kuni808

does anyone know who makes aftermarket forged pistons and rods for the j32a?? i have the 3.2 TL-S so im just curious if anyone else makes a higher compression piston actually looking for a forged one for better strength and maybe a H beam connecting rod? anyone knows?? thanks..

fsttyms1

JE

paul_huryk

I'm sure someone makes them (or will make them custom) - but why would you want to?

You just don't swap psitons and rods and go on your merry way... you need to measure, re-measure, bore the cylinder out (and hone), and balance the rotating assembly (no cheap) and then you won't get squat in terms of power out of it anyway.

The only thing that would help in terms of power would be going to ultra-lightweight pistons and titanium rods (only $3,500 for 6). Even that may give you only 10 more hp.

blk2001tlon19s

You would have to get them made custom. I believe its like $150 for each rod and $150 for each piston. That's about $900 for each set. You would be better off running a J35 swap. No real need for custom pistons/rods unless you are really planning on boosting hard. Turbo and supercharged guys have keep the stock ones for the most part without any problems.

blk2001tlon19s

My bad, Crower should be able to make the rods and JE should be able to make the pistons. Sorry but I forgot to mention that.

Type-T

does anyone sell sleeves for these motors as well in order to boost without fucking up the block?

JimmyTLS

Darton or AEBS should make custom sleeves.

kuni808

i was only wondering cause just incase i find a long block for the j35 then i could do a complete rebuild with aftermarket forged pistons and stronger rods. or if i could not find the j35 block to find a j32 short and rebuild. just wnat something with a little more reliability and maybe a little more compression.

sbuswell

that's cool, sounds like a lot of work and money for not much gain, if any. a while back I was thinking about balancing my engine and porting my heads larger, but come to realize it wouldn't do much good and it would cost a lot of money. upgrading to the J35 is a great idea though. you should see a big HP difference. I wish I had the money because I would do that and swap IM and TB for type S and go FI. Maybe you should go for the J35 block first and take it from there. I also believe the J35 has very strong and reliable pistons and rods so upgrading might not make sense. good luck man!

JimmyTLS

Well the only difference from what I researched are the internals. The bare block is the same but the internals are what makes the displacement larger. So if you were going to get everything custom anyway, you might as well just build it as a stroker motor.

fsttyms1

actually there is a difference in the blocks. the prefered block is the J32A2 (type-s) the sleeves have a special coating on them..

kuni808

Hmmm i did not know that. good to know. but the j35 block will produce more torque correct? if i just swap out the short blocks and put the type s heads on there?? hmm. interesting. too bad a nsx c32 doesnt fit.

fsttyms1

the block wont produce more. using the crank, rods will

here is a link. read all the way thru

http://www.v6performance.net/forums/...ad.php?t=54261

here is a list for different swaps and conversions


BLOCK/HEADS (incl. manifold (upper/lower), tb)
------------------
J30A1/J30A1
advantage: no modification needed.
disadvantage: no torque until turbo/sc kicks in.

J30A1/J32A2
advantage: mid-range and top-end power
disadvantage: J30A1 pistons have to be modified to fit large J32A2 (intake) valves.
Not much torque until turbo/sc kicks in.

J32A2/J32A2
advantage: no modification needed, mid-range, top-end power.
disadvantage: torque is still ok but better than J30A1

J35A4/J30A1 (Odyssey '02-04/ '00-02 Accord V6)
advantage: no modifications needed, great torque, nice mid-range
disadvantage: top-end power

J35A3/J35A3 (Acura MDX '01-02)
advantage: no modifications needed, great torque, nice mid-range
disadvantage: little less air flow than J32A2 but very close.

This option looks like a good choice if getting the complete engine or even separate short block and cyl.
heads/manifold due to a price. And MDX the cyl.
heads are the same part # as CL-S, however intake valves and cams are different than CL-S.

J35A3/J32A2 ('01-02 MDX/CL-S '01-03) or J35A4/J32A2 (Odyssey '02-04/CL-S '01-03)
advantage: great entire powerband and especially torque.
disadvantage: Need CL-S or RL pistons.

There are also couple options:

Option 1
With '01-02 complete MDX block or '02-04 Odyssey complete block (crank/rods/pistons) it is required to purchase 2005 Acura RL
pistons (new set $50 each) This is a best option still since these pistons have clearance for large 36mm J32A2 (intake) valves
thus no modification needed. Despite the fact they have higher 11.0:1 CR still even supercharger can be used here with low boost
up to 7psi intercooled (assuming safe AFR). In addition, if 11:1 CR is too high for you, you can use '03 CL-S pistons with 10.5:1 CR.

Option 2
'01-03 J32A2 block (CL-S)
Required to purchase the following:

-= hondaautomotiveparts.com =-
'02-'04 Odyssey (crankshaft)
Product No. 368270 or
Honda part #13310-PGK-A00

'02-'04 Odyssey (connecting rod)
Product No. 368269 or
Honda part #13210-PGK-A00

Main bearings + rod bearings

-= acuraautomotiveparts.org =-
'03 CL-S (pistons) - 10.5:1 CR or
'05 RL (pistons) - 11.0:1 CR

pistons rings (per chosen model)

Note: Odyssey pistons do not have clearance to fit large 36mm J32A2 (intake) valves. Solution - custom job to increase valve pockets.

