Are we ready to start this 2 stroke V8 engine??? It's close!
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- Опубликовано: 20 ноя 2023
- This week I finished the intake manifold adaptor to run a square bore carb. Next is to bolt the engine on the run stand and fire it up in the horizontal position!!!
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Looking good so far but keep in mind that two strokes don't have a shitload of idle vacuum. So you may have to really richen the pilot jet as it will tend to run lean at idle.
Man this is so cool. I get a little too used to working in a performance oriented shop everyday where the finish aesthetic is so critiqued, its fun watching someone put a functional piece together with "normal" tools. Its my friendly reminder that a million dollars of fun doesn't require a million dollars in tools.
I do wanna give a bit of input though, absolutely no criticizing.. just my opinion.
- If you don't already, grab a hole-saw kit when you can (the milwaukee stuff is pretty solid for the price). You can match the radius of a holesaw bit to the radius of the curved cut you want to make on the inner piece of material (For example, those curved cuts you achieved by drilling holes on the carb plate). It makes life a lot of easier, gives you a spot to get a sawzall blade in, and you won't kill any drillbits if the bit walks into another already drilled hole and binds up.
- 2 Things about that 1/4 plate you used for the carb mouth. 1/4 is a little thin for the requirement of the piece here. I know that may sound stupid, but 1/4 will deflect more than you think across a 4-6in run (between each bolt hole), and might have a little trouble holding gaskets. This is why most turbo flanges are .5 thick (And I'm aware that turbos little in a different environment, but idea stays the same).
Second thing about the carb plate/mount is you probably should DIY deck the surface of it before running it. Putting that kind of heat into the plate will have it all over the place in terms of flatness.
Last thing, and the MOST important. Do NOT buy those cards/plates/sheets of steel/aluminum from any major "Home improvement" store. They absolutely gouge peoples' eyeballs out on those pieces.. Find you a good local steel supplier to source those pieces from. I remember being young, I know its a bit awkward to walk into those places because they don't have the same show-front as lowes, BUT, that piece you bought from Lowes would've probably been sitting in their scrap bin and costed you scrap price. Hell, and you'll learn a good bit from those old guys running the counter.
I can totally agree here @ the "home improvement store" idea. Local-ish to me is a metal scrapyard, who also is the regional metal supplier. Prices are WAY more affordable, and I will NEVER buy basic metals from a "home imrpovement store". I'd prefer to keep my eyeballs in their current location.
Agreed with all of this
Your persistence and what you’re able to accomplish with such minimalistic set of tools is inspiring! Keep on keeping on! From my experience with small (50-125cc) single cylinder two strokes is that when the path after the carb to the cylinder is real long like that is that it gets funky on idle / WOT. However you have not one but 8 cyl with much larger displacement than with what I’ve been working so there is a good chance it will create enough suction even at idle. I guess we’ll find that out in the next video. When you’re making something that no one has made before trial and error is inevitable - even Elon Musk said that about Space X - “failure is a part of development process”. Don’t give up!❤
Yeah elon musk is a moron who got lucky a few times in life starting with rich parents willing to break the law
Go to scrap Yard next time all types of sheet aluminum and steel , big small, etc you will find something that works , they will sell it to you cheap !
we need vastly more 2 stroke stuff in the automotive world, ive been thinking about doing this lol
I'm going to make a quick guess here: next vid on this engine will take at least 4 months, and the engine won't be running.
Not trying to hate at all, I hope you really enjoy doing this kind of budget DIY stuffs. But I see just sooo many issues here.
Sidenote: I've been following a YT-er who tries to make the most powerful 2-stroke engine. (50 cc) He at one time had fuel (and oil) pooling in his crankcase, which caused some severe issues. Considering I don't believe you can get it running like this, you might as well add a "fuel drain plug" into the bottom part of the header. Quick and easy way to check if you've messed up big time. And if you did mess up, really easy to just fix.
Sidenote 2: do some research on 2-stroke and 4-stroke carbs. They are built slightly differently, due to the 2-stroke having oil in the fuel, and thus being less viscous? (can't remember you addressing the addition of 2-stroke oil somewhere else in the system)
If you were only going to feed air the way you made that would be fine. But seeing how you are going to mount a carburetor there, the front cylinders are going to run rich and the rear cylinders are going to run lean.
You should of ran a individual tubes to a plenum where the carburetor would mount. This would more evenly feed fuel to the individual cylinders. Good luck.
