S2000 Naturally Aspirated Forum Discussions about N/A motor projects, builds and technology.

ITB high compression build idea

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Old Apr 15, 2016 | 08:16 PM
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Default ITB high compression build idea

My plans are to try to always stick to N/A I feel like it's more reliable... Anyway I was think about a F22C: (head) bore, port & polish full supertech value tran, bisimoto cams/cam gears & ITB's. (If you noticed I missed anything please mention it)(I know I'm leaving out small to some key things)
Block:bore to 89mm, pistons @ 14.1, (I keep reading that striker kits tend to make engines unreliable) of course I would have it sleeved, crank balanced & micro polished, aluminum pulleys external water pump & external oil pump with a 8lbs flywheel. Running on a AEM series 2 plug & play ecu. Again: (I know I left out small maybe even big/key things out)(please note those things)
I'm looking for:
Advice
Ideas
What kind of power I maybe looking at
What kind of torque I maybe looking at
Fuel (hopefully E85 will cut it)
Again looking for tips, advice, other's experience etc....
2 last things PLEASE no trashing for this it's just a idea (I want N/A power before I go down easy street & boost it)(not trashing on boost it's just that I've been down that road & I'm looking for something new) & last thing this will be a summer weekend car. No rain No snow. If possible just dry summer days. Thank you
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Old Apr 19, 2016 | 09:11 AM
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Does Bisi make cams and gears for our car?
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Old Apr 22, 2016 | 04:16 AM
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14.1 compression? on pump fuel? seems a bit high. As for bore, start with 87,5 or 88 so you have space for improvment in the future.
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Old Jun 29, 2016 | 09:48 AM
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E85 would deffly cut it. Talking about reliability I would also start off with a smaller bore or even stock bore i mean room for other builds yes but limiting your head gasket surface area is another problem don't forget u can only get away with about a +1mm bore size before you'll have to match head dome with bore size.

Compression does help yes but it's not the end all be all for NA power.

I would keep the compression manageable and have ur fun NA and then when the easy street starts coming around you'll be ready, a good engine builder can make a good NA engine but also spec in "plans to boost in the future" believe me 2yrs ago I spent 10k on a NA monster plenty of room to improve NA but had no wiggle room for FI really, power per dollar will make ur head hurt think ahead is all I'm saying. Drop the bore size, drop the cr. And with ITBs youll have plenty of fun for the time.

Rain or snow isn't a big factor, u put weekend summer car but how long do u want it to last without a checkup, rebuild etc.
A big old cam will drop compression but sometimes getting them dialed in for a street able daily is a pain, vacuum will suffer on idle.
I would start looking at build and message people what they think after it was all said and done, ideas changes etc. Cause that's what I'm doing for right meow. Don't know you knowledge base but just cause u see alot of high cr. NA u better kno why they picked that # and the pros to cons for every decision u make.

Still power per dollar plane and simple go FI, if ur worried about reliability go SC. But my SOS TC kit has been reliable, this is my first turbo kit, I even installed myself. Idk your call but if your staying NA just cuz u think it's reliable but ur gonna build a engine with big ol bore n really high compression and then try to dd/ weekend drive it with ITBs I think it defeating the purpose at that point of staying NA just SC it with stage nothing kits and you'd still hit above you NA goal and much more reliably.
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