A460 HEAD PORTING

Go down

A460 HEAD PORTING

Post  tconnection on March 14th 2012, 10:36 pm

Is there any key points to focus on when polishing out the ports and bowls in the tfs ahead? I mean besides the rough casting, the sharp edges and the short turns? If it's all secrete, that's fine, I understand.
Thanks

tconnection

Posts : 840
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  powerstrokeace on March 14th 2012, 10:40 pm

Send them to Charlie

ACE
avatar
powerstrokeace

Posts : 1492
Join date : 2009-09-07
Location : colorado

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  cool40 on March 14th 2012, 10:45 pm

the short turn is where i gained a lot on my old A460's,not sure on the tfs heads but they're good out of the box compared to mine.
avatar
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7135
Join date : 2009-08-31
Age : 47
Location : on the 1/8 mile dyno

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  tconnection on March 14th 2012, 10:55 pm

IIIIIIIII don't know. i might mess around and get that 1,000 horse i'ld like to have if i send them to him. Which ofcourse since i bought them from Lem i should be able to get in line. Uma have to check the cost. This ahead setup can be high dollar, is high dollar. But! It is what it is.

tconnection

Posts : 840
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  cool40 on March 14th 2012, 11:00 pm

pay to play............. Smile
avatar
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7135
Join date : 2009-08-31
Age : 47
Location : on the 1/8 mile dyno

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  IDT-572 on March 14th 2012, 11:05 pm

cool40 wrote:the short turn is where i gained a lot on my old A460's,not sure on the tfs heads but they're good out of the box compared to mine.

The old A heads short turn looks like a 90 * turn straight down. Work out the short turn and the bowl and you could look like a hero............ Wink
avatar
IDT-572
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 4581
Join date : 2008-12-02
Age : 57
Location : Shelbyville Tn.

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  powerstrokeace on March 14th 2012, 11:26 pm

Charlie porting is priced right. Hand porting or CNC porting. But don't waste time just have him do them. I know that nows not the time because you wont get them back till FALL! affraid

Ace
avatar
powerstrokeace

Posts : 1492
Join date : 2009-09-07
Location : colorado

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  cool40 on March 14th 2012, 11:28 pm

IDT-572 wrote:
cool40 wrote:the short turn is where i gained a lot on my old A460's,not sure on the tfs heads but they're good out of the box compared to mine.

The old A heads short turn looks like a 90 * turn straight down. Work out the short turn and the bowl and you could look like a hero............ Wink
geek
avatar
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7135
Join date : 2009-08-31
Age : 47
Location : on the 1/8 mile dyno

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  tconnection on May 2nd 2012, 12:41 pm

Im basically done working on these heads. I got the exhaust polished pretty slick. How slick should the intake be? I got some pics but i gotta get them on photo bucket and figure out how to post. Its been awhile since i post some pics.
Thanks

tconnection

Posts : 840
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  IDT-572 on May 2nd 2012, 12:43 pm

You don't want the intake port polished just the finish a sanding roll leaves is fine.
avatar
IDT-572
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 4581
Join date : 2008-12-02
Age : 57
Location : Shelbyville Tn.

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  tconnection on May 2nd 2012, 1:04 pm

They are just as slick as the exhaust. What problem can being to slick cause?
Can any part of the port remain slick?
Thanks for your info.

tconnection

Posts : 840
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  IDT-572 on May 2nd 2012, 1:06 pm

A slick surface could tend to have fuel adhere to it and dribble into the port. A semi ruff surface wont let it do that. Not the end of the world just not optimum.
avatar
IDT-572
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 4581
Join date : 2008-12-02
Age : 57
Location : Shelbyville Tn.

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  tconnection on May 2nd 2012, 1:11 pm

I understand, thanks alot.
Thanks again

tconnection

Posts : 840
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  Barney on May 2nd 2012, 1:42 pm

tconnection wrote:They are just as slick as the exhaust. What problem can being to slick cause?
Can any part of the port remain slick?
Thanks for your info.
Just rough em back up a little. As has been said, the short turn and bowl will give you the greatest return.
avatar
Barney

Posts : 2577
Join date : 2009-12-02
Age : 42
Location : Kirkland, Il

View user profile http://www.hdraracingseries.com

Back to top Go down

Re: A460 HEAD PORTING

Post  tconnection on May 2nd 2012, 1:51 pm

120 grit roll should do it?

tconnection

Posts : 840
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  IDT-572 on May 2nd 2012, 2:33 pm

Sure, that's fine.

Most flow gains (most cfm in the least amount of grinding time) are within .750 of the seat on a BBF head. Wink
avatar
IDT-572
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 4581
Join date : 2008-12-02
Age : 57
Location : Shelbyville Tn.

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  rmcomprandy on May 3rd 2012, 12:29 am

tconnection wrote:They are just as slick as the exhaust. What problem can being to slick cause?
Can any part of the port remain slick?
Thanks for your info.

They WILL flow more air when they are slick however, being a rough surface but, smooth contour WILL make more power with less fuel.


rmcomprandy

Posts : 4985
Join date : 2008-12-02
Location : Roseville, Michigan

View user profile http://www.rmcompetition.com

Back to top Go down

Re: A460 HEAD PORTING

Post  tconnection on May 3rd 2012, 12:40 am

Ok thanks, sound good. Im gonna go back over them with a 120 grit roll.
what about the intake manifold? does it need to be a lil rough also?
Thanks

tconnection

Posts : 840
Join date : 2009-02-17
Age : 52
Location : Alma, Ga

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  dfree383 on May 3rd 2012, 1:14 am

tconnection wrote:Ok thanks, sound good. Im gonna go back over them with a 120 grit roll.
what about the intake manifold? does it need to be a lil rough also?
Thanks

Yes.
avatar
dfree383
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 13968
Join date : 2009-07-09
Location : Home Wif Da Wife.....

View user profile

Back to top Go down

Re: A460 HEAD PORTING

Post  rmcomprandy on May 3rd 2012, 9:59 am

tconnection wrote:Ok thanks, sound good. Im gonna go back over them with a 120 grit roll.
what about the intake manifold? does it need to be a lil rough also?
Thanks

Personally, I use 80 grit on the intake ports.

rmcomprandy

Posts : 4985
Join date : 2008-12-02
Location : Roseville, Michigan

View user profile http://www.rmcompetition.com

Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum