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Author: Subject: i like the idea of a sequential gear shift
mastercobbler

posted on 3/2/09 at 02:19 PM Reply With Quote
i like the idea of a sequential gear shift

hi guys still looking for inspiration, iwatched a couple of videos on youtube and i like the idea of a sequential gear change,but reading about BEC's i find all the talk about, baffled sumps and rods through block if oil starvation occurs, a bit worrying, could you do sequential change with "ordinary" car engine, apologies if this sounds dumb but as my mum said "if you dont,ask you dont get"

cheers john

[Edited on 3/2/09 by mastercobbler]

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cloudy

posted on 3/2/09 at 02:22 PM Reply With Quote
CEC's go wrong too, but there's normally other avenues to research the problems - bike engine's tend to get talked about more because of the unique problems we encounter with mounting them 90 degrees rotated...

That said BEC's will always been more highly strung - but if we wanted a reliable motor i'd just use my tin top


James





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jlparsons

posted on 3/2/09 at 02:22 PM Reply With Quote
Saw an article in TKC about the gearbox in the westfield 2000 sport and the company that built it, it's a customer made sequential. I forget the name of the company who made it. You can get them, but you're looking at a few thousand quid, plus i hear they need a lot more attention than a BEC/CEC box.





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oldtimer

posted on 3/2/09 at 02:23 PM Reply With Quote
Not a silly question at all, just go to the quaife site and check them out, but they are so wallet shredding that very few go for them.
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flak monkey

posted on 3/2/09 at 02:25 PM Reply With Quote
Quaife make a 6 speed sequential type 9 box. Burton power sell them, but you can probably get them cheaper.

BGH make the boxes for caterham.

David





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Mr Whippy

posted on 3/2/09 at 02:25 PM Reply With Quote
Just use a rwd automatic car as the donor, their even faster at changing gear than a BEC, last about 5 times longer and have a reverse as standard. Many come with different modes like sports or snow and have only 2 pedals to squeeze in. This country is well behind the Americans as far as that side of things are concerned, why anyone wants to manually change gears & slip clutches is very odd. My cars that have manual boxs are only that way cos I can't get autos for them



[Edited on 3/2/09 by Mr Whippy]





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Guinness

posted on 3/2/09 at 02:25 PM Reply With Quote
Have a look on the Burton Power website at the Quaife sequential gearboxes that replace a type 9. They go for between £4 and £6 grand!

Could buy and break a lot of bike engines for that much!

Go BEC, get the install right and you won't have any problems (says the man who killed two engines with oil starvation problems (but then it was a learning curve as not many people had put the ZZR in their cars at that point))!

Cheers

Mike






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dinosaurjuice

posted on 3/2/09 at 02:28 PM Reply With Quote
quote:
Originally posted by Mr Whippy
just use a rwd automatic car as the donor, their even faster at changing gear than a BEC, last about 5 times longer and have a reverse as standard


....and with some tinkering most autos can be bodged to give all gears in reverse






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Dangle_kt

posted on 3/2/09 at 02:31 PM Reply With Quote
quote:
Originally posted by Mr Whippy
just use a rwd automatic car as the donor, their even faster at changing gear than a BEC


Bet there not, clutchless upshift in a bec is pretty dam quick, plus you can choose when to change gear rather than have the car think about when it wants to.

Oil starvation only affects certain engines, the more popular BEC choices are far more reliable - old blades for example are pretty bullet proof by all accounts.

Obviously sometimes a rod might burst through the block, but I very much doubt there is a CEC engine model which has never had a problem.

At the end of the day, high performance engines will always be high maintainance. But you pays your money, you makes your choice.

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mr henderson

posted on 3/2/09 at 02:34 PM Reply With Quote
quote:
Originally posted by Mr Whippy
just use a rwd automatic car as the donor, their even faster at changing gear than a BEC, last about 5 times longer and have a reverse as standard


Makes a lot of sense. There's a firm in South Africa that make an electronic controller for modern auto boxes that can be programmed or used to make manual selection.

Manual gearboxes are just so yesterday's technology, it's just a lot of people don't realise it yet. I am reliably informed there are still tin tops being purchased with manual gearboxes! Are the customers mad? Do they actually like having to constantly change gear and work the clutch whether they want to or not?

