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Location:
Eastern Sydney
Registered:
May 2002
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Re: Valve sizing (4A upsize)
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Thu, 03 March 2005 12:57
 
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old corollas: you can open the throats up a little,but I doubt you'de be able to get away with 2mm,or even 1 realistically,without forcing the valve to seat on it's outermost edge,which is risking burnout. some of that meat is there for heat dissipation,it needs to remain.
a good throating job is a must on any head rebuild. you want to get the radius where the port ends and the seat starts to be as smooth a transition as you can,but not at the complete expense of reliability.
Takai: no,I haven't looked at your project,this is the first time I've looked in this area of the forum in about two years.
I'm collecting parts atm for my own engine,which I'm hoping to make about 180-190hp with.
I'll be using a big port head with 288deg cams with 10mm lift,shim under buckets,and 12:1 compression. bottom end will be a mixture of small port and 101 20v. throttles will be either gutted 45mm OER carbs or the 101 20v 43mm ones I have on hand.
depends on how easily I get my hands on a manifold when I go over to japan again later this year.
Justin...
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| | Subject | Poster | Date |
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Valve sizing (4A upsize)
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takai | Thu, 03 March 2005 07:01 |
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Re: Valve sizing (4A upsize)
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oldcorollas | Thu, 03 March 2005 07:08 |
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Re: Valve sizing (4A upsize)
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Bill Sherwood | Thu, 03 March 2005 12:13 |
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Re: Valve sizing (4A upsize)
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oldcorollas | Thu, 03 March 2005 12:18 |
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Re: Valve sizing (4A upsize)
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takai | Thu, 03 March 2005 07:11 |
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Re: Valve sizing (4A upsize)
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IRA11Y | Thu, 03 March 2005 07:31 |
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Re: Valve sizing (4A upsize)
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takai | Thu, 03 March 2005 07:41 |
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Re: Valve sizing (4A upsize)
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fergo308 | Thu, 03 March 2005 11:21 |
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Re: Valve sizing (4A upsize)
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takai | Thu, 03 March 2005 11:54 |
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Re: Valve sizing (4A upsize)
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Meat_rack | Thu, 03 March 2005 12:01 |
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Re: Valve sizing (4A upsize)
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oldcorollas | Thu, 03 March 2005 12:05 |
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Re: Valve sizing (4A upsize)
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takai | Thu, 03 March 2005 12:11 |
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Re: Valve sizing (4A upsize)
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fergo308 | Thu, 03 March 2005 12:57 |
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Re: Valve sizing (4A upsize)
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takai | Thu, 03 March 2005 13:04 |
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Re: Valve sizing (4A upsize)
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oldcorollas | Thu, 03 March 2005 13:18 |
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Re: Valve sizing (4A upsize)
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takai | Thu, 03 March 2005 13:22 |
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Re: Valve sizing (4A upsize)
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Bill Sherwood | Thu, 03 March 2005 22:46 |
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Re: Valve sizing (4A upsize)
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shinybluesteel | Fri, 04 March 2005 07:18 |
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Re: Valve sizing (4A upsize)
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Anthony Kellam | Fri, 04 March 2005 09:17 |
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Re: Valve sizing (4A upsize)
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FKN16V | Fri, 04 March 2005 22:30 |
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Re: Valve sizing (4A upsize)
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ae86drift | Sat, 05 March 2005 04:37 |
