Limitations on EJ20 or EJ25 Open Deck Blocks
14 August 2002, 08:05 PM
#1
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Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
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Ive toying with a slight idea, and think I can get an EJ25 engine cheap, if not free.. what sort of limitations are there with open deck blocks, is it gospel that they are better?
Has anybody ever distorted the cylinder bores?
Would you not get better incylinder cooling??
David
<hatching a budget spec engine to **** on all that are about.. (yes that includes you christian!>
Has anybody ever distorted the cylinder bores?
Would you not get better incylinder cooling??
David
<hatching a budget spec engine to **** on all that are about.. (yes that includes you christian!>
14 August 2002, 11:35 PM
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Hi mate 
dont really know much about the open deck blocks, but ive heard that the main issues are with high boost on trackdays, where the headgaskets have more chance of failing when using an open deck.
just thought id add that bit
dont really know much about the open deck blocks, but ive heard that the main issues are with high boost on trackdays, where the headgaskets have more chance of failing when using an open deck.
just thought id add that bit
14 August 2002, 11:36 PM
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The main concern is "bore walk" (common with carless Leeds folk when running high boost.
More likely to blow head gaskets, than distort the block. Cheaper option to semi/closing the block, would be wire ringing.
Mark.
when running high boost.More likely to blow head gaskets, than distort the block. Cheaper option to semi/closing the block, would be wire ringing.
Mark.
15 August 2002, 10:16 AM
#6
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Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
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Lol @ mark... you just wait...
wire ringing the block wont stop bore walk though will it, surely it will just stop / reduce the chances of the head gasket going,
What sort of prices have people been charged for the following..
Semi Closing of the deck (properly.. Heat treated)
Wire Ringing
Reboring
David
[Edited by David_Wallis - 8/15/2002 10:16:57 AM]
wire ringing the block wont stop bore walk though will it, surely it will just stop / reduce the chances of the head gasket going,
What sort of prices have people been charged for the following..
Semi Closing of the deck (properly.. Heat treated)
Wire Ringing
Reboring
David
[Edited by David_Wallis - 8/15/2002 10:16:57 AM]
15 August 2002, 10:34 AM
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David,
Don't know of anyone able to semi/close the deck in this country, yet.
Boring, circa £60~80.
Ringing, £80~100.
Mark.
Don't know of anyone able to semi/close the deck in this country, yet.
Boring, circa £60~80.
Ringing, £80~100.
Mark.
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15 August 2002, 11:45 AM
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Location: Leeds - It was 562.4bhp@28psi on Optimax, How much closer to 600 with race fuel and a bigger turbo?
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pmwl?
Andy You know what I meant... ps.. might have a plate on friday... if I do then Ill let you know..
David
Andy You know what I meant... ps.. might have a plate on friday... if I do then Ill let you know..
David
15 August 2002, 11:54 AM
#14
I know a company that I have used to welding in the past, and as far as I am concerned they are the best welders around.
They weld aly, steel, titanium etc. They weld up aluminium pressure vessel for the company i used to work, which were about 10-11" diameter with a 8mm wall or so and required roundness to stay with 0.05mm.
They are not the most responsive people in the world, but if you send them some pictures and detailed requirements, I am sure they could do it, especially if they thought there was some repeat business.
Task Welding
(023) 9269 0868
Unit 8a, Limberline Rd
Hilsea
Portsmouth
PO3 5BU
Cheers
Paul
They weld aly, steel, titanium etc. They weld up aluminium pressure vessel for the company i used to work, which were about 10-11" diameter with a 8mm wall or so and required roundness to stay with 0.05mm.
They are not the most responsive people in the world, but if you send them some pictures and detailed requirements, I am sure they could do it, especially if they thought there was some repeat business.
Task Welding
(023) 9269 0868
Unit 8a, Limberline Rd
Hilsea
Portsmouth
PO3 5BU
Cheers
Paul
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