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Max bhp/torque on standard 6 speed box?
#1324309
12/03/2012 06:36
12/03/2012 06:36
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Joined: Feb 2007
Posts: 3,486 London Tan
technics
OP
I need some sleep
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OP
I need some sleep
Joined: Feb 2007
Posts: 3,486
London Tan
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As above please, anybody have a rough idea?
Thanks.
Now in the 400+ bhp club!
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Re: Max bhp/torque on standard 6 speed box?
[Re: technics]
#1324341
12/03/2012 09:04
12/03/2012 09:04
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Biggenz
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Biggenz
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It all depends how you drive it I suppose. I know JBT will swear his magic diff works with the 6 speed, but what does he know. On serious note, I didn't want to take the chance which is why I gave up mine for an old 5 speed as you know. You planning something I don't know about? Lol
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Re: Max bhp/torque on standard 6 speed box?
[Re: technics]
#1324458
12/03/2012 16:38
12/03/2012 16:38
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Joined: Feb 2007
Posts: 3,486 London Tan
technics
OP
I need some sleep
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OP
I need some sleep
Joined: Feb 2007
Posts: 3,486
London Tan
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Biggenz, Still cant get this thought out of my head for getting to the 500 bhp, so have to do the sums properly before anything. So is JBT still on a 6 speed box with this new engine and figures? If yes, whats this diff, available to me/how much???
Nigel, im within those sort of figures now more or less, im just thinking if I go for more power, i.e 500-520ish bhp and roughly 380-400lb-ft.
So would I need to spend more money on smashing a 6 speed box, or just getting hold of a 5 speeder straight away? Even then, you dont know what your going to get with buying a second hand box.....
Now in the 400+ bhp club!
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Re: Max bhp/torque on standard 6 speed box?
[Re: technics]
#1324509
12/03/2012 20:28
12/03/2012 20:28
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tim42
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tim42
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I've just bought Nismo's 6 speed box to put in my old Scottie; nothing wrong with the original 5 speed, but the linkage is shagged and the six speed in my VT6 is SO good that I couldn't resist it.
I'm only looking to take the Scottie to Stage 2/3, so I hope there will be no problems. JBT has done some serious work on his transmission - I've seen him praying to his gearbox in the last week whilst facing Mecca (the local bookies)........
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Re: Max bhp/torque on standard 6 speed box?
[Re: technics]
#1324533
12/03/2012 21:21
12/03/2012 21:21
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crazylegs
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crazylegs
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Tim hes is still there praying lol hasnt move bless him.
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Re: Max bhp/torque on standard 6 speed box?
[Re: ]
#1324544
12/03/2012 21:54
12/03/2012 21:54
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tim42
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tim42
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Re: Max bhp/torque on standard 6 speed box?
[Re: technics]
#1324545
12/03/2012 21:59
12/03/2012 21:59
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crazylegs
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crazylegs
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No wonder hes got a bad back all this praying, but now we will see the JBT magic of always how long for the 6speeder????????
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Re: Max bhp/torque on standard 6 speed box?
[Re: ]
#1324554
12/03/2012 22:40
12/03/2012 22:40
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johnnybravoturbo
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johnnybravoturbo
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583bhp & 492lbs/ft so far on a 6 speed.
But the car feels very fragile,i'm waiting for something on the drive-train to snap imminently.
This current box i have really gone into depth with including replacing it for a custom diff,and replacing the bearings. I also set the pre-load very tight,so we will see if it lasts. Flea ran it at 1.8 bar several times on the road without issues.
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Re: Max bhp/torque on standard 6 speed box?
[Re: technics]
#1325501
16/03/2012 07:58
16/03/2012 07:58
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Joined: Feb 2007
Posts: 3,486 London Tan
technics
OP
I need some sleep
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OP
I need some sleep
Joined: Feb 2007
Posts: 3,486
London Tan
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So Tim, would that 5 speed box be for sale? Mileage?
Now in the 400+ bhp club!
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Re: Max bhp/torque on standard 6 speed box?
[Re: technics]
#1325507
16/03/2012 08:52
16/03/2012 08:52
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tim42
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tim42
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Sure will be; the car has done 115K, and it is the original box as far as I can make out. Scottie is off to Shepshed tomorrow. JBT is busy on the run-up to Spa, but should be available in the next week or three.
Tim
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Re: Max bhp/torque on standard 6 speed box?
[Re: technics]
#1325512
16/03/2012 09:10
16/03/2012 09:10
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Biggenz
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Biggenz
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Maurizio, you need to make sure it's the old style 5 speed, as the newer style has the same weak design as your 6 speed.
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Re: Max bhp/torque on standard 6 speed box?
[Re: technics]
#1325764
17/03/2012 05:58
17/03/2012 05:58
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Joined: Feb 2007
Posts: 3,486 London Tan
technics
OP
I need some sleep
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OP
I need some sleep
Joined: Feb 2007
Posts: 3,486
London Tan
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Ah, cheers Pero. Do you know what age/year I have to look at then?
Thanks Tim, but thats firstly, abit soon for me and secondly probably too many miles aswell, as if I do this its going to be for a 500bhp application...
Now in the 400+ bhp club!
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Re: Max bhp/torque on standard 6 speed box?
[Re: technics]
#1325848
17/03/2012 13:04
17/03/2012 13:04
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jonone
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jonone
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Re: Max bhp/torque on standard 6 speed box?
[Re: technics]
#1325877
17/03/2012 16:12
17/03/2012 16:12
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Joined: Jan 2006
Posts: 3,034 Sweden
Per
I need some sleep
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I need some sleep
Joined: Jan 2006
Posts: 3,034
Sweden
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Re: Max bhp/torque on standard 6 speed box?
[Re: Per]
#1327513
22/03/2012 13:19
22/03/2012 13:19
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Joined: Dec 2005
Posts: 3,158 Near Reading
JohnS
I need some sleep
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I need some sleep
Joined: Dec 2005
Posts: 3,158
Near Reading
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The more power you have the more you need to treat them as consumable. The best solution I guess is the early 5 speed with the strengthening plate, unless JBTs marvelous new box lasts. Its not like they're expensive and if you do the maths you need quite a few cheap gearboxes for it to be worth spending a lot on it.
drive shafts are the next problem. I sheared one on launching at TOTB and sheared another one on road loading up full boost in 2nd gear
Former low boost hero - 616BHP@1.5 bar. 2.4 20VT RIP
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