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FE Power Forums => FE Technical Forum => Topic started by: matt souders on July 04, 2015, 06:46:22 PM

Title: C4ae-g heads
Post by: matt souders on July 04, 2015, 06:46:22 PM

Just thought I'd post a couple pics and get a few opinions of a little port work. I cc'd the heads prior to grinding on them. They where 142 which I thought they where supposed to be around 150 which after porting (minus a little blending left to do) they measured at 153cc's. I guess I was wondering if anyone cc'd these heads before and after mild porting. I just tried to straighten the sides, raised the roof slightly and a little pocket porting. I left the short side alone except a little clean up of the casting flash.
(http://i593.photobucket.com/albums/tt13/football9000/Mobile%20Uploads/image_zpsx5ees1ti.jpg) (http://s593.photobucket.com/user/football9000/media/Mobile%20Uploads/image_zpsx5ees1ti.jpg.html)
(http://i593.photobucket.com/albums/tt13/football9000/Mobile%20Uploads/image_zpshvpjyf0n.jpg) (http://s593.photobucket.com/user/football9000/media/Mobile%20Uploads/image_zpshvpjyf0n.jpg.html)

Title: Re: C4ae-g heads
Post by: ScotiaFE on July 05, 2015, 05:16:53 AM

I'm by no means a head porting guy, but they look good to me.
Iron is tough, it takes some time to do all 16 holes. :P

Title: Re: C4ae-g heads
Post by: amdscooter on July 05, 2015, 11:22:27 AM

^^^ No joke, he's got some time in there.  ;) End product looks great. 

Title: Re: C4ae-g heads
Post by: matt souders on July 05, 2015, 04:39:03 PM

Thanks guys. I haven't kept track of time but probably have 2-3 hours in each intake port. Just starting the exhaust side. Haven't figured out how I'm gonna attack them yet. I guess no one has measured these ports before and after porting. Im just curious that's all.

Title: Re: C4ae-g heads
Post by: KMcCullah on July 06, 2015, 01:45:05 PM

Looks like you improved the flow but didn't go nuts enlarging your cross section. Should work good on a 390. It always get hung up on the "more is better" idea and ultimately screw everything up.  ::) Are you keeping the stock size valves?

I started down this road a few years ago and then changed my mind after I talked to Les Schmader. He only wanted $525 to port my C4-G heads and add bigger valves. I sent him the valves of course but for that kind of $$$ it was a no brainer for me. 

http://fepower.net/simplemachinesforum/index.php?topic=620.15

 

Title: Re: C4ae-g heads
Post by: BH107 on July 06, 2015, 03:23:03 PM

Looks real nice, but the real story will be when you get them on a flow bench and see how well they flow, and if they stayed quiet.

Keep us updated.

Title: Re: C4ae-g heads
Post by: matt souders on July 07, 2015, 02:34:37 AM

Valves are going to be cj size and I hope to get them on a flow bench soon. There going on a 390 with a 294s. Cam and a street master intake which I have a crazy off the wall idea for as well. 525$ plus valves sounds like a hell of a price knowing what time goes into this. Granted i didn't use carbide burrs Very much, to be cautious. I'm hoping to get flow in the 240 range by 400" of lift.