So I have a 04 auto with a sc.
I just blew the motor and need some advice on rebuilding it.

I've been reading and can't seem to find any conclusive answers. I want to build for more strength over stock without really breaking $1500 in parts.

I've heard of using 05 RL pistons with 02-04 odyssey crank & rods

Is this a feasible option or is there something else I should do?

Any advice is greatly appreciated.

 

If I were you I'd just grab a J35 out of a MDX..

I believe it's the J35a5 you'd be looking for. .

 

define blown, would love to learn more, also the direction you go in.

 

OP, you wouldn't happen to be from the DFW area in Texas would you?

 

How much boost can the j35a5 handle?


By blown I mean cylinder 2 dropped compression completely and I'm getting constant misfire across all cylinders if I can get the engine to turn over.


And lastly I'm from the New York area

 

you might as well just get new aftermarket piston and rods. Anything OEM will not handle boost for a prolong period. There 2 thread with turbo TL-s that both blew.

 

buy a used j32a3, change the ring gaps and drop it in. Your budget of $1500 won't get you forged internals for a J-series. Do you know why your motor blew? You are going to have to figure that our first.. forged internals will not make your motor bullet proof if something else is wrong.

 

^with the J35, he has more power out of the box & those motors are a dime a dozen..

And you definitely won't get a built block for $1500

 

I'm stopping by tomorrow to see what exactly happened, I just want to be prepared.
I don't want a crazy amount of horsepower, rather just a stronger engine. I don't plan on running more than 4lbs but would like the option to run more safely in the future. (8lbs?)

So far from what i understand i'm only losing compression in cylinder 2 due to rings. Rather than drop in a used engine or replace with factory rings I thought it would be smarter to build up the engine with stronger factory parts.

The 05 RL pistons & rings with 02-04 Odyssey crank, rods & bearings would come out to around $1700 new. Would this be a stronger option over stock?

I guess the term "built" was used too loosely lol. Stronger than stock is my main goal.

 

Also i've had this car for a little under a year. Bought it with 56k and currently have 59k. Supercharger has been on the car less than 1k. Once the weather in NY got colder, below 30 degrees, i've had nothing but misfires at idle.

I'm pretty sure the guy who had the car before me beat on it a lot more than i thought.

 

Tough call, you are going to have to see what the more experienced forum members say. If it was me I would just purchase another j32a3 to get my car going and build something on the side with the pulled motor.

 

Ditto.

Not sure on the RL pistons. There have been 2 turbo Type-S' here that have broken skirts. Not sure why the 3.5 seems to do that more so than the 3.2, but I would definitely go the way 6spd said.

Oh, and a tuning solution...

 

I broke ring lands with 8lbs of boost on a stock j32a3.

You could try contacting Rodney Brown to get his take on intermediate builds. He ran forged pistons with stock rods @ +400hp on his vehicle with no problems. I'm pretty sure he reduced the C/R to gain that safety factor.

If the bottom end and cylinders are ok you should be able to do this within your $1500 budget.

If you are only running with the ACS for tuning, you might as well just go used and keep replacing motors. As everyone points out, you need a good tuning solution.

 

Thanks for the help

Right now I'm using a AEM fic for tuning, not the comptech acm.

I don't plan on boosting anymore but figured might as well have the option for the future.

Going to see the shop today and figure it out

 

To keep everyone updated

Think I'm going to throw another j32 in, sell the car and go with a 6 speed

Why build the engine of I'm stuck with an auto...

 

^ there ya go. Best answer

 

 

My indecisive self can't decide what to do yet again

I ordered an engine with 61k and it got cancelled on me. I'm still looking around but no luck.

I contacted JE for custom Pistons 10:1CR and thought about going that route but my mechanic is telling me they'll cause too much knock? Anyway to minimize this? / eliminate? Btw the Pistons would be $1050


Custom Pistons seems to be the best route to go if I keep the car (only boosting 4psi maybe 6 later).

 

I also plan on using a snow performance methanol injection stage 2 - if that matters at all

 

Did your mechanic say why there would be more knock? Forged pistons require more clearances so you're going to get piston slap before they are up to temperature....

The only way to eliminate this is to go stock with stock clearances.

 

I was basically told I have 3 options:
1) fully built (not in my college student budget )
2) rebuild with stock components
3) used engine

Personally I thought just forged Pistons with a slightly lower compression ratio would be my safest/most reliable option.

Of course I'm not a mechanic or engine builder so just me guessing and researching

 

I would not build the motor and change components that affect VE when the tuning options are so limited. I would do as 6sp-Gerco said and buy a used motor and increase the ring gap if you stay FI. If not, put a stock motor in it, return to stock, sell it and buy a 6 speed as you originally said.

In any scenario, if I were building for FI, I would go 9.5:1 at most, but that's just me.

 

just get a used motor with low miles.

 

Just sucks when the "smart" thing to do isn't what you really want to do lol

I have a lot of money in this car and don't know if I have it in me to start all over for a 6speed. I'm pretty sure if be better off forking over 4k on a swap then selling this.

Thanks for the input, guess I have no choice but a used engine for now.


Quick mods list:
PnP IM and runners, pcds, Jpipe, exhaust, tein coilovers with edfc, bbk, Ron Jon body kit, Mugen GP wheels, supercharger and full sound system.

And my budget sadly doesn't allow me to buy a 6 speed and swap everything over

 

Can you get an auto loan for the 6spd?

Then swap everything over, sell the auto and put the money towards the loan.

 

My credit isn't good enough for a decent loan yet. Most I'll be able to get is 8k. Not enough for a low mileage TL in New York.

 

I say just get another j32a3 and do the ring gap first. That way you have a running car. 6spd swap can always be done later or trade in. First thing first is having a car that works.

 

If I'm changing the ring gap, wouldn't it be cheaper to just rebuild my engine?

$800 for a straight engine swap
$950 to rebuild plus machine shop fees
^ my mechanics prices

 

Rodney Brown initially ran Wiseco forged pistons with stock rods and turbo @ 420hp or so using a FI/C for tuning. You could try contacting him for details although this may ignite a flurry of emotions for some. Regardless of his business history, he and his associates are able to put together some good stuff.

 

Do you have any contact info ?
I've tried searching him but never come up with anything

 

Tl20046speed@yahoo.com. He was helping someone with one of the ECU's pretty recently I believe.

 

Thanks! I emailed him. Hopefully he answers

 

Sometimes you have to travel a bit... here is one being sold right here on the forum

https://acurazine.com/forums/member-...lly-pa-927158/

 

depends on how badly the motor is blown. Hole threw a piston, damage ring land, or throwing a rod is $$.

 

no he won’t lol. Less power on the j35’s that are direct bolt in. Not sure why guys are doing this. Makes no sense.