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Question on porting. PICS #692221 05/08/10 12:18 PM 05/08/10 12:18 PM
Joined: Jan 2003 Posts: 5,907 Athens, Greece Pyper70 OP master
Pyper70 OP master Joined: Jan 2003 Posts: 5,907 Athens, Greece	So I am out in the garage and I wanna clean up my Edelbrock heads a little bit. I went ahead and bought a bunch of stones, wheels, and polishing bits for my dremel. I have some pics below and need some opinions. I have never cut into a set of heads before so some advice would be much appreciated. Picture #1. Its a water jacket. There seems to be some casting blocking the passageways, a few of the water ports are like this. Can I trim this flashing away? Picture #2. Exhaust ports. I am using RemFlex exhaust gaskets and the exhaust port of the Eddy head is 1.6425". The exhaust port on the gasket is 1.8890". Should the exhaust port match perfectly with the exhaust gasket? Picture #3. Intake Ports. I am guessing that the folks at Edelbrock opened these up as far as they will go with the gaskets they supplied. There seems to be very little to cut away. Should I leave this side of the head alone since it is opened so much? Picture 1. Picture 2. Picture 3. Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s

Re: Question on porting. PICS [Re: Pyper70] #692222 05/08/10 12:22 PM 05/08/10 12:22 PM
Joined: Jan 2003 Posts: 5,907 Athens, Greece Pyper70 OP master
Pyper70 OP master Joined: Jan 2003 Posts: 5,907 Athens, Greece	One more question....I noticed this as I was moseying around. It looks like the stock Champions are mismatched to these heads I have the Champion RJ12YC How far should the spark plugs be sticking into the chamber? Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s

Re: Question on porting. PICS [Re: Pyper70] #692223 05/08/10 03:11 PM 05/08/10 03:11 PM
Joined: Apr 2010 Posts: 93 CA M mojavered member
mojavered member M Joined: Apr 2010 Posts: 93 CA	That is the wrong plug. That one is only 3/8" long. You need a 3/4" plug, RC12YC. 71 Challenger RT 440 / 727 / 8.75

Re: Question on porting. PICS [Re: Pyper70] #692224 05/08/10 04:24 PM 05/08/10 04:24 PM
Joined: Jan 2003 Posts: 8,064 Arlington, Texas earlybee master
earlybee master Joined: Jan 2003 Posts: 8,064 Arlington, Texas	Since you never done porting before just clean up the casting flash.

Re: Question on porting. PICS [Re: earlybee] #692225 05/08/10 04:32 PM 05/08/10 04:32 PM
Joined: Jan 2009 Posts: 374 CONNECTICUT R RoyceFlo73 enthusiast
RoyceFlo73 enthusiast R Joined: Jan 2009 Posts: 374 CONNECTICUT	I dunno. Even somebody who hasn't done a lot of porting could port to match the gasket. It definalty wouldn't hurt to do. It's not going to be any real night and day difference but it will help.

Re: Question on porting. PICS [Re: RoyceFlo73] #692226 05/08/10 04:49 PM 05/08/10 04:49 PM
Joined: Jan 2003 Posts: 20,733 Eagle, Idaho Neil The Doctor is in.
Neil The Doctor is in. Joined: Jan 2003 Posts: 20,733 Eagle, Idaho	The exhaust gasket being bigger than the exhaust port is fine. Most of the time people don't do much to the exhaust port runner size unless they are trying to turn a lot of rpm. Match the intake manifold opening and the intake port opening to the intake gasket size by using a colored marker and a scribe to outline the shape. Gradually blend the cutting back into the ports rather than leaving a sharp angle.

Re: Question on porting. PICS [Re: Neil] #692227 05/08/10 05:07 PM 05/08/10 05:07 PM
Joined: Jan 2003 Posts: 5,907 Athens, Greece Pyper70 OP master
Pyper70 OP master Joined: Jan 2003 Posts: 5,907 Athens, Greece	Quote: The exhaust gasket being bigger than the exhaust port is fine. Most of the time people don't do much to the exhaust port runner size unless they are trying to turn a lot of rpm. I won't be spinning too high...Normally because I have a Gear Vendors and 3.55's I'll be driving 3000rpm. If I get the GV out of it and wanna play the highest rev I go is about 4800. I am more about getting maximum torque than high rpm's. Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s

Re: Question on porting. PICS [Re: Pyper70] #692228 05/08/10 05:41 PM 05/08/10 05:41 PM
Joined: Jan 2003 Posts: 20,733 Eagle, Idaho Neil The Doctor is in.
Neil The Doctor is in. Joined: Jan 2003 Posts: 20,733 Eagle, Idaho	When I say high rpm I'm talking about 7-8k or more. Most street driven big blocks can't go that high anyways. I wouldn't do anything to the exhaust ports other than smooth the casting flash and bumps down.

