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Old 05-22-2010, 09:25 AM   #1
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Default Na6 , built head how power on stock bottom end

hey guys, Ive been a member here a while and never yet posted.
I'm Dann, From Asutralia.

I am on my provisional licence (so no turbo's or v8's for me quite yet, and no 'performance engine mods') and have just ironed the bugs out of my new drivatrain, which includes a freshly rebuild bottom end, lightened and balanced with oem replacement parts, a good port and polish and a set of reasonable cams (Intake is 260 duration, 8.2mm lift - Exhaust is 265, 8.8mm lift), link Computer, brass buttom clutch and lightened 1.8 flywheel with a 6 speed and (unfortunately 1.6) 4.3 lsd. It also has some other bits and pieces adjustable cam gears different sensors Intake, extractors exhaust etc etc

My question is, I plan on keeping this engine and boosting it for a club racer (its regularly in club hillclimbs atm) and doing circuit days.

Am i stupid to keep this engine and boost it? As i have a reasonable base to start with is it really going to be worth going BP? What sort of power could i expect to make boosted? 220hp?

Thanks in advance,
Dann
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Old 05-22-2010, 09:37 AM   #2
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Welcome to here. A fresh 1.6 will easily meet your power goals.
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Old 05-22-2010, 10:18 AM   #3
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Hey mate thanks for the fast reply. Im looking for enough to keep with the quicker evo's at circuit days, I have plenty of suspension work , but i feel i need more bracing. I have never been in a 250hp mx5 the fastest is a friend of mines 130rwkw supercharged 1.8 NA.

Question is, how quick is 220 hp in an NA, are we talking about high 13's?

Thanks,
Dann
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Old 05-22-2010, 10:45 AM   #4
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Probably mid to low 13's if driven properly.
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Old 05-24-2010, 02:43 AM   #5
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Cheers mate, yeah so its not slow haha. ATM i'm working on getting out racing more in my ae86 rally car but im going to have to start looking for a manifold and turbo soon. again thanks a lot for the quick reply.

Dann
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Old 05-24-2010, 03:21 PM   #6
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220hp in a stripped out race car will def be fast.. And fun
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