Throttle Body Diameter Size from 1.5L – 1.8L

Posted On 28 Jan 2008 By Bart Piotrowski. Under: D Series Engine, Fuel System, Intake, Throttle Body.
Throttle Body Diameter Size from 1.5L – 1.8L While doing my engine swap from D15B7 to D16A(D16Z6) I had to swap my throttle bodies around to figure out why my car was running funny and while doing so I noticed that both looked the same size inside. After doing some research on the net today I found that they are both 56mm in diameter so it does not matter which one i use. Below is a picture of my throttle body and also a chart of Honda's throttle bodies from D15B7 to B18C5. Honda Throttle Body Diameters d15B7 – 56mm d16a6 – 55mm d16y7 – 56mm d16y8 – 56mm d16z6 – 56mm ZC – 55mm d16a1 – 55mm d16a8 – 55mm b16a SiR – 58mm b16a SiR2 – 60mm b16a2 – 60mm b16a3 - 60mm b18c1 – 60mm b18c5 – 62mm b18a – 58mm b18b – 60mm ... Read More

Fuel Gauge Installed

Posted On 26 Jan 2008 By Bart Piotrowski. Under: 1993 Honda Civic Project, Fuel System.
Fuel Gauge Installed I installed a B&M fuel pressure gauge last night and now I have a better understanding how my fuel pump and fuel pressure regulator are working together. When the vacuum hose is connected between my fuel pressure regulator and my intake manifold I get 31PSI at idle and 40PSI at full throttle and when I disconnect the vacuum hose it jumps to about 40PSI. From what I have read on the honda forums this seems to be a normal reading for a stock system like mine. Once I add bigger injectors and and turbo I will have to get an adjustable fuel pressure regulator and bump that up to 45-50 PSI with out the vaccuum line connected. Below is a picture with my gauge showing 31PSI at idle. ... Read More

Twitch In The Idle Is Gone Now.

Posted On 24 Jan 2008 By Bart Piotrowski. Under: 1993 Honda Civic Project, Fuel System.
Twitch In The Idle Is Gone Now. The engine still had issues running rough the last few days and I didn't have time to do the valve adjustment to see if that would help so I messed around with the sensors last night and added some fuel injector cleaner into the tank and this morning it seems to be good. I also had a fuel odour coming out of the engine compartment but couldn't see anything leaking badly but with a closer inpection and a sniff test I narrowed it down to an injector. I pull that injector out and I guess when I swapped the injectors last week i must of kinky the seal on this one, so in the future I will spray some WD-40 on the seal so it goes easier into the fuel rail. This morning there was no more fuel odour and engine ran better after adding the fuel injector cleaner and messing around with the sensors. ... Read More

Fuel Injector 101

Posted On 18 May 2007 By Bart Piotrowski. Under: Fuel Injectors, Fuel System.
Fuel Injector 101 Great link about the maximum HP you can run with your stock injectors RTR Performance. So looking at this formula 92-95 Stock injectors are 240cc divided by 5 = 48HP per injector so 48HP times 4 =192HP So the stock injectors are good for upto 192HP more or less, I would say if you running anything more then 170HP i would run better injectors just to make sure you have enough fuel flowing into your cylinder. These numbers are just a overall rating because it there are other factors to consider such as dirty, old or used up injectors which now would be working at less then maximum efficiency. Here is a list for more Honda injector Flow rates Accordingly Done Another great link for figuring out the proper injectors. RCENG ... Read More