Modified Camshafts for Briggs experimental engines

[allenbrowning]

omg run away from this guy

[ChargerMiles007]

@allenbrowning

HaHaHa :)

I know they look rough, but they work for my purposes :)

[michaels6speed]

seriously? This video is serious? no F'n way.... it looks like you machined it on a bench grinder.. lol

[ChargerMiles007]

@michaels6speed

Yes, I did machine it on a bench grinder! :)

You must understand though, that the engines I use these cams in don't generally run very long. so they are fine for that purpose. Other than filing and sanding the lobes, I have no other way of smoothing the surface.

[Dirtpros]

nice weldings..lol alot of holes in it...

[30GB]

can i weld some more metal on the flat tip of the lobe? (stock cam) and will it increase performance? or hit the top of the head?

[ChargerMiles007]

@30GB

You would have to check out the engine. I use modeling clay, put a small piece on top of the valve, and crank the engine over slowly, it will squeeze it to show you the existing clearance. Of course you might be in for a new head gasket, but the is the price you pay to modify things.

[nicholas5674]

does those work?

[ChargerMiles007]

@nicholas5674

Yes, all of the camshafts shown have been used in various engines I have built.

[formulasonny]

@ChargerMiles007 sir, it works ba talaga pag ginalaw mo ang camshafts?

[ChargerMiles007]

@formulasonny

Sorry, I think you went into a language other than English there. :)

[curtknows101]

@ChargerMiles007 Lmaoff lmaoff!!!!!!

[formulasonny]

@ChargerMiles007 sorry, you don't understand my inquiry, i just want to know if you modified the camshaft it make additional rpm? and power of engine?

[ChargerMiles007]

@formulasonny

Not really, I could do that, these cams are for special applications, like turning a 4 stroke engine into a 2 stroke, or an air compressor, or even a compressed air powered motor. Generally it would be much easier to just build up the lobes a bit to make more power, of course the surface finish would be more important then.

[formulasonny]

@ChargerMiles007 thank you very much, do you have idea how to modified the vanguar 13hp single piston engine? to make add rpm and power? thank you

[ChargerMiles007]

@formulasonny

Sorry, I don't know anything about the Vanguard engines.

However, generally to modify the camshaft (assuming it is made of cast iron or steel) You would first need to look at the valve geometry, to make sure the engine can tolerate more valve lift, without hitting the piston. Then note the existing camshaft duration and lift, and weld on more to achieve what you want. Getting a smooth camshaft will be the hard part, lots of filing and sanding, and trial and error! :)

[makypunk021]

dude? what cam gear in you video more performance speed?

[ChargerMiles007]

@makypunk021

You could make a cam for more power at higher rpm, all these cams are for special applications in engines that I have built.

[makypunk021]

@ChargerMiles007 ah..ok ok/..am using the standard cam gear of GX390 engine//and 90mm piston flat.its that ok my modified?

[ChargerMiles007]

@makypunk021

Sorry, you lost me there. What engine are you working on?

[makypunk021]

@ChargerMiles007 try to see in my channel..i have there my Gx390 engine.video

[ChargerMiles007]

@makypunk021

Yes, I watched a couple of your vids. Impressive.

So you use the engine for boat racing I guess.

I don't see why welding up a camshaft to get longer valve opening duration couldn't work in that engine. I can't say for sure how long the camshaft would last, but so far mine seem to hold up OK.

Best of luck in the racing1 :)

[makypunk021]

@ChargerMiles007 hehe//thx..i make also. big intake valve....i have project now modified Gx390//..w8...dude..you say if longer valve opening the high performance? is that you min?

[Chevymonster203]

Jesus this guy is fucking i hope he does know that no two stroke has a camshaft accept a detroit diesel two stroke. And for one why would you add another lobe that just means when the engine is done sucking in air and the piston is coming up you are going to open the valve and let the pressure out. Plus a supercharger compresses the air in the intake and then forces it past the valve into the cylinder. Take it from me i am a mechanic and this guy is a fucking tard.

[ChargerMiles007]

@Chevymonster203

Well, I might be a Tard in your opinion, but not in lots of other peoples!

