dome size ?

[brian]

Just wanted to know if anyone here can tell me where to start.

I am setting up a 4mil banshee engine for the first time. I don't want to use a spacer at the base of cylinders. I need to know what size dome to start with for trimming the 2mil out, and what radius it should be cut to in the squish area.

I want to end up with 18cc when i'm done.

anyone know of a simple way to calculate dome volume? i know how to measure the size, but dont know how to figure the size after mod.

 

Also, What are the options on the squish band ?

I plan to have an agressive dune port (almost drag) on stock cylinders which will probably be about 65.25mm (.05 over if 795 series pistons are available for that size)

What is the common squish clearance used in an engine like this ?

[CRAZY-SHEE!]

u need to call an engineer who knows what he is talkin about. Try jeff. ( at fast in case ya dont know) guy knows his stuff

 

www.farmandsandtoys.com

[brian]

Thanks, I agree Jeff is the man.

I just hate to call and take the man away from a paying job when I'm tryihg to do something myself....especially when

he sells the same service I am asking about.

If he has time to read this maybe he'll answer. If not, maybe someone else knows about it.

 

Besides, I imagine theres quite a few guys on here that know their stuff.

:thumbsup:

[brian]

Anyone got anything on this ?

[blowit]

Anyone got anything on this ?

 

 

 

I can tell you the squish target should be between .025-.040. As you calculating volumes, that is just some basic math there. We just use 3D modeling to design new chambers. I will tell you, you would need do calculate the dome in sections. I guess this is a little in proprietary for us.

 

Brandon

[brian]

I can tell you the squish target should be between .025-.040. As you calculating volumes, that is just some basic math there. We just use 3D modeling to design new chambers. I will tell you, you would need do calculate the dome in sections. I guess this is a little in proprietary for us.

 

Brandon

What software are you using ?

Does it automatically figure volume for you, or do you still need to manually do the calc. ?

[blowit]

What software are you using ?

Does it automatically figure volume for you, or do you still need to manually do the calc. ?

 

 

We designed this software for our needs. It does a little more than calc the volumes though. You should be able to use about any 3D CAD stuff to help you along. You can also use traditional Trig to get the job done though. For one head, that is probably best.

 

Brandon