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Although the timing belt is a common part of the engine, not all OEM and aftermarket timing belts are designed to be used on highly tuned turbo powered engines. The durability of the timing belt is greatly reduced with performance engines running at high RPM with aggressive camshafts, increased torque coming from the valve springs, extreme heat conditions from the larger turbos and more.
The TOMEI POWERED strengthened timing belt has been designed and manufactured with a Kevlar fiber (Aramid) belt surface, H-NB rubber and the glass cable core for increased tensile strength and durability. This results in a highly durable timing belt that will ensure to keep everything in check even under extreme conditions. |
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SECTION |
STD |
TOMEI |
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Rubber |
H-NBR |
High
Saturation H-NBR |
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Cable
Core |
Glass |
High
Strength Glass |
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Belt
Surface |
Nylon |
Kevlar
+ Nylon |
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LIFE COMPARISION
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Cutting
Prevention |
3
- 4 x more |
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Heat
Proof |
2
- 3 x more |
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Crack
Prevention |
3
- 4 x more |
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Wear
Proof |
2
- 3 x more |
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* When
Compared WithThe Standard
Belt |
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| PRODUCT |
APPLICATION |
PART NO. |
MSRP |
NOTES |
| Strengthened
timing belt |
RB26,RB25,RB20 |
151051 |
$190.00 |
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| VG30DE(T)(TT) |
151073 |
- |
DISCONTINUED |
| 4AG |
151079 |
$160.00 |
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EJ20#
EJ25#
DOHC |
151084 |
$250.00
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*Non compatible 1.5L/1.8L/SOHC
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4G63
STRENGTHENED TIMING BELT |
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PRODUCT |
APPLICATION |
PART
NO. |
MSRP |
NOTES |
| Strengthened
Timing Belt |
EVO
I- VII |
-- |
-- |
DISCONTINUED
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SECURELY
HOLDS DOWN THE LENGTHY EJ TIMING
BELT TO PREVENT PULLEY DISENGAGEMENT.
Horizontally
opposed engines combust structurally
at 180 degrees; increasing the
chances of the camshafts not
performing at their maximum
lift. Because of this, installing
high lift camshafts in these
engines may create unnecessary
belt vibration leading to the
pulley spinning off the rotating
assembly. Without the pulley
in its rightful place, the valves
and the pistons are guaranteed
to make contact in this situation.
The manufacturer had created
a component to eliminate this
costly damage, called the belt
guide. However, this belt guide
is constructed from thin sheet
metal which lack strength and
rigidity with overall attributes
that simply cannot securely
maintain the belt and pulley
at times.
Tomei Powered has constructed
a beefy belt guide cut straight
from aluminum with an extended
length to securely apply more
tension to the timing belt.
This product comes in handy
when immediate changes in torque
are experienced by the engine,
eliminating belt whip. The Anodized
surface creates a smooth and
precise belt track as well.
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| Part
Name |
Application |
Part
No. |
MSRP
(USD) |
Kit
Contents |
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| Timing
Belt Guide |
EJ20#
EJ25# |
191263 |
$50.00
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*
Belt Guide x1
* Bolt x2 |
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APPLICATION |
IN/EX |
PART NO. |
MSRP (USD) |
NOTES |
RB26DETT |
SET |
163046 |
$480.00
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Made from
Phosphor
Bronze
(PBB)
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IN Only |
161093 |
$20.00
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EX Only |
161094 |
RB25DE(T) |
SET |
163047 |
$480.00
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IN Only |
161093 |
$20.00
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EX Only |
161095 |
RB20DE(T) |
SET |
163047 |
$480.00
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IN Only |
161093 |
$20.00
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EX Only |
161095 |
SR20DE(T)
(R)PS13 |
SET |
163048 |
$320.00
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IN Only |
161096 |
$20.00
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EX Only |
161098 |
SR20DET
S14,S15 |
SET |
163049 |
$320.00
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IN Only |
161097 |
$20.00
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EX Only |
161098 |
4B11 |
SET |
163302 |
$320.00
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IN Only |
161304 |
$20.00
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EX Only |
4G63 |
SET |
163301 |
$320.00
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IN Only |
161302 |
$20.00
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EX Only |
161302 |
EJ205
EJ207
EJ255
EJ257 |
SET |
163300 |
$320.00
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IN Only |
161300 |
$20.00
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EX Only |
161301 |
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We decided to make our Valve Guides from Phosphor Bronze (Cn-Sn-P alloy) for its highly tensile and superior heat transferring ability which is vital in high power and high RPM outputting engines. Since race engines these days require more power at higher RPM use with leaner AFR mixtures, these engines now experience more extreme heat conditions which risk with the rapid deterioration on these valve train related components. The Phosphor Bronze material has exceptionally lower friction and the best possible clearances can be maintained which will in effect reduce stress on the valve train, prevent seizures and cracking under high stress loads.
