Carbibbles

Ok I think that has it pretty much solved. Thanks a ton for the help niZmO_Man The manifold I have right now is an AFI Turbo, its very similar to the full-race. It will probably be up for sale soon haha, ill probably buy a sinco unless its a pain to ship from NZ in which case ill just build one based on 6boost/sinco design.

It sounds good but id say thats more of the standard RB sound, really just playing with mufflers to get the exact note you want. I think niZmO_Man is on to something, those manifolds looked kind of like 6boost so I started youtubing 6boost mani cars and they all seem to have the sound I want. Im thinking that the runner length and arrangement of the 6boost manifold might be whats getting this sound. Thanks for your response niZmO_Man

Thanks for the link, I couldnt find in the thread but do you know what exhaust manifold he is running. And is that car straight pipe? Yes thats it, do you mean one of those manifolds in particular or a tubular manifold in general? I have this one right now but id be willing to fab up one with a different design if that has something to do with it.

I wouldnt say its stupid, why cant I have the sound that I love so much? The sound of these engines really is one of the primary reasons im staying with it. I could easily swap it out for a 2JZ and spend a ton less money making big power. I want to run a straight through exhaust because I think that is something all these cars have in common, normally I would prefer a resonator at least. I like a loud exhaust but im not one to try and have an insanely loud exhaust. I am willing to change turbos (within my power goals) and fabricate another turbo manifold if I knew exactly what features contributed to the sound I am trying to acheive. I have also tried contacting the people with these cars but no success, asking here was a last ditch effort because I figured the guys on here have been around a lot of RBs and might be able to easily give some info on the subject. I can see your point but the sound I am hearing is so distinct that I know its not just a microphone/speaker inaccurately re-producing it. I have heard this exhaust note from all three platforms you mentioned so I know its not tied to the displacement base.

Did you watch the videos? Its definitely not the wastegate(s), I had planned to do atmospheric dumps on my wastegates but I know that wont get me the particular sound im after. There is a distinct difference between the first set of videos and the second. Im sure this post/thread comes off as ricey but I know what im doing and the exhaust sound is important to me. I really dont want to spend a ton of money and time fabricating/re-fabricating parts to get the sound im after. I was hoping someone who has been around a lot of RB cars would be able to identify and give some experience based input to what kind of setups produce this particular exhaust sound. There arent any other RB cars in my area, and really not a lot in the USA compared to other countries. Its hard to track down information that I would usually be able to collect by just going to the dragstrip and asking people about their setups.

See at first I thought it had something to do with a larger than normal exhaust (straight pipe of course), like running a 3.5" instead of 3". But ive watched some videos of cars with 3.5" and even 4" that dont seem to get this sound. I have a twin scroll tubular manifold waiting to go on, and ill be running a borg warner s366.

So I think ive watched every RB video on youtube haha. There is a very specific sound that I would like to get from my rb25 but I cant seem to pinpoint exactly what brings out this sound from these engines. It might sound crazy but the sound of these engines was one of the primary reasons for my choosing it over a JZ engine for my swap, so I want to get the exact sound from it that I like. Its hard to get much tech info from any sources here in the states so I figured you guys would be the best to ask. As far as I can tell from videos it doesnt really matter if its an rb26, rb25, rb30, or rb25neo, they all sound pretty much the same given the same setup. Here are a couple standard sounding RBs, im sure you all know what an RB sounds like but I guess ill put these here to kind of set a baseline. Just your average RB sound I really like this one, but not quite the sound im talking about https://www.youtube.com/watch?v=j9YOBLjjTJs This one is getting closer but still not there And here is the sound im trying to achieve, its kind of a crunchy screaming wail and higher pitch than the previous videos. https://www.youtube.com/watch?v=6LMv_Rp1VEg&list=FLmjK5nvga3Hx18GsD4dhE8Q&index=20 Does anybody know what these cars might have in common in the engine/exhaust that give them this sound? They seem to be straight pipe but I dont think this is the main thing that gives the sound. Thanks

Hey all, im trying to get a good oil pump system figured out and id like to have some input on the setup I would like to run. I want to keep it a wet sump system with a modified stock sump. I would be using a moroso external oil pump to scavenge oil from the sump and pump it into a surge tank that has an overflow back to the sump. Then pump the oil from the surge tank through an oil cooler and back into the block at the point where the stock pump discharges its oil. Then the oil would travel as stock to the oil filter and then to the engine. 2 questions: 1: Would it be better to weld fittings to the bottom of the sump and scavenge oil from them. Possibly add a screen for large debris? Or would it be better to tap into the stock oil pickup somehow? 2: The above would require a 2stage pump but I was wondering if I could use a 3stage and use the 2nd scavenge section to pull oil from the back of the head? This would aid in removing oil from the head but im wondering what would happen at idle when there is barely any oil to scavenge here, would this run this scavenge section dry and cause damage to the pump? Or would it be better to run the 2nd scavenge to a high area of the crankcase and basically just create a vacuum in the crankcase?