I concur, he could have built a set of right-angle runners and reused the OEM carbs.
Complete NONSENSE for at least three reasons.
1. on any other engine, this is a nonsense statement, fuel is atomised by the carb as air passes through the venturi, so the mixture at any constant engine speed will be uniform - the same - what *might* happen, is that some cylinders might get less air flow (due to restrictions, bends, etc) BUT the AFR will be the same. Those that get less air flow will also get less fuel, because air and fuel are mixed at this point.
2. this myth has been around years and ACTUALLY you have gotten it the wrong way around - the theory behind this (myth) is that the fuel droplets have weight and will have a harder time "turning" into the ports nearer the carb as the prefer to travel in a straight line and as such less fuel is available for the front cylinders (leaner) and more for the rear (richer). But this is again nonsense as we know that like fog, mist and clouds, fluids which are heavier than air (water) can be suspended in air and be carried with and by it. Again, there might be additional "ram effect" at the rear cylinders (this is true, a tunnel ram in a drag car does exactly this), it will only result in more of both fuel and air getting to the rear (neither richer nor leaner)
3. (performance) two stroke engines do not just merely "flow", their operation relies on scavenging, meaning there is constant oscillation of positive and negative pressure (pulses) on both the intake and exhaust sides which by careful tuning of the inlet, crankcase and exhaust help "stuff" more air into the crankcase, ultimately making more power. It is not purely about the flow. Ever wondered why a two stroke has a weird exhaust shape with a diameter which varies significantly from one end to the middle to the other end
The last point is why you just can't go and stick a single 4bbl carb on a common plenum manifold in an engine like this and hope it runs with any degree of performance. All of those individual cylinder pulses will be lost/muddled to/by other cylinders which will be at different parts of their cycles. They engineered these outboards with a carb per cylinder for a reason.
@@astrawally8448
Every time I have seen this type of "custom" make it fast make it fit intake, every time the engine is virtually impossible to tune. Maybe he'll get lucky?
But yeah I'm sure that engine was designed with 8 carbs for a reason. If it were me I would try to make adapters to make the carbs mount right side up so I could use the carbs that are meant for that engine. Not sure what kind of oil injection that thing has or if he plans on running mixed? Also not sure how mixed gas/oil would run through a carb designed for fuel only either? But I guess it's either gonna work or it ain't.😁
beautiful work brother make sure it turns off this time!
Find a fab shop in your area and when you need steel just go ask them if you can buy some of their crops, we used to give them away if somebody just needed one square foot of quarter inch steel. What that cost you is fkn ridiculous
Dude what you’ve been doing is awesome I can’t wait to see it in the car I’m watching every video
Find yourself a steel fabrication shop and buy their cutoffs. That piece of steel would probably cost you less Than 10 bucks.
Nothing's 10$ anymore post covid,Bud.
Those days are long gone.
Pretty sure that's not going to work why not just use the stock induction?
because the carbs would be facing down
I don't believe it's going to work either, but my reason is for different reasons, then yours. Yes, the carbraters will be upside down. And therefore they will not work. But my reason is because I believe the antique is way too long. And I believe that it will heat up very fast and it will burn the fuel out before it ever reaches the cylinder therefore will cause a lean condition and will cause the engine to catastrophically blow up. Remember this is a two stroke as well 2 strokes are very Finnicky
i agree@@Brutalford
@@weedsmaker5000 not if he fliped the engine so the throttle bodies are on top it's a 2 stroke it will run just fine pistons pointing down that intake is too long and will not throttle properly impossable to tune
@@Brutalford It would have made way more sense to just make 90 degree extensions. 1 for each carb, and then use stock carbs. Probably not perfect, but WAY more likely to at least run functionally.
Will see if it runs good great job thanks
Thunderhead 289 has a carb cheater management system that would work perfect on there. Tune up your carb like a fuel injection..he give you good advice also. I don't know the price but talk to him. Good luck.
Hope you stick it in a super light little t bucket or something like that. I know you're a Ford guy so🤷 I always wanted to put a V6 one sideways in a bike with a Harley transmission, so I could still have a manual, but don't have to worry about thrust loads. Plus, it would be completely nuts. There's a dude down in like Australia or New Zealand who did a V6 2 stroke outboard powered bike and it's insane!
