internal engine prep for d series turbo
Hi everyone, I have a d15b dual carb (non vtec) in my crx. the engine is out and mostly dismantled at the moment for a full recon. I am planning on getting it back together and driving for a while as i complete everything else i want to do to the car. and so i can get comfortable in the car before its too fast since im only 15. i am planning on turbocharging it in the future. what internal mods should i do to it whilst its apart to have it prepared for the turbo? not trying to get crazy power just want something fun. or would it be more beneficial to b swap? please dont tell me to go k series as im not interested. thanks
K would be the best decision financially, selling your current D series parts.
Sleeves are a bigger weak point on D series engines than they are on K or even B, and will become a factor around 300HP.
Tell us more about what your overall, long term power goals are with the car. Keep in mind turbocharging the car will cost several thousand dollars to do correctly, there's no way around that.
Sleeves are a bigger weak point on D series engines than they are on K or even B, and will become a factor around 300HP.
Tell us more about what your overall, long term power goals are with the car. Keep in mind turbocharging the car will cost several thousand dollars to do correctly, there's no way around that.
come on Chance...did you read the last line of his post?OP - You can get a set of forged pistons in a stock-ish compression ratio and h-beam rods for about $1,000. Have your block inspected and if needed, over bore 0.5mm. Install some ARP head studs and some new bearings and you've got a bottom end that will handle a lot of power. If you want a little more peace of mind, go ahead and have the block CSS'd (makes it a closed deck design). The rods are the weak point in the D-series engines - not the cylinders. The rods become a significant risk over about 200 hp. If you can spend ~$2K on the bottom end now, you'll be set up for making a lot of power with your D-series.
I most certainly did, but the young man is 15 and I'mma learn him right 
Edit: Dax you would know better than me - What is the general consensus on the failure point for D series sleeves? As you already pointed out I remember the factory rods are weak as well.

Edit: Dax you would know better than me - What is the general consensus on the failure point for D series sleeves? As you already pointed out I remember the factory rods are weak as well.
Ah, just ignore me, I just get all defensive anytime someone beats up on the D-series, lol. I have heard of some folks getting into the 400's on stock sleeves with stock open deck. I probably wouldn't want to push it much past 300 myself though. But I wouldn't really know...I've been CSS'd from the start.
Hi, im fully aware that im going to be spending a lot of money on the turbo setup, thats why im leaving it for a year or so whilst i paint the car and buy all my suspension parts and drive it for a bit before doing turbo. and i dont wanna go k series cause i like having an engine in it that would have actually been in it (for example b or d series)
come on Chance...did you read the last line of his post?OP - You can get a set of forged pistons in a stock-ish compression ratio and h-beam rods for about $1,000. Have your block inspected and if needed, over bore 0.5mm. Install some ARP head studs and some new bearings and you've got a bottom end that will handle a lot of power. If you want a little more peace of mind, go ahead and have the block CSS'd (makes it a closed deck design). The rods are the weak point in the D-series engines - not the cylinders. The rods become a significant risk over about 200 hp. If you can spend ~$2K on the bottom end now, you'll be set up for making a lot of power with your D-series.
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K would be the best decision financially, selling your current D series parts.
Sleeves are a bigger weak point on D series engines than they are on K or even B, and will become a factor around 300HP.
Tell us more about what your overall, long term power goals are with the car. Keep in mind turbocharging the car will cost several thousand dollars to do correctly, there's no way around that.
Sleeves are a bigger weak point on D series engines than they are on K or even B, and will become a factor around 300HP.
Tell us more about what your overall, long term power goals are with the car. Keep in mind turbocharging the car will cost several thousand dollars to do correctly, there's no way around that.
But...I entertain these guys because we all start somewhere. At some point, somebody didn't just flame my ignorant questions right away, but instead gave good advice and encouraged me to research and learn. This place is also mostly dead, and I like to talk shop, so I'm likely to respond to just about any tumbleweed that blows through.
You got tumbleweed correct.
Kids these days have no interest in cars. And the barrier to entry with the modern computer stuff is extremely high.
What are kids into today? Tiktok and sitting at home alone?
Kids these days have no interest in cars. And the barrier to entry with the modern computer stuff is extremely high.
