| Page: |
| Home > Technical Chat > How Much Will A Helical Transmission Really Take? | |||||||
 11046 Posts Member #: 965 Post Whore Preston On The Brook |
13th Jul, 2010 at 05:35:32pm
Lets Find Out 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........ |
||||||
 1183 Posts Member #: 6926 Post Whore Accrington |
13th Jul, 2010 at 05:40:04pm
just as a side note.. my helical standard box was fitted to my turbo and i ran a good 8k miles through it with 133lbps of torque and approx 140bhp without problems, pistons went first lol.
|
||||||
|
3594 Posts Member #: 655 Post Whore Northern Ireland |
13th Jul, 2010 at 07:25:00pm
Std helical gears dont take much at all.
9.85 @ 145mph
|
||||||
|
520 Posts Member #: 2093 Post Whore Grenoble, France |
13th Jul, 2010 at 07:57:23pm
stevieturbo, if "not much" means 9.87 @ 145 mph then I would not stress for most of Minis :) . std 998 A+, g295, MD266, RHF4, 109hp @0.8bar/5400rpm |
||||||
|
Site Admin  15300 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
13th Jul, 2010 at 08:40:07pm
9.87@145 is Stevies supercharged V8 Granada.
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
||||||
 9502 Posts Member #: 1023 Post Whore Doncaster, South Yorkshire |
13th Jul, 2010 at 08:43:26pm
isnt Robert still running a helical box and straight cut drops? or is it the other way around
Edited by Brett on 13th Jul, 2010. Yes i moved to the darkside |
||||||
|
11046 Posts Member #: 965 Post Whore Preston On The Brook |
13th Jul, 2010 at 08:54:29pm
Right I have been checking second and third gear side clearance, and it is in excess of 0.006" where it should be 0.0035" to 0.0055" and I would rather have it towards the 0.0035".
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........ |
||||||
|
3594 Posts Member #: 655 Post Whore Northern Ireland |
13th Jul, 2010 at 09:02:43pm
On 13th Jul, 2010 alpa said:
stevieturbo, if "not much" means 9.87 @ 145 mph then I would not stress for most of Minis :) . You could try and fit a T56 to a Mini...but would be complicated lol. 9.85 @ 145mph
|
||||||
|
11046 Posts Member #: 965 Post Whore Preston On The Brook |
13th Jul, 2010 at 09:07:37pm
On 13th Jul, 2010 stevieturbo said:
Std helical gears dont take much at all. I was stripping the input gear and corresponding laygear about once a month until I got fed up after about the 5th time or so and went straight cut. Plus I had run out of spare boxes. I understand your point, but was it a gear set from a 28k 998, with a KAD pinion support bearing, Swiftune lay shaft and Turbo input bearing? I know at some point I am going to break something, but I am not really wanting to go the straight cut route just yet, as this car gets used more on the road. Plus, it will be limited to 0.5 bar boost most of the time, or at least thats what my brain is saying. We shall see whether I listen to my brain after running 1 bar boost 
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........ |
||||||
 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 |
13th Jul, 2010 at 10:35:47pm
Our metro van is running helical gears with s/c drops. Robert guestimates around 140bhp. about 700 miles and counting...
On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it
|
||||||
|
11046 Posts Member #: 965 Post Whore Preston On The Brook |
13th Jul, 2010 at 11:09:12pm
I ran the current transmission with 50 hp straight hit of nitrous, so that was 140 to 150 hp at least, and I ragged the arse off the car at santa pod last august, and on the back roads of Derbyshire all day shortly after.
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........ |
||||||
|
1183 Posts Member #: 6926 Post Whore Accrington |
13th Jul, 2010 at 11:25:07pm
On 13th Jul, 2010 Sprocket said:
I think it has a lot to do with how you bring the power in. Dumping the clutch will shock load the transmission in to submission. I also like to think that these tall final drives generate more loading on the transmission than a short final drive, which is one other reason I am keeping the 3.65 FD at least for now, boost limiting 1st and second gears and feeding in boost on third fourth, to the higher levels above 4k as per Austin Rovers original strategy i was just about to mention that! it depends on how you drive, if you plant your foot when the engine is "engine breaking" then your gonna put a lot of stress on the box at once? When peoples gearboxes have actually broke, has it happened when you had just changed gear or when you are in a gear for a while accelerating then it just goes? might i add that i was using a 2.95:1 FD in my helical box, i have recently bought a SCCR box to swap over too. ive been told by someone previsouly (and this is understandable) that SC boxes are weaker than helical? because when the gears bang together the SC ones would be weaker? am i right in thinking this |
||||||
 3756 Posts Member #: 1709 I like granny porn. LONDONSHIRE |
13th Jul, 2010 at 11:33:34pm
i assume you'l be using a X-pin diff tho colin? On 2nd Oct, 2009 Vegard said:
On 1st Oct, 2009 Jimster said:
I bet my first wank came quicker than your first mini turbo These new modern turbos with their quick spool up time, would make the competition harder. On 15th Aug, 2011 robert said:
phew!!! thank you brett for smashing in my back doors .( not something i imagined writing... EVER) |
||||||
|
11046 Posts Member #: 965 Post Whore Preston On The Brook |
13th Jul, 2010 at 11:36:59pm
On 13th Jul, 2010 rubicon said:
i assume you'l be using a X-pin diff tho colin? You are the weakest link, lol, yes Been running a cross pin diff for a while now :) 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........ |
||||||
|
3756 Posts Member #: 1709 I like granny porn. LONDONSHIRE |
13th Jul, 2010 at 11:40:19pm
thats another main reason helical boxes get ditched as they get destroyed when the Diff explodes!!
