valve

Building a GX160, picture below. Working on the head now. Flat top piston is at 0 deck height. I am running a RTC-8 head off of a predator as I don't have the original Honda head for this motor, and will be running a .040 Honda head gasket. My question is, what is the acceptable clearance...

is the re a trick installing valve stems into the hole in the rim? i have the short stems with a seat roundness of about a little over .500" the opening in the rim is a little over .400" should i just grease it up and push it in as hard as i can or is there a stem with a smaller rim seat...

Alright guys I cam across something today that I have been worried about. My Predator 212 has seem to have lots of blow by. Its been smoking a lot and when I shut down the engine in just pull the cord slowly it puff smoke out the pipe. Im not running valve oil seals could this be the issue...

Well I had the head off cleaning and putting different valve springs in. I cleaned most of the carbon off and polished it up. After that it felt like it had a great compression it was running strong. But after today its easy to pull over and doesn't seem to have as much compression, with a...

Is this hole to the left of the exhaust valve part of a compression release system? This motor makes a really weird sound when you turn the crank slowly. Kind like those little novelty cans you used to turn over and it would make the sound of a cow in heat back in the 70's. So I think it's...

looking for a petcock for a fuji motors go-devil.. i was trying to pull off the old stiff fuel line and pulled a little to hard:doah: the small section that the fuel line goes over came of with it.. so im hoping to find another original part... something that fits would be great for now too...

I have this cam installed and it makes good power but seems a little lacky played with jetting and everything. Im only running 18lb springs, should I upgrade to 26lb springs? Will this wake it up a little bit?

Any one know were I can gat aftermarket valve cover? Different then thiscast aluminum one.

approx 4.25" x 8.75", shut off valve handle on top with center outlet.. $45 plus ship

I'm building a HF 212cc with 22 mm mikuni carb, header, removed oil sensor and govner just ordered fly wheel, con rod what lb 18? 22? valve spring should I run? What spark plug should I get what should I gap the plug at? Single electrode please.

hey OldMiniBikes , looking for a raceseng valve cover . sure someone grabbed up some during the sell out :thumbsup: i could really use one thanks for any help

Need help intake valve doesnt come right out, do I force it or what? Also what do I have to do to install in thanks

lost the rubber tube can i use some fuel line or will it melt

What are the valve stem sizes for the 14mm High Compression heads? The stock valves from the HF Predator 212 are too loose in the guides I searched and searched.... I had (wrongly apparently) assumed they wold be interchangeable as it said from the OldMiniBikes Warehouse If I need to order new...

i can or no please help

I'm upgrading my harbor freight predator hemi . I am not clear on which valve springs I should be using ? Does anybody have a part number off of the OldMiniBikes website ? Some of the ones I have seen said non-hemi . On my original predator build up our used 18lb valve springs, somebody said I need 26...

I have a Predator 212 with a RTC-6 head. It has stock 27/25mm valves but 5mm stems. I've converted to 5.5mm SS valves by replacing the guides with Bronze. DO I NEED THE VALVE STEM SEALS? HOW IMPORTANT ARE THESE SEALS?

So on my trike the valve stem ripped out of the tube. It was a larin. Rather than buy a new tube I thought maybe it can fix. All I did was put a washer on the stem. it had a rubber coating on one side to seal against the bottom lip of the stem. It came with a bolt together fiberglass bath tub...

ive got a big block tec on my chipper, i need a valve cover. I am going to rob one off this h70 i have but it means i still need one

Changed valve springs and cleaned the head but my exhaust valve retainer came off while running, Luckily the valve didnt fall in to the cylinder and cause any damage. Anyone know if the valve retainers are different or if my retainer is just bad? THanks