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Doof.:roflol: So a long time ago(in a galaxy far, far away:lolgoku:), I pulled the old spark plugs from my 5 HP HiPo Briggs and my 3 HP FrankenBriggs, assuming they were dead. Recently the thought occurred that maybe the spark plugs were not the reason my engines were not running...

Ok, wow, here's a real problem for you guys!:( So the standard Raptor rod's oil clearance checked out at 0.002", so that's done. And I cleaned up the cylinder. Now there's another problem. *facepalm* You may remember it would mysteriously turn almost 2 whole revolutions and then lock. When I...

So I've heard a bit about valve springs binding around valve float rpms, but I haven't heard much except that it's bad and things break when it happens. Since I've got the normal Raptor rod coming, I won't have to worry about rod throwing, so my next concern is the valve springs. At ungoverned...

Well, since the Hothead is on hold for a while, I might as well get started on this thing. :auto: This is an old Team Associated RC10 car I got from my dad, who my grandpa bought it for. It's got all independent long travel suspension with adjustable oil damped shocks, a Vari-Lok differential...

It's ANOTHER Bird Engineering 41553 Starbird!!! That makes 10 total known ones. https://dallas.craigslist.org/dal/spo/d/rowlett-go-cart-project-frame-only/7002440220.html Seller's Description: "This is a project go cart - frame only Price $100, firm As is, no warranty" They don't even know...

So some of you may know that I now have a bad sidecover bearing on my flathead. It's the flange mounted ball bearing, since the next to last 3 in the engine code 132432 denotes that. Is it a slip fit or a press fit? If it is a press fit, I know a gear puller is a good way to get it off, but how...

[POBOY MODE] Sooo, I was on Ebay, in the "Go Kart Parts" section just for the heckuvit. And I found THIS(my brain hurts): No doubt written by someone in China who had to Gewgle Translate every word. :rolleyes: This guy needs to join us! [/POBOY MODE]

https://www.surpluscenter.com/Engines/Gas-Diesel-Engines/Horizontal-Shaft-Engines/148cc-5-25-Gross-Torque-Briggs-Stratton-Engine-097302-0016-F1-28-116255.axd CHECK IT! :eek: When I saw the upright design, my heart skipped a beat! :eek: $170 from Surplus Center, 19 left in stock. Not a killer...

Kinda building off this thread: http://www.diygokarts.com/vb/showthread.php?t=41501 Where did the whole term "spunkbrothers" come from, anyway? It happened while I was at Big Bend, but when I looked it up, nothing came up. Was it a thread that got way out of hand again and got deleted? :D Oh...

Ok, so my 3 HP flathead has a 2 inch Autolite 295 non-resistor spark plug in it, and a well working points system, and it has very, very strong spark. My tiller flathead I'm working on has the original stock spark plug and a questionable points system. It has weak/intermittent spark. And my HiPo...

"But mom I really don't know where it came from!" :roflol: So the story all happened today. I was out walking my dogs this morning, and I passed a neighbor's house, seeing this old thing in their driveway(turns out he's a scrapper). So I made a mental note and rode the Hothead over there...

Ok, the general gist on the internet is that these Briggs flywheels are a pain in the butt to remove. WRONG!!! Unless your flywheel is like, rusted onto the crankshaft, they are actually pretty easy. BTW - This is a beat up old tiller engine, NOT a low hour primo workbench queen. So the...

Clements Racing products sells these: http://www.mikeclementsracing.com/accessories.html Kinda like a bicycle freewheel mehanism, but it's cool. Quite frankly though I could only see these being useful on pavement with a stiff chassis. On a dirt track you'd always want live axle drive. Just...

I'm looking to get a little more low end grunt out of my flathead, and itsid suggested retarding the ignition timing a bit. Makes sense, as advancing timing increases high end HP. I really like the idea of this adjustable coil bracket:https://www.dynocams.com/item/jr-6733/ , which would allow me...

So I'm almost ready to install the Raptor rod in my flathead, but I have a few questions: Do I really need a piston ring compressor? Are the Rotary brand gasket sets Ok? And which way does the oil dipper point? Is the tapered side towards the front or back?

Ok, I'm writing this up, because It's been quite foggy to me before, the differences between a normal Briggs and Stratton 5 HP flatheads and Raptor racing flatheads. If this thread is in the wrong place, feel free to move it mods. First off, there were 3 main generations of Raptor flatheads...

I'm still looking into a better con rod for my flathead so I can remove the governor safely, but I've also noticed that there are some Briggs Raptor racing rods on Ebay for about 1/3 the price of an ARC rod(see pics) The first one is a 555179 part number, and the second one is a 555208. Could...

:censored::censored::mad2::mad2: I BENT my rim!!!! The right half of the front right wheel. I was going around a corner to the left, opposing the drive wheel. Long story short, the front wheels slid, and the kart went all the way up on the curb. :mad2: It bent the aforementioned wheel half, and...

Well, might as well start a build log for this thing, but it'll be a slow build due to the fact that the calendar won't slow down for my Build Off project, the Hothead. Anyway, down to the details. I've got a hot rodded Radio Super wagon that I picked up at Pate Swap Meet 2019 for $60. I also...

Behold my latest Craigslist acquisition! :cheers2: It's a 1976 Briggs 9 Ci flathead. I'm 90% sure it's 3.5 HP, but someone please confirm. It has good compression, and strong spark(it shocked me while I was checking spark! :lolgoku:), so it's essentially just carb problems, but I'm not sure if...