Author: Dave Williams; dlwilliams=aristotle=net
Joe Weinstein wanted something with more oomph for his '86 Saleen Mustang. He also lives in San Francisco and didn't want any hassle with the California smog check system. Specificially, he not only wanted it to pass smog, but for every part the C.A.R.B. was concerned with to be 100% California legal.
The 1993 Cobra R came with a 351W, so as far as the CARB was concerned it was a legal retrofit. As far as the CARB is concerned, the casting number on the block *is* the engine; therefore, we needed a block with a correct casting number. However, the F150 pickup roller block was *not* a legal interchange; it had to be a *Mustang* block, which meant it had to be a Cobra R block... and the Cobra R block had a unique Cobra R part number, and they're not available as replacement parts from Ford! Joe got confirmation from Ford (on dead trees, beloved of bureaucrats) that it was okay to use a truck block. Paper is your friend...
The next problem was an intake manifold. There are lots of EO'd manifolds out there, but the EOs are only valid for pickup trucks. (as of when we began this project, back in '98) Apparently the CARB almost never checks to see that an EO-marked part is actually valid for that particular vehicle, but we were assuming a worst-case scenario. There were two legal 351W intakes - the original Cobra R part, with either the original cast upper or the GT-40 tubular upper, and one from Saleen. There didn't look like there was a whole lot of difference between them, so we went with the Ford bits for stealth reasons. We knew that it was possible to flow more air through the cast upper than the tubing upper if it was ported enough, so Joe sent the intake off to Extrude Hone, who lightened his wallet substantially while taking probably 1/4 inch out of the runners. The intake is still going to be the cork in the whole setup, but it's as good as it gets... that's indisputably 100% smog legal for his particular setup, anyway.
I wavered back and forth on cam selection. The engine would have enough cubes to tame a Ford E303, which is - somehow - smog legal, but reports from people who have used them said passing smog could be iffy even with a 5.0. We were building a much larger engine, but we still had to meet the same limits. I decided to cheat and ordered a somewhat smaller Crane hydraulic roller that was not EO'd. I already had an EO sticker from an E303... but when the new cam came in, it came with the sticker! Crane had run it through the CARB certification procedure between the time the catalog was printed and when I ordered the cam.
The particular Edelbrock heads we used were the best available at the time. We waited several months since various places kept talking about smogging a better head, but we finally had to go with what was actually for sale.
There are some more pictures, but they're still on undeveloped 35mm waiting for round tuits...
The crank is a 400 Ford casting, as usual. It has already been stroked to
4.06" and cut down to 240/Six rod journal size. The counterweights have been
profiled for piston clearance at TDC, which is why they have such an
exaggerated football shape. Now I'm cutting the OD down so it'll spin inside
the Windsor block.
Heads:
At the time we built the engine, the best of the California-smog-legal heads
were the Edelbrock Performers. This particular set came in with the seats
sunk far into the combustion chambers and stacks of shims under the springs,
which would have been an automatic return, except I had to work on them
anyway. I smoothed the seats in while polishing the combustion chambers,
blanded the bowl areas, and polished the exhaust ports and chambers.
Assembly:
Just parts laying around; I probably put them there to get some room while
clearing some free space on the workbench.
Oil Pan:
Joe's car has an oil sensor in the pan and the new Canton pan didn't come with
a bung for it. I MIG welded one in and smeared some epoxy around just in
case. The Canton came with a gold finish, but it was sort of mangy and all
the welding and hammering didn't help it any, so I painted it black to match
the rest of the engine.
Intake:
This is the fancy Extrude-Honed intake manifold...
Fire-Up:
This is another one that had to be run before shipment. I had to build some
Ford brackets for the run stand, find a bellhousing to mount the starter to,
then a 5.0 starter, etc.
Here I'm assembling bits to fire it up before shipment. I didn't have any
reverse rotation water pump bits to match the timing cover, so I made up a
garden hose adapter. Ten feet of 5/8" clear plastic tubing comes off the
intake manifold, which is an old cast iron 2bbl part. I scrounged some
manifolds, adapted them to the 2" pipes on my run stand mufflers, found a 460
DuraSpark distributor and installed a Motorsport steel gear on it to match the
roller cam, stole the distributor cap, wires, starter, and valve covers off
TRX, etc... it takes more stuff than you'd think to fire one up.
