Page 376 - 2018 Racecar Engineering Open Wheel Parts and Accessories Catalog

Water Pumps
Designed for racing and competition proven, every Stewart pump is serial numbered, documented, pressure tested, and run-in at 10,000
RPM. We stock Stage 1, 2, 3 and the top-of-the-line Stage 4 pumps.
Stage 1 Water Pumps Stage 4 Water Pumps
Pumps use new original equipment Stage 4 pump incorporates
iron castings that are machined all-new DRV-8 Series 8-Vane
and assembled to exacting CNC-machined 6061-T6 billet
standards. Pumps appear aluminum impellers and flows
stock externally and may be up to 41% more water at twice the
used with stock lines and brackets. Unlike stock pressure of traditional units, assur-
pumps, the Stage 1 has a precisely machined fan hub for perfect ing equal flow to left and right cylinder heads while
pulley alignment, high flow impeller, special water/anti-freeze com- consuming less horsepower. Has all the same features as Stage 3
patible seal assembly, and, on some Stage 1 models, a severe duty Pumps, plus a full one-year warranty.
3/4" ball/roller bearing. The Stage 1 has a full one year warranty.
Part No. Description
Part No. Description Small Block Chevrolet
Small Block Chevrolet STE42200 Pre-1969 Short, 3/4" Shaft, Adjustable - (5.625")
STE12103 Pre-1969, Short, 5/8" Shaft - (5.625") STE42203 Pre-1969 Short, 3/4" Shaft - (5.625")
STE12203 Pre-1969, Short, Severe Duty 3/4" Shaft - (5.625")
STE43103 1971-82 Corvette, 3/4" Shaft - (5.795")
STE13103 1971-82 Corvette, Severe Duty 3/4" Shaft - (5.795")
STE13113 1969-86 Long, 5/8" Shaft - (6.932")
Pro Series Water Pump
Stage 2 Water Pumps STE50005
Stage 2 pumps are inexpensive, but Engineered exclusively for
very effective and include exclusive small block Chevy racing ap-
Stewart features like 356-T6 plications, Pro Series Water
heat-treated, ribbed aluminum Pump utilizes a Twin Volute
castings, extra-rigid cam stops housing and replaceable water
with exclusive 5/8" or 3/4" ball/roller pump cartridge, which provides
bearings, maximum-flow, close-tolerance a perfectly balanced and unsurpassed flow of coolant to both sides
nodular iron impellers, machined fan hubs with dual bolt patterns, of the block. Super efficient pump uses only two horsepower, while
and water/anti-freeze compatible seal assemblies. delivering 50 GPM of flow. Pump, which is 5.825" high, includes a
heavy duty 3/4" shaft, 1/2" billet steel hub, -16AN side outlets and
Part No. Description
Small Block Chevrolet stock mounting holes.
STE22103 Pre-1969, Short, 5/8" Shaft - (5.625")
STE22203 Pre-1969, Short, Severe Duty 3/4" Shaft - (5.625")
STE23103 1971-82 Corvette, 3/4" Shaft - (5.795")
STE23113 1969-86 Long, 5/8" Shaft - (6.932")

Performance Forged Pistons
SRP pistons, manufactured by JE, are “mak-
ing performance affordable”. SRP specific
designed forgings eliminate several phases of
the manufacturing process, saving time and
cutting costs with high volume production. All
Professional Piston And Ring Kits pistons are machined to accept 1/16" top, 1/16"
Revolutionary piston kits have modern racing second and 3/16" oil rings. Sold in sets of eight,
pistons with low friction metric ring sets. Kits with wrist pins and double Spiro Locks.
include lightweight forged side relief Bore Rod Dish/Dome Comp. Comp.
(FSR) pistons, wrist pins with Part No. Size Stroke Length Volume Height Ratio
carbon steel wire locks, and JE Small Block Chevy
Pro Seal premium piston ring High Compression Domed Pistons
set, complete with 1.2mm pre- SRP140678 4.030" 3.480" 6.000" 11cc 1.260" 12.9:1
mium steel top rings, 1.5mm Napier SRP140348* 4.030" 3.750" 6.000" 7cc 1.125" 12.9:1
second rings and 3.0mm standard tension oil rings. SRP140679 4.040" 3.480" 6.000" 11cc 1.260" 13.0:1
SRP140349* 4.040" 3.750" 6.000" 7cc 1.125" 12.9:1
Bore Rod Dish/Dome Comp. Comp.
Part No. Size Stroke Length Volume Height Ratio SRP140680 4.060" 3.480" 6.000" 11cc 1.260" 13.0:1
Small Block Chevy SRP140350* 4.060" 3.750" 6.000" 7cc 1.125" 13.0:1
High Compression Domed Pistons SRP142021 4.155" 3.750" 5.700" 4cc 1.425" 12.9:1
SRP271058 4.030" 3.750" 6.000" 7cc 1.125" 12.9:1 SRP142024* 4.155" 3.750" 6.000" 4cc 1.125" 12.9:1
SRP271059 4.030" 3.480" 6.000" 11cc 1.260" 12.7:1 SRP142035 4.165" 3.480" 6.000" 9cc 1.260" 13.0:1
SRP271066 4.155" 3.750" 6.000" 4cc 1.125" 13.0:1 SRP142025* 4.165" 3.750" 6.000" 4cc 1.125" 12.9:1
Note: Compression ratios are based on the following combustion Notes: Compression ratios based on the following combustion chambers:
chambers: SB Chevy: 64cc SB Chevy: 64cc * Oil rail supports included.

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