ForsakenRX7

So wait, all a waste gate exhaust is you cut the piping so that the wastegate has its own exhaust so to speak. It doesnt dump back to the rest of the exhaust. Is that right?

user 84205

Yep that is right, but when stomp on that
gas it sounds good as BALLZ!!! Helps your
reponse too in my opinion.
Jason
JT-Imports
Yokohama Japan

ForsakenRX7

Hmmm, sounds like I got somethin else to do to my TII once it gets runnin. SWEEEEEET.

jspecracer7

That 3 stooges sound that you hear between shifts is Compressed air going back through the compressor/compressor wheel and pushing it backwards. If you were a turbine, would you want that happening to you? I know that I would want my center housing bearings and my center shaft to last longer than just a month. Not from personal experience, and I'm not completely sure of all the details, but when FD Okinawa first got his car running, he was breaking his engine/turbo in at the same time. He wasn't using a BOV. He got his car/turbo broke in, started railing on it, and then his turbo started smoking. Ended up replacing his thrust bearing/thrust collar and changed the center cartridge bearings. While he was rebuilding his turbo, he got a BOV put onto his IC piping. It's been well over 4 months now and he still hasn't "smoked" his turbine.

What the hell do you mean"thats the wastegate if you have no blowoff"? That makes absolutely no sense. You might want to check your flux capacitor in your FD to see if it works.

"WASTEGATE EXHAUST"........what is that. Is that the same as a wastegate intercooler? or a wastegate intake? or a wastegate midpipe? how about a wastegate Power FC?

You'll hear people speak of "porting the wastegate". That simply means that they take their turbine/manifold off of their car, find where the actuator(s) are connected to to regulate boost, and open up the wastegate with a dremel tool or a tool similar in design. Most turbine cars use boost to push an actuator that opens up the stock internal wastegate. From what I can deduct from "WASTEGATE EXHAUST", you are referring to an external wastegate. Works on the same principal as the internal wastegate, but is located on the outside of the manifold, not the inside and are normally 50mm across vs. 20mm(eyeballing it) across like the stock zenkei/kouki FC internal wastegate.

The RUPPPPPPPPPPPP you are referring to is when the wastegate opens up and dumps the excess exhaust gas before it gets to the turbine, thus LIMITING YOUR BOOST. To be completely EPA Legal, the exhaust gas has to dump back into the downpipe before the catalytic converter. However, most race cars(mine soon to be included) will simply have the wastegate dump to the atmosphere......which will make your car sound like....RUPPPPPPPPPPPP when the wastegate opens up.

As for you canman, your whole first post made absolutely no sense to me. This is probably why I am not the only forum member who posted a reply to your initial post.

For the rest of you reading this reply.....My apologies for such a long post.

jspecracer7

I understand that "pro shops" don't run BOV's. But for a daily driven car, and limited funds, why not save yourself the "what if's" and simply get one. If the manufacturer puts one on the car, then maybe it's there for a reason, right?

...and I'd like to see you drive from one coast of Okinawa to the other in under an hour.

jspecracer7

...do you have an external wastegate? If not, then all you're doing is creating a "cheater" gate as we refer to them here.

user 84205

Whatever! You guy have nothing on that island I need, including information. As for what you think, the guys at RE and the rest of the places I deal with, think your head is in your ***. Im not going to sit here and explain it all. I will let the people get their own info and do as they please.

Yes my wastegate is external. Also I have worked with turbines for aircraft and they work the same way. OH **** WE ARE ALL GOING TO DIE, they dont have a Blow Off Valve. HAHAHAHA

user 84205

Well i hope this doesnt come as an insult> BUT the manufacturer didnt put all that crap on your car, so maybe it wasnt there for a reason. BIG turbo, I guess we cant have one/ or injectors or anything aftermarket because the manufacturer didnt put it on there. HAHAHA just stop your killing me....

jspecracer7

They had that stuff on my car, but I decided to upgrade them. The stock FD comes with relief valves, so why not "upgrade" them?

jspecracer7

I did not ask you if YOUR wastegate was external, I asked Forsaken RX7 if his was external.

I also did not disclaim how well RE tunes his car, or any other tuner shop in mainland for that matter. They do an outstanding job of tuning cars, and that's why people will pay big amounts of Yen to have them tune their cars too. If I was made of money, why would I get my hands dirty...simply bring my FD over to AmemiyaSan and have him do all the dirty work for me. I was stating that many of the top tuner's have shop cars that only see track time, and are rarely street driven. The shops have tons of money to burn, and have spare everything, so if something breaks, just reach across the shelf and pick up front/rear end plates, intermediate, a couple rotor housing, eccentric shaft, two rotors and now you have an engine. Most people can not do that, so having a bov for "insurance" is probably a good idea.

user 84205

OK I here ya. When I had my MR2 I started at one of those shops, that just grab **** off the ground and say it works. NOT ANYMORE.... Most of my tunning is free at my mechs shop, I get great prices. RE, Hyradshokai and Cockpit I get 15% off which helps. I working that for 20% but that tuff....