BTW, The only advantage to get J32A2 block is due to better cylinder sleeves to withstand heat designed for higher redline vehicle,
otherwise depending on the price Odyssey or MDX block are the best bet.

Keep in mind, J35A5 '03-04 MDX will not fit on 6th gen. AV6/CL/TL/CL-S/TL-S due to different design, and looks like only for 7th gen.
AV6.

mrsteve

iTrader: (1)

You guys are nuts. There's no reason to touch the internals on this motor unless you're doing the J35 swap and even then you can use factor Honda/Acura parts.

This motor has very high horsepower potential (with boost)... however the transmission does not. It really isn't the best platform for high horsepower either. Heavy FWD car... meh. 400whp is the absolute limit for this platform. And your transmission will not even come close to handling that power.

Stick to what's easy and proven. Either the J35 bottom end, the Comptech S/C'er w/HBP, or a combination of the two.

JimmyTLS

Ok fsttyms1, so let me get this straight cuz i been kinda confused about this for a long while but keep forgetting that i need to research it. So for the 3.5 liter conversion to work on my 03 TL-S, I will be using a J35A3 block and just swap the J32A2 internals and throwing on the J32A2 head? Minor modification needed of course.

And just out of curiosity, what are those modifications?

mrsteve

iTrader: (1)

No. You use the J35A3 block and internals (crank, rods, bearings, etc.) Then you use the CL-S or '05 RL pistsons (the J35A3 pistons won't clear the J32A2 valves). Top it off with the J32A2 head.

fsttyms1

That or use the J32A2 block since it has the special coating in the cylinder linings for the uped rpm and heat

JimmyTLS

gotcha so basically the whole J35A3 bottom end besides the piston. Now by doing this, as fsttyms1 said, the cylinder walls or sleeves rather would be thinner so would it still be safe for the redline of the TL-S? And by also utilizing the new crankshaft, will it still rev as quickly? And can I still use my UR crank pulley for the 03 TL-S motor (J32A2)?

mrsteve

iTrader: (1)

Correct the J32A2 has better cooling properties than the J35 block. However from a cost standpoint the J35 block can be had brand new for around $1,200.

I'm not sure what the cost would be to do it piece by piece with the J32 block. And if you purchased a new block you'd still have the stock bottom end for storage.

You have to strip down the motor either way to install the pistons so I can't see how labor would be any different between the two methods.

JimmyTLS

Well I was going to do the labor myself with the help of my friends. Hmm...I think I might just go with just using the internals of the J35A3 with the J32A2 bottom end. Thanks guys.

fsttyms1

you dont want the j32a2 bottom end, you want that from the j35

blk2001tlon19s

If he is referring to the block itself then yes however he would have to use the correct j35(?) rods and crank I believe.

fsttyms1

01-03 J32A2 block (CL-S)
Required to purchase the following:

-= hondaautomotiveparts.com =-
'02-'04 Odyssey (crankshaft)
Product No. 368270 or
Honda part #13310-PGK-A00

'02-'04 Odyssey (connecting rod)
Product No. 368269 or
Honda part #13210-PGK-A00

Main bearings + rod bearings

-= acuraautomotiveparts.org =-
'03 CL-S (pistons) - 10.5:1 CR or
'05 RL (pistons) - 11.0:1 CR

pistons rings (per chosen model)

Note: Odyssey pistons do not have clearance to fit large 36mm J32A2 (intake) valves. Solution - custom job to increase valve pockets.

BTW, The only advantage to get J32A2 block is due to better cylinder sleeves to withstand heat designed for higher redline vehicle,
otherwise depending on the price Odyssey or MDX block are the best bet.

JimmyTLS

Yea, thats what I meant. J32A2 block, J35A3 internals minus the pistons which I will re-use from the J32A2, and also the J32A2 head. Correct?

And like I asked earlier, maybe you guys missed it, but will it still rev as quickly as the normal J32A2 will seeing as how the crankshaft is different and also will my UR crank pulley still work?

VITEK

kuni808

Hmm.. good info. i was thinking that if and when my Trans go im pretty much counting on it. but so far its been driving awsome. im on the gas some times and it shifts awsome. but we will find out tomorrow since im taking it in to acura and they will check it for me. so if an when my warrenty goes bye bye im on it with a J35 block. does the MDX trans bolt into our tls?? just wondering cause if it does then bingo. new trans swap. too bad we cant get a jdm trans for the j32a. that would be nice.

fsttyms1

the pistons you will need are
(the TL-S are teh same)
'03 CL-S (pistons) - 10.5:1 CR or
'05 RL (pistons) - 11.0:1 CR

and it will rev just the same. Not sure on the UR but i would imagine it would

JimmyTLS

And just re-use all of the same sensors right?

Thank man I appreciate it.

fsttyms1

yes, baisicly all you are doing is swaping out a few internal parts

dands99tl

Arias Pistons makes pistons for the J32, the engines are comonly used in high dollar sand rails built in CA. You can reach them at 310-532-9737, ask for Tom, he is the guy that handles import pistons.

Jswapmiata

Traum makes forged pistons for the j32a2 at astandard size 89mm forged but they are almost 1k(989.99) per piston.

Karanx7

iTrader: (2)

Welcome to AZine, Jswapmiata.

619rcr

Talk about a throwback post bump. Also think you're mistaken, the price is per set not per piston:
https://www.powerrevracing.com/category-s/1985.htm