Engine porting

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Jun 15, 2004 | 11:03 PM

#221

Lynn E. Hanover

Fabricator

Joined: Jan 2004

Posts: 1,322

From: Central Ohio (Hebron) Zephyrhills Fla.

Quote:

Originally Posted by BoostedRex' date='Nov 18 2003, 04:02 PM

I know of some guys that used Devcon as well and they swear by it. One of them builds Peri port engines and uses the devcon to seal up all of the original stuff. He says that he's never had any problems with it. I'll see if I can get one of his emails and quote it into the thread.

Devcon Plastic Steel for the side housings and Plastic Aluminum for the rotor housings. They also have a stainless filled version and a kit to do under water repairs if that should come up.

Picture is suction out lines to scavenge pump as seen from below engine.

Lynn E. Hanover

Sep 20, 2005 | 02:04 AM

#222

BDC

Senior Member

Joined: Jun 2003

Posts: 917

From: Grand Prairie, TX

Here's some pictures from my porting gallery. Some of the people's housings shown are members of this forum.

http://bdc.cyberosity.com/v/Porting/

B

Dec 17, 2005 | 01:33 PM

#223

BlastinSideways12A

Junior Member

Joined: Feb 2005

Posts: 11

A have a quick question about the opening edge for a streetport. How far can it be opened up? I measure about 10mm from the edge of the rotor housing to the edge of the stock port on my S4 13B-T secondaries. If I were to open it up about 1.5mm so that there is 8.5mm to support the corner seal would this work or would my corner seals and/or sideseals get messed up. I would like to get an early opening because the housings are going to be used with 9.7:1 rotors and run as an NA.

Thanks

Dec 19, 2005 | 06:33 AM

#224

Lynn E. Hanover

Fabricator

Joined: Jan 2004

Posts: 1,322

From: Central Ohio (Hebron) Zephyrhills Fla.

Quote:

Originally Posted by BlastinSideways12A' post='787559' date='Dec 17 2005, 11:33 AM

You may not get much help here. This is kind of a reference book that get little activity. Post it one the daily frame and many will see it.

Lynn E. Hanover

Jan 20, 2006 | 10:08 AM

#225

BDC

Senior Member

Joined: Jun 2003

Posts: 917

From: Grand Prairie, TX

I believe that concentrating on the opening edge (and not the closing edge) is what yields high-end power. As far as strict measurements, I've got no idea off the top of my head, but whatever can be done to help the charge stay at velocity and in high volume launch into the chamber on the opening edge is what will yield the most high-end horsepower, IMO.

B

Jan 20, 2006 | 10:14 AM

#226

BDC

Senior Member

Joined: Jun 2003

Posts: 917

From: Grand Prairie, TX

Some recent porting work done from a few months back...

http://bdc.cyberosity.com/v/Porting/NeerajTandon/

Hey Judge Ito, how are my closing edge bevels? I still don't have them quite where I "want" them technique-wise but they're getting there.

B

Apr 17, 2006 | 02:18 PM

#227

Speedworks

Member

Joined: Sep 2005

Posts: 67

Quote:

Originally Posted by BDC' post='795328' date='Jan 20 2006, 08:14 AM

Man... that's one hell off a nice port job (y)

Mar 11, 2008 | 11:47 PM

#228

RICE RACING

Member

Joined: Oct 2002

Posts: 90

From: Utopia

Below is my street porting as put in ito's thread, showing tools I use and steps along way so others can see, I dont use any sand paper rolls and finish all by hand with burs shown, I prefer to keep port runners rough from my experience works well.

More step by step shots in link on www.fdowners.com quoted below

Quote:

Originally Posted by RICE RACING' post='896379' date='Mar 11 2008, 07:12 PM

Agree's

10.8mm is my limit, I never have problems at that range and all is verified with a sectioned rotor tip and cut off shaft to follow seal trace.

The gains going further do not balance out the negatives.

Pictures here of my street porting

http://fdowners.com/showthread.php?t=541

Been doing this exact porting style for last 11 years and works on all cominations of seals, nothing special needs to be done over stock parts to ensure trouble free use.

Final shots of completed side plates (THE HOON!) and also comparison of RR street port primary v's stock FD3S primary

Before

After

The HOONS exhaust ports, stage steps and comparison to stock

www.riceracing.com.au

Jun 1, 2008 | 08:18 AM

#229

thebluerx7

Member

Joined: Dec 2006

Posts: 33

From: australia

actually,i think i have ur zorst port sussed,intake no so easy to get the distances/shapes etc off ur pics though.

zorst port looks like levelled floor right though to housing surface,roof of port brought to roof of sleeve and then all squared off and radiused in corners and flowed into factory sleeve.

im by no means sayin it allcomes that easy,but thats gist of it yeah? porting looks bloody brilliant,primaries are massive.nice work.