After the engine was primed, the oil pressure gauge would hit 70 PSI before
the drill made one full revolution!
Shipping:
I've started taking lots of photos while crating engines now. Forklift blades are a problem. An engine shipped to London had a fork run through the side of the crate and through the oil pan; another sent to San Francisco was knocked clean out the back side of the crate. Nothing will stop a forklift blade at a running pace, but the freight companies always try to claim the engine was improperly crated. Ford and Chevy just band an engine to a pallet and staple some laths over it, not a proper crate at all. I do better than that...
MAXIMUM OVERDRIVE RACING ENGINES 410W Ford stroker completed 11/18/2001 for Joe Weinstein, Moraga, California ***** 351W Ford stroked to 4.06", stock 4.00" bore (408 CID) Crane #2030 hydraulic roller cam, 216/222deg @ .050", .533/.544" lift Edelbrock Performer aluminum heads ***** warranty: If it breaks, you get to keep all the pieces you can find. OIL FILTER----------------------------------------------------------------- * oil filter application: 1978 Nissan 510, 2.0L 4 cyl (L20B) Purolator Filter number L30119 Fram PH2850 Motorcraft FL-181 Wix 51452 These are full size, have no bypass spring, but do have the rubber flapper for anti-drainback for faster oil pressure buildup on cold start. This is technically a metric filter, but they will screw on just fine. You might want to keep everything clean so you can take one back if they have made a production change that keeps them from working. *Check* for the rubber flapper and no spring, just in case the filter maker has made a change. You can do without the flapper, but you don't want the spring. If you need a half height filter use the Purolator L22167 or equivalent. TORQUE SPECIFICATIONS ----------------------------------------------------- --------torque---------------spec-----------thread---lube------------------ rod bolts stretch to .0065 (ARP spec .0062-.0067) 3/8-24 ARP moly lube main cap bolts torqued to 95 ft-lb (Ford spec 90-100) 1/2-20 30wt ND oil note: 1) use moly grease under bolt head 2) step 1: 50 ft-lb step 2: 70 ft-lb (reverse pattern) head bolts torqued to 75 ft-lb (ARP spec 75) 1/2-13 ARP moly lube note: 1) use hardened washers, ARP moly grease both sides of washer 2) block is blind tapped, no sealer needed 3) step 1: 50 ft-lb step 2: 75 ft-lb (reverse pattern) 4) heads must be retorqued after two days, or after engine is first run damper (harmonic balancer) bolt (Ford spec 70-90) 5/8-18 30wt ND oil note: use automatic transmission fluid as lubricant when pressing damper on intake manifold bolts (Ford spec 23-25) 5/16-18 sealer exhaust manifold bolts (Ford spec 18-24) 5/16-18 antiseize rocker bolts (torque 40 ft-lb) 5/16-18 30W ND oil timing chain sprocket bolt torqued to 40 ft-lb (Ford spec 40-45) 3/8-16 Loctite 272 blue cam retainer plate torqued to 10 ft-lb (Ford spec 9-12) 1/4-20 30wt ND oil oil pan bolts (Ford spec 7-9) 1/4-20 oil (Ford spec 9-11) 5/16-18 oil oil drain plug (Ford spec 15-25) 1/2-20 oil water pump bolts (torque 12-18) 5/16-18 antiseize timing cover bolts (torque 12-18) 5/16-18 oil 1/4 NPT threaded oilway plugs Loctite Pipe Sealer With Teflon or silicone sealer, Teflon pipe sealer oil pump pickup (Ford spec 9-11) 5/16-18 Loctite 242 oil pump cover plate (Ford spec 9-11) 1/4-20 Loctite 242 oil pump body (torque 30-35) 3/8-16 Loctite 242 spark plugs 14mm antiseize bottom pulley to damper (Ford spec 35-50) oil valve cover (Ford spec 3-5) 1/4-20 oil fan to water pump (Ford spec 12-18) 5/16-24 antiseize flywheel bolts (ARP spec 85) 7/16-20 30wt oil COMPONENTS --------------------------------------------------------------- Heads: Edelbrock Performer aluminum heads Edelbrock recommends Champion RC12YC for a baseline plug 1.94/1.60 valves disassemble polish exhaust ports scribe chambers to cylinder bores lay chamber walls back to block scribe lines feather in valve seats in chamber smooth valve seats in ports polish combustion chambers and exhaust ports install Crane 44308 springs and retainers, set spring heights