Will it Run? Lawn Mower Carb VS Ford 302! (ThunderHead289)

choke's on oh my god it's gonna work [Music] [Music] wow is howdy my friends and welcome to the channel today i'm luke thunderhead289 here on youtube in this video we're going to be doing something way off the beaten path and so it's been cold rainy outside snowing haven't been able to do a lot but warm weather is on the near horizon and so i've been kind of fooling around and just doing something a little bit different i've always wanted to try and put a lawnmower carburetor on a v8 engine with gas prices being ridiculous today i want to see if this could be actually practical and even possible so i found the smallest lawn mower carburetor i could find that was still a float bowl style so you know it could work with a typical v8 four barrel style fuel system and we're just gonna see how it does i got the chevy adapter here i made just you know going for full on absurdity now a ford has the distributor in the front and i mostly run ford so i made this bad boy to clear the distributor on one of those units but um i don't know you know i've just kind of done this for self entertainment and so far i've been pretty successful in that endeavor but um stay tuned we're gonna see how this thing runs if it runs you know on paper really this shouldn't work but uh you know i'm gonna pull out all the tuning stops all my little tricks and tips in my tuning tool box to see if we can get this thing to go and we'll just we'll just see what happens god this is the stupidest thing i've ever tried to do i am super entertained to see if this is going to work out so just run through some of the parts and pieces i designed for this project here most of it you know being done at 2am where i got to go to work at 6 00 am in the morning but that's just kind of how i do things but i would encourage folks to you know if you want to do any engineering stuff or whatever to get into doing cad we just live in a world where all this stuff is so easily accessible the one thing i would say is you know just use something that's used in industry there's a lot of free software's out there but i designed this stuff in fusion 360 and you know that's an autodesk product which is pretty popular in manufacturing so you know it just pays dividends to know now we move over here to the 3d software and i can't take full credit jonathan at quick covers oam taught me a lot of stuff when i worked with him there and it's pretty good software here where you can go through and make a lot of process control edits you know you can make a lot of mistakes if you don't know what you're doing but you do have full control so you can do crazy things like this and get away with it on a machine you otherwise shouldn't be able to do that but these are just a couple things that are worth getting into and learning how to do now if you follow my channel for a while you know that emily and i came from the trailer park and these are just some of the skills and abilities that allowed us to you know get out of that scenario and move on down the road of life and do some of the things that we've always wanted to do all right all right let's take a look at this 3d printer it's hanging in here i've kind of taken over the engine lab with the thing you know most folks they'd probably want to work on something like this and i'm real close to having the supercharged galaxy done with the tko and whatever just yesterday i did the wires they're cut to length units and you know you're just not a legit hot rodder if you don't do it that way but you know i've done this stuff like a thousand times over it's just not super interesting to me at this point that's kind of how we get into projects like this so like i said we've taken over the engine lab that's a 393 stroker sitting there a 351 windsor that's straight from the machine shop but you know once again and this is how we're spending our time instead of doing that but this is pretty wild this is the biggest thing i've ever tried to print on this little tiny printer we're at 92 percent and we're on the 30th hour now i've had to pull out all the stops to do this thing the first time i tried to print it it's so big and we're getting so far away from the heated bed that started to warp and so i broke out this space heater and it is legitimately 110 degrees in this room right now but it's holding up good no warpage and we're getting there we're super close i'm printing this in p e t g or pet g whatever you want to call it and i've done this stuff before where i've made different adapters and things and it holds up really well to fuel preferably i'd use petg carbon which is right here it's even more rigid i guess and if this looks like a remote idle air control valve you'd be correct because that is in fact what it is that's normally the size of things i print on here but this is definitely a mac daddy it is almost done it's got a little tiny nozzle tip on it so the resolution is just so good but not that it matters but i don't know you know just for the fun of it i guess but we are almost there we're getting to the point where we can test this thing out this is definitely one of those don't try this at home moments i'm by no means a 3d printer wizard but like a lot of things i know enough to be pretty darn dangerous and what i have to do to kind of make things work so uh yeah definitely don't run a space heater in a little enclosed room i'm going to get the heck out of here it's like i said it's 110 degrees and in highway here i'm used to like 10 degree weather which we have just on the other side of the window there and there she is done how long did this sucker end up taking one day 9 hours and 18 minutes finally shut everything down so it's not 110 degrees in here turned out with some pretty good resolution i don't see any notable errors in it so that's definitely the longest print i've ever tried to do and i hope i never have to do it again but we got a good part we'll break all of our support material off she'll be good oh look at the poor little guy smoke the extruder motor at the very end of the 34 hour print apparently because it got done but when i tried to run it again that was all she wrote but luckily a replacement is only 16 bucks so she'll be down for another round here in about 15 minutes