The Time Of Boost Is getting Closer

Discuss topics related to the CA18DE and CA18DET series engines.
Ron240sx
Posts: 112
Joined: Mon Apr 26, 2010 1:55 pm
Car: 90 240sx ca18det
89 300zx vg30e

Post

So things get delayed just like plans, hopes, and dreams. I wanted to have my DE boosted by now, but have been over looking possible options of every which way. Still to this point im not for sure of my route. What i do know is in the end of august my hard work and student loans should leave me with some money for the DE. So in the end of august ill be in my engine and transmission building class = The green light for new pistons. So im curious looking around and i find a set on ebay for an 85 200sx ca18et. there still a 1809. They claim there cast aluminum. Any feed back on these or would forged be the way to go. Then for a turbo is my desicion. All honestly i think id still like that t28 Dee sittin on with that manifold. seems like a conservative yet upgraded turbo. Ive been enjoying alot of Mobnes videos. just the sound of that CA is surreal. Ive been looking into some of SDS' programs and im considering using that.
Any input of past experiences would be great.


User avatar
float_6969
Moderator
Posts: 17366
Joined: Mon Aug 26, 2002 1:55 pm
Car: CA18DET swapped 1995 Nissan 240sx (too many mods to list)
2015 SV Leaf w/QC & Bose (daily)
Location: Topeka, Kansas
Contact:

Post

The s12 CA is an 8 valve motor, so I don't know if it will have all 4 valve reliefs that you will nee.

Is the talk of the turbo a question?

I'm a fan of SDS.

TheMAN
Posts: 272
Joined: Wed Jul 20, 2011 10:36 pm

Post

speaking from experience... if money is tight, don't do anything for now.... resist the urge
once you dive into a project this big, costs can easily go to a couple of grand, and you'll either end up some something half-baked or an undriveable car

there's no go reason to take advantage of tech school time for your personal projects now because all you need to do is learn diligently what you need to learn there and apply that knowledge later when the time is right to do your motor build

you have to ask yourself, is it worth the risk now for making your car a POS, or is it better to just get it done right?
one thing is for sure, it is always a BAD idea to make your only car a project car

Ron240sx
Posts: 112
Joined: Mon Apr 26, 2010 1:55 pm
Car: 90 240sx ca18det
89 300zx vg30e

Post

float_6969 wrote: The s12 CA is an 8 valve motor, so I don't know if it will have all 4 valve reliefs that you will nee.

Is the talk of the turbo a question?

I'm a fan of SDS.
turbo talk is a big big question. its been my counter debate the whole time which one i want to use. Personal peferences of yours? and piston related help would be awesome. I know you got some spare parts we talked about.
TheMAN wrote:speaking from experience... if money is tight, don't do anything for now.... resist the urge
once you dive into a project this big, costs can easily go to a couple of grand, and you'll either end up some something half-baked or an undriveable car

there's no go reason to take advantage of tech school time for your personal projects now because all you need to do is learn diligently what you need to learn there and apply that knowledge later when the time is right to do your motor build

you have to ask yourself, is it worth the risk now for making your car a POS, or is it better to just get it done right?
one thing is for sure, it is always a BAD idea to make your only car a project car
This is some better advice and input ive heard on here yet its not. No disrespect when i say this the only risk of making my car a POS is if i were under qualified. If i didnt have the knowledge skills tools or money to do this i wouldnt. And what says i wouldnt get it done right... Its what i want and what i need. See when you get so use to something you crave more and i guess thats what drives my passion for this beloved CA. Who said i only owned one car. My avatar? yeah this is a nissan website i kept it to nissan. Now if i could skip my guidence counseling meeting and refer to what i questioned....

I need to know if these ca18et pistons would work or if i need to look else where. personal perferences?
Im thinking a t28BB sounds right. any other takers?
fuel injectors? 444cc sounds right
Ive been reading alot on ca16de camshafts for ca18det why would these cams perform well in this engine? Higher lift?
Intercoolers?
I need to look more into sds. do you guys personally tune it by laptop computers?
Would a ca18det ecu have all the same pinouts as the DE? Is swapping ecu's possible
Really i have the rest all set and done locked in my mind. its just these few things above im more curious about

TheMAN
Posts: 272
Joined: Wed Jul 20, 2011 10:36 pm

Post

I apologize for insinuating that you had only one car... I was merely stating that if you had only one car, it's a bad idea :) you won't believe how many people out there across different brands make their only car a project car only to bring with them a boat load of trouble :chuckle: I was also speaking from experience that from what I saw from many people over the years, when they operated on a limited budget, they ended up cutting corners and then saying the car sucks and they won't ever buy brand X again, blah blah... I just don't want you to fall into that trap :)

I don't think the CA18ET pistons will work.. there won't be any valve reliefs at the right places... the turbo sounds fine.... 450cc injectors should be adequate depending on the boost level
CA16DE cams are better because they have a more aggressive profile than the CA18DE(T) ones... they have longer duration and overlap

since you are aware of the risks and are prepared for a lot of work/money... go for it!

Ron240sx
Posts: 112
Joined: Mon Apr 26, 2010 1:55 pm
Car: 90 240sx ca18det
89 300zx vg30e

Post

The options and routes daunts and taunts im pretty well aware of.
If that answers my piston question i guess i can narrow it down. I would like to here from Dee or TMS on them.
ecu swap or engine managment?
and if anyone had a two cents on wiring in the fuel injector dropping resistor.

See my tech school is just for cerftification. At are community college the program is set up for an average person with limited to no knowledge of cars. and when they leave have a basic understanding of everything. after this college is through and im making more money i hope to go to a different tech school. where i could dwell a specific

Ron240sx
Posts: 112
Joined: Mon Apr 26, 2010 1:55 pm
Car: 90 240sx ca18det
89 300zx vg30e

Post

Two things and ive got everything nailed. or so i think.
piston wise? i keep reading replace the piston to take compression down to 8.5 1
But ive read in silviaforums from a gentleman named mr.silvia i believe. He claims with a proper tune his DE pistons are holding up on 22 psi
Also in nissanexa forums i was reading on converting the DE loom for a DET ecu.
Which way would be simpler or more effective going for engine management or converting my harness?
also Im going to be in need of DET pistons if the mods lean me away from DE pistons. Let me know on the pistons
It just seems the DE pistons with boost would be so responsive power wise.
Need a right path to take. some slight help would be awesome

User avatar
biosehnsucht
Posts: 1839
Joined: Thu Feb 26, 2004 10:20 pm
Contact:

Post

I was running (and will be again, eventually - the car not the engine is totalled) aftermarket CP Pistons that were "8.5:1" but 1mm overbore, resulting in a theoretical 8.7:1 compression ratio if I remember properly. It was fine as long as it was running right ...


Return to “CA18DE / CA18DET Forum”