Can you run a 11.0:1 compression with 93 octane? Whats the highest compression you can run with 93 octane?

Thanks,

Spiro

 

rsx does that stock


s2k is 11.7:1

[ 07-10-2001: Message edited by: CLpower ]

 

11.0:1 isn't really all that high

 

spiroh,

That's a very general question. Are you planning on running i.e. Motec, DFI, PMS, or any computer management system for fuel and timing? If not you will denotating your engine and in some instances you may not even hear it happening. Give me more info on what your trying to do so I'll can help you.

My mustang runs 10.0:1 compression with 14 lbs. of boost on 92 octane gas and doesn't ping, but I have a Speed Pro computer management system to control everything during a race.

BLOWN 331

 

stop bragging bitch :p

 

I was thinking of doing the 3.5L upgrade and using high compression pistons. If I dont do the 3.5l upgrade I still want to get custom pistons, and use a higher compression to gain more HP. I had no plans on purchasing any fuel management tools. I do have a V-AFC, if that might help.

Spiro

 

CL Power,

That's because a fuel map curve developed by acura has been burned into the chip to accomadate the high compression. Just like the CL type S's. They run I believe 10.5:1 compression and don't ping either. It's all depends on computer management.

For example Scott,

You and I know if we were to put together a V8 motor together with 11.0:1 compression and 93 octane and run it with a carb with no computer it would ping during everyday traffic. Period. Spiroh ask a question that was to general and not specific. I would hate for him to think it's okay to run that high a compression on premium gas without the proper fuel management system.

BLOWN 331

 

CL Power,

Who said I was bragging? I was merely giving a example of computer management. By the way, my Ford mustang runs high tens in the Qtr mile and I'm the slowest in my mustang club.

BLOWN 331

 

How much does fuel management cost?

 

way to fucking much...my buddy went motec on his hatch back..shit was like a coupld grand

 

sorry eric..i didn't know he was talking about the CL specifically...i thought he was just talking about cars in general

 

Spiroh,

Depends on the application and vehicle. They can range from $800.00 to $3,000 dollars. They are not cheap, but it beats blowing an engine and saves you from burning a new chip for every new modification added to you car.

BLOWN 331

 

damn dude, that was your 100th post

 

Scott,

Huh, did not even notice that. By the way, your only 91 away from 5000 posts. Do you have the most posts?

BLOWN 331

 

If you are worried about detonation get a J&S safeguard unit. I had one on my ITR hybrid and it worked great. They are about $500, and it only retards the timing on the cyclinder that is detonating. So you can run higher timing than normal, and it will adjust itself. It also comes with an A/F montior. Endyn (http://www.theoldone.com/) loves to use it on his cars, so you know it has to work. Here is some old info on it that is from the hybrid board. http://hybrid.honda-perf.org/forum/a...ls/jsinfo.html

 

Thats some sweet stuff. I wonder if it would work on the Type S. I read were it said that the Honda/Acura has only changed the wiring once. But who knows in our case.

Spiro

 

I believe this thing ranges in the 1-1.5k range...
http://www.motec.com/m41.htm

 

Yeah it should work with our cars. There isn't anything special than any other OBD2 car. But if you are really intrested call J&S, the guy who answers the phone is the guy who designed it. I think his name is John and his wife's name is shirley hence J&S. Even though they are a small mom and pop company their product is pretty cool. If you get the dual display it shows which cylinder it is retarding an by how much, and under that shows your A/F reading. I had the older model, but supposedly they came out with a new one that has some other features. I became very intrested in it after I cracked the block on my gsr swap. And I didn't want the same thing to happen on my ITR swap. Here are some pics of how bad I cracked that thing. I cracked it on both sides of the block.



I have an 8meg movie of when I took the ITR swap to the track and you can kind of see how I mounted the J&S montior in the dash. I did really shitty that run, I think it was a 14 something, but I weighed 200 and my brother weighs 220lbs plus 17" rims. And don't laugh about the shitty camera work. We had to sneak the camera in with us. And notice the 9000 rpm shifts. Man I miss that car sometimes. http://groups.yahoo.com/group/Honda_....../Happy2.mov

[ 07-10-2001: Message edited by: Achance ]

 

hey achance...what the block guard run? i need one for my b20 block

 

I didn't have a blockguard it just looks like one in the picture. I heard block guards are bad for ya. They don't allow enough coolant to reach the top of the cylinders. And after you tap the guard into place you need to rehone the cylinders because the guard will knock them out of spec by a thousandths of a inch and after that you need to rehone the block surface to make sure it is even with the block guard. So unless you are buliding some turbo monster I wouldn't worry about it. A good page on b20 info is http://www.crvtec.com/ incase ya didn't know.

 

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