I truly hope this works. Man oh man I seriously have my doubts and have been in the field longer than u been alive. Next episode should be quite interesting
ahh man you are rollin with the WEN drill press like me haha we gotta blow this channel up so you can upgrade and not be on par with the plebeians watching you 😆
Hey ill give you a quick tip someone gave me along time ago on how to mark an angle perfectly.. you can fill a bucket with water and sink your part down to where you want your cut then spray paint on the water and you will get your straight line and it works on anything perfectly. Hope this helps in the future
Just my 2c mate....i don't see this being a problem for initial start/idle, more so mid to high rpm/heavy load. By splitting the intake manifold (I know you had to make a compromise due to fitment) the relative small plenum volume of each bank could cause a FAT to LEAN condition running from closest 2 cylinders to carb, to the furthest. To negate this, a balance pipe (crossover pipe) connecting both sides of the manifolds, fitted at the rear will help with cylinder to cylinder fuel/air distribution....That being said, keep up the great work mate, much respect 🇦🇺
I sure hope you are planning on pressure testing that
Will the 2 rear cylinders get the same fueling with the intake that long? Love this whole experiment, subbed to follow this thing along. From Australia 🇦🇺👍
Nailed it
How will the fuel mixture affect the float bowl needle and just sitting mixed fuel inside the float bowl?
Yea... efi WORKS... but only when you meet the right criteria
I'm working on a 2 stroke yamaha 200 v6.
Been stumped for a while figuring out the clutch and flywheel.
Just can't bring myself to put an automatic behind it.
Any ideas appreciated.
I think stock setup on the motor with 8 carbs would have ran whatever if you got creative with the out drive. Im not bashing just trying to help maybe full circle the build for you.
I'm just wondering... Considering the next-level sketch of the seller of the engine... Have you ever tryed to do a compression check? Is the engine even good to begin with?
dont go to a home improvement store for metal lol. I paid $36 for a 48"x8" .250" plate of mild steel at a local metal supply shop.
You know if you would have drawn that in the center of that piece of steel that twelve by twelve, you could have literally folded over the sides all four corners and made a intake riser and still had your spacer
How much did you get the engine for?
Thats not going to feed gas into it right hot pistons
get rid of the accelerator pump because two strokes have good pulse flow and twice the power strokes you won’t need it and it will make it run like shit when you blip the throttle
But that will be a moot point as running all 8 cylinders into a common plenum will all but destroy the scavenging on the inlet (and probably destroy the exhaust tuning as well).
@@astrawally8448 what your saying is the layout and stuff is way out of wack and it won’t perform as it could. But that said if on top of that you run the accelerator pump its not good there’s a reason no factory two stroke engine in this world used accelerator pump carburetors they don’t require one because there isn’t any pause in power stroke that contributes to unsmooth fuel delivery there isn’t any blowback in the carb between power strokes because or the reeds (or rotary valve) in some cases
Did you consider using a pair of Harley CV carbs?
Not with a 2-stroke. CV carbs won't work on them.
@@BillyWillicker OK fair enough, what about Hilborn mechanical fuel injection?
@@2000freefuel Maybe on an application that is not using a proper tuned pipe.
Fixed needle slide carbs work best on 2-stroke engines, especially with tuned pipes. They are a proven, well developed setup for them. Adapting 4-stroke fueling systems rarely works on 2-stroke engines, if ever at all.
Please please please make a short they are rediculous at attracting interested people 😅
Use plasma,mate
Have Fort Knox swopped all there Gold out for Steel bro ? As it seems its more expensive than Gold out there 😲😲😂😂🤘🤘
Why didn't you just go to a steel factory...there are several here in florida
that might run for like 5 min then all the fuel will pool at the bottom. You really should have just gone with fuel injection
Like all 2 strokes just "Italian tune up" it all the time and it'll be fine. 👌😂
Did mention this in my own reply. I also made the suggestion to just add a fuel drain plug to this thing, considering it's going to be the lowest point of the engine too. (less likely that the crankcase will get pooling issues) And much more easy to drain/trouble shoot, vs having to take the manifold off, or turn the engine upside-down/whatever.
Never go to home Depot for steel
Gonna weld up Deez nutz😂😂😂😂
200 dollar plasma and you'd be done cutting that in 5 mins.
What I think, well I think your wasting your time and money trying to get that hunk of shit to power a car. I do appreciate the effort but I think doing build on your classic mustang would get you far more views.
Melkus RS 1000 look it up
@@benterry6463 two stroke with 3 cylinders and 3 carbs - not coincidence. This is why a single 4bbl on a common plenum manifold won't work.