and we can finish this bad boy off [Music] just go to sleep little buddy it's all over now [Music] you did good just very good [Music] is [Music] strange [Music] i'll take this [Music] all right so it's 1 0 45 p.m in the afternoon march 19th the following day it's nice and sunny out so now let's check out what this gasoline did to this tupperware deal really gave it a rough time trying to do this one hand maybe i'll move that out of the way there we go so the tupperware had kind of a rough time with the gasoline as you can see the pet g is just like when i put it in there it's not all flimsy good and stout not melted not warped so you know which i knew that'd be the case but i figured i better prove it to you guys come on hands man that stuff really stings that must be like 90 million options all right so i'm about to install this thing and i want to go over some preliminary theories of how i think this would work if it does work so the biggest thing obviously this is notably smaller than a four barrel it's like restrictor plate racing on top of restrictor plate racing but you know at first i thought it's going to be way lean but the thing is really going to be limited on airflow by the carburetor itself so if i can just match the jetting which these are needle jets where basically it has a jet orifice and then there's a needle that goes into that orifice and as you uh pull it out i guess that orifice essentially gets larger and so it's real easy to add or pull fueling on this carburetor and that's why i picked this one for that so that's kind of the first thing the next thing is i think it's going to probably want a ton of ignition timing now if you don't follow my channel and haven't heard me rant about ignition timing i mean all things equal the the biggest thing with timing is less cylinder pressure is going to ask for more timing because the particles are farther apart it takes longer for those particles to all ignite and propagate across the cylinder and burn that's why you know when you get into boost with supercharged cars you pull timing for boost and that's why low compression engines run a lot more timing now this thing i guarantee it's going to be making vacuum at like wide open throttle you know it's just not going to volumetrically fill the cylinders that well so it won't necessarily be a lean mixture but it'll be a less dense cylinder charge that's going to ask for a lot of ignition timing in order to burn that cylinder charge at the right time in the stroke for it to be able to run so i'm going to hook it up to manifold vacuum and probably if this thing stays above 12 inches of mercury it's always going to be pulling advance from vacuum advance you know as you open the throttle on any carburetor you know your throttle kind of works like a restriction to your engine which is a glorified air pump with a sparkler in it you know as you open that throttle you're allowing more and more air in and your cylinder pressure is increasing and when you get into the throttle really hard your cylinder pressure goes up and that's why vacuum advance drops out because we don't need that much timing to burn the mixture at the right time so i think that methodology is going to apply to this thing my final concern is that you know the needle and seat assembly was probably for like a gravity feed that probably is for a gravity feed and so that's going to be interesting with five to 10 psi on the thing no accelerator pump but you know there's been carbs throughout the years like a 240 inline six f-100 it also the carter carb on that thing doesn't have an accelerator pump so you just flip the choke crank it over it fires and you open the choke and it's it's running so that'll probably apply here as well so anyway with that i might as well fire up the maverick for potentially the last time in case this destroys the engine completely such a good running car you know just seems like the wrong thing to do to it especially when it's been so good to me or not what a minty unit i have this handy dandy ball valve in here because this is the engine the car i use to test out rebuilds on other folks carbs when i get done oftentimes just to make sure that everything's clean and working the way it should so with that closed the engine's going to run and just run the fuel out of the bowls then you know we're not dealing with a bunch of stuff and we're trying to put this guy on and i know you're loving that chain in there this engine rips around so bad in here because actually it doesn't have a torque box like at all so the car twists so bad and it's got a z bar with that four speed it'll like jam up the linkage at hard throttle sometimes so that was the very simple solution and let's be honest that fits with the whole aesthetic of the car anyway so that was a no-brainer there she goes all right we're going to leave that valve closed if you're doing this tomfoolery i want to make sure you shut your key off you definitely don't want to replicate the heater that i used in this car over the winter the old coleman stove you know somehow i didn't barbecue myself always a good thing shooting away over there all right off she comes a little pro tip if you do what i do where you put a lot of different carburetors on to test different folks things or you take your carburetor on an awful lot because i don't know you have like a carburetor fetish or something if you do take bearing grease and rub down your gaskets beforehand see how that didn't rip whatsoever when i took this off and it sat all winter you know that's a little trick and then your gaskets are essentially reusable and a side note if you've ever struggled with not having enough common vacuum ports like you know where it's not plumbed from one cylinder or biasing to anything these trans-dab carb spacers are super nice so i'll leave the link below to these but i use these a lot and you know they're good insulative to keep the heat off the carb and you have a nice extra manifold vacuum port all right for preliminary testing here i think i'm going to opt to not run the air filters now naturally the carb studs are too long so i got some of these nice patented carb stud nut spacers here and you know what i probably want to use washers on here just in case to distribute the load so i tell you what i'm