b18c turbo build
06-30-2011, 05:25 PM
#1
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Thread Starter
b18c turbo build
Ok...so I KNOW this is one of many topics that has been beaten into the ground, but I find so many threads where people argue and contradict one another over what's right and wrong.
I just want one person who knows what the hell is going on to help me with a build for my crx. It's my first 4cyl build, so things are a little different than what I'm used to. I have a b18c block, b16a1 vtec head, and ls(2.0) crank and rods. Everything is untouched at the moment. Anyone have suggestions on best size/type of piston to get(keeping in mind I'm going turbo), what to bore the block to, and suggested work to the head in order to make this turn serious power(recommendations on cams and such would be nice as well). I'm just new to this market and the sizing and such is different. I'm just getting frustrated, because I'm sitting here with a majority of the parts.
Thank you.
I just want one person who knows what the hell is going on to help me with a build for my crx. It's my first 4cyl build, so things are a little different than what I'm used to. I have a b18c block, b16a1 vtec head, and ls(2.0) crank and rods. Everything is untouched at the moment. Anyone have suggestions on best size/type of piston to get(keeping in mind I'm going turbo), what to bore the block to, and suggested work to the head in order to make this turn serious power(recommendations on cams and such would be nice as well). I'm just new to this market and the sizing and such is different. I'm just getting frustrated, because I'm sitting here with a majority of the parts.
Thank you.
06-30-2011, 06:59 PM
#3
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Re: b18c turbo build
It's going to be a daily driver, but I live in Missouri and we can get away with a lot more. They aren't nearly as strict on emissions, noise, etc.
Last edited by jdfoster02; 07-01-2011 at 01:28 PM.
07-01-2011, 05:21 PM
#5
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Re: b18c turbo build
Biggest question is how much you are willing to spend. Cheap as possible kind of stuff or whatever it takes to get you to your goals kind of stuff?
07-01-2011, 09:09 PM
#6
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Re: b18c turbo build
I'm doing a similar build. B18c bored to 82mm, LS crank, eagle rods, mahle pistons (came with the block, might look at others for lower CR), ARP bolts all over, GSR head. I'm undecided on changing the cams and valves, but I would definitely be putting new springs and retainers on because I'm paranoid.
07-02-2011, 10:06 AM
#7
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Re: b18c turbo build
Then leave, because clearly you have no clue...
Are you wanting 50hp or 5 million hp? Are you running pump gas? E85? C12? Methanol? What's your budget? Hey look, a cookie!...
Up until 400-500hp (depending on variable factors) the COMPLETEY stock heads are fine... Why would you want to bore a motor any more than what is needed unless you have a specific goal in mind? Compression relates back to specific demands/ requirements you have of the motor. Just because it's a street car doesn't make mean it adheres to the law of the land (using pump gas).
You don't specify enough variables to even begin to point you in the right direction. It is clear you don't understand much about motors in general, research your heart out and learn much more before you begin. On top of it you posted in the EF Tech Forum rather than the Turbo forum...
Are you wanting 50hp or 5 million hp? Are you running pump gas? E85? C12? Methanol? What's your budget? Hey look, a cookie!...
Up until 400-500hp (depending on variable factors) the COMPLETEY stock heads are fine... Why would you want to bore a motor any more than what is needed unless you have a specific goal in mind? Compression relates back to specific demands/ requirements you have of the motor. Just because it's a street car doesn't make mean it adheres to the law of the land (using pump gas).
You don't specify enough variables to even begin to point you in the right direction. It is clear you don't understand much about motors in general, research your heart out and learn much more before you begin. On top of it you posted in the EF Tech Forum rather than the Turbo forum...
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07-02-2011, 12:48 PM
#8
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Thread Starter
Re: b18c turbo build
You're right. I know little in regards to 4 cylinder motors. That's why I'm here. Give me an old school v8 and there isn't a problem. Each class of motor has it's own tolerances and specs. Even my friend who builds and races v8s all the time doesn't have the answers when it comes to a 4 cylinder. Most of the v8s we build have the tolerance for a lot of applications with minor adjustments.
If the stock head will hold up to the b18 with ls crank and rods then fine...that's all I needed to know. I was simply looking for suggestions on what would help with the head. Like I said... no... I am NOT familiar with these motors and all the swaps and conversions etc etc. That is why I'm trying to communicate with people that DO. Perhaps if you were less arrogant and wanted the joy of helping someone out...
If the stock head will hold up to the b18 with ls crank and rods then fine...that's all I needed to know. I was simply looking for suggestions on what would help with the head. Like I said... no... I am NOT familiar with these motors and all the swaps and conversions etc etc. That is why I'm trying to communicate with people that DO. Perhaps if you were less arrogant and wanted the joy of helping someone out...
07-02-2011, 12:54 PM
#9
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Re: b18c turbo build
And to mr. hateful...suggest the damn sources of good reading and I would be more than happy to read it. At least the book doesn't give you the information with an attitude.
07-03-2011, 05:58 AM
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Re: b18c turbo build
stock bottome end is good to like 350whp. if you want more, you will want to get sleeves. most people do rods and pistons anyways when looking at 350whp. eagle rods are cheap and popular. get whatever pistonbrand u like. this aint no v8 watch your specs and tolerance stacking isint a big deal. as for turbo sizing it depends entirely on your goals.
good luck
good luck
07-03-2011, 08:59 AM
#11
DO IT ON ALL FOURS
Re: b18c turbo build
stock bottome end is good to like 350whp. if you want more, you will want to get sleeves. most people do rods and pistons anyways when looking at 350whp. eagle rods are cheap and popular. get whatever pistonbrand u like. this aint no v8 watch your specs and tolerance stacking isint a big deal.
