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RILEY TWO PORT (TM)

 PRICE DROPPED - SAVE $1000.00 - CALL


 RILEY PRODUCTION UPDATES:


 

CALL ME . . .  YOUR DREAM COULD COME TRUE.

513-724-0700 (OHIO, EST, 9-5 M-F)

 THANKS TO MY CUSTOMERS FOR 15 YEARS OF "ACCELERATION LIKE A MOTORCYCLE"

  744 Sold Around The World

Dependable

Reliable

Riley Two Port Cylinder Heads!

 

6.5%-7.25%  Ohio sales tax to Ohio state residences only.

Have Questions?

 

24 hours & 7days a week

 

RILEY TWO PORT

 

 

 

 

 

Blue engine built by Bob Baasí Engine Shop in Alexandria, MN for Ron Limrick of Thunder Bay, Ontario, Canada. Model B Ford featuring a Riley Two Port, and a Robert Roof dual updraft intake with a pair of Model B Zenith carburetors.   Well done guys!

 

 Riley Two Port tm

RILEY SPARE PARTS    &    OFFICIAL  GASKETS     ARE  AVAILABLE

 PLEASE CALL (513) 724-0700 FOR INFORMATION

The Complete Kit Includes All Cylinder Head Parts, Fully Assembled.

 Customers are encouraged to send in your engine photos.

 FREE assembly manual available as a PDF file by email  - Just ask.

Generally speaking, the head is a bolt-on out of the box after cleaning and painting (polishing and porting if desired).

Two men can install the head in a weekend after the block is prepped.

The set-up is easy and uncomplicated using common automotive tools.

  

Cast Iron "F" Type Head; Modern Valve Train, 3 Valves Per Cylinder; Compression is 138 cc (+-) Ratios = 7:1 and includes 13 Precision Castings and Most Parts Needed To Install.

Produces 80 to Over 105 HP* at the wheels "Out Of The Box". Not bad for a four banger that had 40 HP from the factory.

Several Optional Parts : Side Plates,  Up & Downdraft Manifolds, Crank Pulley, Water Pump Adapter And Much More. 

Proudly Made in U.S.A.

30 day Warranty On Parts & Labor. I Stand behind every head built & shipped, Period! Charles H. Yapp

One Of The Finest Speed Products Ever Produced For The Ford 1928 to 1934 Model A & B

 Polishing Not Included. Prices & specs subject to change w/o notice. 7% Ohio sales tax to state residences.

Riley Two Port SPECIFICATIONS

 Note: most parts are fully interchangeable with original Heads

The Riley Two Port is a faithful reproduction of the original Riley Dual-Valve-In-Head made from 1929 to 1932 for the Model "A" & "B" Ford. Our new model is the rare 1929 "first version", with the spark plugs on the driver's side. The Riley Two Port is a powerful, efficient and reliable 12 valve OHV "F" head (8 intakes in the head and 4 exhausts in the block) that more than doubles the horse power, runs cooler, gives better gas mileage, accelerates like a motorcycle (sm), is fully oil pressurized, fully adjustable and fits under the hood without modification. Because it is authentic cast iron, you will not have adverse corrosion or expansion problems like you would with a soft aluminum head.

 

The Riley Two Port has three valves per cylinder: 2 intake valves in the head, for each cylinder  and one exhaust valve in the stock location in the block. The unused intake port hole is used as the new pushrod hole.

Above is the NEW chamber. The new chamber is about 98% milled to match the head gasket. The 2% un-machined is around the gasket edge. This area was left "as cast" to insure that the gasket fit properly.

Your Block: For normal road driving and cross country touring, use a stock Model "A" or "B" Ford four cylinder block (1928-1934). The block should be rebuilt. Babbitt bearings are fine, insert bearings will last longer. Use the stock oiling system and rods. We recommend a counter balanced crankshaft and a metal timing gear. Your exhaust valve train, and four intake adjustable tappets must be in place.

COMPRESSION RATIO: All R2P heads are delivered with a 1/16" deep circular fly-cut  above the cylinders. This is to help insure that pistons do not touch the combustion chamber. We offer a 150cc version with a 1/16" fly-cut depth (+ - 6.65:1CR @ standard bore). Some engine rebuilds have the pistons higher than the deck, which increases CR. Oversized cylinder bores increase CR. Example: our 150cc version with @ .080" overbore, with flat top pistons, flush with deck and our gasket is about 6.75:1CR. If your pistons pop up .040" expect about 7:1 CR.

