The new Straight cut 5 speed gearbox
Turbo Mini Forums

HI lads..

been chatting to a guy local in australia, he said that the new 5 speed straight cut gearboxes are very good.. not that they are new.. but the newer cut mini spares ones. had there gears re designed?

he is using them with helical Drop gears & said that there is hardly any whine at all.

he said it is most noticed when in 5th on the highway..

I was really impressed as he said at about in 4th 3.4 ratio it does about 4,100 to 4,300 revs or so
& drops in 5th over drive with a ratio of 2.9 giving around 3,000 or 3,100 revs.

are the newer designed mini spares straight cuts that more silent then the old design?

im very interested as i think this is great to use with decent power.

he said the key is using the helical drop gears as that makes a hell of a racket if straight cut.


i guess the new gear sets even in a 4 speed would be good is anyone using them?

are these the £6k ones?

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

no, he bought this one & said it has been awesome he has a sc7port injected 1380 with this 5speed under it --> http://www.minispares.com/Product.aspx?pid=36391

£2k isnt too bad imo.

Audi s4 b5 - 470bhp & 486ft lbs

On 30th Apr, 2012 Brett said:
yeah stick the bit in and give it a wobble

for what you get it seems a good price.

looks nice
want one

so if it was a 3.2 diff would the fith gear ratio be 2.7?

which would be great for motorway cruising!

Reading up on RTS Clutches

Nice if you do alot of motorway driving with a 3.1 fd fitted,

Or. ..... you have bragging rights propping the bar up...... what the warranty or the torque limit? ...I will find out

warrenty on torque... you having a laugh! normally you'll only find a guarentee to be free from defects at the point of sale wont you?

that said, a mate of mine has a helical MS box under his K head motor, it does make for a really nice drivable package.

Joe, minisport did a 5 speed helical and limited the warranty. To 80ftb of torque. .... stated not suitable. For Turbo application. ... lmao

I was just taking the piss ... but you missed the point. Buddy

Thats pretty tempting with a few highways raising their speed limits to 80 around here, but if its only rated to 80ftlbs tq it then maybe not so much

-1974 Mini 1000 - BRG Turbo Build Soon to come

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In the 13's at last!.. Just

JK did a poll on the subject last year.
Any conclusions (devellopment) from that poll?

Dazed and Confused....

I'm not talking about the helcoil box this
Is a straight cut box but using hel drop gears to dim the sound a bit.

So I'm sure it easy would take the torque, nothing about it being limited on the website at all.

Unlike the helical box that is limited to 93ft or what ever the original box was.

This with hel drops would be awesome
I think, not to loud and not much worry.

I wonder though with the 5th gear hanging out like that how it would deal on boost?

Seems the weakest link?

The Japanese did one a few years back that put forest way out yonder, why? It's the gear you user the least and takes less punishment.

Why no one has expanded and developed that style is odd.

Own the day

WWW.TURBO-MINI.COM

^ First? 1st?

Oh please you first what I ment. Any how like I said they put forest on the dog leg not fifth. No idea what that means but Narita kad who ever that might be thought it a good idea.

Own the day

It's not the age that makes me creak it's the mileage