Best Box for SE5 competition car

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collin
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Best Box for SE5 competition car

Post by collin » Thu Jun 28, 2018 7:56 am

Hi.
I'm looking for some advice on choosing the best option of gearbox for my Hillclimb /Sprint and sometimes circuit SE5.

The Type 9 appears to be a possibility as does aT5 with the right ratios, although a good old 4 speed Ford with Quaife or BGH Internals.
would more in period although they are getting hard to find these days

It's finding the right box and close (or indeed, wide) ratios to suit my moderately tweaked and torquey (210 bhp) Essex motor.

So advice for those who have trodden this path before would be priceless



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Best Box for SE5 competition car

Post by Coupe Racing » Thu Jun 28, 2018 8:01 am

The 4 speed non overdrive is up to the job and two input shaft length are available
The type 9 can be weak
The cossie box is strong and light

I have a couple of 4 speed boxes here I’m not using if it helps


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Best Box for SE5 competition car

Post by philhoward » Thu Jun 28, 2018 8:10 am

Check the regulations of what class(es) you will be running in - if it has to be a gearbox as fitted originally, then it’s got to be the original 4 speed which tend to be up to the job.

If gearbox choice is free, then the T5 is probably the better choice - depending on budget, of course.

Despite the best efforts of BGH, you won’t get a type 9 to last long in competition use behind a V6.


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Best Box for SE5 competition car

Post by efi_sprintgte » Thu Jun 28, 2018 8:11 am

philhoward wrote:
Thu Jun 28, 2018 8:10 am
Check the regulations of what class(es) you will be running in - if it has to be a gearbox as fitted originally, then it’s got to be the original 4 speed which tend to be up to the job.

If gearbox choice is free, then the T5 is probably the better choice - depending on budget, of course.

Despite the best efforts of BGH, you won’t get a type 9 to last long in competition use behind a V6.
X2


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Best Box for SE5 competition car

Post by scimjim » Thu Jun 28, 2018 8:29 am

Yep, Roadgoing Series Production Cars:
(a) The gearbox and differential casing must be externally identifiable as that fitted to the original model or specified option and remain in their original position.
(b) The method of gear selection must remain standard (sequential selection only where fitted as standard).

Transmission is free (layout as standard) if you’re entering as modified series production.


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Best Box for SE5 competition car

Post by efi_sprintgte » Thu Jun 28, 2018 9:04 am

I’m not sure about New Zealand regs


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Best Box for SE5 competition car

Post by scimjim » Thu Jun 28, 2018 9:07 am

efi_sprintgte wrote:
Thu Jun 28, 2018 9:04 am
I’m not sure about New Zealand regs
Ah - missed the location :D

If type of box is free then it has to be a T5 surely? Although the RX8 box is gaining popularity, I’m not sure if anyone has tested it extensively on an Essex yet?


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Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), Sabre/MX5 auto (The Flying Broomstick),
1300 SS1 (Number One) & Sarah's coupe.
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Best Box for SE5 competition car

Post by philhoward » Thu Jun 28, 2018 9:14 am

If going T5, remember that not all T5 gearboxes are created equal - needs to be the World Cup version IIRC.


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Best Box for SE5 competition car

Post by frodo_monkey » Thu Jun 28, 2018 9:20 am

World Class not World Cup :)

I’ve bought a Cossie T5 for mine, have a look in the ‘Wakey wakey’ thread for T5 differences and some handy links which will help you identify the correct one.



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Best Box for SE5 competition car

Post by philhoward » Thu Jun 28, 2018 9:20 am

:oops:


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Best Box for SE5 competition car

Post by Coupe Racing » Thu Jun 28, 2018 10:59 am

scimjim wrote:
Thu Jun 28, 2018 9:07 am
efi_sprintgte wrote:
Thu Jun 28, 2018 9:04 am
I’m not sure about New Zealand regs
Ah - missed the location :D

Me too was on my mobile


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