User Tag List

+ Reply to Thread
Page 2 of 2 FirstFirst 1 2
Results 41 to 64 of 64

Thread: What is the best gearbox for XE with 250+bhp?

  1. #41
    Racer Decade Plus User

    Join Date
    Mar 2010
    Location
    Edinburgh
    Age
    46
    Posts
    3,641
    Thanks
    68
    Thanked 234 Times in 230 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Swindon 2l's were making over 300hp in race tune too, your never gona expect to get that sort of power by bolting together off the shelf kits.

  2. #42
    Bodger

    Join Date
    Feb 2011
    Location
    UK
    Posts
    72
    Thanks
    1
    Thanked 5 Times in 4 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Alledgely!
    Last edited by JL96; 16-08-2015 at 14:44.

  3. #43
    Mechanic

    Join Date
    Feb 2006
    Location
    Plymouth
    Posts
    899
    Thanks
    1
    Thanked 42 Times in 40 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    my mate had a 235bhp xe on 48s and a T5 dog box, and long story short it was junk, always going wrong and that was with a glebe gear kit. just a point to beware of with a dog box as well as he found out the hard way "NO MATTER HOW FAST YOU ARE GOING, IF YOU MISS A SPIRITED GEARCHANGE AND HIT FIRST GEAR, IT WILL ENGAGE AND PUT YOU IN A WORLD OF PAIN FINANCIALLY BY BUZZING THE MOTOR AND IF YOUR UNLUCKY LIKE HE WAS IT PUT ROD THRU BOTH SIDES OF BLOCK AND SUMP" i also run a JRE Xe on jenveys with 238bhp and a T9 synchro box and its just been for a rebuild after 4 rallys. I know of top spec 2.0L engines which only made the 290 mark but you will need dry sump and ask yourself if you want the expense for a fast road car come odd track day

  4. #44
    Racer Decade Plus User

    Join Date
    Mar 2010
    Location
    Edinburgh
    Age
    46
    Posts
    3,641
    Thanks
    68
    Thanked 234 Times in 230 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Spot on....I did it myself, hit 1st instead of 3rd with a 4speed dog box and kissed 15 valves. Learned my lesson though, a dog box is the way to go for big power XE's though.

  5. #45
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    56
    Posts
    25,110
    Thanks
    310
    Thanked 2,476 Times in 2,250 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    yep been there myself, redlined 4th, went for 5th got 3rd, game over, luckily despite ecu tell tale showing 10,000 rpm id only bent the exhaust valves

  6. #46
    Racer Decade Plus User

    Join Date
    Mar 2010
    Location
    Edinburgh
    Age
    46
    Posts
    3,641
    Thanks
    68
    Thanked 234 Times in 230 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Seems like we've all been down this route, I was 8500 but with hydraulic lifters that locked up, was in a Westfield with the air filter out the side of the bonnet, saw a puff of smoke out the filter and knew it was game over. That was my first dog box lesson. You can't beat them for strength though.

  7. #47
    Mechanic

    Join Date
    Feb 2006
    Location
    Plymouth
    Posts
    899
    Thanks
    1
    Thanked 42 Times in 40 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    need regular maintainence tho and for the price of a dog box you could possibly source a 2nd hand sequential

  8. #48
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    56
    Posts
    25,110
    Thanks
    310
    Thanked 2,476 Times in 2,250 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Quote Originally Posted by Erikmex View Post
    Seems like we've all been down this route,.
    thay said a couple of seasons later the crank snapped, you do have to wonder!

  9. #49
    Racer Decade Plus User

    Join Date
    Mar 2010
    Location
    Edinburgh
    Age
    46
    Posts
    3,641
    Thanks
    68
    Thanked 234 Times in 230 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Quote Originally Posted by livewire514 View Post
    need regular maintainence tho and for the price of a dog box you could possibly source a 2nd hand sequential
    True....still works out cheaper in the long run than a load of synchros.

  10. #50
    Bodger

    Join Date
    Aug 2009
    Location
    Australia
    Posts
    109
    Thanks
    0
    Thanked 21 Times in 14 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Just for interest, I run a 300HP Duratec with a Mazda RX7 turbo box, changing at 8,500 RPM.
    It's as sweet-as, never missed a change and has been doing it for 5 race seasons without a spanner on it.
    Mazda racers down under say they are pushing up-to 600HP through theirs and they still don't break.
    It's all alloy, quite slim /compact, has a removable bell housing, and the gearshift can be easily moved to suit the hole in your tunnel.
    Some good CR kits are also available.

  11. #51
    Racer Decade Plus User

    Join Date
    Mar 2010
    Location
    Edinburgh
    Age
    46
    Posts
    3,641
    Thanks
    68
    Thanked 234 Times in 230 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Yeah there are a few guys on here fitting Rx8 boxes too, seem to be getting popular. Your always gona get more transmission losses with helical gears though, by the time you fit a gear kits your just as pricey as a decent type 9. If I had the money I'd fit a Tractive or Quaife sequential. I'm only running around 200hp so a type 9 pro quaife does the job. I ran an Sl72 Tran x dog box on my XE Escort. Never let me down once.

