A different take on the gearbox situation
Discussion
Hello all,
Just thought I'd share an idea I'm working on at the moment, but ultimately its still an idea at this point so don't get too excited or dismissive yet. I know new gear sets and stronger casings have been investigated in the past, as yet there is still nothing tried and tested on the market which is becoming increasingly frustrating.
I don't want to be a test mule for an expensive exercise but I want an option, I wanted it yesterday and I want it to be bomb proof so I think I have a solution to that,
My spare gearbox has been sent away to the continent, not to see if gears or casing can be made, but to be measured up and have an adapter plate made to fit our bell housing pattern, on the other side of the adaptor will sit an already in production and widely used EVO, 6 speed sequential dog engagement box with a diff fitted instead of a transfer box, this has been done before on other cars (including drag machines with 1200hp on a H pattern), and it works, these gearboxes have regularly run 1000bhp and can take anything our V6 could throw at it. The main reason for this choice is one EVO box in particular has a very similar casing to our ford unit and the driveshaft's should end up sitting within a few mm of where they do now.
The benefit of going down this route is the cost will be relatively acceptable, its a commonly used off the shelf EVO sequential box so no huge development needed, parts more widely available and a manufacturer warranty. The only 'tricky' bit will be making custom mounts (similar bolting position to ours anyway) and drive shafts (someone lined up to make these) then make sure we can find a starter which fits the space. A rod shifting system is the desire but failing that for space reasons, use cables, and make use of the flat shift capabilities of the new MBE9A5 ECU.
I will hopefully have some more concrete info for you over the next couple of months, but fingers crossed this will be available as an option to us by July/August and be raced on before the season is out. To keep costs down we are going to use an old donor casing that we have with the adaptor plate to check things all line up and fit before actually purchasing the rest of the kit.
Graham
Just thought I'd share an idea I'm working on at the moment, but ultimately its still an idea at this point so don't get too excited or dismissive yet. I know new gear sets and stronger casings have been investigated in the past, as yet there is still nothing tried and tested on the market which is becoming increasingly frustrating.
I don't want to be a test mule for an expensive exercise but I want an option, I wanted it yesterday and I want it to be bomb proof so I think I have a solution to that,
My spare gearbox has been sent away to the continent, not to see if gears or casing can be made, but to be measured up and have an adapter plate made to fit our bell housing pattern, on the other side of the adaptor will sit an already in production and widely used EVO, 6 speed sequential dog engagement box with a diff fitted instead of a transfer box, this has been done before on other cars (including drag machines with 1200hp on a H pattern), and it works, these gearboxes have regularly run 1000bhp and can take anything our V6 could throw at it. The main reason for this choice is one EVO box in particular has a very similar casing to our ford unit and the driveshaft's should end up sitting within a few mm of where they do now.
The benefit of going down this route is the cost will be relatively acceptable, its a commonly used off the shelf EVO sequential box so no huge development needed, parts more widely available and a manufacturer warranty. The only 'tricky' bit will be making custom mounts (similar bolting position to ours anyway) and drive shafts (someone lined up to make these) then make sure we can find a starter which fits the space. A rod shifting system is the desire but failing that for space reasons, use cables, and make use of the flat shift capabilities of the new MBE9A5 ECU.
I will hopefully have some more concrete info for you over the next couple of months, but fingers crossed this will be available as an option to us by July/August and be raced on before the season is out. To keep costs down we are going to use an old donor casing that we have with the adaptor plate to check things all line up and fit before actually purchasing the rest of the kit.
Graham
GTO600 said:
Interesting solution & if you can get it to fit wonderful.
Not sure how much the gearbox is but l use to compete against a guy with a 650bhp Evo & his gearbox was £33K
Not sure how much the gearbox is but l use to compete against a guy with a 650bhp Evo & his gearbox was £33K
no I wouldn't do it if it was that costly. I don't want to put my foot in it by mentioning costs now but the gear set itself is listed online for £6700, add £3-4k for the aforementioned ancillaries and you'll get an idea.
Almost 5pm!
= weight 
if you're spending money on the box then here's something to add to the list....
http://www.sqsracing.com/Vproducts/index/6/sequent...
http://www.sqsracing.com/Vproducts/index/6/sequent...
Hi Chris,
The questions have been asked already and the manufacturer has said their 6 speed can take 950bhp 'no problem', plus the 6 speed is what I and the majority would want, the reputation they have is fantastic. They can do custom ratios too if needed but we will come up with a 'noble spec' so it's no addition cost to others at a later stage.
Bondy, yes for the bell housing but the Ferrari box is longitudinally mounted so that's no use, we need to plan the adaptor plate so the driveshaft/diff position sits at the same distance from the crank and same height relative to the position of the mounting points, The garage we all love couldn't do that from what they learned on that build.
Interesting shifters there Green3R, for the moment I'll be going with what the manufacturer recommends but will also explore paddle shift options
G
The questions have been asked already and the manufacturer has said their 6 speed can take 950bhp 'no problem', plus the 6 speed is what I and the majority would want, the reputation they have is fantastic. They can do custom ratios too if needed but we will come up with a 'noble spec' so it's no addition cost to others at a later stage.
Bondy, yes for the bell housing but the Ferrari box is longitudinally mounted so that's no use, we need to plan the adaptor plate so the driveshaft/diff position sits at the same distance from the crank and same height relative to the position of the mounting points, The garage we all love couldn't do that from what they learned on that build.
Interesting shifters there Green3R, for the moment I'll be going with what the manufacturer recommends but will also explore paddle shift options
G
Green3R said:
if you're spending money on the box then here's something to add to the list....
http://www.sqsracing.com/Vproducts/index/6/sequent...
A lot of money to throw at an H shift for slower shifting and premature synchro wear according to many.http://www.sqsracing.com/Vproducts/index/6/sequent...
Putting an interface like this between you and the gear shift mech just loses feel for the engagement and you still need to use the clutch.
Shifting an H will be quicker(unless you are inept) and more sympathetic to the driveline IMO.
For a dog box yes(flat shifting) synchro no.
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