Block Porting
Every block is cut to meet the customer's needs. For example, I wouldn't "Hog" out a 260hp motor on a heavy lake type boat and kill all the torque. And you wouldn't just skim a light race boat back half and leave potential untapped power. At JSRE, we know what works. We do not experiment on your motor! Port 260hp Motor to Drag Specs ........$500.00
Port 300hp Drag Motor ......................$400.00 |
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 Reed Plate(s) Cutting
Have you ever looked at the way your 2.5 feeds with air through the intake plenum? It feeds in a straight line. Cylinders number 6, 5 and 1, 2 are always robbed of air. Let the pros at JSRE angle cut your intake plate(s) to help this problem and pick up 200 to 300 rpms. Angle Cut Intake
Plates........$ 55.00 |
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Reed Cages Sealing Rings Honing
Let JSRE lap your reed cages on our Lap Master to make reeds seal better and extend their lifespan. Stop letting your bottom-end horsepower leak back into your intake area. JSRE also laps your sealing rings to eliminate crank drag. Lap Reed Cages (set of 6)...........$60.00
Lap Sealing Rings (set of 6)........$60.00 |
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"Dry Stacking" Exhaust
JSRE reroutes the water from your 2.5. Your motor will get rid of spent water through 4 hoses instead of 2. We reroute water away from passing across the tuner area, and send it to the water pump area via tubing. This has made a difference in the motor's ability to draft or scavenge. Dry Stack Tuner Adapter........$100.00 |
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Tuner Modifications
Every tuner modification will be different according to the application. (Modification of motor, weight of boat, etc.) Modify Core Tuner........$100.00 |
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Down Housing (SS New Style)
To keep your exhaust from making an "L" when leaving your motor, JSRE machines a slot in the bottom of your down housing to make expelling exhaust easier. It makes for easier breathing, too! Cut Slot in SS Down Housing........$65.00 |
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Down Housing (Old Style)
These units need above water exhaust relief for max launch power. JSRE drills holes above tuner in housing and inserts 6061 aluminum tubing. We then weld it to gusset the hole. Without the tubing your housing will break. Cut Holes and Gusset Down Housing........$150.00 |
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Lower Unit Modifications (Paddle Style)
The offshore housing on the new style gear cases are designed for turning, not speed or E.T. Allow JSRE to cut down and thin your skeg to an "Allison" cut like the one that is so popular with the drag race crowd. We can also cut your torque tab and install a torque tamer tab to help with steering torque. This is good for 2 to 3 MPH! Labor for Cutting Down Skeg and
Welding........$ 125.00
Torque
Tamer.............................................................$30.00 |
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Mercury Connecting Rods
JSRE will lighten and strengthen your rods by cutting the cast flashing off the side beam area, thus eliminating the tendency to crack and break under RPM stress. All rods are digitally balanced. We check for rod
stretch and straightness. Also, we check the rod bolts to prevent bolt failure which can be
disastrous to your high dollar motor. Lighten and Balance (set 6) Rods Small...........$150.00
Lighten and Balance (set 6) Large..............$175.00 |
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Pistons
Pistons are cut on Super Indexer to insure consistency. They are cut and balanced with digital accuracy. No hand work! Pistons are given the JSRE angle cut at the intake ports to enable better top-end breathing, plus all sharp edges are chamfered to prevent cracking. A 45 degree bevel is put on the crown to prevent detonation. Wrist Pin holes are honed to ensure perfect fit. We perform a crack inspection and return to the customer or we will install it back on the rod for assembly. Total Labor With Core (set of 6)..........$150.00 |
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Light Weight Wrist Pins
JSRE offers light wrist pins for your 2.5 Mercury motor. The stock pins are 107.5 grams. JSRE pins are 74 grams and stronger than stock with a 65 Rockweld hardness
(Indestructible!) What better way to reduce reciprocating weight! Light Wrist Pins
(Without
Core)..........$200.00
Light Wrist Pins ( With
Core)..........$225.00
(With or without stuffers)
(Stuffed Wrist Pin shown above, -- Cutaway view of Stuffed Wrist Pin below) |
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 Merc
Flywheel Puller
JSRE offers
new style flywheel puller with bearings to protect your crank shaft. A
must for the do-it-yourselfer!Flywheel
Puller..........$75.00
Flywheel Puller with
Lifting Ring Attachment
..........$90.00 |
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Surge
Tanks
JSRE offers 2
lb. billeted aluminum tanks to keep your motor from going lean due to
large volume tanks and low fuel levels. Don't destroy a motor, get one
today!
- 3/8" NPT in, and 3/8"
NPT out
- 1/4" return line on top
Surge Tanks..........$135.00
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