Overbore (81-81.5mm bore MLS performance headgasket) for QG18DE - MotoIQ - MotoIQ - Forums - Technical Area, motoIQ is about geeks and for geeks, here ya go, a geeks playground

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Overbore (81-81.5mm bore MLS performance headgasket) for QG18DE

Last Post 05-29-2012 06:55 PM by llsaw. 24 Replies.

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MotoIQ Newb
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Posts:1

01-02-2012 09:33 AM
Hi! My name is Sergio and i'm new here. I have Nissan Sentra 2001 with a QG18DE Manual transmission i'm about to overbore the engine block and i wanna know ow much did you overbore yours? and, why are you buying non flat bed pistons? Sorry for my english, I'm From Venezuela!

MotoIQ Newb
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Posts:59

05-15-2012 09:31 PM
Build details slowly coming in. Picture and details in my blog http://www.then16files.com/

MotoIQ Staff
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Posts:145

Wisconsin

05-24-2012 08:36 AM
Keep posting the results. Having modded a GA16 to moderate turbo power levels I am curious as to where you wind up. FWIW the revised OEM GA16DE headgasket held 18PSI and 270+ WHP without issue, is the QG gasket that much worse?

MotoIQ Newb
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Posts:59

05-29-2012 06:53 PM
With the cylinder head and valvetrain remaining stock I am targetting 300+ whp. Headgasket is the Ajusa MLS unit. Latest updates up on my blog.

MotoIQ Newb
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Posts:59

05-29-2012 06:55 PM
Sorry Sergio. There is barely any room left in between the cylinders for overboring. You can prob'l safely go up to 0.5mm overbore max.

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