Seems like you're interested in just piecing a bunch of parts together to see what happens (re your Mix and match thread). Like a rat-rod, but instead a "rat-engine". There's a lot more thought and design work that goes in to making something that works well. Probably get some good WTF!'s when you're done though. Here are some good coments about just one 240SX TB - http://forums.hybridz.org/topic/54029-240sx-throttle-body-on-a-280z-l28/ 6x60= 360 Edited October 31, 2015 by NewZed Quote Link to comment Share on other sites More sharing options...
johnc Posted October 31, 2015 Share Posted October 31, 2015 You're really thinking about putting six 60mm throttle bodies on a L6 engine? Are you serious or is this a troll post? Quote Link to comment Share on other sites More sharing options...
Midri Posted November 3, 2015 Author Share Posted November 3, 2015 (edited) You're really thinking about putting six 60mm throttle bodies on a L6 engine? Are you serious or is this a troll post? Serious, I've got them just sitting here... Why not try it? Engines not going to be left stock, obviously. Have headers on it now, looking getting one of my P79 heads worked on to increase airflow. Edited November 3, 2015 by Midri Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted November 3, 2015 Share Posted November 3, 2015 6 60mm throttle bodies feeding a P79 head is a little like putting a 4" exhaust tip on a stock Honda. Your restriction is the head, and 3 60mm throttle bodies would be overkill. Quote Link to comment Share on other sites More sharing options...
NewZed Posted November 3, 2015 Share Posted November 3, 2015 My question to you smart people is how is the air metered in an EFI ITB? I've looked at a bunch of pictures and install guides and have not seen any indication of intake O2 sensors and obviously you can't use a MAF. Back to the original question. You mentioned a MAF(Sensor) and O2 sensor. Those two things do not serve the same function, one is quantity and one is air-fuel ratio. One is before the combustion process, one is after. One is on the intake system, one is on the exhaust. You're in an interesting spot, knowledge-wise. You write like you know, but hopefully, (for you) you don't spend the same way. You should spend more time learning before you spend more money. Quote Link to comment Share on other sites More sharing options...
TimZ Posted November 3, 2015 Share Posted November 3, 2015 Back to the original question. You mentioned a MAF(Sensor) and O2 sensor. I was hoping he meant MAP instead of O2 Quote Link to comment Share on other sites More sharing options...
madkaw Posted November 3, 2015 Share Posted November 3, 2015 Damn, I'd like to just find one TB cheap, and you got 6- lol You would run a MAP sensor of some kind would be easiest. Quote Link to comment Share on other sites More sharing options...
johnc Posted November 4, 2015 Share Posted November 4, 2015 Install one and then bolt the other 5 to the hood. Quote Link to comment Share on other sites More sharing options...
Lurcher Posted November 4, 2015 Share Posted November 4, 2015 Install one and then bolt the other 5 to the hood. This ^^^ I'm betting it won't actually pull enough vacuum to run, let alone idle. But PLEASE go ahead OP...! Quote Link to comment Share on other sites More sharing options...
Tony D Posted November 4, 2015 Share Posted November 4, 2015 "Tip In Response is somewhat touchy." Quote Link to comment Share on other sites More sharing options...
Midri Posted November 7, 2015 Author Share Posted November 7, 2015 I was hoping he meant MAP instead of O2 I did. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.