GAZZUZZ:
I think you should ask a honda person what to expect, I checked this link but its not very specific http://en.m.wikipedia.org/wiki/Honda_J_engine my thoughts are that you might have to use most of your intake and exhaust parts from your old engine. Let me call up a few honda people.

Disloman, luvinghubby your help is needed.

Siena:
I'm not sure what the differences are between the J30 and J35. Physically the J35 will bolt up to your transmission, but I have no idea what else may be different. Honda gave the engines different codes for a reason.

To make your life easier, please get the CORRECT engine for your model year. If a J30 came out, slap a J30 back in.

chillex8:
J30 is a V6 3.0 Litre engine which comes in most honda accord, and Honda odyssey 1997-1999. There are variants of this engine.

J35 is V6, 3.5 Litre engine which comes in a Honda odyssey 1999-2001, honda pilot, acura mdx et al .

Look for a J30 engine. There is a difference in mpg for both engines.

There is no harm in using a J35 engine, tho. But anticipate lower mpg.


Personally, I'll go for the J35 engine. It churns out more hp. Up to 240hp for the highest variant..

P.S, I did a J30 transplant on my honda oddysey 2001. I got improved Mpg, and drop in power.

Siena:
The J35 may well have a 500cc advantage over the J30, and more power, but that is based upon it being run with the right ECU. The 3.0 ECU is not optimised to run the larger 3.5.

Different camshaft profiles, different injectors, fuel and ignition maps. The J35 can end up delivering less power in the Accord, due to lean running, incorrect knock control etc.

disloman:
frm ur comment posted,what will b ur advice?

chillex8:



I knew you would turn-up.

My trap caught you

Anyways, like I replied earlier.. He should look for a J30 engine.. But a J35 engine won't do any harm.. Only extra power and reduced mpg..

Personally, I was getting 18mpg city driving and 23mpg highway on my 2002 odyssey with factory J35 engine.

I replaced the engine with a J30 engine and guess what?

I got 19 mpg city driving and 25mpg highway.

Am sure the OP has mounted the J35 engine already, and it worked.

hkwills:



I did nt buy d J35 engine
In search of J30 engine
Really don't want to complicate issues with the car .really want to go with d advice of gettin a compatible engine for d car
I really appreciate all ur effort of bring ideas together, and for d research u all did for me.wud keep u all posted

chillex8:



I knew you would turn-up.

My trap caught you

Anyways, like I replied earlier.. He should look for a J30 engine.. But a J35 engine won't do any harm.. Only extra power and reduced mpg..

Personally, I was getting 18mpg city driving and 23mpg highway on my 2002 odyssey with factory J35 engine.

I replaced the engine with a J30 engine and guess what?

I got 19 mpg city driving and 25mpg highway.

Am sure the OP has mounted the J35 engine already, and it worked.

disloman:
check what u wrote n see how they relate.Where were u trained?

chillex8:


Lol...

THIS-LOW-MAN

This is what I have done. And it worked years after.

Even on honda forum, forumites do same.

What's your bone of contention

Is this about the AVALON vs EVIL SPIRIT bash?

You don't sound professional sef.

disloman:
don't av anything against u bro.Mi don't sound professional?but u that do,replacing j30 engine with j35?don't av to but my record speaks.

chillex8:


Replacing J30 with J35 is POSSIBLE.

Its done everywhere, consciously and otherwise.

I have replaced j35 with J30 on my personal Van.. Its still serving the current owner.

I have also slapped in a complete J30 engine and transmission into a 1999 odyssey.

Same harness.

Same ECU.

It was a plug and play.

And it worked.

This is HONDA.

eherbal:
make una reply me o

chillex8:


Where is your thread

eherbal:
thread kë. Man mi check out my post na!na taxis dey help before for another thread, but I no fit locate am. No show yaself my both. Help a brother

eherbal:
thread kë. Man mi check out my post na!na Gazzuz dey help before for another thread, but I no fit locate am. No show yaself my niggá. Help a brother

chillex8:


Replacing J30 with J35 is POSSIBLE.

Its done everywhere, consciously and otherwise.

I have replaced j35 with J30 on my personal Van.. Its still serving the current owner.

I have also slapped in a complete J30 engine and transmission into a 1999 honda odyssey.

Same harness.

Same ECU.

It was a plug and play.

And it worked.

This is HONDA.

Siena:


Bro, I'm not saying a J35 motor won't run with a J30 ECU.

It will. But it will NOT operate at its optimum. If you're happy to have a can that drives, without bothering about fuel, ignition and timing maps, then it's a good swap. One thing is certain - the J35 will NOT produce the same power with a J30 ECU.

Contrary to what you posted, the ECU's are NOT the same. Different part numbers, as can be expected. Both these engines have different camshafts, so the duration and timing WILL be different. So will the fuel requirements, the injectors will be bigger on the J35, and the pulse duration (duty cycle) will be wider.

In summary:

Running a J35 on a J30 ECU will result in under-fuelling, lean-running, hot-running and detonation. In extreme cases, resulting in damage to the piston crowns, burnt-out exhaust valves, and damaged spark plugs. Damaged spark plugs could end up with the electrodes breaking off, and dropping into the cylinders. The result? Scored cylinder bores, and excessive oil consumption.

Running a J30 on a J35 ECU will result in over-fuelling, hesitance at low to medium throttle openings. In extreme cases, resulting in bore wash and gasoline-diluted oil, eventually leading to premature piston ring and bore wear, and damaged crankshaft journals due to gasoline-diluted oil.

chillex8:


Now you are going by the books..

Am being practical here.

It was done and the vehicle is still running, 3 years and counting.

Siena:


I always go by the books, I can't afford to do otherwise, it keeps my clients happy, and compensation costs down. I consider both long and short-term issues.

Unless I'm carrying out a conversion, at a client's request, I will ALWAYS replace like for like. If I had to install a J35 in a vehicle that left the factory with a J30, I would replace the J30 ECU with one for the J35. Nothing else would suffice.

Now that's being practical.