What toy said would be correct, it the camshaft was a full speed cam, like in a Detroit, However, I use this one as a 1/2 speed cam, so it needs 2 lobes to do the same job.

The "SuperCharged" lawnmower engine I built basically uses the Detroit cycle, but is a gasoline engine.

Check out my opposed 2 piston stroke, it has NO valves!

[crazyfvck]

@Chevymonster203 Perhaps you should watch some of his other videos. You obviously have trouble understanding his projects. The multi-lobe cam that he shows was used in a custom engine setup that he made, where two engines were joined by a chain. One engine acted as a supercharger, pumping extra air into the other engine to increase performance.

[ChargerMiles007]

@crazyfvck

Thanks for helping to explain my crazy cams!

Actually, the supercharger is necessary on these 2 stroke engines, or they won't run at all, I guess it is technically called a Scavenger pump, but I like SuperCharger better! :)

Miles

[crazyfvck]

@ChargerMiles007 Yeah supercharger sounds better :)

[ChargerMiles007]

@crazyfvck

I fully agree! :)

i have another engine in the works, this one uses a full speed camshaft and the regular poppet valves.

[crazyfvck]

@ChargerMiles007 Cool. I'm glad you're able to do all of this custom stuff. I've always wanted to build a custom Briggs with an external OHV setup. I was thinking of taking a standard Briggs block, adding an extended cylinder sleeve, then cutting away the section of the chamber where the valves normally sit (as well as the external section with the valve guides, etc.) Then I would build a custom cylinder head, and use the rocker arms and pushrods from an old Lister engine (very cheap to buy.)

[ChargerMiles007]

@crazyfvck

That could work for an OHV set up. One thing I have noticed though, when you cut parts off the block, it has a nasty habit of warping for some reason. I have seen it happen more than once. Just something to consider.

[MrTpengineer]

That works good for a air or steam engine, your lobes you added look a little longer then the other side, does that afect anything?

[ChargerMiles007]

@MrTpengineer

It just affects duration, or lift. Making thses cams is rather time consuming, so sometimes I am not very fussy about having the lobes exactly the best shape. Lately I have been taking more time with them though. I am working on a full speed cam 2 stroke poppet valve engine at the moment. It will be like a Briggs version of the Toyota S2 engine.

[MrTpengineer]

@ChargerMiles007 Cool, can't wait to see it :)

[ChargerMiles007]

@MrTpengineer

I will get it going ASAP, I am painting parts, and waiting for AC/DC Welding to do the welding on the head.

I am hoping it will run, since there will be a ton of EGR happening!

[refridga]

if theres always avalve open how does it have compression

[ChargerMiles007]

@refridga

That particular cam is for a supercharger, which is basically an air compressor. So it will generate some compression when the piston comes up, depending on the intake manifold volume that it is pumping into, and a few other factors, like throttle opening.

[Dillon1791]

i would like to see Honda/Acura make a V-tec 2 cylender 4 stroke OHC or DOHC engine for gokarts...they should also include a 2 speed trany set up for most gokarts. :D

[ChargerMiles007]

@Dillon1791

Man, I think that kind of horsepower on a kart would be Insane!!!!

We have an old racing Kart with a souped up 5hp Briggs on it, that thing is scary enough for me at 55mph!

[Dillon1791]

@ChargerMiles007 yea but just driving something with Acura's or Honda's name on it would be nice! And the sound of V-tec!  u gotta die for it! and yea..55 MPH is fats when ur 6 inches from the ground-no windshield or blockage or any super safty features! "rool cage and 3 point seat belt is wut i have"

[ChargerMiles007]

@Dillon1791

Yes, that sounds like it would be a cool engine to build :)

Driving a go kart really fast is a sweet experience, so long as nothing goes wrong! I guess most of us have been lucky so far, thank goodness!

[motorhead45102]

man i don't think the lifters like those lobs very well, meaning its not a precise polished machine job, but hey what works works!

[ChargerMiles007]

@motorhead45102

Yes, you are right, these aren't precision machined, or polished!

But most of my engines don't get much running time, so thats OK.

