Mazda RX8 Huge Power Loss if This is NOT working Properly

Рет қаралды 9,127

2 жыл бұрын

The SSV and Auxillary ports are a huge benefit to the driving characteristic of the Renesis 13b. If these valves are not working properly you are not experiences the full potential of a wicked 200hp rotary engine. Make sure to keep the carbon build up out of these locations for peak performance.
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Пікірлер: 35

@rotaryperfection 2 жыл бұрын

Top rotational valve underneath the black upper intake is the VDI aka "Variable Dynamic Intake". With intake setups, there is always some form of reversion once the rotor closes the port. The VDI opens in the upper rpm to allow that reversed flow to the opposite rotor creating a small super charging effect. When the other rotor closes the port, that reversion comes back and goes back to the other rotor to super charge the other side. The VDI bounces that reversion back and forward until it closes. This is essentially Mazda's version of V-Tech.

@RADPotential 2 жыл бұрын

Thank you!!! Similar operation to the S5 NA cars based on your explanation. Love to learn from yall!!

@sofakingdom3076 2 жыл бұрын

It's amazing how I know you from other videos. =D I have taken quite a bit of advice from you sir. Keep spreading your knowledge.

@e.v.a.l.s 2 жыл бұрын

@@sofakingdom3076 bruh sofa kingdom i've been there

@ItsProbablyFine 2 жыл бұрын

Must be springtime, the 10mm sockets are returning.

@MrMillander 9 ай бұрын

Do you think it would be possible to spray a lot of cleaner down onto these without having to remove the engine?

@christophersnyder4354 2 жыл бұрын

lol I can relate! lost the bolt for the thermostat housing behind the water pump.

@NathanRuhl 2 жыл бұрын

If for whatever reason you can't get a new gasket in time, you could drill the rivets out, soak the layers in a pan of acetone and scrub the coating off with a wire brush. Re coat the layers with some spray on copper gasket.

@cypher1018 2 жыл бұрын

The little screws to hold in each of those APV Barrel valves is like $15 per bolt. The bolt is weak, and it's shouldered. Be careful to not break that bolt like I did doing that job. Blue loctite and screwdriver torque only will suffice for those bolts, otherwise you're up for a wait for one tiny bolt that's made your wallet $15 lighter. Also, you lucked out that that engine didn't ingest that 10mm... I've seen some gnarly damage from a 10mm socket going down a port.

@paulvernon4160 2 жыл бұрын

Just an FYI I'm not sure if it's a part of the world thing, but not all SSVs have the switch to report back to the ECU. Also it is possible(but very difficult) to remove the lower intake manifold without removing the engine, however you do have to cant it over so engine mounts need to be undone and pry bars can be very helpful

@RADPotential 2 жыл бұрын

I did some measuring and I knew it wouldn't just come out. But I for sure haven't tried to tilt the engine over and remove it. Sounds like a lot of extra work. But if you don't have a hoist then that makes sense

@BehzadEghtesad 2 жыл бұрын

tnx for the infos. the vales at how many miles normally they clogged?

@mcgrawde 2 жыл бұрын

Soak those groady valves overnight in a mixture of acetone and trans fluid it does wonders. Hardware stores sell it by the gallon

@RADPotential 2 жыл бұрын

I used some brake clean. Some injector cleaner, and some penetrating oil. Works wonder!!

@mylesfisher3498 2 жыл бұрын

Honestly yeah, brake clean or intake cleaner sprayed on the valves while your wiggling will get the most stubborn ones out.

@jo-qp7mz 2 жыл бұрын

Soaked mine in atf then brake cleaner then sanded burs off and Polish intake manifold and valves she purrs like a kitten now ! Rips hard

@MASSIVEPUFFSGHEE 4 ай бұрын

can the ssv cause idle issues

@RogueA.I. 7 ай бұрын

This is what my SSV looked like.

@williamrivera4878 Ай бұрын

I need some help my rx8 when i give it gas sound like a 2 step back fire at all rpm changed plugs wires coil got great compression

@bdolla5118 2 жыл бұрын

This is the video I needed getting p2004 apv stuck open I can hear cycling turning key on and off

@bdolla5118 2 жыл бұрын

After removing apv motor the gear moves freely but get sticky when fully open sat there for 10 mins moving it back and forth car seems to run better low rpm and butt dyno makes it seem faster then last night Ima do the decarb and hopefully fix the issue until I rebuild the motor

@ve2430 4 ай бұрын

How did you fix the p2004?

@abcars2856 Жыл бұрын

Hi are you in the uk can you fix my rx8

@michaelmeller8538 Жыл бұрын

This is the first video I have found that discusses carbon buildup of the Shutter valves and the gear mechanism that opens and closes them. Kudos to you! I'd bet many a novice has attempted to pull an RX-8 lower manifold has experienced this sticking issue! It gradually makes sense that the engine control module merely dictates information to the vacuum solenoids and they in turn open and close according to demands placed on them with the help of a gear motor driven by vacuum pressure. Simple, eh?

@michaeldinsmore2235 2 жыл бұрын

So you have definitely just convinced me to never buy a renesis, I would have to swap in a 13b if I owned one

@anyau 2 жыл бұрын

all part of the master plan, keeping rx8s cheap >:)

@sofakingdom3076 2 жыл бұрын

I have had my for almost 25k miles with zero issues, but I keep it well maintained, so I suppose that may be why. Nothing great comes without vigorous dedication.

@jo-qp7mz 2 жыл бұрын

Buddy has 145k miles on his rx8 no rebuild unless it happened before he got it at 25k... The rx8 is a amazing car for the price! The only downside to the Rx8 is gas mileage to power ratio 20 mpg freeway with only 220 hp kinda lame.. I get over 25 mpg in my 397 Awhp Evo...

@somewhat7 2 жыл бұрын

11:10 AHAHAHAHAHAHAHAAAA!!!!!!!!!

@ScottJ175 2 жыл бұрын

Man. You make me worry about my 2009. It's a low mileage unicorn (very close to 12k miles). Other than redline every time I drive it anything else I can do to mitigate the carbon. This is making me question my sanity getting into rotary life.

@anyau 2 жыл бұрын

Block omp and premix, nothing else to do really

@ScottJ175 2 жыл бұрын

@@anyau the S2 engine has a completely different OMP system that no one has easily figured out how to block off that I know of.

@sofakingdom3076 2 жыл бұрын

I went full synthetic once I installed the sohn adapter. =D Fresh two stroke at all times. I also have a stage one tune that increases the two stroke added per load and rpm. =] I have to premix less now because I was fouling my spark plugs much quicker than usual.

@mylesfisher3498 2 жыл бұрын

The lack of use of each valve is generally the main reason for them getting carbon locked. Regular high rev shifting can help prevent this. Also spending less time at idle. Many people will let their rx8 warm up before driving thinking its good fo it. All fuel injected vehicles should be driven at light load, low rpm immediately after start up to accelerate the warm up process. Jist sitting and idling will cause more carbon build up. Once it's completely up to temp let it rip! Also you may want to cruise in a lower gear to raise the rpm. This can also help reduce carbon build up. 2 stroke oil can play a big part in renesis reliability even for the S2 modles. It can even help lubricate the aux port vales. On the S1 the oil injectors are pointed diagonally away from the center of the apex seal. That causes the seal to sag over time.

@jo-qp7mz 2 жыл бұрын

Since you have a s2 you can't do omp adapter. You can still add 40w oil I would do a synthetic blend or regular oil. Also for a carbon clean some people do a steam clean some people do zoom zoom cleaner ( seafoam) also check on your coil packs.