tuning

Hi, I have a Predator 212 Hemi and just finished my build with Billet flywheel Billet Rod 22lb springs Hot 265 Cam I'm having quite a bit of trouble getting the carb tuned and jetted correctly, I'm at around 650 ft elevation. If anyone has a similar build or has any helpful info I would...

Short time lurker, 1st time poster. I'm fooling around with a flat head on a Baja frame. After some research it seems the problem I am experiencing may be common with the pulsajet. The engine I believe is a 3hp, I have replaced the carb with a known 4hp as the original was worn at the...

When it comes to comet 30 series torque converters mounted on a heavily modified engine, as most know, in stock form they limit the engines rpms. There are several well known ways to make comet torque converters run better but so far there is no magic part that can make one engage at 3000 rpms...

I have a bigblock with ported head, big valves, header, billet rod and flywheel, cam, and a 34mm mikuni. It came with a 280 main and 50 pilot which is way big and running pig rich. I was wanting to know what jet size on gas some of y'all are using with this carb so I can get close without...

Anyone know how to tune these? I can get it to idle, but once I hit the throttle it bogs out. Sometimes if I ease into I can hit higher rpms. I tried a richer low speed but I still cant get it. Thanks

I just cleaned out and rebuilt my carburetor on my 3.5 HP Tecumseh and was wondering how to get the perfect idle tuning. It idles rough now and wants to move forward when I start it up and I have two screws with the needles on them. One is on the bottom of the carburetor's bowl and the other...

Anybody have any hints on tuning a GC160. I'm having trouble getting it to idle without engaging the clutch.

I recently re-jetted the main jet on my Honda card to .030 can anybody point my in the right direction on the correct tuning so it will run without it having to be half choked all the time not very familiar with the clones I just recently switched from briggs to see what I can do with a clone thanks

I have a 212 old predator with mild mmods. My engine (when warmed up) will cut out when full throttle, but runs good up to about 1/2 throttle. I dont want to buy a jet or extra things if I don't have too.

I'm tuning the pred 212 with a gx390 carb. Currently it has a .043 #109 jet on there. It idles fine at 2000rpm, but has a slight hesistation at first throttle. But if it's idle at 3000rpm, the hesitation is reduced a lot. I tried .039 about two weeks ago but it would only run half choke...

Not sounding so good yet.. Db30 engine idle - YouTube I got a new carb off ebay from china.. it looks just like the stock one... is there just one screw to turn that adjusts it? See video... thats the best I can get it so far :( the strange noises sound like death. I rode down the...

I have a max-torque clutch (real max-torque, not the clone ones that come with the engines) and it chatters on takeoff and slips when climbing hills. I installed the black spring for later engagement, it's a little better than before but not a lot. I know some people use washers to fix clutches...

Its been while since I tuned a carburetor, but I think my HF 6.5 is running a little lean. It takes about 15-20 minutes of ride time before it will idle which the choke engaged and the motor just seems to lag a bit. Can somebody give me a quick 101 on how to tune the factory carb on these...

I am having problems with SSScat idleing. Can anyone tell me what the proper settings are for the main jet on the bottom of the carb, and the air fuel mixture on the side of the carb at the top of the carb. I also noticed that there is a rubber o-ring on the air mixture screw that looks rough. I...

im kinda new to the whole high performance electronically controlled engines an i dont have the right equipment to tune my 86 mustang 347 an dont know wat to get also on kindof a tight budget any help would be great thanks. , any help would be great thanks

Good evening, I finally built a manifold to put my 5hp tec carb kn my Briggs 3hp. I dont know where my baseline screw settings should be. Would 1.5 turns out on each screw be ok to start? Also, how do i tune each screw once running? The bike is far from done so i cannot load the engine. Any...

Put a 5hp back together. ARC billet rod, new rings, shaved the brows and cleaned up the porting. Valves are lapped in. Running a Briggs downdraft carb. Governor is removed. Going to order a ARC flywheel this week. When I run the bike towards the end of its revving limits, I let off the gas...

When I first started working on the minibike it didn't run at all. First thing I checked was spark, it had none. After doing research and trying to fix what was there I assumed the condenser / coil was bad. I ordered a Mega Fire II ignition and a new coil and that seemed to solve that...

Hey all. I have a Briggs 55hp built by outlaw17 and need some help. First off I can't get the engine to idle correctly. Also it won't run consistently when I hold the throttle in one spot. I have to rev it to get a smooth throttle response. The carb also shoots a cloud of gas into the air filter...

Hey everyone I got a tilly hl 334 ab on my flathead briggs, I'm having some trouble tuning. As I'm coming out of a turn at slower speed and hit full throttle it pops and dies but when I let off the gas it starts to go again. Any suggestions what I should do? I'm running gas, pop off is at 10...