I built a similar unequal length exhaust for my suzuki sv650 so that the exhaust would exit under the seat. I did back to back runs on the same dyno With the unequal exhaust and my oem exhaust That was cut and fitted with An aftermarket muffler. The result was a nine horsepower loss using the unequal length exhaust . The exhaust looks neat, but definitely produced horrible results
@@AverageJoesracingteamYeah, actual Subaru tuners are well aware how inefficient UELHs are, which is why equal length options are out there, but plenty of people prefer the burble and can live with leaving some power on the table.
Jimbo, please think of using a snowmobile torque converter instead of the stock one. You're not running much power through it, but the vehicle weights noticably more than what it was technically designed for so it might slip without you even noticing. The guys from carsandcameras were using a stock torque converter in their small dragster build with an uprated V-twin like yours & they were losing noticable amounts of power & acceleration despite their build weighing nowhere near as much as the Renault
We are using a Comet 44 series clutch system and its rated for 18HP. we are aware of its limitations and do plan on upgrading it to a Comet 700 series at some point.
HEY JIMBO! I have watched your channel for a long time but do not typically comment on videos. Anyway, me and a friend of mine did a full street legal build on a small UTV/SXS that is 300cc. The engine is based off of a Yamaha motorcycle engine with a CVT. It was loud and would not pass auto inspection. So what we did is replace the muffler with a newer but quieter version. Then we had an exhaust shop weld an exhaust flange to the end of the motorcycle muffler, then had the exhaust shop make some custom pipe from the new flange to a car muffler and also did some mods to hang the car muffler. We went with a Walker quiet flow. I think we paid like $35 for it. Anyway, this setup is basically using a stock motorcycle muffler as a resonator then a car muffler for the rest. It is very quiet now and you can't even hear it idle 100 feet away. It is not as loud on the street either and we can now play the radio. Just a thought for your setup for the muffler. May not be what you are looking to do but I am sure gave you some ideas. Love the videos. Thanks!
Thanks! We have already picked a glass pack muffler that provides a mellow sound without restricting the exhaust. It may not be as quiet as a Cadillac, but it should be good enough for rural Kansas. This will of course be in the next video.
Listening to the engine as you accelerated got me to thinking. A cheap way to shave a bit more time off of the old 0 to 55 would be to get a tuning kit for the torque converter.
She’s a bit spicy now, or at least it sounds the part. I’d be interested in seeing a tach on the engine and on the trans input shaft, with maybe some wizardry that displays realtime RPM differential. To get an idea on where the CVT is in its operation. Also, possibly already suggested or mentioned, but that carb tuner thing that Thunderhead may be a good candidate for testing on this setup (or vise-versa?). Top notch video! I hope you’re enjoying making them as much as we love to watch them. Cheers!
For any incidental sharp things that get into ya from wrapping headers or any sort of fibers like fiberglass, a pair of brand new pantyhose works best, polyester will do similar but not as well, use pantyhose as a washcloth in a nice hot shower. Low pressure against the skin with lots of soap lather, and it pulls a majority out first go. It's a mad good way to take care of it when doing insulation or anything where you end up with small painful fibers in your skin. Hope this helps at least one person lol
You can purchase sheets of gasket material.. I use Felpro gasket material for situation as you have.. simply put a little grease on the parts surface lay on paper and imprint cut it out. You can use the bolts for punch against a board. If you look at a bolt the end is made just for this it will cut the gasket material...😎 8 N Ford tractor muffler would work... I use to use them on Onan generator for Motorcoach.
u can also hold it in place and knock around the edges with a soft-ish blunt tool like the handle of a screwdriver. tap it enough and u'll actually cut it clean. learned that from an old lazy mechanic :D
You've done forced induction, so might be fun to see how compression and head work effect things. I've welded up both 212 and 420 heads (up to 12:1 or so range), and it made a big increase in power, and I believe fuel consumption. Cost me some time and welding supplies. I'd grab a spare set of heads to mess with as you do other things, though, in case you get a whoopsie like I did once. Don't drink and weld, kids.
That CVT unit doesn't sound like it's really getting to the top of it's range (1:1-ish) until the engine is way up in it's RPM range. Maybe some looser springs in the driven unit and the gears in the transmission would be more useful? Right now it's like "pick a gear, any gear."
I think a good stage two kit would be very deserving of being put into that engine. A stage 3 would be even better and those 670cc engines have a massive after market community.
Finally my favourite channel uploaded new video, so i can use free time on very important thinks ❤❤ AND actually, you dont need to dissasemble the engine, you can just bypas the guvernor by eliminating the springs and just putting backspring so it would not stayed open, I was really thinking about how to bypas the slow throtle responce, but keep the rev limiter for my cheapo 200cc china engine, and i came up with solution, that i will stick a lever directly in front of the guvernor that will push it only to the half and stop, use spring , that it will stretch the sping after the lever would bottom out somewhere around half or more throtle, and merge the original throtle with the directly pushing carburator half limited throttle after the spring part, so it would react instantly to about half (or more, it just need to be less than the position when the guvernot keeps the revs low) and still be limiter on max revs.