Re: Question on porting. PICS [Re: mojavered] #692229 05/08/10 05:47 PM 05/08/10 05:47 PM
Joined: Jan 2003 Posts: 5,907 Athens, Greece Pyper70 OP master
Pyper70 OP master Joined: Jan 2003 Posts: 5,907 Athens, Greece	Quote: That is the wrong plug. That one is only 3/8" long. You need a 3/4" plug, RC12YC. Will the NGK BKR5E work in this case?...I highly doubt anyone in Greece sells Champion plugs. Engine is 10:1 Flat Top Pistons, Hedman Shorty's, Dual 500cfm Edelbrocks. Isky 480. How do Denso plugs work in this case? Perhaps a Bosch plug? Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s

Re: Question on porting. PICS [Re: Pyper70] #692230 05/08/10 05:56 PM 05/08/10 05:56 PM
Joined: Apr 2010 Posts: 93 CA M mojavered member
mojavered member M Joined: Apr 2010 Posts: 93 CA	Just find something like an Autolite that has these specs. The heat range could change depending on plug. 14mm Thread Size, 19mm (3/4") Reach, 5/8" (16mm) Hex Size, Gasket Seat, Resistor, Copper Core, Projected Tip, Heat Range 12 71 Challenger RT 440 / 727 / 8.75

Re: Question on porting. PICS [Re: Pyper70] #692231 05/08/10 06:04 PM 05/08/10 06:04 PM
Joined: Nov 2006 Posts: 1,459 oklahoma F forphorty pro stock
forphorty pro stock F Joined: Nov 2006 Posts: 1,459 oklahoma	Don't open up the exhaust port to gasket size. Those Hedman shorties you have are likely smaller than the gasket.

Re: Question on porting. PICS [Re: forphorty] #692232 05/08/10 06:20 PM 05/08/10 06:20 PM
Joined: Jan 2003 Posts: 5,907 Athens, Greece Pyper70 OP master
Pyper70 OP master Joined: Jan 2003 Posts: 5,907 Athens, Greece	Quote: Don't open up the exhaust port to gasket size. Those Hedman shorties you have are likely smaller than the gasket. Yeah...You got a point there....The Hedman's have an exhaust port of 1.5905...Looks like the exhaust port will flow right into the header flange. Might be some turbulence since the gasket is that much wider...Thanks for pointing that out. Quote: Just find something like an Autolite that has these specs. The heat range could change depending on plug. 14mm Thread Size, 19mm (3/4") Reach, 5/8" (16mm) Hex Size, Gasket Seat, Resistor, Copper Core, Projected Tip, Heat Range 12 Got it...I was finding both resistor and non-resistor, v-shaped, and what not....I'll hit up the parts store monday for those spec's you listed..Thanks Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s

Re: Question on porting. PICS [Re: Pyper70] #692233 05/08/10 07:16 PM 05/08/10 07:16 PM
Joined: Jan 2005 Posts: 12,423 Kalispell Mt. H HotRodDave I Live Here
HotRodDave I Live Here H Joined: Jan 2005 Posts: 12,423 Kalispell Mt.	NGK and Nippon Denso make great plugs and you should be able to find one of those that work. Bosche plugs are the worst plug on the market, I have seen countless times where someone will do their own tuneup then bring us the car and can't figure out why it runs worse instead of better, get rid of the bosche with pretty much any other plug and the car is all better. I am not causing global warming, I am just trying to hold off a impending Ice Age!

Re: Question on porting. PICS [Re: HotRodDave] #692234 05/08/10 10:16 PM 05/08/10 10:16 PM
Joined: Oct 2005 Posts: 8,906 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,906 Ontario, Canada	Since flow also has a lot to do with port volume as well as knowing what the hell you're doing I'd say leave them alone and take all that junk you bought back for a refund. But since you won't take that advice ... Leave the exhausts alone. The flash in the water jackets is insignificant, grind it if it makes you happy. As for the intake ports, blend where they left off into the rest of the port - That looks like it probably causes more turbulence than anything. If you're going to spend time on the intakes then you'd better get the intake manifold involved too. Gasket-match the heads then bolt everything on the motor and match the manifold to the heads. Frankly I think you'd pick up more speed by giving the car a good wax job - oh, and by putting the right plugs in those heads!

