@TGBuild270 it's pretty sick. I just started building up mine for Time Trials in my local racing area. My first track day was last week. It performed well, but there's some tweaking that needs to happen. I'm buying what I can afford in order of importance, so I think coilovers and bushings will be my first "after race adjustment"
What kind of engine mounts are you using? If they are the original stock ones, you might benefit from removing them and filling them with polyurethane, this is what I've done on a street car and I think it improved the feel when getting on power a little bit. Also what have you done to it to improve cooling?
Yea just stock, I'll like to hard mount the engine if I'm honest, along with poly bush the suspension. It's a track car so no need for comfort. It has a triple pass alloy rad, I run stay frosty coolant and have removed all the air box, ecu and just box. I've also recently vented the bonnet. She never gets hot
My lap times were consistently better by around a second. Plus I have about 30hp not being used because I'm not reving it over about 7.5k Clutch is slipping a bit, I don't know if its because its all new or if there's something getting on it.
@dmarshall34 I got mine off an Australian company that I found on ebay. I've checked and it seems they're no longer trading there. Hit Google and I'm sure you'll find someone selling the part online.
FYI bridge ported motor will never idle or run to its full potential on the stock ECU tune. Bending or drilling a small hole in the butterfly does provide additional airflow to resolve the idle issue as you’ve done. But ideally, you’ll need to adjust the tune in the ECU to gain the full advantage of the Bridgeport engine.
Really enjoying your build series. I race an RX-8 in the CSCC Trophy series (essentially standard cars). Looking to make my RX-8 competitive for the trackday trophy regs this next year so will be following some of your footsteps. I've got a 5.3 final drive gear ready to build for mine, did you find you had to shim it to get the end float correct? Are you looking to race your RX-8 too, if so what series are you thinking?
Thanks man, much appreciated. To be fair the 5.3 is probably the better option, I just like to go a little extreme where possible. Yea the diff had to be shimmed a bit. No I don't intend to race it I don't think, I just like mine to be the crazy track car that it is (I'm not a very good driver) I just get out a few times a year to have some fun.
Just a point the ssv is not the item you were pointing to, the ssv is vacuum activated and it's in the intake manifold itself, the item you were pointing to is actually the apv(auxiliary port valve) that opens around 6.5k depending on load, the ssv opens at around 4k then at 7.5k the vdi opens, on a 6 port, the apv is missing on a 4 port, often they are favourite for forced induction because ports are less critically. Either way, good to see people taking an interest IN the rx8 and good luck with the car
@@TGBuild270 what suspension upgrades have you got for the track, uprated anti roll bars are one of the most cost effective upgrades for the 8(whiteline or racing beat)
did you tune the engine for the bridgeport? This is the reason I didn't go for it while I was rebuilding since there was no one in my country that would do it lol.
@@TGBuild270 interesting 🤔 I know you can teach the engine maps and reset them yes, but I thought you get far better results by just tuning it and also tuning the cool braps while your at the tuner 🤷♂️ would love to see the power differences with and without tune.
@MassiveDrop this one braps with not tuning. Ecu is completely stock, never been plugged it. I imagine you can squeeze a few hp out of the top end with a map but I'm very much a "mazda knows best" when it comes to these engines. Well see how it is on track and if I think I'm leaving something on the table I'll get ut tuned and see how that goes
Hey bud, been watching you for a while continue the work cant wait to see it on track. L If you wouldnt mind me asking how did you bend the butterfly on the tb? Im having a issue very similar on my 8 and can only imagine it being the porting, no vac leaks, no inj issues and no fault codes. I will have a spare tb so might try bending it with your trchnique and hopefully that will help it if not ill replace it with the spare. Thanks in advance
I just opened the butterfly, popped a bit or cloth on there and bent it with a pliers. It does require a little bit of time as it'll need several adjustments to get it where you want it. Hope this helps 👌
@@TGBuild270 hey, thank you for gettng back. Makes sense ill give it a go. When the adjustment was too much how did you know? Obviously it being to little it will do the same but being tok much would it stay started? Thanks
@joflexx.. it'll idle to high, the problem is the ecu does take time to adjust so adjust it to roughly where it idles nice then go drive it for a few miles, let it idle for 10 minutes, switch it in and off a few time and it'll probably change, then adjust it up or down as need and repeat
I'll give you the same advice my farther and brothers gave me when I said I wanted to be a mechanic. Don't do it! If cars are something you genuinely enjoy and want to get into, do it as a hobby, if you make it you're job you'll learn to hate it.
you need to increase the idle speed to stable (judging by the first minutes of the video). The cross section of the exhaust system seems unnecessarily large. Are the ignition coils standard? It is better to use something more powerful such as coils from Chevrolet LS series engines. 5.8 - In my opinion very short gears... On stock gearbox and stock tires: 1 gear /9000 rpm ~ 50 km/h, 2 gear ~ 84 km/h, 3 gear ~ 124 km/h, 4 gear ~ 162 km/h, 5 gear ~ 190 km/h, 6 gear ~ 242 km/h this is according to calculations
Unfortunately I use thruxton circuit, it had a 90 dB noise limit so all that exhaust is very necessary. Coils are OEM, yes. 5.8 is very low, it will put my top speed around 130 but that's enough for most of the UK tracks I use
Who cares it braps everyone forgets they weren’t a high horsepower car anyways a Honda civic single cam makes same damn horse power but it don’t brap lmfao braps are cooler slow or fast
These modifications will definitely add power at high and medium engine speeds. You need to be careful when boring the exhaust manifold and the exhaust hole on the cover (in this case, I mean the hole on the side of the manifold, and not on the side of the combustion chamber), because The manufacturer has specially placed a step on the cover on the side of the manifold, which prevents the return of negative wave back into the combustion chamber. You can also modify the throttle valve itself, as for example written in the book “Performance Tuning in Theory and Practice Four Strokes” by A. Graham Bell on page 47 By the way, a good idea complitly to wrap the intake in gold foil, as well as put a heat shielding plate above the exhaust manifold. Usually made from sheet aluminum and secured using the exhaust manifold studs. P.S. good job!
Potentially zero. If it'll flow a little more air though the ecu will compensate with more fuel. Really, the effort probably isn't worth the result, but I enjoyed the process none the less.
Cool to watch this go down ! Did the same shit on my spare reny …. And SP instead of BP because yeah I don’t have an ecu yet and figure I’ll do that on the current engine and remove all the ssv shit and ITB it to piss people off …. But if I could find a way to utilize the ssv and and itb that’d be illness
I bet it would sound pretty mental with ITB. I'm not even sure you'd lose massive power on the top end. You'd definitely lose mid range and low end torque though
So after the oil metering unit the oil is injected into the engine and burnt off is it? If so what feeds it a separate tank I assume bit like a 2 stroke?
The oil pump pulls engine oil from the sump and injects it onto the apex seals as the move around the rotor housing. You can buy a kit to remove the OMP and replace it with a separate tank that's filled with 2 stroke oil.
Love the vid. Does getting rid of the air bags give any problems ? I guess the air bag lights but does it affect the running ie limp mode ? Do you need to code it out ? Thanks
@@TGBuild270 awesome ! In your other vid you said you’d love to get a mot on it at a later date, ob’s it would need lights, but other than a friendly mot guy how would it work with say a decat, no airbags etc ? Would it come under the highly modified category for mots you recon ? I’m stripping my 192 out this weekend lol!
@@lilldicmossy doesn't even need lights. You can get a daylight only mot. Needs indicators and stuff. A cat I could fit and the airbag light I could get mapped out. It could definitely be done
