man those NA four rotors just sound like nothing else

Your channel deserves wayyyy more views and subscribers

@RADPotential

Ай бұрын

Thanks man!!! Share it with your friends!!

First time I see you with 4rotor. You went from hero, blew past legend, straight into celestial territory.

“Hey honey, was that a 787 that just went by?” Said the farmer on the porch

"hear what I've built get used" I PERFECTLY know what you mean. Thought I was mad 😂😂

If the slide requires everything to be mirror smooth to work right, it will have issues sliding right when it starts wearing in. I think it could help to have more clearance and some brass or bronze sliding surface which is kind of self-lubricating. Aluminum sliding or rubbing against aluminum without an oil film is known to experience galling damage

@Randy-lg1qo

Ай бұрын

I would think the opposite - have a matte finish for less binding surface area (dunno though). I don’t think aluminium would be good for a moving part like that regardless due to the heat expansion and softness. Good luck with whatever u end up doing to get it to work

BTU (ball transfer units) with set crews to set clearance of plates would be a great addition for that throttle plate

Some take steroids to get tougher, but balls get smaller. Others get a 4 rotor to get tougher and balls get larger 😂

8:17 this .. either shank your bolts , or plane the flange . As per my comment on your first encounter with this issue

This car is so gnarly. I've got no real experience with rotary cars. So watching this build has been super fun. Also, i'm the guy that stopped in on Friday in Chillicothe to say hi!

Amazing to see this coming together. That sound is unbeatable.

Love your Channel, i cant stop watching your videos

I hate to say itJohnny…. But it might be time to reconsider the butterfly 🦋

@paulclarkson2583

11 күн бұрын

carbon airbox and a single 76mm throttle body?

try rounding all of the sharp edges of the slider and tapering the surface from the intake opening to the outer sliding edge instead of leaving everything exactly flat and square.

I don't think you'd need much warp in the flange to create a bunch more drag in the slider.

I sped through your videos a bit, but if I had to guess, maybe you can adjust the throw of your TB bracket/arm so that you get more control at the lower pedal travel and higher pedal travel is more or less "open" from 80-100%.

Should go for a brass slide with 2 throttle cables one for top and one for bottom of the slide, that way the slide is pulled more evenly. You'll also likely need more lubrication.

Wow! That is so close to perfect as what I would want from sound and exterior look!

Maybe some delrin shims could help seal/lubricate the slide?

oh man the beginning reminds me of an old video clip i used to have on my computer. it was a 787b at a race track, first minute or so the car was out of sight but you could hear it getting closer. so bad ass

Lol what in the F1 car 😂😂 gotta get that thing on track. I'm gonna have to have some words with johnny about that.

brother u gotta do a lil run without the exhaust on lmfao

I think chamfering your side edges away from the rollers ti minimize areas for gunk to get stuck between sliding interfaces would help a little bit. The main issue is that there isn't any sealing to prevent particulates from getting into the moving parts, so you'll inevitably get gunk in there. You also don't have a way to easily add more lubricant, so switching to a thinner oil instead of grease won't work for a long term solution. If it's all aluminum, the steel needle bearings will eventually wear into the softer aluminum surfaces to the point where they won't be bearing anything anymore. Looks great though! All of your current issues will be resolved once you have some more time and design maturity to build off of :)

Hey man, this may be wildly incorrect but Rob Dahm ended up machining the plates to fit injectors in his 26b because of issues with revving/taking off from idle. I don't know if the same would apply to your engine but if you're curious take a look back at some of his videos and he explains it. If that's relevant I hope it helps!

That sound makes the hairs on the back of my neck stand up. In the best possible way. If I ever win the big lottery, I'm also getting a 26B for a daily!

Crazy watching this while I'm waiting for one of Logan's builds!!

@fishingwiththeks

Ай бұрын

What are you getting built?

@harrod19

Ай бұрын

@@fishingwiththeks 85 rx7 12a engine died. Swapping it with a Renesis bc I had one laying around. Converting it to SE suspension as well. Nothing too sexy but I've had the car for 20 years and his dad worked on it back then. Very excited to complete the story

Sound is amazing 😍

Be careful when you change your oil make sure none spills on them beautiful headers 😂

Very famous painting called “The Scream” by Edvard Munch

Let's see the rally videos.

Something I did for reducing the bucking on my semi pp 13b. I made a 2d map on the elite haltech, I believe the axis were mph x map. On the lower speeds and high vacuum I retard the timing at about -25. Definitely a difference for me.

How difficult would it be to switch it to just ITB trumpets?

@sneff1052

Ай бұрын

It's probably worth the pain of switching. The choice to go with a slider is probably on principle and not because it better or easier

Quad squad

I support the rallyyyy its all sick man

Seems like it wouldn't be too costly to just make the inner slider out of Delrin. Should be able to hold up to the heat.

Is the flange on the inlet manifold warped? If so when you bolt the slides down they'll twist and bind up.

I don't think alloy is the right sort of material for the slide throttle, being softer it's going to wear a lot faster and cause more issues later on. Maybe try using and alternative like stainless steel?

Sound like a street bike when you get away from the camera when I put 3” turbo sx exhaust on my Rx8 it sounds so much better just a stock 4 port sound good

I personally feel like 1 oz per gallon is a lil light. I feel like 1.5 is min and 3 oz is max for track days etc

just sick,, man I'd love one of those FD's. I had a built RX7 Turbo II back in the 90's pushing 400hp it was a beast but, of course didn't last lol, just bought a 2009 R3 a few weeks ago has a brand new motor in it but, I already want to pull it out and have a street or bridge ported motor built and put in it.

What's the MPG on the 4 rotor? Obviously you're not gonna be daily driving these things but still curious.

Love your content, id suggest to upgrade your camera, quality is key

Im jealous of your RX7 and love the white color very nice

Being smoky is not uncommon in multi rotor engines which use a stock iron modified to hold a centre bearing. From what I’ve been informed, the modification to the iron means that the inner oil ring slightly passes over the modified area, allowing some oil to get past.

@RADPotential

Ай бұрын

This is great info!!!! Thank youAa

Idk man the yellow rx8 might sound better 😅

Have you though of self lubricating PTFE for the slide throttle? Mcmaster-carr have some carbon filled PTFE Sheet & bar.

Sounds RAD

wow is that only revving to 6k? sounds so low

What kind of power?

Cant you use a throttle that has a cam shape at the cable connect?

I personally would consider an accusump on such an expensive build.

it's definitely deforming under torque, remake the outside in stainless and have the slide DLC coated so you don't have to spend your life polishing. Should fix it real nice.

Personally, I’d ditch that slide throttle. Considering your goal of it being a smooth street driver and not leaning on the engine, the slide throttle is unnecessary and adds nothing but issues. Run a pair of IDA style injection throttle bodies, or even a plenum with a single throttle.