got lucky at black friday so we decided to upgrade the RX-3 with some gangdam style



here's the initial start-up, still need to install the 51 and set the timing. excuse the crappy phone video

 

Looks and sounds great!!! what did you do on your exhaust? it kinda sounds like mine on the vid....

 

dual 2.25 pipes with 1st gen presilencers into a single 2.5 RB universal muffler

 

very similar to mine... are you using the thick walled tubing? I did and i think it helps alot with the tone but maybe its in my head... lol

 

yeah, nothing special with these pipes (East LA special lol) but it would be louder without the presilencers. I'm actually using a GSL-SE single exhaust header (clears the idler arm) with rear flange removed to accommodate the duals. The muffler guy installed the pipes as straight as possible, barely have any space between the presilencers and the floor board.

Due to less bend, I believe it has a much better flow than my other RX-3 with an old school Rotary Engineering 13-B header (header has a slight inward turn instead of straight).

 

Nice!!!!

 

that motor sound nice ..

 

Sound very good.What carb are you gonna use? lol

 

this shiny thing to match the shiny intake, rotor housing, front cover and the transmission LOL. 52mm, not 51.5, according to JC. I miss the instant grab of my old 13-B street port already, so its time to switch back to 4.44 or 4.78 kia gears

 

Put a turbo on it

 

that sound good ..

 

Im content with N/A i hope this bridge can handle my driving habit . Lol

 

Come pick up the NOS kit the bottle is nice n shinny too. LOL.

 

Dang!! that webber looks mean! Does that fit the 51 intake? Been thinking about upgrading.

 

IDA flange is standard so it will fit a pp intake. 250 miles to go, cant wait to install the 4.44 and tune (currently on the conservative side) it properly so I can drive it like I stole it. anticipates another 100+ miles this coming saturday, heading to cars & coffee-irvine and puente hills mazda meet after.

 

Just an update:
Bridge is boring below 6K RPM so I installed my extra 4.44 diffy. Now, powerband starts around 4.5RPM. Early Saturday, no cars on the freeway so took it on a rolling start, 2nd to 4th went approx 10.5K RPM and 5th to above 9K. I was hesitant to go any higher than 10.5K RPM since my aftermarket tach only goes up to 10K and I only have a single MSD 6A plus I held back due to bumpy LA freeway. No hesitation or fuel starvation using a carter 7PSI, holley regulator open all the way but I do have a return line with a restrictor from the 52MM IDA. The restrictor is actually a one-way check valve off 79-80 RX-7 with a 170 weber air jet as a restrictor.

However, soon to be installed is a holley blue (spring stretched for higher pressure) and a modified holley non-bypass regulator to bypass (no check ball, outlet/inlet reversed) to ensure that there is no starvation. Got to keep it old school I like having a return line to prevent a vapor lock and to prevent fuel pump from overheating.

Bridge is too noisy for street use but I don’t really care. There is no point in making it quiet as it will affect the performance of bridge

 

I hope I can keep up to you in my 12a turbo sedan

 

I guess there is only one way to find out.





you got to catch up to me first lol

 

I want to experiment with a 4.30 R&P off an honda S2000

 

Try it, Mel, and let me know how it goes. Been pondering a R&P on my RX4 for quite a while. Have you tried any from the older Toyotas (80s Corolla or Celica, MR2..etc)?

 

Before the 4.44, cruising speed was below 4K RPM and by the time I reach the power band (6K RPM), I have to let off the gas due to traffic. Now, Im crusing at 6K RPM, very nice and all but I still need to find what will work best for street and freeway driving.