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Copyright 2002 Tony Falcetano

 
Engine

Before After

Download Injector Sizing Excel Spreadsheet  
Planned engine is a 347 -- Probe forged 0.030 pistons and Scat 9000 cast crank, with AFR 185 heads, .005 deck height, Competition Cams XFI Stroker Cam:  XFI 236HR-14, Duration 286/300, Duration @.050 236/248, Lift .579.  30 Lb injectors, Pro-M 75 mm Mass airflow and  75 mm throttle body, Trick Flow Track Heat  EFI Intake, A9L computer. A Fidanza aluminum flywheel, Zoom HP48-1 Kevlar clutch, and Levy Racing T5 will put power to the ground. Calculated compression ratio is 10.78:1 static, 9.41 dynamic My calculations indicate we'll have to run the 30 lb injectors at 55 PSI to get maximum power out of this setup. Might have to pick up some 36 lb injectors in the future.

Update 15 Oct 06: New setup is a carb and Victor Jr Manifold, EFI is history.

Desktop Dyno put the carb combo at 537 HP.

 11 Dec  05 Engine Teardown

Don't forget the two upper intake bolts under the nameplate, the screws holding the nameplate were badly corroded and I had to drill the heads off them to get the name plate off.

No sludge here, just a little varnish. The engine had 71,000 miles on it. The cross hatching is still clearly visible on the cylinder walls. I almost hate to rebuild it -- almost.

Use a puller to remove the balancer, remove the center bolt, remove its washer, then reinsert the bolt without the washer so the puller bears against the bolt head and not the crank. The balancer will slide off over the bolt. That way, you won't bugger up the end of the crank, especially if you are going to reuse it.

The timing chain is not stretched much either.

 17 Dec  05 Engine

We pre-fit the main stud girdle and oil pump pickup. A little metal had to be ground off the girdle to clear the oil pump. Some folks swear by a girdle while some think it has no effect, but it won't hurt either. If you install one, be sure the top of the main bearing caps do NOT hit the girdle, you may have to sand the caps a little.

 

We also started removing the casting flash, deburring,  and chamfering  the sharp edges of the block before it goes to the machinist -- the less work I have to pay for, the better. The flash and sharp edges are stress raisers and have no place in a high performance engine.

 

There is about 3 /16" clearance between the new pickup and Quality Roadsters oil pan. The gasket will increase the clearance a little more, to just over 1/4". Ideally the clearance should be 1/4" to 3/8" Some folks use clay, but a ruler works just as well to determine the clearance.

23 Dec  05 More Engine

Here's the lower cylinder walls before the block was clearanced for the stroker crank

The block is ready to go to the machinist, Dennis Mitchell Racing Engines after the holiday. Check out the cool little engine stand, an eBay special, -- $30 + shipping and some paint stolen from my wife's crafts. It beats an old tire any day.
New parts go to the machinist too! He'll need all of the rotating parts to properly balance them. I'm going to have him assemble the bottom end and I'll do the top. Forged pistons just in case we get crazy and feel the need to add a little nitrous.
21 Jan 06  Engine Back!

The flywheel and block shield gets mounted so we we only have to put it in the engine stand once.

Here's the lower cylinder walls after clearancing for the stroker, not much material had to be removed.  

 
Blacks painted with POR Engine paint, new Melling standard volume/ pressure "Performance" oil pump is installed. If you look closely at the pump, the drive shaft goes clean thru the pump to give more support. The pump is a Melling #10687 and yes we used an ARP chromemoly shaft.

We had to readjust the pickup a little, the instructions for the Quality Roadsters oil pan call for 1/2" of clearance. The oil pan crank scraper also had to be massaged to clear the girdle.

The water pump extra inlet was drilled and tapped for a stainless steel plug.  Notice we kept the larger inlet to make connecting it to the manifold easier!

I'll have to make brackets for the alternator and Escort fuel pump. I was hoping to only fab one set of brackets.  I purchased a Summit bracket and was planning on making a matching PS bracket, but the alternator bracket won't work with the '95 cover.

Update: I decided to swap out the timing cover and water pump for older model year stuff; fabricating the brackets will be a bear with the '95 set up. There is just nor enough space in the front of the engine for the accessories. I anticipated a problem here, which is the reason I assembled the front of the engine so soon!

 
Ready for other assembly.  I still have yet to purchase the AFR heads.

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28 Jan 06  Timing Cover Swap  
The '95 timing cover and water pump has been changed for an 93 and earlier setup. See above.  Click here for details.

