broncbob

I don't really know, but my guess is velocity. I'm thinking the smaller opening is to speed up air flow, giving a slight over filling, or positive pressure VS static atmosphere pressure that the larger opening will give you. I may be way off though.

The shift forks will look cooked on the tips if they are bad. Best thing I can tell you is to have a friend turn the input while you shift the trans in the bottom half of the case on the bench and see what is going on.

You will have no problems with the front stock tires. I cant help much with paddle selection, as I have never been to silver lake. Get haulers and skip the molded paddles, they are heavy as hell and suck power.

I'm not quite sold on these yet, they sound like a 4 mill aggressive dune port for a ton more money. They sound more like a trail set up than a dune set up. I don't know about other duners, but I like a nice top end for the big hills and fast sections. It sounds like these will fail with out a bunch of porting work to put at least some top end in them. I had this very conversation with Kim and K&T when I built my 421, after I told him what I wanted he put me onto a ported cub, and I am very happy with it so far.

I sent him a offer 500 below NADA

3 ounces per gallon R50. It's what Kim form K&T suggests.

Mohawks and haulers or extremes, there is nothing else that comes close. Molded paddles are nothing more than heavy egg beaters for the sand. The suck worse than anything has sucked before. You will be better off on 3/4 dead haulers than any molded paddles.

I cooked 3rd gear to the shaft... I have seen pistons put on backwards, leak down tests failed from a lose primary drive gear, cylinder put on backwards, clutches installed in the wrong order, and a host of other stupid shit done when in a hurry.

Heat cycle it 3 times bliping the throttle, NEVER let it idle for more than 30 seconds. Re torque head, check jetting and let her rip! Do not up you oil mix, do not baby it past a jetting check. You may stop a bit more often to let it cool during the first tank of fuel, but make sure it hits operation temps before it stops. What your trying to so is make sure the rings don't glaze over, therefore never seating to the cylinder walls. This will cost you power and life of the rebuild.

I'm guessing that the 421 is going to kill my 371 aggressive dune port?

My bet is shift forks too if every thing is adjusted as it should be.

All gears or just a couple of them?

Thinking of stepping up from my 4 mill stock bore, aggresive dune port, to a clean up port cub. How much power increase should I see? I have been on a drag port cub, and it kills my stock bores, but never been on a clean up port.

Wait, the cans on the ends of my pipes are supposed to have shit in them?

I rock cut fronts, full rears, twin flags and a 6 over arm on my 4 mill. Don't think a 421 needs a wheelie bar? I have one stand my fat ass wayyyyyy up on a hard launch at Sand Mountain UT. No amount of clutch feathering was bring it back down either, I had to back out or go over. This is on a 8 over arm.

AV gas is good stuff! It ages better than any fuel I know of when kept in the right conditions, it's cheaper than race gas, and holds a closer octane ratting than race gas, is going to be clean fuel, free of water and dirt and any gay ass stuff they put in at the pump these days. All the stories about burning up engines.....the time that most planes are asked the most for power is on take off and climb out, when they have the most weight on, and are running at WFO throttle! Once you are up, you back out of the throttle and tune with EGT's. Here is a link for AV gas prices by zip codes, watch the date that it was last updated. http://www.airnav.com/fuel/local.html

How about just the head, jugs and pistons?

By a used TRX 450R master, way better than stock and cheaper than buying calipers.

SLO, was the window at your seat on the bus strawberry or bubble gum flavored? Face it man, there are limits to the stock head, and most people don't want to F with them to find out what they are. It's so much easier to change a dome when you want to play mad scientist than it is to pull the head and cart it off to the machine shop and have it decked and re-chambered. Case in point, my brothers stock bore and port banshee. We wanted to find out how much dome and timing we could throw at it and not deto the pistons back in to beer cans. As it turns out, at 5000' on 91 octane we could run +5 on the timing and 18cc domes. We started at + 2 and 20cc domes. So that would have been 3 trips to the machine shop, 7 or 8 head gaskets, (we opened it up to make sure the pistons weren't getting beat) maybe more. All that just to play around, or you have a cool head. We have the domes kicking around, but I bet even if we had to by them, we came out cheaper than what the machine shop and head gasket costs would have been.

Go with the Noss Machine head, uses stock studs and acorn nuts, SEXY! The head can be changed with the engine in the frame, pipes have to be off, I take the tank off, but you don't have to.

The magnetic holders would be the shit, except I do metal fab in my shop. Nothing worse than having a socket covered in grinding shavings when your playing in a engine! Savage, I have never seen Princess auto, even when I was up in Canada.

Found the story on these. http://www.berryintl.com/images/cst2.jpg They were just a idea pitched to Sears, they were never put into production.

Most of mine came in larger sets, before they came in the nifty lil holders they do now. If I had bought my tools like that, I would have spent way more than I all ready have. To give you a idea of the amount of tools I have, I have 2, 40" roll aways with matching chests on top, and two field boxes that are stocked. But I work on a lot more than just quads and bikes. I even have a few tools to do heavy diesel repair kicking around.

You know who makes the trays? That's about perfect!

Nice thought bro! To think I have wasted thousands on tools and tool boxes when all I ever need was vice grips! I beat the shit out of my brother for using vice grips on the axle nuts of my bike when we were kids ( he was to lazy to find the wrench), true story! I have since grown up and found out what they were really used for, and they are a handy tool to have.