sandblast valve heads coat valve heads with CBC2 ceramic thermal barrier, bake, polish back and face cut valve for low lift air flow regrind valve faces regrind seats clean assemble vacuum check Valvetrain: custom Howards 5/16" pushrods 7.53" installed on exhaust 7.55" installed on intake lash caps on exhaust side 1.94" installed height on Crane #44208 valve springs, +.050 keepers new Ford roller lifters Competition Cams lifter spider Competition cams aluminum pedestal roller rockers Crane hydraulic roller cam #444222 216/220 deg duration at .050"; 270/278 advertised .533/.544 lift with 1.6 rockers valve float limit 6500 RPM with 356# springs firing order: 1-3-7-2-6-5-4-8 Ford Motorsport M-6268-A302 roller timing set Block: new F4TE roller 351W block clearance block for stroker crank chase threaded holes touch hone bores #600 finish with torque plates install oil and water plugs clean paint semi-gloss black Crank: Ford 400 clean core Magnaflux offset grind to 4.060" stroke turn mains .020" undersize lay back snout ring for Windsor timing sprocket shorten nose to Windsor length turn down OD to fit Windsor block shape OD to fit 6.2" rods trim oil slinger flange down cut second keyway for timing sprocket install keys bevel front edge to clear oil pump polish journals clean balance to 50 oz 5.0 flywheel and damper Rods: Ford 300 Six, 6.2" long hot tank Magnaflux glass bead narrow sides on mill fixture deburr and dress sides knock out old bolts cut shanks and caps install new ARP bolts resize big ends chamfer big ends balance adjust side clearance on final assembly bevel corners of #5, 6, 7 for cam clearance on final assembly standard width rod bearings, not narrowed, std/.001, .001s on bottom Pistons: Wiseco custom forgings 4.00" diameter custom CNC dished tops to mirror Edelbrock chambers 18cc dish volume pin height: 1.26" pin diameter: .975 (300 Six) wristpin offset: .060" ring widths: 1/16 1/16 .217 (3/16 + spacer) mask, sandblast demask, clean coat TLML moly antifriction on skirts coat CBC3 thermal barrier on tops demask bake buff wash Speed-Pro file fit moly rings, 1/16 1/16 3/16 Assembly: check rod to block clearances (.100 minimum) check rod to cam clearances (.060 minimum) check piston to crank clearances (.040 minimum) degree cam check rod side clearances #1 .008 #2 .011 #3 .010 #4 .008 check crank end play check valve/piston clearance check pushrod length hang pistons on rods (pressed pins) file fit ring gaps verify TDC on harmonic balancer install new Ford roller pilot bearing Induction: Ford 1993 Mustang "Cobra R" 351W intake Ford cast upper Extrude Honed flow figures (CFM@28"): cylinder # CFM 1 297 2 297 3 288 4 291 5 294 6 288 7 280 8 294 fuel rails: Ground Pounder billet aluminum Oiling: Melling oil pump new Melling 351W drive rod Canton 351W-Fox rear sump pan weld in bung for oil sensor heat and bend rail for oil pump clearance (bad pan) remove factory MIG spatters straighten uneven rails as much as possible tweak oil pickup to clear stroker crank Miscellaneous: turning torque, short block with cam, 35# new Ford 5.0 flywheel, 50oz flywheel .003 TIR ARP flywheel bolts Edelbrock aluminum 5.0 reverse rotation water pump Ford 5.0 reverse rotation timing cover ARP head bolts Dana/Victor gaskets Assembly: find pushrod length check valve/piston clearance check rod/cam/block clearance find TDC and adjust timing pointer degree camshaft file fit rings check piston clearances adjust rod side clearances check lifter preload; adjust with lash caps check flywheel runout check oil pickup to pan clearance trial assemble final assemble pre-oil with distributor tool install carburetor intake, carb, distributor run-in on run stand remove carb bits, install EFI bits, crate =========================================================================== assembly lubricants: rod bearings: GM EOS rings: Unilube two stroke oil cylinder walls: Mobil 1 5w30 piston skirts: Mobil 1 5w30 wrist pins: GM EOS head bolts - threads: ARP moly lube main bolts - threads: 30wt ND head, main bolts - under head: ARP moly grease rod bolts: ARP moly lube cam bolts: Loctite 