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Wales
by Joske Vermeule, September 1
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Forums39
Topics49,883
Posts837,824
Members9,597
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Most Online1,063 Jun 14th, 2026
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Joined: Sep 2009
Posts: 7,435 Likes: 122
Talk Morgan Guru
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Talk Morgan Guru
Joined: Sep 2009
Posts: 7,435 Likes: 122 |
The five speed Mx5 gearbox seems to have an enviable reputation for strength, which is not shared by the six speeder. On a different tack I'm being sucked in towards the Plus 4 Club Racer upgrade......... I need a cunning plan to get it past MrsW.......... I bet she'll never know. It is like cheating without sin.
'14 4/4 graphite grey
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Joined: Dec 2008
Posts: 22,367 Likes: 354
Roadster Guru Member of the Inner Circle
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Roadster Guru Member of the Inner Circle
Joined: Dec 2008
Posts: 22,367 Likes: 354 |
Trouble is I need to distract her while we're at the dealers..............
DaveW '05 Red Roadster S1 '16 Yellow (Not the only) Narrow AR GDI Plus 4
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Joined: Oct 2006
Posts: 2,568 Likes: 93
Talk Morgan Expert
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OP
Talk Morgan Expert
Joined: Oct 2006
Posts: 2,568 Likes: 93 |
The Cosworth tuning is less lary than it seems and the ECU is all pre-packaged. Ditch the Mazda gearbox and keep the Elite unit offered.
Only adjustment is prop length which is an easy enough job and not scary.
A decent CR HD race box and you’ll be wondering why use a road box...??
As a complete integrated unit - it’s a good price (no affiliation with seller btw).
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Joined: Jul 2015
Posts: 979 Likes: 2
Talk Morgan Regular
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Talk Morgan Regular
Joined: Jul 2015
Posts: 979 Likes: 2 |
It would (only my opinion) be a horrible 4 pot screamer...with very little torque. If it has a turbo then that would improve drivablity, however it would still be pretty harsh? I would prefer a 5, 6 or 8 pot with those sorts of figures. 
Honesty means doing it right, even when no one is looking!
2004 Roadster S1 3.0 V6 gone!
Mark
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Joined: May 2015
Posts: 327
Learner Plates Off!
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Learner Plates Off!
Joined: May 2015
Posts: 327 |
The morgan gearbox goes straight on to the Mazda MZR engine ('cos in actual fact its a ford duratec engine, or the ford duratec engine is a Mazda MZR, depends which way you look at it!) I have the set up in my plus 4, the 200bhp supersport engine, 5 speed mazda box, great combination, you just got to be sure the mazda VVT cog is of the lates design it can fail resulting in a timing chain like clatter on start up, the later one doesn't, allegedly!. The gearbox will hold up to 260+ bhp thro it. With 260 bhp out of the MZR/Duratec forged crank and pistons would be required. HWR Motorsport in northumberland do a lovely cosworth engine and get the blocks and heads in half a dozen at a time from US. Omex also do a lovely MZR/Duratec see thier website with prices. They developed the plus 4 s/s engine i believe
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Joined: May 2014
Posts: 5,442 Likes: 133
Black Rat Charter Member
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Black Rat Charter Member
Joined: May 2014
Posts: 5,442 Likes: 133 |
The mx5 gearbox won't cope for one thing! surely the Ad said complete with sequential gearbox ?
Keith 2013 narrow bodied + 4 Ruby.
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