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Spec II's forte resides,
among other things, in boosting your motorcycle's power through
porting. We offer many stages of porting, and we can also perform
various maintenance tasks to your crankshaft. Cylinder boring is
also offered, as is a Big Bore kit. We can even clean your Power
Valve assembly!
2-Stroke
Porting - 4-Stroke Porting - Crank
Work - 2-Stroke Cylinder Work - 4-Stroke
Cylinder Work - Head Work - Other
PORTING
STAGES (2-Stroke)- The following porting services are the result
of extensive Racing & Development Programs. All porting stages
start with aligning and balancing of the transfers. We have found
this to be the only way to produce consistently high horsepower
engines that also have wide, flexible powerbands. Each stage indicates
an increase in the numer of ports wrked on. Also, for RD400, Stages
II through IV include a spacer (and the machining it takes to make
it work) and machining on the piston. It is important that we know
the application the engine is to be used on.
| Part
# 150LRZ - Stage I Porting. Power increases in the mid- to upper
power range. |
$159.94
|
| Part
# 225LRZ - Stage II Porting. Adds to power gained in Stage I.
Broadens powerband making the machine easier to ride. |
$249.90
|
| Part
# 300LRZ - More power for you addicts out there. |
$324.87
|
| Part
# 400LRZ - Stage IV Porting. Primarily designed for racing.
Achieves the ultimate in horsepower output.
|
$399.84
|
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PORTING
(4-Stroke)- All porting represents the results of many hours of
testing and flow bench work. The testing represents both road racing
and dragstrip participation.
| 4
Cylinder Head/8 Valves : Port & Polish |
$395.00
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| 4
Cylinder Head/16 Valves : Port & Polish |
$495.00
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| Competition
Valve Job : 8 Valves |
$115.00
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| Competition
Valve Job : 16 Valves
|
$175.00
|
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CRANK
WORK - LABOR : Crank Lightening reduces the weight of the crankshaft
13%. Spec II machines special aluminum plates or bars (depending
on the crank) to maintain crankcase compression at an optimum level.
This machining results in greater acceleration at no expense to
the powerband.
| Crankshaft
Rebuilding - 2-Stroke Twin |
$99.00
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| Crankshaft
Rebuilding - 2-Stroke Triple |
$150.00
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| Crank
Welding - Includes Truing After Welding |
$20.00
|
| Crank
Lightening - RD 400 '76-'78 Hardened Crank |
$168.00
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| Crank
Lightening - RD350 |
$108.00
|
| Crank
Stuffing Only |
$66.00
|
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CYLINDER
WORK : (2-stroke)
| Part
# 10BRZ : Cylinder Boring, Per Cylinder. (Includes port chamfering.)
Multiply X2 for price of complete top-end. |
$35.00
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| Part
# 15BRZ - Big-Bore (372cc). For RZ350 - Call for further details. |
CALL
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| RD350
Big-Bore - Call or Write for more details. |
CALL
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| Part
# 10PRZ - Remove, clean & assemble Power Valve. (Includes
both cylinders.) |
$49.94
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| RD400
Big-Bore (Call or write for more details) |
$102.00
|
| Barrel
Surfacing |
$35.00
|
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CYLINDER
WORK : (4-stroke)
| Next
Overbore (Clean-Up) - Each Hole |
$28.00
|
| Large
Overbores (Per .040" Cut) |
$2.50
|
| All
4 Cylinders - |
$90.00
|
| Bore
Blocks & Surface for Resleeving |
$90.00
|
| XS750
to 900/912 (Sleeves Installed & Surfaced) |
$132.00
|
| Barrel
Surfacing |
$35.00
|
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HEAD
WORK :
| 2-Stroke
- Each |
$30.00
|
| CC
chambers to match exhaust port height |
$18.00
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| 4-Stroke |
$40.00
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OTHER
:
| Assemble
Heads - Seals Extra |
$40.00
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| Carbon
Removal |
$30.00
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| Cam
Cut - Machining of the head to clear big cams |
$35.00
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