dlnoss

What kind of price are you thinking? I have a desert racing friend who would probably be interested.

That is often a symptom of detonation. If it is the Banshee with 19cc domes and you aren't running race gas, I would be particularly suspicious.

I would follow Jim's recommendation.

I sell base spacer plates to several very reputable builders. It seems a good idea to keep the piston inside the cylinder. Just my opinion. I make stroker domes for those that like it the other way.

Is it spaced on top or bottom? Stock head or aftermarket head?

One thing I have seen a few times is excessive squish clearance, particularly when the stock head is used with a top spacer plate sandwiched between two head gaskets. This may not be how yours is set up.

Wow, with all of that stuff for sale, you should become a BHQ sponsor.

Here is a copy and paste of instructions that come with the Noss Head. The main difference is that the studs do have to be replaced with the Pro Design head. ______________________________________________________________ 1. Remove fuel tank and associated plastic. 2. Drain coolant. Remove plugs in sides of cylinders to be sure coolant is drained low enough so as not to run into cylinders when head is removed. 3. Remove hoses from stock head. 4. Remove nuts from head studs. 5. Remove stock head. 6. Place rags down in cylinders to prevent dirt and hardware from falling down into cylinder. 7. Clean top of cylinders using a razor blade, scotchbrite, or fine sandpaper. 8. Using grease to hold them in place, install the orings into the domes and into the grooves of the head that go against the cylinders. 9. Remove the rags from the cylinders then lay the domes down on cylinders making sure the notches are positioned towards the front of the cylinder. 10. Slide (don

Raising the compression will help the bottom end power.

Hey moneystick350, who are you...It's obvious who I am. Everybody else, The Goldrush is a really cool race, check it out K&N Motorcycles is the 'oldest' Yamaha dealer in the country. Great dealership.

It looks like they are about .55 pound each. Probably not lighter than stock. Around 5 times as strong. 7075 aluminum has a higher tensile strength than regular carbon steel, a little less than chrome-moly. So stronger than a solid steel 3/4" tie rod at 1/3 the weight. -David

I've never weighed them. They are solid 7075 3/4" aluminum. Not real heavy but real strong.

BHQ members do get a 10% discount

I do make stroker domes. The advantage of the stroker domes is they probably seal better than stacked gaskets. If you decide to go that route, you should check the deck height.

You can use stroker domes instead of the top spacer plate or a base spacer and standard domes.

Welcome to BHQ. It's a great place for info, BS, debates,,,,,,,,,,

Did you get it back yet?

There is a lot more to a dome than just the volume. The characteristics of the power are certainly affected by the geometry and clearances. I've not seen a Trinity or a Vito dome. Does the Trinity head motor rev out as well?

19cc at 700' with 104 octane

BansheeRider576, You should be okay with 21cc domes and 94 octane since your timing isn't advanced.

It depends on where in Utah. Whoever is going to do the port might be the best person to recommend a dome to go with the porting. It seems that I do remember hearing about some BHQ discount or something....

You would probably need to run race gas. What is your elevation and other mods?

The Noss head does have coolant deflectors to keep the coolant from just flowing across the top. Coolant is directed down through the cylinder water jackets for even cooling.

What is your elevation and other mods?

Bore and stroke dictate displacement; Combustion chamber (dome) volume dictates compression ratio and the shape of the combustion chamber has a lot of effect on the characteristics of the power. Elevation, other mods, porting, type of riding, and fuel are all considerations when selecting domes. There is such a thing as overkill with compression. 16cc domes are realistic on only a few motors.