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 3329 Posts Member #: 184 Senior Member Melton Mowbray, Pie Country |
16th May, 2011 at 09:31:37am
On 15th May, 2011 Sprocket said:
Lets also consider the Metro is heavier than a Mini so the gearbox is not as stressed. cost :) I always question the logic behind this. If the engine is producing 100ftlb then that is what is going through the gearbox, regardless of the weight of the car. The car may accelerate slower, but the engine can't exert any more stress on the box just because the car is heavier. http://www.twin-turbo.co.uk
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 141 Posts Member #: 7891 Advanced Member Annapolis, MD USA |
16th May, 2011 at 12:53:56pm
I feel your pain....I had exactly the same problem when I did a 2nd-3rd shift in my NA 1380 about 500 miles after a full rebuild top and bottom. Now I have the Clubman set and so far so good....at least it means I made some good torque after the bump to 1380!
Eric
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4309 Posts Member #: 1321 Post Whore Wiltshire |
16th May, 2011 at 08:28:16pm
Hmm, I guess I'm borrowed time then with my 1380 then on a standard box.
On 7th Oct, 2010 5haneJ said:
yeah I gave it all a good prodding |
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 207 Posts Member #: 9045 Senior Member Wolverhampton, West Midlands |
16th May, 2011 at 09:14:17pm
Wow. Exactly like how mine has gone. Did you find out the cause of the problem? |
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 11046 Posts Member #: 965 Post Whore Preston On The Brook |
16th May, 2011 at 09:39:52pm
I used a standard box on the 1400 with 100lbft. It never had an easy time of it either, but was rebuilt around 6000miles then fitted to the 16 valver. Another 3500miles on that with maybe 100lbft+ bursts. To give you an idea, that was 50hp straight hit of nitrous, so not very forgiving on the box. 1200 miles towing a trailer to cornwall and back, hammered it all day at MITP, drove it home.
On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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 16540 Posts Member #: 4241 King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner Rotherham, South Yorkshire |
17th May, 2011 at 07:50:51am
The metro van's last helical box survived 150bhp, about the same torque and a boat load of abuse. That had no rebuild or maintenance to speak of. I just fished the bits of broken diff out of it, changed the drops and pinion and chucked it on. Broke the first motion shaft bearing though... On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it 
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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
17th May, 2011 at 07:50:59am
On 16th May, 2011 Ben H said:
On 15th May, 2011 Sprocket said:
Lets also consider the Metro is heavier than a Mini so the gearbox is not as stressed. cost :) I always question the logic behind this. If the engine is producing 100ftlb then that is what is going through the gearbox, regardless of the weight of the car. The car may accelerate slower, but the engine can't exert any more stress on the box just because the car is heavier. I've thought about this for a few days and come up with an answer. Yes you are correct Ben, the maximum torque that the box will see is dictated by the engine not the weight of the car. But the average torque on the box may be higher as you will need nore throttle to pull a heavier weight up a hill for example. Thus, a box from a metro may wear quicker. wear in bearings may then lead to failure, but it will not be directly related to the maximum torque. I used the box that came with the sprint (mileage unknown) and just wacked the turbo 998 straight on it. Probably done 8,000miles now, it is a 'double-cut' HLE box. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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 720 Posts Member #: 2588 Post Whore Pretoria South Africa |
17th May, 2011 at 09:58:58am
I've done the same damage twice. After the second strip down we found that the layshaft was bent. Replace the oil pump as mine was buggered after only about 30 sec of idling with bits of gearbox going through it.
"So wat we gonna do tonight Brain?"
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1083 Posts Member #: 8932 Post Whore |
17th May, 2011 at 09:10:07pm
Thats suprising to see an n/a engine do that, you can imagine what a more powerful turbo motor would do to one. s/c next i guess? |
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1391 Posts Member #: 1686 Post Whore Oxford |
17th May, 2011 at 11:50:04pm
Im supprised. Ive ran over 110 curleys through a helical box without any issue. I suspect your box has been subjected to a few too many emergency starts. On 19th Feb, 2011 Miniwilliams said:
OMG Robert that's a big one |
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