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| Home > 998cc > 1040cc turbo is it worth modifying the head? | |||||||
 3341 Posts Member #: 218 Post Whore Bingley, West Yorkshire |
20th Mar, 2006 at 08:12:11pm
Hi im in the middle of building my 1040cc turbo and going to be putting it in in the next few weeks hopefully. Im using a T2 turbo with a mirage manifold.
Previous Engine: 1040cc Morespeed engine, 1275 turbo head T2 Turbo Mirage Manifolds Megajolt
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3341 Posts Member #: 218 Post Whore Bingley, West Yorkshire |
20th Mar, 2006 at 08:37:17pm
right sorted then ill give it a go with standard head to start off. Ill give it a refurb though, will standard valve guides be ok? Previous Engine: 1040cc Morespeed engine, 1275 turbo head T2 Turbo Mirage Manifolds Megajolt
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3341 Posts Member #: 218 Post Whore Bingley, West Yorkshire |
20th Mar, 2006 at 09:10:28pm
cool ill get benross to look at it, also taking will's advice on the valve guides and using Avonbar Phosphor Bronze guides Previous Engine: 1040cc Morespeed engine, 1275 turbo head T2 Turbo Mirage Manifolds Megajolt
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 7765 Posts Member #: 74 I pick holes in everything.. Chief ancient post excavator |
21st Mar, 2006 at 07:50:27am
Check the compression with a standard 940 head. If pistons are almost flat, the compression will be sky high with a std head. On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem. |
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 3329 Posts Member #: 184 Senior Member Melton Mowbray, Pie Country |
21st Mar, 2006 at 08:41:56pm
The compression is not sky high with a standard head and pockets, but we had the beake removed to get the compression down, and 7cc pistons. Took us to about 8:1. I think some chamber work will be needed if you want to run high boost. http://www.twin-turbo.co.uk
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3341 Posts Member #: 218 Post Whore Bingley, West Yorkshire |
21st Mar, 2006 at 09:17:28pm
yeah and benross is going to have a look at the inlets/outlets i think Previous Engine: 1040cc Morespeed engine, 1275 turbo head T2 Turbo Mirage Manifolds Megajolt
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3341 Posts Member #: 218 Post Whore Bingley, West Yorkshire |
22nd Mar, 2006 at 09:08:54pm
cool that would be great!
Previous Engine: 1040cc Morespeed engine, 1275 turbo head T2 Turbo Mirage Manifolds Megajolt
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7765 Posts Member #: 74 I pick holes in everything.. Chief ancient post excavator |
14th Apr, 2006 at 10:00:54am
On 21/03/2006 20:41:56 Ben H said:
The compression is not sky high with a standard head and pockets, but we had the beake removed to get the compression down, and 7cc pistons. Took us to about 8:1. I think some chamber work will be needed if you want to run high boost. I've just done a head for a friend, using 19cc head and 6cc pistons. (standard A ones) With the pistons 0,5mm down the bore, the compression is around the 9,5-10 IIRC. Using a 21,4 cc head (std 940) compression will still be over 9. I agree, this is not sky high, but possibly too high :) On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem. |
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