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khezz

Strongest sequential and why?

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With RBs pushing power further and further past 1000hp the demand on a gearbox is ever greater. 10 years ago a 1000hp transmission would be considered unbreakable. Now, with the cost of power parts going down and quality going up, the same person who could afford a sequential 10 years ago would be aiming for a number far higher then 1000hp. Keeping the cost aside and keeping dedicated drag boxes out of it (would love to see a thread on Liberty and Jericho transmissions)

Are transmission manufacturers keeping up?

What is the strongest sequential out there?

Why do you think/know so?

I am leaning towards the Hollinger. Been around for a very long time, very widely used in motorsports. Seems to be the only one with straight cut gears which eliminates sideload.

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The Holinger sequential for GTR uses helical cut gears, as does PPG and OS 88. Samsonas and Albins use straight cut 

I think most would agree Albins would be top of the food chain 

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You're right, back in the day, most of the GTR's though were either 2.6, or 2.8 only. RB30's werent THAT common.

I was in this exact boat when planning for a gearbox. I went with a 3.2 route. I sussed out all my options and talked to a tonne of people around what options there were for GTR's(excluding auto's here):

* Getrag 6 speed
* Gearset
* Sequential

Personally, I wanted peace of mind hence why I didnt go for a gearset or 6 speed. I mean, by the time you've done either of those 2 options you wouldn't get much change from 15K right? Plus, I dont know how long they would last with the fat torque of the 3.2...I also scoped out the sequentials out there, and in the end I went with the Albins as to me it seemed like the pick of the crop(Not saying the other Seq manufactures are shit, but its just my opinion). Plus, the Albins kit literally comes with everything minus the clutch.. no faffing around looking for tailshafts/transfer cases etc.

 

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I have a Holinger and love it, I bought it a few years about now circa 2015

 

however Albins and Samsona's seem to be the pick of the bunch these days.

 

Particularly now the albins can slot straight in without panel beating and the adjuster gear to tweak ratio's is very convenient and samsonas seems to put up with the beatings

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23 hours ago, Old man 32 GTR said:

Holinger sequential for GTR uses helical cut gears

I was under the impression you could get either, as the Holinger GRA-6N box for the group A R32 cars were straight cut, and was essentially the same ?

Anyway I would echo above - Albins all the way. Compared to Samsonas they have definitely more all round Motorsport proven track record within Australia and are completely Australian. In off road like 800hp+ buggies with monster torque that race here in the NT Finke desert race, there is basically only one manual box used that wins.

Albins

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I called them not that long ago to ask a few questions about their sequential, they never mentioned anything about the option for straight cut? But I didn’t ask either, but the standard sequential design is helical cut. 

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Standard option looks like it, as the pictures in Holinger GTR workshop manual are all showing helical gears on the disassembly except reverse. Main and counter shafts are both splined on gear so they definitely can do it. The earlier GTR boxes the Hollinger GRA-6N and HKS-GTR were only straight cut.

2012 GTR MANUAL.pdf

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Same experience as Moray - when I spoke to Holinger couple months ago - helical only.  Not sure why that is now - as I'm sure you could get them in straight cut years ago.

I went with the new Albins ST6-LP - i believe its the only one with a internal oil pump.!

 

14 hours ago, Old man 32 GTR said:

I called them not that long ago to ask a few questions about their sequential, they never mentioned anything about the option for straight cut? But I didn’t ask either, but the standard sequential design is helical cut. 

 

Edited by IMACUL8
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I am surprised no one has thrown their vote behind PPG or Osgiken considering how popar they are and OS88 being rated to 1500hp. 

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On 27/09/2020 at 3:26 AM, khezz said:

I am surprised no one has thrown their vote behind PPG or Osgiken considering how popar they are and OS88 being rated to 1500hp. 

Yeah nah.

  • Haha 1
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