It seems like this project is making far quicker progress than any of the others. I love your statement of "finding some new problems". That's excatly how all projects work!
I felt the car was performing better as soon as you got it on the road. It seems this baby could really move (relatively speaking). Can't wait for the next episode. Keep up the good work Jumbo.
The way you fix the gasket deal is you glue gasket material onto the gasket surface with Gaskacinch, then trim off the excess with an exacto-knife. Another matter: you might wish a larger oil cooler, with a scoop to direct air over it at speed.
The way is sounds is just amazing! If you're interested in speed parts for the 670 you should check out performance 670, they have billet rods, cams, valve springs, and other kind of parts to hop these engines up
Sounds like you need a carburetor with an accelerator pump in it. Maybe a Rochester 2GC, Carter BBD, Weber 32/38 or 38/38? Or, being those are made for much larger displacement engines (318s, 350s and such), maybe a 1 barrel car carb? Dayton Carburetor makes a 1 barrel with an adjustable main jet in it. It's based on the Holley 1920.
I have a Kawasaki Brute Force 750, the guy I bought it from changed the factory exhaust to a KMF straight pipe type muffler, and it bike is incredibly loud, so much so, I didn't think I'd be able to use to go hunting. So, I took a stroll to the junkyard, and found a factory Stainless muffler on a 1990 Mitsubishi pickup, with a little welding of a flange, and a hanger. The muffler inserts into the KMF muffler, and shaves a large amount of noise off the bike that makes it very suitable for being in the woods, and after taking some full throttle rips, doesn't hurt the top end too much(At least the highest I'm willing to feel the top end, doing 60mph on some 29.5" High Lifters is the limits of my bravery.). The muffler is also plug and play, I can pull if off and be loud for some mudrides, and throw the extra muffler on, and you hear the engine noise just as loud as the puffs from the back. I say all that, as a suggestion, to find a large style 4-cyl exhaust, to not hurt the power of the engine, and still get a factory/OEM sound. Bonus points for old school flapper cutout.
Even with the obnoxiously loud exhaust, it'll never sound like a Harley. That is because the Predator engine is a 90 degree V-twin, and the Harley is a 45 degree engine, with a weird firing timing. It should sound more like a Moto Guzzi instead.
I might need one of these engines for my already CVT-transmissioned DAF 31, it might actually make it faster than stock! Also could help with the whole expensive parts thing.
I had to google DAF 31... Hmmm... a nice looking little car. I reckon updating the engine to something more modern might make the car more practical and cheaper to maintain.
get some gasket sheets and make one, it's usually done in 15 minutes once you get the hang of it, squeeze the gasket-paper against the surface you wanna match and the contours will show you where to cut... i haven't bought gaskets in years, i only make them from sheets.
In a pinch a cereal box will frequently work as gasket material, especially if gasket thickness isn't going to have an effect on other tolerances. That cover looked like one side of a cereal box would have been the perfect size to cut a gasket from.
DAAAAHAHAHAHAAAM THAT'S LOUD! Bet your neighbours LOVE YOU! 🤔🤣🤣 Good idea for bolt on a 'slip on' end can from 600cc Motorcycle, some also have a quick removable baffle. It'd give a nice deeper note too 🤔😉 😎🇬🇧
I think a supertrapp muffler would be good- it's compact and gives you the ability to tune it with different plates. Used to be popular on old air cooled VWs. Your current rig sounds a lot like my friend's Super Beetle from highschool. And it's about as fast. Lol. Just needs some Black Sabbath playing through the Pioneer 6x9s and some burning parsley.
When you brought up why you don't use a thrust-type clutch like in a regular automotive drivetrain, I'm reminded that for some reason nobody makes stand-alone clutch setups. I would be willing to pay money for a stand-alone automotive type clutch that could have a pulley and/or gear on one end and the same on the other.
International Beer and Pizza Day is on October 9, and there’s no better day to throw a pizza and beer party. When you think of pizza, you most likely think of Italy, but did you know that the first pizza was made by the Greeks and Egyptians, not the Italians? Pepperoni may be the most popular pizza topping in the world but in ancient times, the Greeks and Egyptians coated their flat-bread pizza in olive oil and spices. History of International Beer and Pizza Day If you’re familiar with some of the world’s best food pairings then, chances are, you’ve had a glass of beer with a slice of pizza. It’s no surprise that one of the world’s best combinations originates from the same class of food, cereal grains. Beer is one of the oldest drinks produced by mankind. It’s brewed from cereal grains, which contain starch sugars that produce ethanol and carbonation during the fermentation process. Beer consumption dates as far back as 5000 B.C. in Iran and was recorded in history books of ancient Egypt and Mesopotamia before spreading around the world. In the Middle Ages, the brewing process of beer was a craft passed down as a family-oriented activity. By the end of this period, the production of beer moved from a small-scale domestic industry to a large-scale export industry. The Industrial Revolution introduced a more controlled and mechanized process for brewing beer as technology developed in countries like Britain and Germany. Pizza dough is derived from cereal grains as well, which are ground up together to make flour. The origin of pizza can be traced to ancient Egyptians, Romans, and Greeks. However, the modern birthplace of pizza is a Greek settlement in Italy founded in 600 B.C. Back then, pizza was an inexpensive food that could be consumed quickly; a favorite of the working poor in the ancient city. Pizza was introduced in other parts of the world as immigrants spread to Europe and the United States. Pizza and beer pair so well because they enhance or contrast each other’s flavors. This is possibly what inspired Nick Saulino in 2016 when he marked the first celebration of International Pizza and Beer Day. Since then, more people have embraced the idea of pizza and beer as a great food combination.
