STRENGTHENED TIMING BELT  

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.

SECTION
STD
TOMEI
Rubber
H-NBR
High Saturation H-NBR
Cable Core
Glass
High Strength Glass
Belt Surface
Nylon
Kevlar + Nylon
LIFE COMPARISION
Cutting Prevention
3 - 4 x more
Heat Proof
2 - 3 x more
Crack Prevention
3 - 4 x more
Wear Proof
2 - 3 x more
* When Compared WithThe Standard Belt

STRENGTHENED BALANCER BELT  
Lancer evolution is equipped with the balance shaft, which is driven by crankshaft. However, by use of the severe situation in tuning engine, cutting or wear of the balancer belt occur and serious breakage may be caused. TOMEI strengthen balancer belt improves intensity sharply by using same Kevlar fiber as timing belt to the surface of the belt, and prevents cutting and wear beforehand.

STRENGTHENED TIMING BELT  

PRODUCT
APPLICATION
PART NO.
MSRP
NOTES
Strengthened timing belt
RB26,RB25,RB20
151051
$190.00
 
VG30DE(T)(TT)
151073
-
DISCONTINUED
4AG
151079
-
DISCONTINUED
EJ20#
EJ25#
DOHC
151084 $250.00
*Non compatible 1.5L/1.8L/SOHC


4G63 STRENGTHENED TIMING BELT  

PRODUCT
APPLICATION
PART NO.
MSRP
NOTES
Strengthened
Timing Belt
EVO I- VII
--
--
DISCONTINUED

BELT GUIDE  

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.



Part Name
Application
Part No.
MSRP (USD)
Kit Contents
 
Timing Belt Guide
EJ20#
EJ25#
191263
$50.00
* Belt Guide x1
* Bolt x2

 


 
VALVE GUIDES  
 
Material:@5191iCn-Sn-P alloyj

Tensile strength:@590`685im/o2j

Hardness:@180`230igaj

APPLICATION
IN/EX
PART NO.
MSRP (USD)
NOTES
VR38DETT
SET
163303
$480.00
Made from
Phosphor
Bronze
(PBB)
IN Only
161305
$20.00
EX Only
161306
RB26DETT
SET
163046
$480.00
IN Only
161093
$20.00
EX Only
161094
RB25DE(T)
SET
163047
$480.00
IN Only
161093
$20.00
EX Only
161095
RB20DE(T)
SET
163047
$480.00
IN Only
161093
$20.00
EX Only
161095
SR20DE(T)
(R)PS13
SET
163048
$320.00
IN Only
161096
$20.00
EX Only
161098
SR20DET
S14,S15
SET
163049
$320.00
IN Only
161097
$20.00
EX Only
161098
CA18DE(T)
SET
163304
$320.00
IN Only
161307
$20.00
EX Only
161096
4B11
SET
163302
$320.00
IN Only
161304
$20.00
EX Only
4G63
SET
163301
$320.00
IN Only
161302
$20.00
EX Only
161302
EJ205
EJ207
EJ255
EJ257
SET
163300
$320.00
IN Only
161300
$20.00
EX Only
161301

We chose to use Phosphor Bronze (Cn-Sn-P alloy) to make our Valve Guides, 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 , these engines now experience more extreme heat conditions. These conditions will increase the deterioration rate on these valve train related components. The Phosphor Bronze material has exceptionally lower friction and the best possible clearances can be maintained, which will reduce the stress on the valve train assembly, prevent seizures and cracking under high stress loads.

Still since the product will be used for extreme conditions, it will still require additional regular maintenance and periodical checks. The product can wear out faster under certain conditions. Some examples of the abnormal conditions are as follows.

The rocker arm type assemblies will apply more lateral pressure, which will increase the wear rate. If the stem wall of the valve is rough, it will also contribute to the increased wear rate.

Using high lift, aggressive camshafts will also increase the wear rate.

Excessive buildup of carbon will also hinder performance and increase wear rate. When there's a small opening at the end, it will increase the carbon buildup rate as a funnel effect.

The results from Valve Spring surging will cause the Valve to move on an angle. This will cause both ends to open up and create deformation. Then carbon can enter the valve guides more which will increase the wear rate.

A defective seat cut. When the seat cut's centerline across the main 45 degree face is offline from the valve stems centerline by more than 0.01mm, this can cause increased abnormal wear rate.

If the clearance is not within the correct 0.03-0.04mm range. The Valve will rub against the guides inner wall, this degree angle in relation to the seat cut will cause it to shift by 0.01mm more than the clearance values. The guide will take the lateral pressure point and open up the opening. The buildup of carbon will increase in the newly formed gaps.

A worn out used Valve. It's possible to cut down by using the part that has not worn out the stem when changing to a high lift cams. The guides can wear out when the inappropriate clearances are made. (About 0.01mm out of clearance).

The Valve design is defective. The difference from the dilatability and the guide being worn out abnormally is when the valve that is made with different alloys, will contribute with a faster deterioration.


 
BERY-RINGS  

APPLICATION
IN/EX
PART NO.
MSRP
MATERIAL
NOTES
VR38DETT
SET
163103
$720.00
Beryllium
 
IN
161305
$30.00
 
EX
161306
 
RB26
DETT
SET
162001601
$720.00
IN:12, EX:12
IN
161001
$30.00
 
EX
161002
 
SR20
SET
163100
$480.00
 
IN
161102
$30.00
 
EX
161103
 
4B11
SET
163102
$480.00
 
IN
161106
$30.00
 
EX
161107
 
4G63
SET
163101
$480.00
IN:8, EX:8
IN
161104
$30.00
 
EX
161105
 
EJ205
EJ207
EJ255
EJ257
SET
162010
$480.00
 
IN
161075
$30.00
 
EX
161076
 

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.


OTHERS  

PRODUCT
APPLICATION
TYPE
PART NO.
MSRP
NOTES
Retainer
L6
 
13209R501
--
EChrome-moly(SCM)20g
EValve spring lenghth
1.5mm prolonged
Rocker guide
L6
4.5
13218R501
--
Chrome-moly(SCM)
5.0
13218R502
--
Chrome-moly(SCM)
Lightweight
push rod
A12
 
13238R000
$13.00
 
A14,15
13238R011
$13.00