http://devils.eng.fsu.edu/~bmatt/portpics/

Please take a look at the link i've posted it contains pictures of the port work i've been doing on a couple of motors. this is really the first time i've attempted to port a motor in a couple of years... i could definately use some constructive criticism of their layouts...

thanks,

Ray

 

Well, I have no experience to offer any worthwhile critique...but it sure looks good!

 

The actual shapes look good. There is one closup picture where it looks like you hit the edge with the side of the die grinder a couple of times. It looks just ever so slightly like this may be the case on the edge were the oil control ring passes. Doesn't look serious though just be a little more careful. On the edge inside the port that is the short turn radius (long opening side underneath) concentrate on spending alot of time here rounding this corner off and cutting it back from the underside as much as possible. Make that edge as gradual as possible. When the air turns past this inside edge into the engine, it needs to be nice and smooth. No sharp edges. Overall they look good though. Just spend a few more minutes on each one looking them over and using some common sense and they'll be hard to improve on.

 

i think the pictre you are reffering to is playing a bit of an optical illusion. there is still glue leftover from the tape i used to protect that area, i think what looks like a cut in that area is just debris.

On the edge inside the port that is the short turn radius (long opening side underneath) concentrate on spending alot of time here rounding this corner off and cutting it back from the underside as much as possible. Make that edge as gradual as possible.[/QUOTE]

i'm having a little difficulty picturing the area you are talking about. a little more specific would help.

i'm picturing a front housing port with the oil control groove on the left and the corner seal bridge on the right. i'm not quite sure the area you are referring to as the short turn radius - i'm thinking the inside of the face of the side housing, just beneath where the corner seal rides on the top of the port.

When the air turns past this inside edge into the engine, it needs to be nice and smooth. No sharp edges. Overall they look good though. Just spend a few more minutes on each one looking them over and using some common sense and they'll be hard to improve on. [/QUOTE]

thanks,

Ray

 

i think the picture you are reffering to is playing a bit of an optical illusion. there is still glue leftover from the tape i used to protect that area, i think what looks like a cut in that area is just debris.

i'm having a little difficulty picturing the area you are talking about. a little more specific would help.

i'm picturing a front housing port with the oil control groove on the left and the corner seal bridge on the right. i'm not quite sure the area you are referring to as the short turn radius - i'm thinking the inside of the face of the side housing, just beneath where the corner seal rides on the top of the port? i did quite a bit of work in that area, i don't think it shows in the pictures, though...


thanks,

Ray

 

man, i need to get better at this forum posting stuff... :-)

Ray

 

Your ports SUCK, Ray! Especially that 13B! You ruined that front secondary! I'll be suprised if that thing even runs!

(Ray's the other half of BR7 Racing, for those who are wondering )

Brandon
BR7 Racing

 

I couldn't figure out a good way to describe it. It is the area directly under where the corner seal rides. You don't want a sharp edge here. I couldn't tell if you did work here or not. Many people neglect this area so I just thought I'd be safe and mention it anyways.

 

Overall layout is really not bad. Exhaust ports : Rememeber,the more square you port is,the more noise it will generate.When going with very square port,pulse tuning on headers are more important,seeing that the wave differs greatley from round ports .My 0.2cents

 

short turn radius is basically the shorter side of the intake runner wall:

looking from a flange view, it's the inside wall in the direction that the runner curves toward. from a plate face view it's the runner wall along the outside edge of the port.