Factory Pistons

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Old 12-10-2004, 07:43 PM
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First off depends if you want to go N/A or FI - but his 10.1:1 compression pistons will give good drivability and strength for 8-9 psi on 93-octane gas - not to mention more power on a FI 3.5
Old 12-10-2004, 07:43 PM
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Originally Posted by mrsteve
To use Dean's pistons, what else would you need other than MDX crank and rods?

I'm not planning on using his pistons, too much compression, but they are a good price.

just the crank rods and pistons, but if your into doing it cheaply, you might be able to re-use your old pistons if your going to use your 3.2 block. i do have those stock forged rods for sale, never used.
Old 12-10-2004, 07:43 PM
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This is looking interesting
Old 12-10-2004, 07:53 PM
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I already have a S/C and I/C will be here next week. I'm thinking the added torque from the extra displacement is a definite plus. Also, with the slightly lowered compression (10.2:1 vs 10.5:1) I shouldn't have much trouble running 10psi instead of 8.5-9psi.

I wonder how much my dealer would charge me. They've always talked about "stroking" this motor.
Old 12-10-2004, 08:43 PM
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If you are going to pull factory pistons out, replace them with forged ones!!
Old 12-10-2004, 08:53 PM
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I'd replace the pistons with the ones from Dean. The 10.2:1 set.
Old 12-10-2004, 11:38 PM
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^^^ dont u have to get the max boost pulley to run that much boost steve??
Old 12-11-2004, 08:47 AM
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Yes, but with a lowered CR and forged internals it wouldn't be a problem.

Just something for me to think about. The "built tranny" fund has already started.
Old 12-11-2004, 12:09 PM
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Originally Posted by allmotor_2000
With 11.0:1 or 11.5:1, some intake-manifold work and possibly head-work + cams, you are looking at 350-380hp at the crank quite easily.

I'd venture to say with 11.0:1 or higher pistons along with a balanced and blue-printed botton-end, you could achieve 320whp NA.
what pistons are those from??? i thought the type-s was like 11:1 already i could be wrong though i havent read up on it in long time
Old 12-11-2004, 01:00 PM
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Type-S = 10.5:1
Old 12-11-2004, 02:04 PM
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Originally Posted by mrsteve
I already have a S/C and I/C will be here next week. I'm thinking the added torque from the extra displacement is a definite plus. Also, with the slightly lowered compression (10.2:1 vs 10.5:1) I shouldn't have much trouble running 10psi instead of 8.5-9psi.

I wonder how much my dealer would charge me. They've always talked about "stroking" this motor.
Well, I'd say for just the 3 main componets to make it a stroker, Crank-789.00, Pistons-800.00-1000.00 for a set, stock forged rod from acura - 85.00 each.
Old 12-11-2004, 03:48 PM
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Honestly if you are opening up the bottom-end, get aftermarket rods!
Old 12-11-2004, 06:27 PM
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but does any after market company make forged internals for our car? i didnt think anyone did
Old 12-11-2004, 06:32 PM
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Everything will be custom...
Old 12-11-2004, 06:33 PM
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got any recomendations for a company to use. u think crane cams is worth a shot?
Old 12-11-2004, 06:43 PM
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Cams are tougher because it is usually an iterative process to figure out what works best for what...
Old 12-12-2004, 09:51 AM
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yea but dosent crane also make pistons sleves and all that good stuff also?
Old 12-12-2004, 10:03 AM
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Originally Posted by evilone
yea but dosent crane also make pistons sleves and all that good stuff also?
so what? If you're going custom, just go custom... no reason to go with a company because they make a variety of parts for some other car. I'm sure allmotor has the right idea with who he's using and for what he's using them for.
Old 12-12-2004, 12:16 PM
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i wasnt trying to say he has to use them i was just asking if they made other custom engine parts other than cams
Old 12-12-2004, 12:30 PM
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yes
Old 12-12-2004, 12:56 PM
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are there any J series engines that are DOHC? if you're going to build up the engine, why not make it DOHC while you're at it? (NA)
Old 12-12-2004, 03:00 PM
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Well, if the 6spd tranny mates to the NSX block... then that is an idea!
Old 12-12-2004, 03:06 PM
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Does the 3.5L bottom end bolt up to the NSX heads?
Old 12-12-2004, 03:20 PM
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Originally Posted by mrsteve
Does the 3.5L bottom end bolt up to the NSX heads?
no
Old 12-12-2004, 03:26 PM
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That would be too easy wouldn't it?
Old 12-12-2004, 04:55 PM
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Originally Posted by mrsteve
That would be too easy wouldn't it?

and expensive, 04 head for the nsx is around 3700.00, that's for one head only
Old 12-12-2004, 05:07 PM
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Not according to www.acuraautomotiveparts.org

Each head is < $2000
Old 12-12-2004, 07:18 PM
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Originally Posted by mrsteve
Not according to www.acuraautomotiveparts.org

Each head is < $2000
that's without the valves and springs.

http://www.acuraautomotiveparts.org/...prddisplay.jsp

look under... ENGINE ASSY.- TRANSMISSION ASSY.
Old 12-12-2004, 08:52 PM
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Ahhhh I see now
Old 01-24-2005, 07:30 AM
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Raising the dead but am curious what information was determined about new pistons??
Old 01-24-2005, 10:16 AM
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Oh... nothing that dramatic. It's a 6-8 week lead-time for custom JE's, Arias or pretty much any brand.
Old 01-24-2005, 10:38 AM
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No big deal, just curious.

My father-in-law now wants in on the NSX build which is fine with me; lowers my total costs. We may just leave the engine alone and run the twin turbo system and see at what point it goes south. Might be interesting to find out how much the stock J32A2 can take.
Old 01-24-2005, 02:47 PM
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What about Type-S motor with CL-P pistons?
Old 01-24-2005, 03:34 PM
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Originally Posted by mrsteve
What about Type-S motor with CL-P pistons?
Would be cheaper way to lower compression, but I doubt they are as strong as a set of JE forged pistons.
Old 01-25-2005, 09:10 PM
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Originally Posted by scalbert
No big deal, just curious.

My father-in-law now wants in on the NSX build which is fine with me; lowers my total costs. We may just leave the engine alone and run the twin turbo system and see at what point it goes south. Might be interesting to find out how much the stock J32A2 can take.
I have seen some comment thru out the forum leading me to think you are in the midst of some kind of project. I was going to search to see what it was but have no idea so don't know what to search for. So if you or someone else could fill me in. I am also interested in getting forged internals prolly 9.5:1 compression for CL-S motor.

Can we use off the shelve pistons, rods, etc. I remember hearing that some parts are interchangeable/compatiable with K series Engines. I also went to King Motorsports and they said that NSX internals are also compatiable. This way save some money since not custom.
Old 01-25-2005, 09:14 PM
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Eh? I don't think the internals are compatible!?!
Old 01-25-2005, 09:16 PM
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I am not sure but that is what King Motorsports told me, maybe they would slightly modify them in-house or something but that just what I was told.
Old 01-26-2005, 06:14 AM
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It would be trial and error to see if any parts are interchangeable.
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