PERSONALLY: 7:1CR is the sweet spot for Riley Two Port HP for overall street performance. 8:1CR doesn't show much dyno gain at street level rpms. For compression changes in the field: 1/64" mill equals 5cc and 1/16" = 20cc.

Customers needing LOWER CR:  Can machine material off each piston's top, Mill material out of chamber, deepen fly-cut over piston (destroys squish effect - not recommended), or obtain pistons with custom pin centers.  . . .  we do not supply these services.

 

Combustion Chamber: Chamber surface is now about 95% machined. Chamber design is subject to change.

 

 

 

 

 

 

 

 

 

 

 

 

Wire Groove: Each head is grooved 2-1/4" between cylinders 1 & 2 and 3 & 4 for a stainless steel FIRE WIRE to improve gasket clamping.

Head Gasket: HIGH TECH "GRAPHITE-STEEL-COPPER" COMPOSITE  HEAD GASKETS with copper fire rings. A special polymer coating on both sides melts into the small capillary scratches on the head and block and stops water leakage. These are excellent Riley Two Port (tm) Head Gaskets. . . . The best we have ever offered.  I honestly feel these special gaskets have made the Riley Two Port a product to recon with. I by these in bulk and I think I have the lowest price in the community. I have my name stamped on each gasket to show my approval. Everybody should carry a spare gasket with them, but these babies very seldom blow or leak. I trust them.

Gaskets: 1 head gasket, 2 Intake manifold, 1 water pump,  2 fire wires, and OHV cover gaskets supplied.

Head Studs/Bolts: We provide 4 long studs/nuts and 10 bolts. After years of experience we have found that bolts make installing and removal so much easier.

Camshaft: NOT SUPPLIED: A Model "B" camshaft is excellent for most touring, near stock idle and fast road driving. Almost any performance cam grind can be used, but those with stock or just slightly more lift at the intakes and 355 degrees (+ -) of duration seem to work best. Remember the Riley uses two intakes per cylinder, so lift, while very important, isn't as important as in a flathead.

Intake Port Covers: Included

Two per head, aluminum "port cover" can be polished. Used to cover unused intake ports on side of the block. "Riley" brand available until stock is exhausted.

Intake Manifold: OPTIONAL: Choose from: Dual down-draft uses Stromberg or Holley three bolt carburetors.

Exhaust Manifold: Use the stock Ford cast iron exhaust manifold or our new "Y" split headers for even more HP gain.

OPTIONAL: Riley Two Port matching lower valve cover side plate in "A" or "B" style. Inquire.

                     

Valve Train: Modern 1.535" diameter, straight shaft, stainless steel, two per cylinder - eight per head installed. Heads are ready for no-lead gas.

EXHAUST VALVES: are in the stock position in block. Stock sizes work well. Larger 1.730" exhaust valves can be use to great advantage. Large exhaust valves are not in the kit and if used will require additional block machining. Consult with your engine builder about suitability for your block.

Rocker Arms:

 

Our NEWEST UP GRADE: cast DUCTILE IRON Rocker Arms. These new arms have been developed to include full adjustability for both Intake Valves at the arm and are loaded with two needle bearings each. Sold separately for owners of older models.

ROCKER RATIO is  approximately 1.04:1, which is nearly equal. Shaft center to adjuster screw center = 1.320" and Shaft center to pushrod pad center line = 1.275.

Rocker Stands: are 356-T6 aluminum. These precision machined stands are an exact replacement for all original and repro Two Ports. They feature trick internal oil pressure lines and rocker shaft lockers.

 

Rocker shafts: are hardened tool steel precision machined, pre-drilled for oil pressure and a special locker groove. Made by us.

Valves: Modern straight stem 1.53". 8 installed in the head

Springs: Model A, eight per head. Normal stock tension.

Keepers: Modern 2 pc lockers.

Valve Guides: Modern one pc solid cast iron

Valve Plugs:

All heads are now supplied with four billet aluminum Valve Plugs. These are to be press fit into the valve guide and old valve seat of your block. The final installation is usually done by a machinist, at the time the block is decked. The Plug should be either dead flush with engine deck (machined with deck) or "just" below the deck with engines that have already been decked. These optional use Plugs improve oil return and give additional gasket support. When rebuilding the engine we recommend that hardened valve seats be cut for all 8 seats, but installed in the exhaust only. The new Valve Plug is then machined to fit the new valve hole and pressed in.

