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Home > Technical Chat > good turbo head? | |||||||
![]() 1750 Posts Member #: 10190 Post Whore belgium |
27th Feb, 2013 at 09:32:05pm
http://www.ebay.co.uk/itm/MINI-CLASSIC-PLU...121067512532%26
you can do anything if you set your mind to it...
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![]() 10022 Posts Member #: 1456 Mongo Barnsley, South Flatcapshire |
27th Feb, 2013 at 09:52:30pm
I wouldn't touch it. If something is worth doing, it's worth doing half of. |
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![]() 7265 Posts Member #: 1268 The Boom Boom speaker Police! Essex |
27th Feb, 2013 at 09:55:36pm
Wank
In the 13's at last!.. Just |
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![]() 12307 Posts Member #: 565 Carlos Fandango Burnham-on-Crouch, Essex |
27th Feb, 2013 at 09:59:35pm
what are the valve and chamber sizes on your heads?
On 28th Aug, 2011 Kean said:
At the risk of being sigged... Joe, do you have a photo of your tool? http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1 https://joe1977.imgbb.com/ |
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![]() 9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
27th Feb, 2013 at 11:12:59pm
its a head .......... standard to me looking at it with standard small 33 mm inlets & 29mm exhaust size valves ............ the chamber have been opend up a shade............... there is no pics of the ports...... my guess is they are standard
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![]() 4629 Posts Member #: 20 My sister is so fit I won't show anyone her picture Lake District |
27th Feb, 2013 at 11:36:00pm
The chamber work looks really poor on the ebay head, avoid. |
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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 |
28th Feb, 2013 at 07:53:55am
The chambers are visibly different sizes... 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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![]() 6729 Posts Member #: 618 Post Whore Glasgow |
28th Feb, 2013 at 09:11:35am
I've got a damaged bare head sitting in the workshop with the same work undertaken by a turbo expert at the time. must be 15yrs only now.
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![]() 1750 Posts Member #: 10190 Post Whore belgium |
28th Feb, 2013 at 06:02:07pm
I have measured the heads. Some are standard and the others have a valve size of 36mm inlet and 32mm exhaust. The chambers seem unmodified but the inlet and exhaust ports are worked on from some. you can do anything if you set your mind to it...
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![]() 12307 Posts Member #: 565 Carlos Fandango Burnham-on-Crouch, Essex |
28th Feb, 2013 at 06:13:15pm
the large vavle ones might be prone to cracking, On 28th Aug, 2011 Kean said:
At the risk of being sigged... Joe, do you have a photo of your tool? http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1 https://joe1977.imgbb.com/ |
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![]() 293 Posts Member #: 10010 Senior Member Northants |
28th Feb, 2013 at 06:38:12pm
Isn't it best to always keep the 'beaks'? I remember someone saying that they went from a head with 'beaks' to one without, and although the compression ratio was dropped the engine was more prone to knock and less powerful |
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![]() 1750 Posts Member #: 10190 Post Whore belgium |
28th Feb, 2013 at 07:33:11pm
so best is to use standard size valve but bigger and flown in and outlet ports?
you can do anything if you set your mind to it...
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![]() 4629 Posts Member #: 20 My sister is so fit I won't show anyone her picture Lake District |
28th Feb, 2013 at 07:39:17pm
What are you trying to achieve ? The 29.4mm ex valve flows well enough to make good power, though there are gains to be had going with a larger ex valve, but it does reduce the material between the valve seats.
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![]() 12307 Posts Member #: 565 Carlos Fandango Burnham-on-Crouch, Essex |
28th Feb, 2013 at 07:46:11pm
^^^^^ wot he said!
On 28th Aug, 2011 Kean said:
At the risk of being sigged... Joe, do you have a photo of your tool? http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1 https://joe1977.imgbb.com/ |
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![]() 1750 Posts Member #: 10190 Post Whore belgium |
28th Feb, 2013 at 08:16:58pm
i have 4 mini's in total. 1 that i use for most roadtrips with a tuned 998 and a total original mk 1 estate.... the third is a original 1300 from 92... so this one i want to go special... will probably only drive 100 miles a year.... race style blow trough supercharger on a 1293 or 1330 or 1380.... (never been done in my Belgian region so) you can do anything if you set your mind to it...
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![]() 9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
28th Feb, 2013 at 08:52:27pm
On 28th Feb, 2013 Joe C said:
^^^^^ wot he said! the std metty turbo valves are 33x29, going to the MG metro sizes of 35.6x29 is always worth while, and 35.6 x31 is a good option too... but IMO pushing past this is not a good idea on a road going turbo. as joe says.......... i would add, use a head thats is not going to use bigger valves than 35.7mm inlets and 29.5mm exhausts they are usually reliable, because theres enough material left between the two valves. horsepower with these sizes can exceed 190 hp + given the correct other parts combinations. now thats enough hp to grenade your ass out...... ![]() ![]()
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![]() 1750 Posts Member #: 10190 Post Whore belgium |
28th Feb, 2013 at 08:55:24pm
On 28th Feb, 2013 BENROSS said: On 28th Feb, 2013 Joe C said:
^^^^^ wot he said! the std metty turbo valves are 33x29, going to the MG metro sizes of 35.6x29 is always worth while, and 35.6 x31 is a good option too... but IMO pushing past this is not a good idea on a road going turbo. as joe says.......... i would add, use a head thats is not going to use bigger valves than 35.7mm inlets and 29.5mm exhausts they are usually reliable, because theres enough material left between the two valves. horsepower with these sizes can exceed 190 hp + given the correct other parts combinations. now thats enough hp to grenade your ass out...... ![]() ![]() ![]() you can do anything if you set your mind to it...
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![]() 4629 Posts Member #: 20 My sister is so fit I won't show anyone her picture Lake District |
28th Feb, 2013 at 09:30:45pm
Or if you're feeling trick you could offset the larger ex valve. This will leave more material between the valves.
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