For starters, did you realize I asked what your power goals are instead of how much boost you want to run? The same motor running 10lbs of boost could be making the same horsepower as the identical motor running 16lbs of boost (with the 16lbs being safer). If you have to ask why then like I said - you have a long way to go. There are some decent books to read - but as with everything just because the book says it on paper doesn't mean that's how it is in reality. Compressor maps are just one major example; a map could say it's the worst compressor possible but actually gets you the best results when equipped.
All this relates back to what your actual goals are and what you want to do with it. The reason being (other than previously stated) other parts start becoming factors: tire sizes, transmission gearing, clutch engagment vs. grip, stock parts vs. upgrades... The list goes on... Say you want to run 10's in the 1/4 mile - your setup would be a whole lot different if you wanted to run 5's in the 1/8th mile (bad example I know...)... Or if you live where it's hilly or completely flat, or winding roads and you want to have the "ultimate street machine". Given this may seem overkill to consider - but if you want to do it right the first time then you should consider all factors and variables.
In my personal opinion you are off on the wrong foot... If you want a daily I would look at a different setup personally (that's doesn't mean you can't still achieve wicked power).
P.S. Take my "attitude/ arrogance" with a grain of salt. This is the Internet and my typing doesn't always come out how I am talking... Sometimes it's 100% on point though ;-)
Last edited by OneBadTurboCRV; 07-03-2011 at 09:37 AM. Reason: Typos
07-03-2011, 09:33 AM
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Re: b18c turbo build
This isn't true at all... there have been plenty of builds with over 350whp... Ever heard of a LS-T? Anyways, I am mainly a Chevy guy and ppa with Honda's because my kids are into them. I know both sides of the road well - if it has pistons, runs on gas, and is a four stroke - then a engine is an engine just like an engine is an engine. All I am trying to say - if you know one just because another type is different doesn't mean the same basic principles apply.
For starters, did you realize I asked what your power goals are instead of how much boost you want to run? The same motor running 10lbs of boost could be making the same horsepower as the identical motor running 16lbs of boost (with the 16lbs being safer). If you have to ask why then like I said - you have a long way to go. There are some decent books to read - but as with everything just because the book says it on paper doesn't mean that's how it is in reality. Compressor maps are just one major example; a map could say it's the worst compressor possible but actually gets you the best results when equipped.
All this relates back to what your actual goals are and what you want to do with it. The reason being (other than previously stated) other parts start becoming factors: tire sizes, transmission gearing, clutch engagment vs. grip, stock parts vs. upgrades... The list goes on... Say you want to run 10's in the 1/4 mile - your setup would be a whole lot different if you wanted to run 5's in the 1/8th mile (bad example I know...)... Or if you live Where it's hilly or completely flat, or winding roads and you want to have the "ultimate street machine". Given this may seem overkill to consider - but if you want to do it right the first time then you should consider all factors and variables.
In my personal opinion you are off on the wrong foot... If you want a daily I would look at a different setup personally (that's doesn't mean you can't still achieve wicked power).
P.S. Take my "attitude/ arrogance" with a grain of salt. This is the Internet and my typing doesn't always come out how I am talking... Sometimes it's 100% on point though ;-)
For starters, did you realize I asked what your power goals are instead of how much boost you want to run? The same motor running 10lbs of boost could be making the same horsepower as the identical motor running 16lbs of boost (with the 16lbs being safer). If you have to ask why then like I said - you have a long way to go. There are some decent books to read - but as with everything just because the book says it on paper doesn't mean that's how it is in reality. Compressor maps are just one major example; a map could say it's the worst compressor possible but actually gets you the best results when equipped.
All this relates back to what your actual goals are and what you want to do with it. The reason being (other than previously stated) other parts start becoming factors: tire sizes, transmission gearing, clutch engagment vs. grip, stock parts vs. upgrades... The list goes on... Say you want to run 10's in the 1/4 mile - your setup would be a whole lot different if you wanted to run 5's in the 1/8th mile (bad example I know...)... Or if you live Where it's hilly or completely flat, or winding roads and you want to have the "ultimate street machine". Given this may seem overkill to consider - but if you want to do it right the first time then you should consider all factors and variables.
In my personal opinion you are off on the wrong foot... If you want a daily I would look at a different setup personally (that's doesn't mean you can't still achieve wicked power).
P.S. Take my "attitude/ arrogance" with a grain of salt. This is the Internet and my typing doesn't always come out how I am talking... Sometimes it's 100% on point though ;-)
Lets see some pictures of what you have. What B18c is it? the JDM B18c or a B18c1 or what? the JDM B18c has been shown to be solid up to the mid 400 hp range. I am aiming for a safe 400 bhp right now, but will be rebuilding as soon as I can gather the parts to handle a little over 500 bhp.. any more and these cars arent streetable any more really...
07-07-2011, 10:42 AM
#13
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Thread Starter
Re: b18c turbo build
The block is the b18c1. Used to a 302 my first though of course was to stroke it. Kits of course are extremely expensive, so I bought the ls crank and rods(until I can afford more expensive ones) and I will of course fork out the money for good pistons. The real trouble I was wondering was if the block is decked can the head be machined without causing any problems.
It's hard to explain what my power goals are. I'm not rich by any means. I'm not building a track car. Just want to gain as much power as I can without making EXTREME modifications.
It's hard to explain what my power goals are. I'm not rich by any means. I'm not building a track car. Just want to gain as much power as I can without making EXTREME modifications.
Last edited by jdfoster02; 07-07-2011 at 04:00 PM.
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