Valve Covers:

Our new tooling has the name "TWO PORT RILEY" de-bossed on the top in large clear letters that will not polish off. The gasket supplied is a quality "U" channel neoprene gasket. The covers are 3/8" higher than stock cover to give better clearance to the rockers.

Spark Plugs: Spark plug holes bored and threaded for 14mm, 3/4" reach, flat seat, gasketed plugs. Not supplied. Start with a cold plug.

Studs/Bolts: We supply 4 aircraft quality grade eight  "long" head studs with rolled threads and 10 grade 8 bolts. The very best and strongest.

Push Rods:

Adjustable solid push rods with 1/2" dia. adjusters. We make these from scratch. Our tappet seat bolts are supplied and screw into your "single locker" adjustable tappets.

Water Pump: Use the stock 1928 to 1931 Model "A" water pump with a "locating collar" installed on the shaft behind the fan hub. There is no shaft locator boss inside the cylinder head. This was done to improve water flow. Collars are available from most dealers. Most owners report their headís are running exceptionally cool and some have changed thermostats to rise the temp. OPTIONAL early Ford V-8 water pump adapters and water block off plates available (shown below).

Water Gooseneck:

Cast 356-T6 aluminum special fit around valve covers. Fits all years.

Distributor:

Each head is shipped with a "RILEY" Distributor Riser part, 356-T6 aluminum, fully machined and a longer distributor driveshaft. This extension will raise your Model "A" or "B" distributor up two inches so the stock "wing" caps and the Model "A" spark advance will clear the valve covers. Mallory, "FS Ignitions", magnetos and many other distributors with Model "A" machined shanks will fit. Distributor Riser must be sealed with silicone sealer between it and the head. No gasket, just a touch of sealer. A thin paper gasket can be fabricated if desired.

Distributor Drive Shaft: The shaft has been made approximately 1/4" too long. This is due to variances at the drive gear assembly, engine deck machine depth and other factors. Simply grind an equal amount off each end to get to the correct length for your engine.

Oil Pressure: Each head is "trick" machined to feed low pressure oil to the head and rocker system. Oil returns to the engine block via the pushrod channels. This will effectively oil the R2P valve train along with the low pressure feed to the rocker shafts and rocker arms.

Shipping: Each head will be assembled and packed for safe shipment by UPS. Shipping/crating costs are  $100.00  (USA). Overseas shipping available.

We stock replacement PARTS for all original and repro Riley Two Ports.

 


DEPOSIT $1,500.00

PRODUCTION Started SEPTEMBER 2013

DELIVERY SCHEDULED APRIL 2014

THERE IS A $200 CANCELLATION FEE IF YOU CHICKEN OUT.

IF WE CAN NOT PRODUCE THEN YOUR DEPOSIT WILL BE RETURNED IN FULL (NO INTEREST). ALL FUNDS ARE HELD IN ESCROW. AFTER CASTINGS ARE ORDERED SEPTEMBER 1, 2013  NO REFUNDS CAN BE MADE.

Every Buyer Must Sign a "Release and Hold Harmless Agreement" before head will be shipped. 

Copy sent by email or mail on request.

WARRANTY: Yapp Studios, Inc. warrants for thirty (30) days that the workmanship and materials of the Riley Two Port are as represented. If the head is modified in any way whatsoever the warranty is null and void. When you receive your head, inspect it, if it does not appear correct, call us and we will arrange for a full refund, repair or exchange. This product makes increased horse power and is used as an automotive racing product, therefore no other warranty is expressed or implied. The warranty is non transferable. Having said that, be assured that we stand behind all our products and will get you on the road.

***Horse Power varies with equipment used and to the extent that "speed secrets" have been applied. We have reports of HP ranging from a strong 80 HP out of the box, to a screaming 125 HP all tricked out. Tests were conducted on "rear wheel dynos" by customers, where a 25% loss of  HP is common, as compared to engines mounted on actual dyno stands. A properly set up Riley Two Port, on gas, using common tricks of the trade, should produce at least 105 hp on a dyno stand.

SCALDED DOG SPEED PARTS

513-724-0700

3860 CAIN RUN RD, BATAVIA OH 45103

(513) 724-0700 M-F 9am to 5pm - 24 hr

Fax (513) 724-0116

EASTERN TIME ZONE

  CLOSED WEDNESDAY AND WEEKENDS

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