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Old 10-25-2015, 11:34 AM   #1
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Default Quaife Sequential for NA & NB

Quaife came out with this last year. https://shop.quaife.co.uk/gearboxes?...e=13&vehicle=4 They offer 4 different options for the NA/NB. The 375bhp limit it's somewhat restrictive though. The weight looks to be the same as a stock 6 speed.

The price is pretty tough to swallow. After seeing my friends BMW converted to sequential I had to peak at our options. One can only dream. :-)

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Old 10-25-2015, 11:56 AM   #2
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I'd like to get one for the OGK. We will see how the budget looks in 6 months
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Old 10-25-2015, 12:09 PM   #3
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Interesting that they measure capacity in horsepower. Torque is what kills things.
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Old 10-25-2015, 01:22 PM   #4
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Interesting that they measure capacity in horsepower. Torque is what kills things.
I was thinking the same thing. The HP may still create heat though. Maybe that's why they rate it that way.
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Old 10-25-2015, 01:22 PM   #5
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I'd like to get one for the OGK. We will see how the budget looks in 6 months
That would be epic!
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Old 10-25-2015, 02:02 PM   #6
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Originally Posted by k24madness View Post
I was thinking the same thing. The HP may still create heat though. Maybe that's why they rate it that way.
^ This.

Yes, it's possible to instantly shatter a gear by applying eleventeen-hundred ft/lbs of torque to it with sticky tires and an adequate rear suspension.

But the track crowd, who seem to be the ones killing 6-speeds most frequently, have demonstrated that it's not hard to do so with levels of torque and HP comparable to what many of us run reliably on the street through 5-speeds. The difference would appear to be that they are producing said HP on a nearly continual basis for tens of minutes or even hours, rather than in short bursts of a few seconds at a time.

It's this continual HP production which leads to the generation of heat in the gearbox. Heat softens things, reduces the effectiveness of the lubricant, changes mechanical tolerances, etc.
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Old 10-25-2015, 03:17 PM   #7
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It's rough rating anyway. When it breaks you have applied too much.

But just assuming the rating is focused around a 8-8.5krpm engine, not a 5.5krpm 7L engine.
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Old 10-25-2015, 03:30 PM   #8
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Wonder how much longer a 6 speed would last with a transmission cooler.
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Old 10-25-2015, 04:19 PM   #9
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Quote:
Originally Posted by aidandj View Post
Wonder how much longer a 6 speed would last with a transmission cooler.
Asking the right question. Though "how much" is about impossible to quantify right now but that is the big question.

How about a slightly different question: Would a 6 speed last ANY LONGER with a transmission cooler?

I would say yes. There are high powered cars that are stock with a warranty that have transmission cooler.

I made a transmission cooler thread a while back, it's somewhere on here.
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Old 10-25-2015, 04:22 PM   #10
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Wonder how much longer a 6 speed would last with a transmission cooler.
I think a cooler would extend the life for sure. I also think a traditional trans mount would help as well. I can't help but think the case is twisting slightly when things get hot. Would love to hear some thoughts from BBundy or other engineers.
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Old 10-25-2015, 08:01 PM   #11
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I dont know about the qbe60g but the 69g comes with an internal spray bar.

Makes a huge difference.

For my K24 build, I chose to go with the S2K trans for a variety of reasons, one of which is down the road Id like to either replace the gearst or go with a stand alone dog box.

D
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Old 10-25-2015, 08:48 PM   #12
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Old 10-26-2015, 02:03 AM   #13
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Last edited by k24madness; 10-28-2015 at 11:10 AM.
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Old 10-26-2015, 08:45 AM   #14
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nom nom that noise!!!
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Old 10-26-2015, 10:49 AM   #15
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Holy ****, yes.
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Old 10-27-2015, 10:00 PM   #16
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Quote:
Originally Posted by k24madness View Post
That would be epic!
That was my thought. Built whammy engine. C30-94 Rotrex on corn. No roof, maybe 1750lbs, many aeros. 15x10 6UL's and 245/40/15 R7's and the pile of 245/580R15 R80's I won a few years back. Much like the 200whp ITB motor we just built, it has no logical reason to exist and won't make me any money. But if I can make it happen, I will. Figure 15s under SM lap records or thereabouts.
Epic is a good word for it.
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Old 10-27-2015, 10:14 PM   #17
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Do it for the grins? And to set records?
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Old 10-28-2015, 01:33 AM   #18
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C30-94 Rotrex on corn.
Epic is a good word for it.
That was the other half of my dream.

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Old 10-28-2015, 01:35 AM   #19
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Do it for the grins? And to set records?
Someday my wallet will match my ambitions.
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Old 02-19-2016, 12:31 AM   #20
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In light of Emilio taking the plunge I am bumping this thread back to life.

I am also going to drink the cool aid in late March. Honestly it's not that expensive after selling off both of my 6 speed transmissions. Money is finally starting to loosen up so this should be a good year for racing.

I am lost on how to handle the flat shift and auto blipping with the MS3. I am hoping the ECU supports that. Thoughts on the matter would be appreciated.
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