Man I got really sad last week when I didn’t see an upload. But this episode really made up for it!! Keep killing it sir, you’re about to be RU-vid famous!
Cereals packets make great gaskets. Years (and years) ago me and my mates would make our own gaskets from Cornflakes boxes, because they were free and often better than factory items. You can make hole punches from odd bits of tubing and taper the ends with a file or stone. You can also buy that fibre gasket by the sheet. It's pretty cheap and it will come in handy one day, trust me.
Nice! I love the v-twin sound! It would be cool to catch a wrecked motorcycle with a 4 cylinder to hook up to the CVT. Run a french car with a Ninja engine!
Love the videos. Can’t wait for the next video. Got a whole nother week. Good thing I work every day all day. Hahah thanks for the videos makes me wanna do this stuff. Keep it up.
Thank you for appreciating the suggestion of a Y pipe header I gave you! It's best for a V twin engine naturally asperated, but you won't need a full header if you turbo charge the engine with a Mukuni 45m.m. (option) carburator. Just V pipe the exhaust into a turbo and exit a single exhaust out the back of the car. You're doing great! Oh, remove the govenor and add an adjustable excelerator stop under gas pedal in the car. Runs better!
If you want more power, and if I were you, I'd get in touch with performance 670. In combination with what people are saying regarding a snowmobile torque converter from cars and cameras, they're pushing a 670 to 50-plus horsepower (before they turbo-methonal'd it, which I believe they're rocking almost 70 horses).
Perhaps, at this point, it would be wisest to fabricate an adapter mount to the intake manifold for a carburetor with an accelerator pump... such as a Holley 350-cfm or 5200-series progressive 2-barrel.
This. A progressive linkage Holy Weber would be ideal. They were stock on Vegas and Pintos but I'm almost positive the Fiat 850 Spyder my wife had had one and it was only an 850cc motor.
@@johndoe-om6yl Yes, I agree... as my Chevette also had one. (Listed as the Holley "5200" series) Even a Carter BBD would suffice, and perhaps be a better fit because of it's smaller flange/throttle-body area. But then, I think even adapting a Rochester Model 500 1-bbl TBI unit would certainly be the way to go, given that it's closed-loop operation is no different than that of any EFI system the OP has dallied with before, and how he's already installed an EGOS (Exhaust Gas Oxygen Sensor) the output of which is relatively easy to adapt to any rudimentary GM/Bosch management system... such as the one found on my '85 Chevette w/feedback loop Holley "5200".
True... its half the power of the original engine but its still fun to drive. So here is some insider info... we found a great muffler for the car and it sound awesome now. It will be in the next video.
I machined the geo tracker flywheel and bolted to the 28hp yanmar flywheel. Now to order some clutch parts so I can fit the transmission. I neds to make some videos. I think I have 21k subscribers.
He has thoughtfully fitted it with safety features. Nobody steps out in front without hearing it coming. What could be more neighbourly than that sort of consideration
I'm very surprised you aren't the type of person to have big rolls of gasket paper around to make your own gaskets at any given moment, hahaha. Also coulda gone with RTV of course. Holy crap this thing is loud and sounds ridiculous now. Loving the videos as always.
You will never duplicate the sound of a Harley Davidson. I think Harley Davidson might have a patent for the sound that they make. The sound Harley's make is cuz the engine block with the cylinders being at 45° which makes the firing the second cylinder fire 315° later. So no other bike will sound exactly like a Harley. But if you could get a custom ground camshaft and had another tiny lobe on the exhaust, at the right degree, used like a compression release, like on a Tecumseh 3hp, it would sound a little bit more like a Harley at idle.
If you want suggestion of a good muffler to use with a 670-cc V-twin implement engine, look at Red Beard Garage videos, as they swapped the same model engine into a UTV and used a model of smal-engine/off-road muffler that gives it a nice "note".
I think that when you are done with this car, you could auction it off to your subscribers. That would be cool, and the little rat wagon could live on!
This is great, the engine can breathe much better for that possible intake venturi diameter upgrade. I know the stock carb will at least need slightly larger jetting to keep up with the greater airflow
Years ago I had a Subaru Justy with a 1.3 liter 3 cylinder engine, and the best muffler I could find was for a garden tractor, which I got at Tractor Supply.
Coffe and Cantina to start the day, why thank you, I believe I will! Sundays have got to be my favorite day for the plethora of people i follow, sundays are some of the best.
This is the stuff we should be doing in America; the ingenuity is awesome gentleman (and any ladies putting up with this debauchery) keep up the awesome videos. I am sure they are inspiring some kid somewhere to use his tools and his mind to make something special. To push the envelope and not accept the status quo.