23 Apr 06 AFR 185 Heads
After over a month of waiting, I finally got the heads, now I need to install them. I had the springs upgraded to support a higher lift cam.
I replaced the stock AFR rocker arms studs with ARPs -- part number 134-7104. There have been some issues with the stock AFR studs breaking, so this was cheap insurance. $30 for a set of 16. If I had to do it over, I would go with 7/16" studs, but I already had the rockers and a stud girdle.
The longer stud on the left is the ARP stud; it's designed for use with stud girdles. The smaller head provides more clearance for the large rocker arms.
Using Comp Cams HI-Tech push rod checker, I determined that I needed 6.45 inch pushrods.  The mark is right in the center of the valve stem where the rocker rubbed it clean. If the mark is off to the center of the engine, the pushrod is too short.

I also checked for spring coil binding by inserting a paper clip between the coils when the valves were full open, no problems, plenty of clearance. Used the same paperclip to check for clearance between the rocker arm slot and stud, so it does not bind at the extreme edge of travel.


 
Here is the setup I used to check piston to valve clearance. The exhaust  was .200 and the intake .150 at their closest points. In addition, I checked it every 15 degrees or so. I made a checking lifter following Trick Flow's instructions.
Front of gasket mates with front of engine. You'd be surprised how many people get this wrong.

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The lifters get soaked in oil for few days while I wait for UPS to bring pushrods.

27 Apr 06 PS Pump Bracket
While I was waiting for pushrods, I used more CAD to mock up the bracket for the Escort power steering pump.
 
Here the bracket has been polished and mounted.

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30 Apr 06 Engine Assembly  
Assembly continues. I installed a stud griddle from  Performance Racing Warehouse and Scorpion 1.6 roller rockers.
The firing order for the CompCams Ford Stroker XFI Cam is 1  3  7  2  6  5  4  8. Its part number 35-775-8
The lower intake was test fitted and the gasket trimmed if it extended into the ports. The ports on the AFR heads matched pretty close to the Trick Flow manifold.
Do not forget the little filter basket for the PCV.
30 lb injectors  get soaked in cleaner and new O rings and filters were also installed.  After soaking, 12V power was applied to injectors to activate them and any crud was blown out with compressed air.
Won't be long now!  Have to make a bracket for the Mallory coil and a replacement spacer for the EGR out of phenolic (Garolite). Also need to fabricate brackets for the throttle cable.

The distributor is a Mallory # 7970404. Its a little smaller than the standard EFI distributors which will give a little more space for the fuel system.

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13 May 06 Engine Done!

 

The engine is finally finished, there may be some changes in the hoses and details later on, but for now, its ready to go in the car.

I set up the fuel rails and regulator according to the instructions on Mallory's web site.  This setup has the regulator attached to the rails for minimum pressure drop.

I also mounted the coil close to the distributor. The plug wires are Accel Extreme 9003, Spiral Core, 8mm Vari-Angle Boot plug wires. 1000 degree temperature rating at the boot and 600 at the wire. Tough enough to take the heat of the headers.

Aluminum  flywheel, all I need now its the transmission -- still waiting  You can also see the Garolite spacer between the throttle body and intake manifold. I painted it and the 1" Trick Flow spacer black. I hope the manifold clears the hood with the thicker spacer, if not I'll disassemble the intake and mill the spacer down.

 

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29 May 06 Engine Ready to go in car!

I test fit the headers, good thing too, because a little bit of the flange had to be ground off to clear the small ledge on the AFR heads.

 
In she goes.

Note the sun umbrella, 90 + today.

Finally!

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4 June 06 Cooling System and Air Intake

Using a Summit Universal dual core radiator, its made by Northern Radiator -- the same company that makes the radiators for Tri-States, but only $150. The cap hits the frame, bummer. I'll take it to to a welding shop and see if they can cut off the filler neck and patch the hole.

 
  The welding shop did a great job removing the cap and patching the hole.
Lower radiator mount, just a piece of round steel tube with tabs welded on the ends and covered with hose. It wanted it somewhat adjustable.
A homemade shroud made of  1/16th 6061-T4 (easier to bend than T6) I put some strips of eDead inside the shroud to keep it from vibrating -- not too much cause that stuff is heavy! I also used push on weather striping on the outside edges to seal it against the radiator fins.
My engine machinist showed me this trick, he glued everything with 3M Weather-Strip adhesive -- freeze plugs,  the oil gallery plug under the intake manifold, and so forth. If you read the label, its good till 300 degrees and is recommended for gaskets.
I purchased some Cool Flex clone corrugated hoses, but replaced the cheap rubber couplers and clamps with better quality industrial stuff from McMaster.

The over flow tank is from eBay and the CSR T-Filler from Jegs. 

