so i want to do a j swap in a crx. for that tiny car thats a big engine with good power but more is always better right? yes!! Ive been reading about taking a j32 with a j37 rods and crank but j35 or j32 pistons. the cranks are the same besides the strokes.

what i want to do is sleeve the block, stronger crank and rods, better cams, high compression valves and springs with lower end to support that as well. bigger throttle body and injectors with ecu tuning and a big turbo.

i have 2 goals really. Being able to tune engine down to get 40 mpg, so ill prob end up running lean in this high compression engine with maybe a couple psi of bost just to keep torque up. its not meant to go fast in this state just dd.

the second goal is to beat my friends 911 turbo so i can tag his car with what ever i want, like putting a honda logo with a crown on top on the bumper. so a 25psi turbo engine would be great and maybe do the job.

I know motor mounts are required, a set is 500. and the right side of the fire wall (passenger) will have to be sunk in for the turbo. and a single turbo running off the two to one down pipe will be done. a hood scoop will cover the engine that sticks out of the hood and will also push cold air at the turbo( i joked with my friend, force induct my forced induction).

everything else ill have to figure out how and custom axles will be made for the hp of the engine. But if you can help me design the engine and toss ideas my may i would love the help. I want to start building in 4 months maybe so plenty of time to lean what i dont know. and then i will have money for the build, prob over 6 grand. so toss me links and explain how i can figure out it the stuff is to long and will hit the valves or not. ive rebuilt a d15a3 and a gm 350v8 but those were stock build not turbo power builds.

 

24 hours up and no one has come in here to flame you yet?! (they must be tied up redirecting misguided single-cam owners to the joys of B-series ownership...)

your plan, as i'm understanding it is to take a motor that is a bit big for the vehicle it's going in (not a problem on it's own if you're going for "wild and crazy") build it up internally to make even more power, add a turbo in the little room that's left, then detune it all for 40mpg. the purpose of this being that when you see your buddy on the street in his 911 you can crank the boost **** to 25psi and bring shame to him and all of the german auto industry.

when you become an adult you'll see how this is a little silly and, with a budget of 6 grand, unrealistic.

or maybe you're just a troll.

 

im not looking for bashing or piratical lectures, i have a 87 si that gets upper 40 mpg and goes s cheap. for my purpose thats a practical car what im looking for is a toy and a project, ive been thinking about a swap for about a year now and ive chosen the j for the amount of torque it has already. and it was before the Porsche idea too. and 6 grand for an engine doesnt seem that bad of a price since im doing it myself and if i need work done i have a machine shop who is quick and good around my house, and ive never had a problem with them nor people around me. so can i get someone of help please.

 

Build will never happen. How do I know?
The kind of people that actually do these kinds of things NEVER post up asking how to do any of it.

Too much nonsense in the plan and not enough plan and the planner relies heavily on strangers telling him what he should do.

 

all im doing is sensing hate, and not sure if you can read but this is for planning and all the research ive done leads me know where so maybe asking someone who might know something seems like a good idea. but to any of you looking who care to comment on what info ive gathered it seems like i will have be using a j32a block, head, pistons with j35 crank and rods. j32 pistons have higher compression and the valves in the head are bigger too. i think the cams are better in the j35 though so ill have to read about those more. if im to do a turbo the boost will have to be low so like 10psi as far as ive read. ill have to weld my own manifold together if i do that or direct the two pipes off the manis to a single pipe going in to the turbo, glovebox (delete). and basically have a ram air going towards the turbo.

aem makes a ecu for j tuning. but if i can get 400hp ill be happy, 80% efficiency on the turbo setup lands like 430hp off the calculator.

 

"Low boost" & "10psi" tells me you are clueless.

 

lower than i wanted you, gezzzzz. why dont you get out of my thread if you have nothing good to say. 12 is what ive herd the max is on the cast iron sleeves of the j32 as the j35 is aluminum ones couldn't take it. remember this is a BRAINSTORM.

 

[QUOTE=grumblemarc;49040635]"Low boost" & "10psi" tells me you are clueless.[/QUOTE
yet 10psi is a mild boost on stock internals to you and low got you upset

 

On what TURBO is this 10psi going to be run on genius? You can't say "10psi" without knowing that. Only ignorant people say stuff like that. This is turbo 101 stuff.

Start reading the Forced Induction FAQs.

 

im still thinking about the engine before i get to the turbo, i just have a baseline i want. you could recommend one and give me some reasons why to chose it. and i have dude.

 

Then act like you have. Your statement that you are trying to build the engine first and then think about the turbo is also *** backwards. Pick a power goal, then the build EVERYTHING around that. This will be functioning as a unit. Start planning it as such.

Good luck on your pipe dream.

 

lol @ Marc tearing this guy apart.

 

so why not K20/24 turbo? couldn't be any more expensive than a J-series turbo, it has a chance to fit under the hood, almost all the parts you need are readily available in the aftermarket, and with a well planned build and a good tuner you'll be happy with the power numbers.

 

J-Series in a CRX will be an abortion, it's far too big for even an EG IMO.

I don't discredit people who want to be different, but I think this is just not a very realistic plan, that's all.

 

so i found most of the parts i need and will be picking them up in a week or so after i get back from working out of state for Kentucky. all ill need is the axles, radiator, mounts, and shifter pretty much. oo and a crx to put it in but ill have the 6-speed so thats great. ill have a b series throttle body on it most likely and ill have a ram air going to the filter since ill have a scoop because of the clearance issue. after i have the car running on stock ive decided ill buy another j32a2 and build it up however i want so ill have a backup if anything goes to **** when i turbo. when i have the parts and a car ill start a build thread and will have some vids up. but as to why i want a j, its just torque the real power of an engine. and i have a ''practical'' crx already so a toy will be fun. plus i just like doing stuff. i went and rebuilt a 350 not even knowing how cams worked and its sill running so somethings i can just do, grumpy!

 

Cool story.

 

Parts are hard to find for these motors that can handle lots of power. Sand rail guys have been running the j35s stock with a turbo on 8-10 psi with no issues. I myself am in the middle of a j35 swap into a Crx. Will be doing some crazy stuff to it(awd turbo and built). Its an extreme build for fun but not a lot of support for these motors. Most of what we have done to make it work is custom. Dirt track style radius rods to fix caster and such. Front end all cut up to fit the motor too.