pi swap on 1998 gt questions

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05-19-2015, 06:21 PM

#11

lizzyfan

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Join Date: Jan 2006

Location: Helaware

Posts: 20,273

Quote:

Originally Posted by dawson1112

But I would think that you could use a thicker set of head gaskets to gain back some of the combustion chamber and keep compression a little lower.

That's the thing, you want the higher compression which helps with the HP increase.

05-19-2015, 08:21 PM

#12

dawson1112

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Join Date: Jul 2012

Location: ohio

Posts: 3,628

Quote:

Originally Posted by lizzyfan

That's the thing, you want the higher compression which helps with the HP increase.

Right I under stand that but he wants to continue to use 87 octane instead of having to go to premium fuel.

05-21-2015, 11:50 AM

#13

swarthyfellow

3rd Gear Member

Join Date: May 2008

Location: NH

Posts: 574

Not a bad idea with the thicker head gasket.

05-22-2015, 03:57 PM

#14

lizzyfan

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Location: Helaware

Posts: 20,273

Quote:

Originally Posted by dawson1112

Right I under stand that but he wants to continue to use 87 octane instead of having to go to premium fuel.

But it completely defeats the purpose of the PI swap.....you'll see minimal gains without a tune and bumped compression, should of stayed NPI

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