Re: Question on porting. PICS [Re: Stanton] #692235 05/09/10 05:30 AM 05/09/10 05:30 AM
Joined: Jan 2003 Posts: 5,907 Athens, Greece Pyper70 OP master
Pyper70 OP master Joined: Jan 2003 Posts: 5,907 Athens, Greece	Quote: Since flow also has a lot to do with port volume as well as knowing what the hell you're doing I'd say leave them alone and take all that junk you bought back for a refund. But since you won't take that advice ... Leave the exhausts alone. The flash in the water jackets is insignificant, grind it if it makes you happy. As for the intake ports, blend where they left off into the rest of the port - That looks like it probably causes more turbulence than anything. If you're going to spend time on the intakes then you'd better get the intake manifold involved too. Gasket-match the heads then bolt everything on the motor and match the manifold to the heads. Frankly I think you'd pick up more speed by giving the car a good wax job - oh, and by putting the right plugs in those heads! Talk about tough love...GEEZ... I'll blend the intakes back a bit today and clean up the water jackets, I'll leave the exhaust side alone. I'll check on the Intake manifold as well. As for returning the tools....I'll keep em. I don't like returning tools when there is nothing wrong with them. Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s

Re: Question on porting. PICS [Re: Pyper70] #692236 05/09/10 08:32 AM 05/09/10 08:32 AM
Joined: Feb 2003 Posts: 12,675 Columbia, CT M moper I Live Here
moper I Live Here M Joined: Feb 2003 Posts: 12,675 Columbia, CT	I dont think I could add much to Stanton's post. Leave the exh smaller, I like to remove the CNC "seam" from the intake ports... They do not enlarge them, simply machine the port in the right spot. Core shift can be an issue with them so some heads get ugly there. So I blend that. If you dont know what you're doing, leave it alone. That is the best instruction...lol. Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.

Re: Question on porting. PICS [Re: moper] #692237 05/09/10 10:06 AM 05/09/10 10:06 AM
Joined: Feb 2005 Posts: 5,221 Branson, Mo. J joedust451 super gas
joedust451 super gas J Joined: Feb 2005 Posts: 5,221 Branson, Mo.	Alittle more tough love, What the hell kind of hack job is on those intake ports, i hope you didn't do that, or is that just the photo angle? 75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU

Re: Question on porting. PICS [Re: joedust451] #692238 05/09/10 11:38 AM 05/09/10 11:38 AM
Joined: Jan 2003 Posts: 5,907 Athens, Greece Pyper70 OP master
Pyper70 OP master Joined: Jan 2003 Posts: 5,907 Athens, Greece	When I took those pictures they were how the factory sent them.... Just finished I went through and cleaned the intake ports with a tungsten carbide bit, followed through with 120 grit sanding drum, finally ended up polishing them with a mini wheel buff first course, then medium.... Cleaned up any casting flash in the exhaust side (down inside there was some)... Cleaned up the water jackets and hit those with a 120 grit sanding drum. I am gonna go to the "Jap store" tomorrow (Thats really the name of it) and see if they can get me some NGK's BKR5E or some Denso K16PR-U. With any luck I may have these installed by the coming weekend. Still battling a damaged Ulnar nerve in my left arm Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s

Re: Question on porting. PICS [Re: Pyper70] #692239 05/09/10 12:27 PM 05/09/10 12:27 PM
Joined: Feb 2005 Posts: 4,318 Prospect, PA BSB67 master
BSB67 master Joined: Feb 2005 Posts: 4,318 Prospect, PA	Quote: When I took those pictures they were how the factory sent them.... Just finished I went through and cleaned the intake ports with a tungsten carbide bit, followed through with 120 grit sanding drum, finally ended up polishing them with a mini wheel buff first course, then medium.... Cleaned up any casting flash in the exhaust side (down inside there was some)... Cleaned up the water jackets and hit those with a 120 grit sanding drum. I am gonna go to the "Jap store" tomorrow (Thats really the name of it) and see if they can get me some NGK's BKR5E or some Denso K16PR-U. With any luck I may have these installed by the coming weekend. Still battling a damaged Ulnar nerve in my left arm Did you completely disassemble the heads when you did this?

Re: Question on porting. PICS [Re: BSB67] #692240 05/09/10 12:37 PM 05/09/10 12:37 PM
Joined: Jan 2003 Posts: 5,907 Athens, Greece Pyper70 OP master
Pyper70 OP master Joined: Jan 2003 Posts: 5,907 Athens, Greece	Uhhhhhhh,,, No... I shoved a wet shop rag in the intake port before I started and before I finished each port I blew it out with compressed air. Pulled out the rag, blew it out again, then ran through each port with a pressurized can of solvent and then blew that out with compressed air as well. Wiped everything down and put duct tape over all the ports. I have all the tools to remove the valve springs. Should I go ahead and remove that while I am at it, clean em up again and see how well the valves move in the guides? Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s

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