lx power
My car is an lx but i did the ex head swap i think that is the best think to do because you get v tec and lower compression. Plus the lx tranny gears are longer i believe. Yeah you could get 180 whp pretty easy
Last edited by Michalo187; Nov 15, 2005 at 11:14 PM.
Well its no price really. Its what you can find and where you can find it. A head here typically goes for 200 plus shipping if your lucky you can find a good deal. Then you need a emanage or a vafc to control the v tec. Pm me if you need help or have any questions
yeah those are some good numbers from an lx. hopefully by next week i will have good numbers because i am going to buy the aem ems
Edit: O i just realized my first post on hear i said Motor swap i swapped the head. my bad hahahahaha i don't know what i was thinking
Edit: O i just realized my first post on hear i said Motor swap i swapped the head. my bad hahahahaha i don't know what i was thinking
Joined: Jul 2003
Posts: 30,677
Likes: 1
From: Dallas, PA
Rep Power: 607 
Originally Posted by jackburton
I thought swapping the head would raise compression?
Nope.......the head has nothing to do with compression, unless you mill the head in which will give you more compression.
Retired - SoCal FI Mod
iTrader: (4)
Joined: Jan 2002
Posts: 3,139
Likes: 0
From: Boston, MA
Rep Power: 0
Originally Posted by Slow Gold
headgasket size and how far you mill the head will play a big part in raising or lowering compression
So when you put a k20 head on k24, the compression stays the same?
Milling the head raises the compression? I do not get it.
I think I get it now.
Milling the head raises the compression? I do not get it.
I think I get it now.
Last edited by jackburton; Nov 16, 2005 at 01:35 PM.
DONT PANIC
iTrader: (2)
Joined: Dec 2004
Posts: 2,201
Likes: 1
From: California, Palmdale
Rep Power: 285 the thing that changes the compression ratio on the head is the physical size of the combustion chamber.
If the combustion chamber on the new head is smaller than the one on the old one, then you will raise the compression. The Inverse is also true.
Now, i am not sure about the K20 and K24 head, seeing as ive never seen the combustion chamber on a K24. But i do have both EX and LX heads sitting in my garage. They appear to be pretty much identical (besides the fact that the EX has an EGR valve and a Vtec system). I do not think that swapping from an LX to an EX head will yield a considerable change in compression.
But i do have something to say about doing the swap.
You really should use the EX computer when you do the swap. The fuel trims and ignition timing for the LX is set up for the LX cam profile. The EX ECU sets up the fuel trims and ignition timing for the ex low-vtec and high-vtec cam profiles. If you use the LX computer with the EX cam, you will have too much fuel at some points, too little at others. And you will have too much timing at some points, and too little at others.
You can tune all of that out, but if you just start with it right, then that is less tuning you will have to do since you are already starting at on higher grounds.
If the combustion chamber on the new head is smaller than the one on the old one, then you will raise the compression. The Inverse is also true.
Now, i am not sure about the K20 and K24 head, seeing as ive never seen the combustion chamber on a K24. But i do have both EX and LX heads sitting in my garage. They appear to be pretty much identical (besides the fact that the EX has an EGR valve and a Vtec system). I do not think that swapping from an LX to an EX head will yield a considerable change in compression.
But i do have something to say about doing the swap.
You really should use the EX computer when you do the swap. The fuel trims and ignition timing for the LX is set up for the LX cam profile. The EX ECU sets up the fuel trims and ignition timing for the ex low-vtec and high-vtec cam profiles. If you use the LX computer with the EX cam, you will have too much fuel at some points, too little at others. And you will have too much timing at some points, and too little at others.
You can tune all of that out, but if you just start with it right, then that is less tuning you will have to do since you are already starting at on higher grounds.
This is my LX engine.
Before internals I was pushing 180hp on nitrous.
After internals we hit 223 with turbo and e-manage.
My goal is 250hp with AEM EMS.
My tuner was quite impress how the D17 was taking a lot of punishment on the dyno and posted good numbers.
Before internals I was pushing 180hp on nitrous.
After internals we hit 223 with turbo and e-manage.
My goal is 250hp with AEM EMS.
My tuner was quite impress how the D17 was taking a lot of punishment on the dyno and posted good numbers.
DONT PANIC
iTrader: (2)
Joined: Dec 2004
Posts: 2,201
Likes: 1
From: California, Palmdale
Rep Power: 285 supermex......
where did you get that additional injector holder? I have been looking at different ones, and i am in need of 4 of them.....
the closest thing i have found to what i need is $64 each.
where did you get that additional injector holder? I have been looking at different ones, and i am in need of 4 of them.....
the closest thing i have found to what i need is $64 each.
I understand that by milling the head you can raise compression. I also understand that compression has to do with the size of the combustion chamber, that is why lower compression pistons have dips in them.
Now I do not understand why the compression on the d17a1 is lower than a2 if the head is the same. I would appreciate any input, I feel like an idiot.
Now I do not understand why the compression on the d17a1 is lower than a2 if the head is the same. I would appreciate any input, I feel like an idiot.
Last edited by jackburton; Nov 16, 2005 at 07:19 PM.
Originally Posted by turboengnr
supermex......
where did you get that additional injector holder? I have been looking at different ones, and i am in need of 4 of them.....
the closest thing i have found to what i need is $64 each.
where did you get that additional injector holder? I have been looking at different ones, and i am in need of 4 of them.....
the closest thing i have found to what i need is $64 each.
The guy had it in his tool box.
DONT PANIC
iTrader: (2)
Joined: Dec 2004
Posts: 2,201
Likes: 1
From: California, Palmdale
Rep Power: 285 damn.... o well.
ok. lemme do a quick explanation of compression.
lets say that at BDC (bottom dead center) your cylinder holds 10 cubic feet of air. Then at TDC (top dead center) your cylinder holds 1 cubic foot. That means that your compression ratio is 10:1.
The difference between ex and lx is in the piston.
ok. lemme do a quick explanation of compression.
lets say that at BDC (bottom dead center) your cylinder holds 10 cubic feet of air. Then at TDC (top dead center) your cylinder holds 1 cubic foot. That means that your compression ratio is 10:1.
The difference between ex and lx is in the piston.
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
kmarcet
8th & 9th Generation Civic 2006 - 2015
9
Sep 26, 2015 10:25 PM
Dave1984
Electrical, Wiring, and In Car Entertainment
4
Jul 22, 2015 06:10 PM
breanna_17
Mechanical Problems/Vehicle Issues and Fix-it Forum
5
Jul 21, 2015 04:01 PM