going to do i'm going to give it a lot of throttle right in the beginning so our mixture screws for low and high speed are pretty far out so it should be rich you know all right so in theory it's all bolted on very liberal application of the term bolted on but it's on there and uh no time like the present the moment i've all been waiting for i'm almost afraid to do it here we go oh my god it's trying to idle [Laughter] okay all right so it is so dumb it almost sounds like it has a chance or it could be wishful thinking or fuel just from the intake from the other carburetor that i just took off but uh it's kind of hard to run the throttle from the inside because there's no throttle cable at the moment so what i think i'm going to do is i'm going to actually have to try we're not going to do the shaky hand 1000 like i'm doing right now we're going to get the tripod and i'm going to just jump the starter and try and work the throttle and see what happens we have our under hood key and then we just flip the choke in theory you know i have these pretty far out but not all the way out so it's not just like run away rich if it could be rich but we'll just listen and smell and see what we have and adjust as we need okay chokes on oh my god it's gonna work [Music] foreign so before we get to buck wild with this thing since i know this carburetor was normally like a gravity feed or one of those case pulse pump things whatever you lawnmower people folk know what i'm talking about now i'm pretty sure this pump i haven't had a gauge on it for a while but if i remember right it's around 8 psi so something tells me i'm gonna have to regulate this down so i got a little pressure buoy here for pressurizing cooling systems to check for leaks or blown head gaskets they're really nice tuning tool for different things or a test tool rather i'm just going to pump it up here slowly but surely so that's almost 5 psi that's more than i thought okay so technically the needle and seat is holding 5 psi and that's about it you can see as i try and add more it bleeds back down so that means i should probably put a regulator on here and get somewhere below 5 psi if i want this to work out all right so i've done a few things you saw the test where i pressurized the fuel ball to see what psi would hold now this pump's putting out like 8 psi that was way too much so i got a regulator sitting down there but i just thought well we could just use the ball valve to restrict flow so now we're sitting just below 3 psi and then i also took the flow bowl off and then i bent the float itself down and i'll explain that in a little bit here why that made such a difference all right there she is running you can see our real time afr our vacuum 20 inches of mercury pedaling around 13 or so i have idle adjustment off we're not doing any live edits or a fuel circuit it doesn't do too bad [Applause] it's almost annoying how well it runs idling at about 700 rpm or so it's just some classic thunderhead 289 action y'all just had to say i couldn't do it so here we are [Music] set up on the cam give it a few revs sounds like it's a lot quieter than it normally is which is to be expected arguably runs so good at least idling and revving up and down that if i didn't tell you there was a lawnmower carbon there you'd have no idea that even like exceeded my expectations not bad all right my friends i think that proved the point that it will run and it will rev so now i think i want to get to this point first before i design the throttle bracket as you see the throttle on this thing moves side to side and a typical you know throttle linkage in a car moves back and forth so i got to do something to figure that out but you know i just want to make sure it ran first and after you know a little bit of thunderhead 289 tuning action it turned out pretty good i'm you know i actually did better than i even thought it really could now the biggest thing i had to do to get this to work and you saw earlier on the video i was checking the pressure to the car what it could hold and we saw that it held around 5 psi but you know so i had to regulate below that but there's also another step to this process normally this sees really low pressure if not like probably gravity fed and so there's a relationship between your fuel pressure and where your fuel level is going to sit in the bowl and that's based on basically your float height adjustment and so i guess to put in simple terms think of a boat okay the more you load on a boat the lower it's going to sink in the water now we have the same thing going on with the float where pressure is pushing on the needle and the fuel the buoyancy of the float and the fuel is pushing back on it so you know in a boat when you load more on it displaces the water as it sits lower well in a carburetor you know it does the same thing but the water or the fuel rather doesn't have anywhere to go so what it's going to do with more pressure is rays in the float bowl now there's a direct relationship between the fuel level and the low pressure area it takes to draw that fuel out of the float bowl so to simplify it the higher the fuel level the sooner it's going to come in with that venturi vacuum and the lower the fuel level the later it's going to come in you know we do this with hollies and i've gone over this before it's very important to a carburetor so after doing that you know then i had pretty good mixture control on everything and honestly you know for a lawnmower carb it was pretty lights out on the v8 at least for something that could run and rev and you know a pretty good reason to believe that i can actually drive this thing it's not going to have a lot of power but i almost guarantee it i can puts it down the road and go up hills and we're going to try and take it on the interstate so stay tuned for our next video i hope you learned something along the way you know went through a lot of really weird and different things all over the board um you know did this for self-entertainment and definitely succeeded in that endeavor is [Music] you

Channel: ThunderHead289

Views: 991,492

Keywords: vice grip garage, junkyard digs, deboss garage, VGG, will it run, car revival, derek vice grip garage

Id: gmPtCmL-Ldw

Length: 26min 5sec (1565 seconds)

Published: Thu Mar 24 2022