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GN I/Cs for Sale - Cheap


Scottie-GNZ

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There have been several posts in the past about adapting a GN I/C for use a FMIC in a Z car. I have seen it done in a 280ZXT and I believe someone else here is or has done it. There are a couple for sale on the Buick forums for $75/ea, so make a move quick if interested.

 

http://www.turbobuicks.com/ubb/Forum11/HTML/001416.html

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Someone else asked me the same question in an email so I will post the response here:

 

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The stock GN I/C is limited in how much HP it can support but the GNers do not really know what that limit is. There are 2 problems with it. When making big HP, the necks are a little restrictive but there is a "Big-neck" kit that fixes that.

http://gnttype.org/techarea/turbo/duttneck.html

 

The other issue is that in the GN it sits between the radiator and the engine!!! What a stupid design! The radiator side is boxed in with air entering the box from the bottom and the engine side has a fan on the crank pulley. Even with that it still gets heat-soaked, defeating the purpose of an I/C. In the Z it would be an FMIC and not have the heat-soak issue. So with the big-neck kit and mounted as a FMIC, it would be pretty darn good. Will it support 450hp? If it is 450RWHP, I would say no if it is unmodified and iffy with a big-neck. What will definitely work is what they refer to as an "I/C and a half". Basically extending the stock core by adding half of another core to it and extending the tanks. If you can weld aluminum or have someone to do it cheaply, you can make a very good and cheap solution. This URL will give you an idea.

http://gnttype.org/techarea/pictureguides/intercoolers/afvsstock.html

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