  12. #52
    Racer Decade Plus User

    Join Date
    Mar 2010
    Location
    Edinburgh
    Age
    46
    Posts
    3,641
    Thanks
    68
    Thanked 234 Times in 230 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    They were building the Vauxhall BTCC engines during the Cleland years and won often so I don't doubt the figures, race tune though....mega revs

  13. #53
    TURBOSPORT SPONSOR Turbosport Subscriber
    Turbosport Moderator
    Turbosport Administrator
    Graham's Avatar
    My Race Car
    My 1st Project
    Join Date
    Feb 2006
    Location
    Ely, Cambs
    Age
    56
    Posts
    25,110
    Thanks
    310
    Thanked 2,476 Times in 2,250 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    btcc cars had a mandatory 8500 rpm rev limit, without it there would of been some mental rpm used by some

  14. #54
    Racer Decade Plus User

    Join Date
    Mar 2010
    Location
    Edinburgh
    Age
    46
    Posts
    3,641
    Thanks
    68
    Thanked 234 Times in 230 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    The pickup truck series had some mental XE's on 48's too, they were around 280hp, sealed Swindon engines too I think, got a soft spot for XE's, they have a signature solid lifter sound from the top end. Love them. If I wasn't hillclimbing I'd have one in a sec.

  15. #55
    Mechanic

    My 1st Project
    Join Date
    Jan 2005
    Location
    up north
    Posts
    670
    Thanks
    34
    Thanked 38 Times in 36 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    btcc vauxhalls were not any more than 290 david had an ex one in his hillclimb car,a lot of mods to get there buy the looks of it too as in recast inlet trac angles.it went the same way as grahams one and broke the crank,expensive pile of poo best left std

  16. #56
    Bodger

    Join Date
    Feb 2016
    Location
    Gloucestershire
    Age
    65
    Posts
    51
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Quote Originally Posted by Erikmex View Post
    The pickup truck series had some mental XE's on 48's too, they were around 280hp, sealed Swindon engines too I think, got a soft spot for XE's, they have a signature solid lifter sound from the top end. Love them. If I wasn't hillclimbing I'd have one in a sec.
    try around 230 bhp , controlled cams and ecu on carbs, 280 brake no chance

  17. #57
    Racer Decade Plus User

    Join Date
    Mar 2010
    Location
    Edinburgh
    Age
    46
    Posts
    3,641
    Thanks
    68
    Thanked 234 Times in 230 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Quote Originally Posted by mtt mark View Post
    try around 230 bhp , controlled cams and ecu on carbs, 280 brake no chance
    I've had 230 on 45's with 38mm chokes and hydraulic cams,

  18. #58
    Bodger

    Join Date
    Feb 2016
    Location
    Gloucestershire
    Age
    65
    Posts
    51
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Quote Originally Posted by Erikmex View Post
    I've had 230 on 45's with 38mm chokes and hydraulic cams,
    likewise, pickup trucks are a controlled formula to keep costs down, 230 brake is cheap 280 isn,t, I've been building xe'sfor a long time I know what can and cant be done

  19. #59
    Spanner Monkey AlexA's Avatar

    Join Date
    Aug 2009
    Location
    London
    Posts
    218
    Thanks
    1
    Thanked 14 Times in 14 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Quote Originally Posted by mtt mark View Post
    likewise, pickup trucks are a controlled formula to keep costs down, 230 brake is cheap 280 isn,t, I've been building xe'sfor a long time I know what can and cant be done
    I have an xe with 210hp. omega +88 pistons, QED 420 on twin 45s. Whats the best way to get it to 230-40hp ?

  20. #60
    Bodger

    Join Date
    Feb 2016
    Location
    Gloucestershire
    Age
    65
    Posts
    51
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Quote Originally Posted by AlexA View Post
    I have an xe with 210hp. omega +88 pistons, QED 420 on twin 45s. Whats the best way to get it to 230-40hp ?
    change your cams to q450v's, straight swop will just need reshimming and carbs will need rejetting. Alternatively just fit the inlet cam a lot of the grassers do this for a balance of power and torque with a wide power band. Once you go above 240 then the costs mount up.

  21. #61
    Spanner Monkey AlexA's Avatar

    Join Date
    Aug 2009
    Location
    London
    Posts
    218
    Thanks
    1
    Thanked 14 Times in 14 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    ok great thanks for info.

  22. #62
    Mechanic boddx's Avatar

    Join Date
    Feb 2009
    Location
    West Midlands
    Age
    56
    Posts
    536
    Thanks
    12
    Thanked 34 Times in 20 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    I have an early XE in my mk2, fully worked coscast head,1612's, verniers, twin 48's, MBE, SBD manifolds,ARP's.
    207@ wheels.
    Running a Type 9 quaiffe HD SCCR Box.
    had no issues at all.
    runs 7900rpm in every gear

    Here's the video of it on the rolling road at Hitec road and race. watch to the end and you see the dyno readout screen.

    https://youtu.be/Sdx1mwxoUEA
    Last edited by boddx; 09-07-2016 at 07:47. Reason: spelling

  23. #63
    Mechanic

    Join Date
    Feb 2006
    Location
    Plymouth
    Posts
    899
    Thanks
    1
    Thanked 42 Times in 40 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    I know of xes with 290bhp with std cranks

  24. #64
    Tyre Kicker

    Join Date
    Jul 2016
    Location
    Corby
    Posts
    4
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: What is the best gearbox for XE with 250+bhp?

    Hi mate are you selling the adapter plates as I've got a 300bhp c20let in my kit car and am looking to get a better gearbox and am looking at the Mazda rx8 gearbox

+ Reply to Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts