headswap n cams ?
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headswap n cams ?
Alright, so i was thinking about putting a ex head on my lx, and then installing crowers new cams and spring set for the a2 head. Is this a worthwhile upgrade if i can get a ex head for 200$, vafc for around 300+ or so, and then another 500+ for the cam set ? I know my car wont be a racecar or anything, but some extra umpphh would definitely please me... any comments ?
I'm planning to do the same thing... I am also looking into buying a spare short block and resleeving it with darton d16 flange sleeves so that way the engine can handle more boost. But i have a lot of research to do.
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Originally Posted by Blahman240
I kind of want an LX head to go turbo... its better for boost.
Not really........the head has no affect on compression. A EX motor has higher compression vs. a LX/DX. By swapping a EX head to a LX head you are doing nothing but losing vtec while compression remains the same.
Touch it... He won't bite, He'll just come at you pretty quick.
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Originally Posted by civic01vtec
Not really........the head has no affect on compression. A EX motor has higher compression vs. a LX/DX. By swapping a EX head to a LX head you are doing nothing but losing vtec while compression remains the same.
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Originally Posted by civic01vtec
Not really........the head has no affect on compression. A EX motor has higher compression vs. a LX/DX. By swapping a EX head to a LX head you are doing nothing but losing vtec while compression remains the same.
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Originally Posted by dnbguy86
Unfortunately sir, you are wrong. Ex's actually have a compression ratio of 9.9:1 compared to the lx's 9.5:1. I seriously doubt honda choose to go to different pistons in the ex, so its all in the head that changes the ratio. And i think the reason that one guy wanted a lx head saying its better for boost is because a lower compression ratio is less prone to detonation than a higher ratio.
Thats the compression ratio of the pistons, which is located inside the block, not the head. 
Anyways the intake ports are smaller on the LX engine, dont see how this ='s better for boost.
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Originally Posted by dnbguy86
Unfortunately sir, you are wrong. Ex's actually have a compression ratio of 9.9:1 compared to the lx's 9.5:1. I seriously doubt honda choose to go to different pistons in the ex, so its all in the head that changes the ratio. And i think the reason that one guy wanted a lx head saying its better for boost is because a lower compression ratio is less prone to detonation than a higher ratio.
No. You're wrong. Pistons dictate compression differences on d17's.
Last edited by Drk01Civic; Jun 27, 2005 at 09:09 AM.
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You want a higher compression with Turbo right
Dont waist ur $$ and time on swapping an EX for LX head, u will probably lose power. Vtec CAN be good wwith a turbo, even if its higher comp. u will only LOSE power with a turbo if u have to much high compression, then its a bomb. if ur gunna keep ur d17a2 below 10 psi, the Vtec head will be fine. Same thing about Tranny's, unless ur over 10psi, the shorter EX tranny will work fine, if ur going super high boost, start with the LX with lower comp, and longer gears.
sweet. Ya, i hae the D17A1 non-vtec, with a manual tranny. So im stoked to hear i can still do a turbo set-up without swapping the head. Anyone know of a setup for my car? Or am I going to have to make it custom?
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Originally Posted by Echelon04
You want a higher compression with Turbo right?
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Originally Posted by dnbguy86
Unfortunately sir, you are wrong. Ex's actually have a compression ratio of 9.9:1 compared to the lx's 9.5:1. I seriously doubt honda choose to go to different pistons in the ex, so its all in the head that changes the ratio. And i think the reason that one guy wanted a lx head saying its better for boost is because a lower compression ratio is less prone to detonation than a higher ratio.
Unfortunately sir, you are a dumbass. I have built more motors than times you have touched yourself
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Rep Power: 383 im almost thing swapping hte whole ex engine in, because if you only do a head swap then the only difference is the ecu right or is there something else? but if your gonna do a head swap please do an exhaust one as well
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Rep Power: 282 All this talk of head swap, compression, turbo etc is making my head hurt! I would like to know WHO on this site has the brains, credentials and the know-how/experience/wrench head, to put all this heresay to rest and give the REAL low down on what works best, what is **** and what doesn't fvck up your motor, whether it be a non or Vtec SOHC???????????
PLEASE someone has to know this shait and is looking at this post right now and saying "what a bunch of dumbasses....." or something like that.
Honestly, i am going to go to a reputable shop in my city and get some answers from people i know will not bullshit me. Listening to everyone here scares me and really makes me hesitant to do anything. Know one really knows whos legit and whos bullshit? Like I said it is all heresay.
PLEASE someone has to know this shait and is looking at this post right now and saying "what a bunch of dumbasses....." or something like that.
Honestly, i am going to go to a reputable shop in my city and get some answers from people i know will not bullshit me. Listening to everyone here scares me and really makes me hesitant to do anything. Know one really knows whos legit and whos bullshit? Like I said it is all heresay.
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From: Quartz Hill, California, US
Rep Power: 0 I just ordered my Crower stage 2 turbo cam, springs, & retainers today. Tomorrow I'm dropping off my EX head to Exospeed for Port, Polish, Valve job, etc. I should have everything back and ready to install in 2 weeks. Dyno soon to follow install. I can't wait 
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