What are kids into today? Tiktok and sitting at home alone?
I'll take that any day over the "Hurrr how do I make 500hp with $2000" posts. SUPER sick of that ****.
So I guess doing basic research isn't an important part of building a car anymore. Just buy parts, slap them on and make a bunch of threads wondering why things aren't working.
I've got no problem with someone asking questions but you've got to know what you're starting with at the very least, which in his case is probably the worst chassis to start with (like the 7th gens).
I've got no problem with someone asking questions but you've got to know what you're starting with at the very least, which in his case is probably the worst chassis to start with (like the 7th gens).
It's really no different than it was 20 years ago...except it's happening on FB instead of this forum. I remember checking the Forced Induction forum 1 hour after my previous visit and there would be a page and a half of new posts, with lots of them being folks asking the same question over and over and not doing even simple searches. Some kids are into cars. One of my nephews started out in the whole static / tilty wheel thing, and he's starting to come around to be more interested in taking care of the car and get quality parts. He's come to see me race some, and I think that has had an impact on him.
I think that even if you don't identify with the way someone is into cars (like tilty wheels...I don't get it), if you are an *** to them they may not attempt to learn more. If you throw them a bone and show them some kindness and steer them in the right direction, they may eventually come around. I'm just an old long-hair though, so peace and love to all!
I think that even if you don't identify with the way someone is into cars (like tilty wheels...I don't get it), if you are an *** to them they may not attempt to learn more. If you throw them a bone and show them some kindness and steer them in the right direction, they may eventually come around. I'm just an old long-hair though, so peace and love to all!
Hi, thanks to the few people whos pretty much telling me im a *******. i know that d series isnt the best engine, and that dual carb isnt ideal. but i dont care, i want to build one and considering this is a honda forum and im new, i thought this would be a good place to start. i will most likely swap it to efi and get all the wiring an ecu components if i turbo it in the future, i just wanted to know what internals i should do so its capable of handling more power. and im sorry if i didnt do enough research prior to this, but i have tried searching on here and other places but couldnt find what i was looking for. thanks to the people who didnt just start flaming me and trying to put me down and gave good advice. and could someone explain why the ef is the worst chasis to start on?
EF is still a great chassis, but off the top of my head the obvious "issues" with the EF, CRX, and DA chassis is just that they don't have as much room in the bay or front end as the EG/EK/DC2.
In your case it won't be as big of a concern since you're staying on the D series and have a reasonable (relatively low) power goal. Once you start getting into the 400+ zone on those earlier chassis, airflow and overheating start to become much bigger issues to address.
In your case it won't be as big of a concern since you're staying on the D series and have a reasonable (relatively low) power goal. Once you start getting into the 400+ zone on those earlier chassis, airflow and overheating start to become much bigger issues to address.
you were the one who said it is one of the worst chassis to start on. please get off this thread if you aren't going to say anything helpful. tell your father that your sorry your an embarrassment to your family name
EF is still a great chassis, but off the top of my head the obvious "issues" with the EF, CRX, and DA chassis is just that they don't have as much room in the bay or front end as the EG/EK/DC2.
In your case it won't be as big of a concern since you're staying on the D series and have a reasonable (relatively low) power goal. Once you start getting into the 400+ zone on those earlier chassis, airflow and overheating start to become much bigger issues to address.
In your case it won't be as big of a concern since you're staying on the D series and have a reasonable (relatively low) power goal. Once you start getting into the 400+ zone on those earlier chassis, airflow and overheating start to become much bigger issues to address.
Again, dumb child, you've failed at reading comprehension.
"I've got no problem with someone asking questions but you've got to know what you're starting with at the very least, which in his case is probably the worst chassis to start with (like the 7th gens)."
you must live a sad life to be wasting your time speaking to a 15 year old like this
you must live a sad life to be wasting your time speaking to a 15 year old like this
"I've got no problem with someone asking questions but you've got to know what you're starting with at the very least, which in his case is probably the worst chassis to start with (like the 7th gens)."you must live a sad life to be wasting your time speaking to a 15 year old like this
He said 7th gen - which is 2001-2005.







Why do you guys entertain this ****?