On 2nd Oct, 2009 Vegard said:
On 1st Oct, 2009 Jimster said:
I bet my first wank came quicker than your first mini turbo These new modern turbos with their quick spool up time, would make the competition harder. On 15th Aug, 2011 robert said:
phew!!! thank you brett for smashing in my back doors .( not something i imagined writing... EVER) |
||||||
|
3594 Posts Member #: 655 Post Whore Northern Ireland |
14th Jul, 2010 at 12:00:09am
On 13th Jul, 2010 Sprocket said:
On 13th Jul, 2010 stevieturbo said:
Std helical gears dont take much at all. I was stripping the input gear and corresponding laygear about once a month until I got fed up after about the 5th time or so and went straight cut. Plus I had run out of spare boxes. I understand your point, but was it a gear set from a 28k 998, with a KAD pinion support bearing, Swiftune lay shaft and Turbo input bearing? I know at some point I am going to break something, but I am not really wanting to go the straight cut route just yet, as this car gets used more on the road. Plus, it will be limited to 0.5 bar boost most of the time, or at least thats what my brain is saying. We shall see whether I listen to my brain after running 1 bar boost Milage on a 998 I dont feel is an issue. Milage once putting some power through it could well be though. The support bearing ,may help with the centre web cracking problem...but I dont see how it could improve performance in the other end where the input shaft is, nor the turbo bearing ( which obviously I was always using ) Every time I had a failure, it was when using 3rd gear. All the teeth stripped off the input shaft, and corresponding laygear. I never used slicks or any form of sticky tyre. Just 100% normal road tyres. In fact, other than stronger gears, I dont see how any of the parts you mention would improve longivity in the respect of my failures ( aside from the centre web cracking, although that in itself never developed into anything worse ) Once I fitted a Tran-X gear set ( std drops ) this lasted quite a while, although I did pull a couple of teeth of 2nd gear once. Luckly the laygear came away unscathed on that occasion. I'd say yours would alst a very long time at 0.5bar. At 1 bar...depending on torque etc it should still last a while....but the clock will always be ticking. It just depends how you feel about coping with it when it does actually fail. Personally...it annoyed me, but was no big deal. Whether smart or not, I just drove home in 4th. Despite the obvious carnage in the sump, it never transferred any harm to other parts. Although it was usually less than 15 miles to get home. Plus although it was my daily driver back then.....I was 18, so you can imagine how I drove it most of the time lol Certainly not how I would drive now !!! 9.85 @ 145mph
|
||||||
|
136 Posts Member #: 1751 Advanced Member chichester/bognor |
15th Jul, 2010 at 04:41:16pm
on my car,accelarating in second changed to third and second gear shed its teeth and corresponding gear,damaged my crank,took a chip out of a rod and a small chink on the bottom of one of the bores,so i think depends on how luck you are really.
On 30th Aug, 2008 Richie said:
too much my wife says "not that friggin site again" so i pull my pants back up and turn it over to TM.  iam on pretty much every day as i lead a sad existance |
||||||
|
3756 Posts Member #: 1709 I like granny porn. LONDONSHIRE |
15th Jul, 2010 at 05:29:50pm
i reckon colin may use a windage tray? On 2nd Oct, 2009 Vegard said:
On 1st Oct, 2009 Jimster said:
I bet my first wank came quicker than your first mini turbo These new modern turbos with their quick spool up time, would make the competition harder. On 15th Aug, 2011 robert said:
phew!!! thank you brett for smashing in my back doors .( not something i imagined writing... EVER) |
||||||
|
11046 Posts Member #: 965 Post Whore Preston On The Brook |
15th Jul, 2010 at 11:13:20pm
Yes, I use a windage tray.
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........ |
||||||
|
136 Posts Member #: 1751 Advanced Member chichester/bognor |
16th Jul, 2010 at 03:19:37pm
i guess it was on its way out and as i changed decided to shed its teeth.straight cut time for me
On 30th Aug, 2008 Richie said:
too much my wife says "not that friggin site again" so i pull my pants back up and turn it over to TM. iam on pretty much every day as i lead a sad existance |
||||||
 6752 Posts Member #: 828 Post Whore uranus |
16th Jul, 2010 at 04:26:13pm
On 15th Jul, 2010 Sprocket said:
Yes, I use a windage tray. How can you break second gear by changing up into third. the broken off teeth fall into the 2nd gear mesh ? Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM |
||||||
|
3594 Posts Member #: 655 Post Whore Northern Ireland |
16th Jul, 2010 at 06:26:40pm
I guess while on the subject of gears....this has to have been my best work. Same deal....3rd gear blast, then oops. Drove home in 4th.
Edited by stevieturbo on 16th Jul, 2010. 9.85 @ 145mph
|
||||||
|
6752 Posts Member #: 828 Post Whore uranus |
16th Jul, 2010 at 06:50:49pm
damn steve ,thats what i have in the tvr !!! what torque was that ? Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM |
||||||
|
3594 Posts Member #: 655 Post Whore Northern Ireland |
16th Jul, 2010 at 07:16:46pm
Havent a clue. It was my old twin turbo 3.9 I think.
9.85 @ 145mph
|
||||||
|
6752 Posts Member #: 828 Post Whore uranus |
17th Jul, 2010 at 07:07:08am
on slicks ? Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM |
||||||
| Home > Technical Chat > How Much Will A Helical Transmission Really Take? | |||||||
|
|||||||
| Page: |