Manuals should be made illegal, if it's not legal to eat a sandwich while driving I don't see how it can be legal to change gear.

John






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Mr Whippy

posted on 3/2/09 at 02:36 PM Reply With Quote
Actually flooring it a good autobox is never out of gear, it’s simply slipping the clutch plates as it changes from one gear to the other so the car doesn’t stop accelerating or the engine driving the car forward. In that way it’s really not taking any time to change gear since not once is the drive disconnected unlike a BEC.

[Edited on 3/2/09 by Mr Whippy]





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Paul TigerB6

posted on 3/2/09 at 02:40 PM Reply With Quote
As mentioned above in various posts, a sequential box for a car engine is seriously expensive.

Dont be worried about all the talk of baffled sumps etc. Everyone on this site will no doubt agree that building a car (be it bike or car engined) is a great learning experience and you will wonder in a year or so's time what you were worried about. Look upon it as a chance to learn something new - research anything that you dont understand on here and the wider internet etc, and your build will be all the more enjoyable for it.

Lets say you go for a car engine - how much do you currently know about shallow sumps, lightened flywheels, multi-carb setups and aftemarket mappable ECU's?? Either way you will have a lot to learn, so if you fancy a BEC with sequential change then go for a BEC (just do all the research first - and go for a ride out in one if you can).

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procomp

posted on 3/2/09 at 02:41 PM Reply With Quote
Hi

The gearbox that was mentioned in a westfield was probably the ELITE . However they have proved to be somewhat unreliable over the last two years. The best option by far is still the Quaife 6 speed sequential version. I am currently just finishing installing one of these in to a Westfield for a customer up against a Duratec engine.

All in all it is a relatively straight foward conversion ( straight swap for a type 9 supposedly ) but it dose not seem to be a straight swap as we have had to make a spacer and other mods also. However once installed it is a joy to work smooth operation and no chance of selecting neutral or reverse by accident as the lift collar works well. As said though very expensive new as you can buy a 6 speed sequential Hewland for less. And theres not many going for sale second hand.

Cheers Matt






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BenB

posted on 3/2/09 at 02:42 PM Reply With Quote
Of course you can just fit a bike engine that is in the car the way the manafacturer intended in the bike (IE isn't 90 degrees out of alignment)....

like a ST1100

Doesn't need a dry sump either unless you want to run crazily low ride height levels (like I do, hence I'm dry sumping it )....
Only 5 sequential gears though....

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sucksqueezebangblow

posted on 3/2/09 at 02:54 PM Reply With Quote
You could take a look at these;

Elite Racing Transmissions Link





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richardlee237

posted on 3/2/09 at 03:00 PM Reply With Quote
I am sure I can remember Prodrive fitting a controller to a conventional "gated" box to give sequential gear changes. I beleive it was when Subaru first started rallying.

When the sequential unit failed they were able to revert to conventional gear changes.

Can't be too difficult with a couple of solenoids and a bit of logic.

[Edited on 3/2/09 by richardlee237]





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Quote Richard Lee

"and cars"

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Humbug

posted on 3/2/09 at 03:21 PM Reply With Quote
Joao Caldeira is apparently make a sequential adapter for a Type 9 box:

here



Don't know anything about it or how much it is/will be

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procomp

posted on 3/2/09 at 03:25 PM Reply With Quote
Hi

The thing you need to remember is that the proper sequential units are DOG boxes IE no syncros. Any of the conversions that just bolt on are using the STD box with syncros. Which are the weak link on the boxes in the first place.

Cheers Matt






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Paul TigerB6

posted on 3/2/09 at 03:30 PM Reply With Quote
^^^ learning to fit a baffle plate to a bike engine looks a whole lot easier for a beginner to learn!!

Wiring mods are about the hardest bit of a bike engine install in my experience, and thats just a case of following instructions available on the net.

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nick205

posted on 3/2/09 at 03:46 PM Reply With Quote
quote:
Originally posted by mr henderson
quote:
Originally posted by Mr Whippy
just use a rwd automatic car as the donor, their even faster at changing gear than a BEC, last about 5 times longer and have a reverse as standard


Makes a lot of sense. There's a firm in South Africa that make an electronic controller for modern auto boxes that can be programmed or used to make manual selection.