ForsakenRX7

Okay, okay. Wait hold up. I personally am new to turbo II. Im used to playin with N/A models. But I'm learnin as I go. So if a wastegate exhaust is ran on an external wastegate, how is that same setup ran on an internal wastegate? Jspec you called it a cheater gate? Hows it differant?

jspecracer7

What Canman6969 is referring to when he says wastegate exhaust is an open air wastegate...when the wastegate hits it predesignated boost, the wastegate opens up and dumps to the air. You can in essence turn your internal wastegate(with some cutting/welding) into an open air wastegate...also called a cheater gate. If I ever get a hold of sleeper SR20's digi-camera, I can take pics of what I'm talking about since I have a stock zenkei turbo in my room...next to my 60-1

Rutt

canman.. I guess I'll stick a sock in your turd shooter! Sorry but I lived in Tokyo for a little while and I went to Jun Auto Mechanic, Essence, Tom's and a couple other BIG shops and they were installing BOV's on their RACE cars. We may be on a small rock in the pacific but there are a lot of good shops here.

Now to get back to BOV's! Do you even understand the purpose of a BOV? Do you speak enough Japanese to communicate with your mechanic? Why do you need a mechanic if you are so technically efficient.

That's enough of that! If you are buying a BOV for the sound you need to sell your car and buy a riced out Honda!

When it comes to pure volume the Greddy Type R (available w/hard or soft spring), Sard Racing, and HKS racing (NoN SS crap) are the top dogs over here. I can not make any comments on the Tial, Bosch or Godzilla because I have yet to observe one in action.

user 84205

good if your so smart. I guess where I park my car on the street I guess I will just put a lift in the street and go ahead and start working on my car, what a moron.
If you have been to toyko you will know there is NO room to work on your car around here. NEXT!!
And again SO you saw some Toyotas BIG woop!! I think the people here were asking about RX7`s and I was just relaying what the mechanics of Japan said! Thanks!

user 84205

ALSO go park that POS honda!!!!

jspecracer7

Gee, Rutt put you in your place and you had to say back to him were nothing but FLAMES...

that Honda that RUTT drives will SPANK most of the FD's here if they don't have their SH*T together...

What do you say RUTT? About low 12's with the T-04E boosting .5 kilos?

Wait till the big man goes T-04S at 1.0 kilos!!!!

dznutzuk

iTrader: (1)

Jesus Christ! How the hell did this end up like this? From what I remember wasn't the issue about what's the best BOV? Canman6969, I think you talk alot of ****! Every country I've been to there's always at least one shop(good or bad) who swear at BOV, until they get shut up or their cartridges go bye bye. Truth is that BOV does protect the turbo some what. Jspecracer do you mean bar(.5kilos and 1.0kilos)? In car racing we measure either by psi or bar, I assume you mean bar. O yeah canman6969, the manufacturer did put all that crap to begin with-it sounds like you bought a modified car and don't know **** about the basics. And you also talk about turbines on an aircraft? Yeah good comparison dumbass-I'd never get into a car let alone a plane that you were touching!!!!

jspecracer7

...Yep. I was referring to bar.

user 84205

I cant believe this thread is still going on....wow...
anyway, I dont doubt that a BOV works a little...
When I talk to the shops, they just dont really seem
to care much about them. Im not sure but they make it sound, more like its cosmetic... Also I cant remember who said a plane and a car arent close to the same thing.. That makes me laugh... You know out of my job, and being a certified composite tech, F-1 has job openings straight out for us. Also, turbines/turbos are the same concept, I do you think airplanes start? A big starter?? Anyway, Im trying to say Im so smart, Im just saying if a lot of race car shops dont use them, why bother? It cant be that bad. Even smaller shops that cant just take stuff off the shelf often dont use then either. Maybe its an RX7 thing..... I have no idea, just info.....Also I was just thinking, maybe its different for the RX7, maybe a rotary thing, because I dont know any piston engine companies that run no air filter, or BOV.. Maybe they know something we dont...

Personally when I had my MR2 I had the HKS, pretty loud, but its a good sound. I got a lot of questions and compliments..
J

dznutzuk

iTrader: (1)

You can't compare a aircraft turbine to our dinky little turbos-are you trying to tell me they work exactly the same? BTW I'm stupid, ok. So tell me exactly how a airplane turbine works-and how it's the same as a turbo setup in a car. Then tell me if it has a wastegate-does it? Or a blow of valve? Or a filter? Are you trying to say not to use a filter also? C'mon, stop the bull and admit that a bov does good! And it doesn't have to be loud, it just has to be good.

jspecracer7

Turbine's are turbine's. Whether it be aircraft or car. It's the rest of the setup that's slightly different.

user 84205

I said back a while ago that I didnt doubt that it does what its suppose to, I posted it on the 1st page after MAX. I just was adding the info about the shops here not using them. Also, NOPE I dont use an aircleaner either, but neither do a lot of RX7 shops over here a long with quite a few other people here on the forum. I wouldnt recommend it on a piston engine though..
Jason

newRX7fan

iTrader: (1)

Corky Bell says not using a bov is ok- it doesn't hurt the compressor. It does get rid of the weird noises though....

As for the original question, what's the best bov, I don't know but avoid Apex. I'm using the one that came with the XS turbo kit and it appears to be leaking. I wish they would have used a different one.

user 84205

Hey NEWRX7FAN who is corky bell? What weird noises are you talking about? The whoo whoo whoo noise?
Jason