Rx7carl

Hi guys, Im porting my first engine. Using RB streetport templates. Its in the final roughing out stage. Any opinions would be appreciated. Thanks!

karism

Very Good Mr Perez!

I think you will have good midrange as well as topend with the size you made the runners.

What size is the exhaust port?

Karis

Rx7carl

Thanks Karis. I havent touched the runners other than to blend the radius to the new porting. I havent done the exh yet. I have the RB streetable SP template for that as well. Ill post pics of that when I do them.

813KR$

My opinion is, BIGGER ! ! !

Very nice and clean ! ! !

I like that . . .

Rx7carl

Nah, not gonna go monster on this one. Maybe the next one. Thanks for the compliment. Does the angle at the top of the port down into the runner look good? Is it too shallow? I dont wanna make that pocket too big.

rotarygod

iTrader: (1)

That looks better than most people's attempts on here. That should be fine. At least you can cut straight!

Jeff20B

iTrader: (13)

Carl, you might want to raise the roof here at the center of the circle.

Rx7carl

Thanks Jeff. I was unsure about that area so I didint mess with it yet. I need to look at some pics now that Im knee deep in this. I'm guessing I should raise it a bit so the air can get a straighter shot into that part of the port, rather than making that sharp turn?

jorx81@aol.com

iTrader: (6)

Flowbench time!

Zero R

iTrader: (1)

Carl stick your pinky in the water jacket and feel the backside of the port, it will give you a idea of how much meat is actually on there.

Rx7carl

You know it! From this point on I will be benching it till its finished.

Rx7carl

Thanks ZeroR. I recall someone telling me that a while back too. So Im gonna just blend that radius a bit more and call it finished.

karism

I agree with Jeff to raise the roof a bit.The current radius it has will hurt the flow.

(Like anyone can teach you anything about flow dynamics!)

:-)

kenn_chan

I had got some answers from you a while back about flow testing, just curious to see how your numbers are looking.

ken

Rx7carl

Havent flowed the new ports yet. I will post the numbers at different depressions when Im done. Im thinking at 20.3 and 28 inches of water.