Only the Sleeve valve and the vertical to horizontal conversion have run for a bunch of hours. Oh yes, and the air compressor.

[mattc1683]

man if you build me one I will give you props at all my races and all over youtube. who knows maybe more people will buy them or you will get a shit ton of subs out of it. also I will pay like I said. I cant find one for my briggs any where for under 200 bucks it is robbery. send me a message man

[mattc1683]

how much would you charge me to make one of these for my briggs 6.5? I am building it for a race cart and so far I have done a port pollish, got a carb off of a 90cc dirtbike and rejetted it. put on a K&N filter, strait pipe exhaust, re seated the valves and milled the head down for compression. now I want more valve lift but I dont have a welder. it is a briggs 6.5 over head valve. please make me one I will pay you on paypal this is all I need to finish.

[ChargerMiles007]

@mattc1683

Gee, I don't quite know what to say to your request!

I am not really super interested in taking your money, as all this stuff is a hobby for me! However, I wouldn't mind helping out a fellow Briggs Fanatic! :)

The one thing I don't have is a 6.5 Briggs engine, or a camshaft for one.

Also, my cams work for a while, but they sure aren't face hardened or anything like that! What model # engine is yours, as I will start to look for a scrap one.

What lift/duration did you want?

[shinyfuzzy]

do u think i could weld extra nubbage on one of these to get more valve life? with a cheap stick? or would all the slag gets stuck in there?

[ChargerMiles007]

@shinyfuzzy

I actually welded up my first few cams using a stick welder, although I did have some of the special nickel rod for use on cast iron. I don't know how well a "normal" arc rod would work, but giving it a try couldn't hurt!

Sure, you could get more valve lift, and duration, but be careful to make sure the valve won't hit the head. I check that using Plastcene (modeling clay), but chewing gum, or something else less stcky could also work. Just put it on top of the valve, reassemble.

[shinyfuzzy]

@ChargerMiles007 couldntt hurt?! fuck! i could blow the motor lol but yeah i have an extra cam in a fked up 82 briggs 5hp that im betting is cast instead of stupid shitty plastic crap

[ChargerMiles007]

@shinyfuzzy

Yes, you could blow the motor, but 1 advantage to the flathead engines is that the valves can't hit the piston!

Yes, you would definitely want to clean all the slag off the welding, you don't want that coming off and floating around in the crankcase! A sandblast job would help out there.

So is this a real racing engine, or just a converted roto-tiller engine with a racing rod etc., like ours? (Which goes like H*ll I might add! :)

[NASTYTHEBOY]

@shinyfuzzy NO! make sure you have the special for miles used :p if you welf cast iron with steel rod, it will crack EVERYTHING!

[shinyfuzzy]

@NASTYTHEBOY its the heat differences in the cast iron that fuck it up right? watever i might get the 5hp beast going again if im not too lazy

[NASTYTHEBOY]

@shinyfuzzy no, that, but if your your really carful, and let it cool slowly, it will be a little more flexible and wont break, the real problem is that the metals just dont like to stick to each other, what you can do is have it tig welded, any legitamite welding shop should have the equipment :]

[Topsiekku]

weldings=(

[ChargerMiles007]

@Topsiekku

Yes, I know :)

Trust me, give me 2 pieces of plate, and I can do a pretty good job. These cams are cast, so that doesn't help matters, plus my flux core MIG is a cheap piece of garbage. Give me stick! :)

[HemiT426]

could i buy one of these from you fo my 5hp briggs?

[ChargerMiles007]

@HemiT426

No, but they sell racing cams for 5HP Briggs engines already. You could probably track them down on the internet. My son put one in a go-kart :)

[RicerEater1978]

@ChargerMiles007 why wouldnt you want to make money off of these?

[ChargerMiles007]

@RicerEater1978

How would I make money off these?

The camshaft for the 8HP SuperCharger I am using for my new SuperCharged opposed piston engine, took me about 11 hours to make! Most of the time was grinding the cam lobes to the required shapes.

I do get a very small amount from youtube views once the vid passes 10,000 views, but it is really very little.