Cooler (not cold) air intake system. I cut flaps in the fender panels, the openings will later be covered with mesh and the panels powder coated. Hopefully the flap will prevent some of the spray and heavy muck thrown up from the tire from getting on the filter. I may add another splash shield near the filter.
A titanium heat shield for the PRO-M MAF and air filter cuts down on the radiant heat from the headers.
I had my doubts if the air sucked in by the front vents off the pavement will really be much cooler, especially here in the South. So, I decided to give this a try. Several folks on the on an online forum recommended cutting holes in the inner fender to let air in to cool the footboxes, if it cools the footboxes, it ought to provide some cooler air for the engine too.

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10 June 06 First Start !

Here we primed the oiling system with a drill and priming tool. We pushed the car outside, bled the fuel system and it started on the fist try - amazing!  Did not run worth a crap, but it started.

We ran into several problems.... it overheated before we could add more water and the bottom radiator hose blew off.  Its also running very rich probably because the computer still thinks its a stock engine.

Had several fuel leaks from hoses that previously tested good. I ended up replacing two entire hoses with a Russell SS braided line from a local speed shop. They were both leaking at the L bulkhead fitting and I could not get them to reseal. I also had a leak at the fuel cell bulkhead fittings, which required dropping the fuel cell so I could get at the interior nuts to tighten them.  

19 June 06 Second Start!
I connected the Tweecer to the ECC and made some adjustments.  But before I did I took this opportunity to clean up some of the fuel injector wiring. 
Here is the best way I could come up with to fill the cooling system while getting most of the air out. The filler tube is higher than all of the other openings, it worked well, I may make this permanent with a SS ball valve and nipple.

The Tweecer adjustments to the ECC cured the overheating (running to rich) but overall the engine still does not run very well -- now it has a problem backfiring thru the left exhaust pipe -- have to keep diagnosing, fixing and Tweecering.

 
Hole in the thermostat, rad cap off until it ran out the in-line filler. No squeezing hoses 'cause they are SS. Closed up the system and ran the engine till it got to operating temp, then let it cool overnight. It only took about a quart of water the next day after it cooled.

7 July 06  Misc Engine stuff
I made the filler permanent with a stainless steel ball valve and 3/8 x 5 1/2" stainless steel pipe nipple. I also plugged the end of the ball valve with a stainless steel plug in case the valve vibrates open or gets bumped.
I also replaced my fuel tank breather with the OEM charcoal canister and will connect the canister purge vavle (CANP)  to the intake and computer. The 97 degree weather we had here overcame the little charcoal filter I had previously installed.

Note that this is one emission control that does not rob horsepower, when the valve opens and the mixture richens, the computer thru the O2 sensors will lean it out if needed.

Still have lots more tuning to do.

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10 Oct 06 Carb Conversion  
We were unable to get a good tune from the Tweecer, and there is no one locally who can tune the ECC. For these and other reasons, I decided to switch it over to a carburetor.  All of the old EFI performance parts went up for sale.
An Edelbrock Victor Jr. and 750 cfm Performer carb control the fuel, while a Pertronix Plug and Play distributor ignites the fire. A Holly return style regulator keeps the fuel pressure under control; we did switch the high pressure Walbro pump out for a low pressure pump.

I actually like the look much better than the modern looking EFI. I choose the Edelbrock carb for its ease of tuning. Its pretty simple and it comes with instructions.

5 July 07 New Fan
The car always runs on the hot side, I've been trying to do something about it. The stock FFR fan is on the left, aprox 1600 and a new Flex-a-lite fan at the right - 2500 CFM and quieter too.  I also installed a new 160 degree thermostat, changed to oil to 10-W40 synthetic blend and backed 2 degrees out of the timing.  With these changes, its much better, but still gets up over 200 degrees on a hot day in traffic, which is not too bad.

Winter projects include a new Pertronix vacuum advance distributor and a new fire suppression system, the old bottle (actually the gauge) popped because of the heat, maybe behind the headers was not such a good idea after all.

Bet you did not know that Ford made several different size crank pulleys for the 302. The larger pulley is from a truck engine. Its part number E9TA-6312-BA and is 6 5/8" in diameter. The small pulley is part number E4ZE-6312-AA and is 6 1/8 in diameter.  The larger pulley has been sandblasted in preparation for painting.

28 Dec 08 Zinc Anodes  
I took a lesson from the boating world, this is something I have been meaning to do for a while, but just now got to it. I installed a sacrificial zinc anode in the engine to help ward off any galvanic action (corrosion) I got the pencil zincs from USA Zincs.com in Florida. These are 3/8 NPT in size - #E1. It had to be trimmed a little before it would fit properly  in the manifold -- although the E1E size would probably not need trimming. I installed one in the intake in place of a stainless steel plug.

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