272 blue cam retainer plate bolts: Loctite 272 blue cam lobes: 30wt oil cam journals: 30wt oil cam distributor drive gear: moly grease cam retainer plate/sprocket: moly grease crankshaft rear oil seal: GM EOS =========================================================================== assembly notes: Wrapper: Leave the engine in its plastic wrap until you're ready to install it Sealers: sealers and thread goops usually work well when applied according to the directions. The major part of the directions usually calls for the mating surfaces or threads to be *clean*. Use acetone liberally to clean all metal parts to be sealed. don't get carried away with sealers. "Less is more". Excess sealer usually winds up blocking the oil pump pickup. That is not good. not all sealers are oil proof. Read the application charts before purchasing. Use only O2-sensor-safe sealers most sealers should be allowed to dry to some degree before the parts are assembled. *Read the directions*. *Follow the directions*. Don't get impatient. Have another beer, take a leak, or clean up some of your mess while you wait. Cleanliness: keep your hands and tools clean and you have less chance of dropping crap into your new motor and less chance of slicing a hand open when you slip with a slimy tool. A 75 cent roll of paper towels and $1 tub of hand cleaner will do. Money: Once you get everything ripped apart you will begin to hemorrhage from the wallet as you find things that must or should be attended to while the engine is out. Remember, everything always costs more and takes longer than you figured. INSTALLATION: ------------------------------------------------------------ Use sealer on the oil pressure sender. Wire wheel or otherwise thoroughly clean the water temp sender. Install with a minimal coat of antiseize. Sealer and corrosion can cause resistance at the joint and will make the sender reading inaccurate. Throttle linkage - oil it all while it's loose. If it's a cable, oil it using a modeling clay funnel or motorcycle cable oiler Make sure the battery cable isn't resting on a header or exhaust pipe. Make sure the battery is grounded to both the chassis and the engine. It probably has a big wire to the block or head and some little cheesy wire from the intake manifold to the firewall. Use at least #4 (battery cable size) direct from the negative post to the starter and to the chassis. Your starter and headlights will appeciate it. Your new motor will probably take *much* more oomph to turn it over than the old one. You might want to have the starter looked at before you put everything back together. It'll never be any easier to get to than right now. Use antiseize on the starter bolts. Make sure the battery is fully charged before trying to start a new motor. RUN-IN: ----------------------------------------------------------------- Make sure you don't have any loose wires or hoses in the way of the fan before firing the engine. It is a great temptation to just start it up with nonessentials hanging hither and yon. Pour in 5 quarts of your favorite brand of non-synthetic oil, 10-30 or 10-40 weight, and screw on an oil filter. It probably wouldn't hurt to fill the filter before putting it on. With the "+"coil wire disconnected and spark plugs out, crank the engine over until oil comes out the pushrods, or use an engine priming tool and a drill. Attach the coil wire and valve covers, put the plugs in, attach plug wires. Fill the radiator with straight water. Smoke and noise will come from the motor as paint burns off, etc. Ignore anything that doesn't sound terminal. Water temp will probably go right on up there; it's okay as long as it doesn't go over 230 or boil over. If you have near neighbors remember this will make a fair amount of noise. Oil Viscosity: Use the lowest viscosity oil required to maintain hot idle oil pressure of at least 25 psi. This will circulate the maximum amount of oil through the bearings. Very thick oil just goes right through the popoff valve built into the oil pump and you can be starving the bearings while the guage happily reads 60-80 PSI.