To be truthful, I just build all this stuff, since I have been interested in engines since I was a youngster.

[RicerEater1978]

@ChargerMiles007 well there was a guy that was offering to buy one of these. i think it would be a great idea to make a bit of money if people want to buy them. i got interested in cars (mainly old cars and motors) about 5 years ago and im going through college courses now. im more into the bigger ones than small gas engines though.

[afdhalatifftan92]

Which the best?

[ChargerMiles007]

@afdhalatifftan92

Hard to say, as they all do different things.

A full speed cam definitely works better for a 2 stroke engine though.

[afdhalatifftan92]

@ChargerMiles007

Thanks for the fast reply!

[ChargerMiles007]

@afdhalatifftan92

You are welcome, I try to answer most comments, but I am not online everyday

Take care.

[KrankieV2]

the cam that runs at crank speed is pretty cool. How did you mod these? just weld and grind?

[ChargerMiles007]

@KrankieV2

Yea, just welded, ground, and maybe some filing also.

I am making anothe "SuperCharger" camshaft at the moment.

I am also thinking about a "902 Briggs Max Noise" kind of like the old 426 Max Wedge made by Dodge. I have noisy dogs on both sides of me! :( So I want to get even!!! lol

[junzkii]

we are using OHV (over head valve) engine 13hp 4 stroke briggs & straton (also known as vanguard) in boat racing.. and we are also used the engine 16hp cam -in- block which is the (L head ) type engine. as i said we do some adjustment in camshaft..but we lossed the race.. their engine(briggs & straton) is much better than i used.. we also do over sized the piston.. much bigger carburator.. but their engine (briggs & straton) is much powerful w/ high rpm

[junzkii]

we are using 16hp and 13hp briggs and straton in our boat racing here in the philippines. we do some adjustment also in camshafts. but i'm curious w/ your super charge modified camshafts... can we use that in my briggs? for boat racing?

[ChargerMiles007]

@junzkii

So you use 16 hp Horizontal shaft, or vertical shaft engines?

I can't see the supercharger camshaft working for you, as the ones I build operate on a 2 stroke cycle, and your engine still needs to be a 4 stroke. Are those 16hp engines OHV (over head valve) engines, or the older flathead (L head) type? I would think you could Hot Rod an OHV type engine better with a higher lift cam, ground out valve ports, modified exhaust etc.

[junzkii]

we are using briggs & straton in boat racing here in the philippines. we do some modification in our engine.. can you help us to improve our engine

[ChargerMiles007]

@junzkii

Hi there, I doubt I can help you, but look at the previous comment about Delta Camshafts. There are quite a few people that race Briggs and Stratton engines.

What size engine are you using? I know there is a alot availible for the model 13 (5hp flathead engine) since they use those in go-karts.

Talk to you later :)

[hannas1234]

I found a place that can do custom grinds to your specs. Delta Camshaft. They're in Tacoma, Wa and I think they have a website, but I don't remember the address.

[ChargerMiles007]

Thanks for the info :)

I doubt I will need there services, as these engines are all just experimental, and don't run long enough to wear the camshaft enough for me to worry about. Also, I would have trouble giving them the correct spec to grind to, as most of the time it takes me a few tries to get it right.

[JonWeidnerRacing]

I made a custum high lift cam for my 5hp briggs.  i have to agree lobe grinding is tricky. It took me a few trys.

[ChargerMiles007]

Yes, it is tricky! Mine look pretty sad, but they work well for the short time periods these experimental engines run. The one thing I tried that didn't work out, was grinding down the lifter diameter, I got it too small, and it actually dug into the cam lobe! That is when I decided to go with a full speed camshaft on my supercharged 2 stroke (I have not got that engine re-assembled, and running yet) We have been busy building a 440 for the Charger, got it back on the road yesterday :)

[BlakeMason2]

Heheheh "oddball" is right. Amazing "make it or break it" welding technology. Hand-ground lobes too.

[ChargerMiles007]

Yea, not my best welding effort, but I was using nickel sticks to weld the cast camshaft. The hand grinding of the lobes was pretty tricky :)