yes i realize that at 11.6:1 my compression ratio is really not ideal for forced induction, but i feel that with the right engine management and enough fuel it should be more than possible. after having pulled the engine twice and spent plenty on engine building i really don't want to pull it apart again to put in some custom pistons. i'm not looking for crazy boost and close to 300whp would be more than enough for me. i have a feeling that a vortech might be more manageable then a turbo, but i want to get the opinion of some people with EXPERIENCE in this. as always i want to stress that i'm not looking for opinions, but facts from experience. if you're curious about my setup, see the link in my sig.

also, i need to keep this streetable and running on 93 octane.

thanks all

[edit] also, i'm new here but a veteran at g2ic.com. just want to add that lest anyone think i'm a n00b


[Modified by habitforming, 11:27 PM 11/6/2002]

 

It's pretty high, but it can be done.

Not too much boost though....

Ask MatT3T4

 

Timing, octane, temperature are the things that first came to mind. You are going to have to run some severely retarded timing. Even though I would rather have a mid-to-high compression motor personally, I think 11.6:1 is way up on the HIGH end. However, it is do-able. On 93 octane though, I am really not sure how it would react, because it would have a lot to do with temperature too. You want a really cold intake charge when you do something like this.

When I was at SEMA, I found a new product that totally made me sport wood. I forgot the name, and the company, I will have to look when I get home...but it is an intake charge cooling system that utilizes a conical piece of aluminum I thing, hooked up to some gas that cools the aluminum, which sits in your intake piping. I can't really describe it now because I don't remember the logistics, and I am about to leave work. I will look for the brochure when I get home, and post up. This one product, I think, could possibly be a saving grace for us compression junkies.

Anyway, I'll be back later tonight to say some more, but don't be dismayed, your project is possible.

 

i've got 11.6:1 on a b16a turbo civic making 300 on pump gas its not that difficult

 

300 Hp...how much boost are you running with an 11.6:1 CR?

 

brian b, more info pls

 

u can definatel nitrous that motor and make it a killer. you wont have to stress as much as w/ turbo...ie awesome tuning. this is MY OPINION. others may think differently but ive seen 2 deep 12 sec cars w/ 11:5 cr and n20.

 

sure you do...I run 25 psi daily driven no big deal.

 

well i go to the track all of never, and i want daily usable power. i'd say n2o is out.

 

Talk to stoopid, he posted a dyno sheet of a itr that he tuned, if i remember correctly he was making close to (289whp) 300 hp on pump gas and only about 6psi of boost.i think he posted it on superhonda.com
Not quite 11.6:1 compression but it's up there

 

just pony up the extra money for 110 gas

 

Not sure about you but i don't think most people can afford $5.35(110 pump gas) per gallon of gas on a daily driver. or want to spend that much.......

 

I helped brian tune his car and I believe the boost was at .8 bar and the car sounded good, no signs of detonation, and the AF was 11.6:1.

I dont know all teh details of the setup, arias pistons, crower rods, fully built head, stock sleeves, IP manifold, tial WG. t3 t04e .57 trim and Apexi power FC

jason

 

i think you need to re-think your compression ratio, or stick with nos, or run methanol....

 

well if comptech can make a bolt-on supercharger for the s2000, then i think light boost shouldn't be a problem on my motor. their s/c makes up to 100 more whp.

also, if i go with a .057" head gasket i can get down to 10.8:1, which is much more doable. so let me reask my question for that compression ratio.

 

Yep, thats most of the setup.. everything is heat coated by Polydyn so I was able to lean out the mixture a bit since the last time we tuned it. I should have the turbo back today or tomarrow and the new tires will be here, I hope the boost loss was somehow in the turbo and not in the gasket/head bolts..

 

Definatley pheasable!!!!!!!!! I am doing my swap tomorrow going from a stock gsr to a lsvtec running about 11:5:1 pretty close to your ratio. (tony1) a tech from jotech is building my motor and i am boosting it with a revhard 2c turbo kit. To lower the compression i bought a hks headgasket which is thicker than stock and will drop compression about 1:5 bringing me to around 10:0:1 and you 10:1:1. finre for boost. let me know how you work out!!

 

Uhhh did you get the post mixed up about AF and Compression ?? I could no see someone boosting .8 bar on a 11.6:1 Compression.


As for the headgasket Idea. Its very good. Though I didnt know HKS made one. I use the inline pro, it works very well to drop compression.

 

no i run 11.6:1 compression (calculated, not guessed randomly) and right now i'm running about 12.5:1 AF ratio and .85 bar right now.. makes pretty decent power

 

So your saying you run 11.6:1 Compression with the turbo. Or are you saying that you have 11.6:1 Pistons in your car and you are boosting .85 bar?

 

Yes I had Arias build me a set of 6.6:1 compression pistons

 

WHAT! Why So low????????????????

 

I'm sorry I forgot you couldn't see me laughing when I typed that..

I'm using 11.6:1 static compression with something around 12psi of boost (12 / 14.7) + 1 x 11.6 = 21.07:1

 

The cooling product that I was talking about earlier is made by DEI, and it is called the Cry02.

It is a 5lb. bottle of compressed LN2. You can get three lines...one to spray your intercooler, one to spray some other **** that I forgot, and one to spray a teardrop shaped piece of aluminum (I think), that is placed in the intake tract. The LN2 freezes the aluminum and transfers the heat into it.

I wish I had some pictures, it is really, really sweet. The teardrop system is said to drop intakc charge by 35% alone. This kind of system could be a GREAT thing for compression ****** like myself.

It is slated to hit the market in Feb. of 2003, and there hasn't been a mention of it on http://www.designengineering.com yet. I saw this product at SEMA. As I learn more about it, I will let you guys know.