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| APPLICATION |
IN/EX |
PART
NO. |
MSRP |
MATERIAL |
NOTES |
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VR38DETT |
SET |
163303 |
$720.00 |
Beryllium |
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IN |
161305 |
$30.00 |
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EX |
161306 |
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RB26
DETT |
SET |
162001601 |
$720.00 |
IN:12,
EX:12 |
| IN |
161001 |
$30.00 |
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| EX |
161002 |
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SR20 |
SET |
163100 |
$480.00 |
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IN |
161102 |
$30.00 |
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EX |
161103 |
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4B11 |
SET |
163102 |
$480.00 |
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IN |
161106 |
$30.00
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EX |
161107 |
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4G63 |
SET |
163101 |
$480.00 |
IN:8,
EX:8 |
IN |
161104 |
$30.00 |
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EX |
161105 |
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EJ205
EJ207
EJ255
EJ257 |
SET |
162010 |
$480.00 |
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| IN |
161075 |
$30.00 |
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| EX |
161076 |
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The function of which valve sheet
is asked, is maintaining air tightness
with a valve, and generally wear resistance
is required. However, with the engine
used by high rotation and high load,
the cooling performance of a valve
sheet becomes very important further,
and it is greatly concerned with an
engine output. When engine is high
rotation and high load, it is impossible
to achieve high output from the engine
if cooling performance of the cylinder
is low and knock limit does not become
high, since the temperature of the
circumference of a cylinder head rises
unusually. In racing engine that temperature
needed to be carefully controlled,
how much you can cool the circumference
of the sheet ring is the important
issue, and the technique of using
high heat conduction metal, such as
copper for a sheet ring, has been
taken. Copper has one of the highest
thermal conductivities through all
metal that enables receiving heat
from cylinder and cool it down quickly
by transmit the heat to the cylinder
head. (Degree of heat conduction:
1.silver, 2.copper, 3.gold, 4.aluminium,
... 10. cast iron - STD). We select
beryllium copper alloy (BeCu) that
can secure mechanical intensity most
in the copper alloy, which has ideal
fatigue resistance and wear resistance
while securing a preeminent cylinder
cooling performance. We named it "bery-ring"
and applied to the high performance
turbo charged engine. of market share
in the world with beryllium copper
so that we can offer this super-high
grade material beryllium in affordable
price.
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| PRODUCT |
APPLICATION |
TYPE |
PART NO. |
MSRP |
NOTES |
| Retainer |
L6 |
|
13209R501 |
-- |
EChrome-moly(SCM)20g
EValve spring lenghth
1.5mm prolonged |
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Rocker
guide |
L6 |
4.5 |
13218R501 |
-- |
Chrome-moly(SCM) |
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5.0 |
13218R502 |
-- |
Chrome-moly(SCM) |
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Lightweight
push rod |
A12 |
|
13238R000 |
$13.00 |
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A14,15 |
13238R011 |
$13.00 |
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