Manual gearboxes are just so yesterday's technology, it's just a lot of people don't realise it yet. I am reliably informed there are still tin tops being purchased with manual gearboxes! Are the customers mad? Do they actually like having to constantly change gear and work the clutch whether they want to or not?

Manuals should be made illegal, if it's not legal to eat a sandwich while driving I don't see how it can be legal to change gear.

John


Having driven several Audis with DSG boxes I find them great going up the box, but generally miss the lack of control coming down the box.

i.e. I like to drop the clutch, select a lower gear and then use the clutch to effect some engine breaking and then be in the right gear for accelerating. Possibly more of a diesel driving thing, but I often select a higher gear (e.g. pull off in 2nd) and slip the clutch a bit to get a longer pull in a particular gear too.

There's also something "right" about physically changing gear - one of those tactile elements of driving


I suspect as gearbox makers drive us forward we'll all end up with DSG type boxes tho'






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Delinquent

posted on 3/2/09 at 04:09 PM Reply With Quote
quote:
Originally posted by Mr Whippy
Just use a rwd automatic car as the donor, their even faster at changing gear than a BEC, last about 5 times longer and have a reverse as standard. Many come with different modes like sports or snow and have only 2 pedals to squeeze in. This country is well behind the Americans as far as that side of things are concerned, why anyone wants to manually change gears & slip clutches is very odd. My cars that have manual boxs are only that way cos I can't get autos for them



[Edited on 3/2/09 by Mr Whippy]


If a wide selection of DSG boxes were widely available I'd agree wholeheartedly, but I get seriously hacked off with my current Audi auto as I have every other auto I've driven - they seem to have an innate ability to chose the wrong gear at the wrong moment.

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dinosaurjuice

posted on 3/2/09 at 04:14 PM Reply With Quote
quote:
Originally posted by mr henderson
quote:
Originally posted by Mr Whippy
just use a rwd automatic car as the donor, their even faster at changing gear than a BEC, last about 5 times longer and have a reverse as standard


Makes a lot of sense. There's a firm in South Africa that make an electronic controller for modern auto boxes that can be programmed or used to make manual selection.


Manual gearboxes are just so yesterday's technology, it's just a lot of people don't realise it yet. I am reliably informed there are still tin tops being purchased with manual gearboxes! Are the customers mad? Do they actually like having to constantly change gear and work the clutch whether they want to or not?

Manuals should be made illegal, if it's not legal to eat a sandwich while driving I don't see how it can be legal to change gear.

John


HAHAHA take a look around!!

cars as a whole are yesturdays technology! theres nothing new about a box full of petrol and crude engines that we drive around in, having to turn the wheel ourselves, and take responsibility for where we go and how fast we get there.

rant over

will






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Richard Quinn

posted on 3/2/09 at 04:24 PM Reply With Quote
I've never driven a manual car that has changed gear mid corner to try to kill me whereas a particularly psychopathic Alfa auto that I once drove hard did attempt to murder me!
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coozer

posted on 3/2/09 at 04:34 PM Reply With Quote
GORDON BENNET!

Bike engines are easy to install...

Car engines are easy to install...

Sump baffles are easy to install...

Wiring's dead easy as well (for me)

Whats all the fuss about?

Bike engiens come with sequential and its very cool, but really is it such a big deal to have an H pattern?

The extra speed speed of a CEC surely makes up for the longer change time??





1972 V8 Jago

1980 Z750

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Paul TigerB6

posted on 3/2/09 at 04:43 PM Reply With Quote
quote:
Originally posted by coozer
GORDON BENNET!

Bike engines are easy to install...

Car engines are easy to install...

Sump baffles are easy to install...

Wiring's dead easy as well (for me)

Whats all the fuss about?



They are all easy to me too - but i have 8 years experience and have built 3 cars.... helped with several others.

The OP is a beginner to all this with obvious concerns about building his first kit car and unknown experience so it'd be useful if this was taken into account by everyone.

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