After extensive research and development we finally established the
optimum in synchromesh style gears available which were first introduced to the market late 2002.
We have incorporated a large tooth profile throughout all gears maintaining reliability and efficiency. 1st gear is similar in size to 1st used in our GTIR dog gearset which means good news for those people that love to really take off.
The entire gear train has been made with a helical cut to reduce noise and increase strength.
As can be viewed, 2nd gear has the largest tooth profile possible with respect to efficiency and reliability.
3rd and 4th have also been generated with a large tooth profile and are the same as in our half dog gearsets.
In order to supply our clients with only what they need and not increase the cost unnecessarily we supply the gearset with 1st to 4th since the standard 5th gear is sufficient, but for those people that would like to change 5th to a different preferred ratio or just for piece of mind, 5th is also available if need be.
PAR has designed the gearset in such a way that needle roller bearings are used on 3rd, 4th and 5th driving gears opposed to standard OEM which run straight on the shafts.
The gearset will fit the standard housing with no modifications .
The beauty of the synchromesh GTIR gearset is that it requires no maintenance and special driving style which is the same as the standard OEM gearset. What the biggest difference is that you don't need to worry about breaking or shredding gears as long as you have less than 450 break hp.
GTIR Dog Change
The GTIR 1/2 dog gearset is made from EN36A case hardening alloy steel which is hardened and tempered through a special heat treatment process after the manufacturing stage and is a huge step up for the performance freaks who have screwed a lot more power out of their GTi-R engine. This gearset is suited for drag racing, circuit racing, rallying and hi performance use. If you like 'launching' your car off the line then this gearset will take all the punishment. The benefit of this 1/2 dog gearset is that the gears are wider than standard (to increase strength) with a larger tooth profile meaning that there is a lower number of teeth and each tooth is a lot thicker (to increase strength even more). Lightning fast gearchanges can be made without losing valuable time with this 1/2 dog gearset. This equates to the most power capable racing gearset available. The dog gears will be rated at around 650hp.
A 1/2 dog gearset is suited for people who want to launch off the line in anger while making lightning quick gearchanges from 1st to 2nd, just like a proper race car. A audible metallic 'clunk' might be heard when changing fast, but the engine will be a lot louder. With a little practice a GTi-R fitted with a 1/2 dog gearset will be no extra hassle being used as a regular street driven car. If you are serious about the horsepower output of your GTi-R, then this is the gearset to get. The dogs on this gearset were designed for maximum strength and durability, the end result is the biggest dogs that could possibly be made.
On the synchro gearsets there is a large tooth profile throughout all gears maintaining reliability and efficiency.
We have increased the width of 3rd gear to give it that extra strength with respect to efficiency and reliability, all gears have the largest tooth profile possible. This gearset will fit in the original housing with no modifications, original bulk rings and sliders and hubs will be used. Customers need to be aware that although they have a tougher gearsets it does not mean they can be more aggressive on the gearstick and damage the bulk rings and shift forks etc. All components are machined out of billet steel, the best of materials, the gears are made from an alloy, high tensile, chromoly tool steel designated by the code EN36A. Heat treatment involves case hardening which means the core is strong but still ductile and the case is hard to handle meshing.
SENTRA/SSS/SR20DET DOG CHANGE
The FWD SR20DE full dog box is the thing to have when you have turboed the N/A SR20DE or have installed a U12 Bluebird/U13 Bluebird/GTi-R turbo engine into your FWD Pulsar, Sentra, SE-R, NX Coupe (or anything with a FWD SR20DE). The dog gearset is made from EN36A case hardening alloy steel which is hardened and tempered through a special heat treatment process after the manufacturing stage. This is a dog (1st to 4th gear) gearset with straight cut gears and will handle all the power your engine can supply. The dog gears are rated at around 600hp.