Snowman3645

quick question everyone,

got my H-beam rods in a kit and I want to go with a modest turbo. But I'm trying to use some foresight here. Say I put in some vitara pistons and then something goes wrong with my turbo install/setup/tune and I need to drive it around N/A. Its gonna be ugly with an all stock setup and lower compression. I have a fresh pair of stock pistons from my current motor. is there any reason I can't put my stock pistons on the H-beams, drive it around and install the turbo when I have the time and money down the road?

from what I understand the rods and cylinder walls in my D16Y8 are much more likely to fail than the pistons. I've got a block guard and ordering forged wrist pins. Is there something I'm missing?

thanks for the input :-)

Turbo-LS

iTrader: (4)

Stock pistons will not work on aftermarket rods because they don't have floating wrist pins. Furthermore the stock d pistons are garbage. Just buy good pistons and you can pick your compression ratio.

Hidenplanvew

supertech sells forged pistons for 300ish just do that, do stock or higher compression.

Snowman3645

Well after doing a few hours of research and pricing I'm gonna do something most people would probably disagree with, and here's why:

I need pistons. Ordering forged pistons at any compression ratio is roughly 300-500 bucks. there are however a few people selling unused High comp nippon pistons on craigslist in my area. none stock comp and I don't really want vitaras.

since I already have H beams I will be going high comp, I'm done with the full block rebuild other than putting piston/rod combo in so bottom end will be solid. Once I've got the extra cash I'll put a small turbo setup on with the current internals.

With just high comp pistons and no other mods for the moment, how badly do I need a tune?

frost_white_ej1

it need a tune period!

Freemananana

iTrader: (3)

Higher compression is definitely something to tune for!

ferio-ichi3

Since nippon is an aftermart oe, the pistons still arent set up for a floating pins right?

scottdh20

so much fail here...

oem pistons are press fit, aftermarket are not....

you NEED a tune! no questions asked

no the piston will go long before the cyl. walls...there are tons of people 400-500whp on stock sleeves

high compression turbo setups are nice, but require a good engine management setup(no crome) and a very skilled tuner...the high comp leaves very little room for error...or BOOM

my vitara engine feels like a stock bolt on d16 out of boost

take the block guard out asap, they do far more damage than good...they do not allow thermal expansion and cause cyl walls to crack as they are made of different metal than your block. not to mention every block have small variances that a one size fits all block guard is anything but ideal... css is the only "block guard" I would ever consider using

vitaras are $100 ...keep em under 8-8500 rpms and they do very well, you rev em too high they start cracking

forged slugs are ideal

you have to pay to play....

cheap / fast / reliable <<<<you can only pick 2

ferio-ichi3

All the fail in the world..crunched down into 7 posts...lol everything you said was either brought up or addressed man. Here, have a

Schister66

If the current engine is healthy as-is, just turbo it and have a little fun. Once you have money to properly rebuild it using forged pistons and h-beams, then tear it down and rebuild. A stock D series is capable of 220-240whp in stock form.

Also, using Nippon pistons on aftermarket rods doesn't accomplish much. Even though they aren't OEM pistons, they are essentially the same thing. I can't speak to the floating vs press fit wrist pins on these pistons but that could also be an issue with aftermarket rods

Snowman3645

I can look past the sarcasm and appreciate the advice. ended up not putting the block guard in anyway, it was flimsy and I didn't trust it. but thank you for confirming my suspicions.

These are the rings in the motor
http://www.ebay.com/itm/D16Z6-D16A6-D16A1-Honda-Acura-1-6L-Piston-Rings-D16A-/300610053579?pt=Motors_Car_Truck_Parts_Accessories&hash=item45fdc165cb&vxp=mtr
these are very similar pistons. same same coating and wrist pins, couldn't find the exact ones.
http://www.ebay.com/itm/Nippon-Racing-Full-Floating-JDM-Civic-Type-R-CTR-B16B-Pistons-B16A-SI-81-500mm-/161080637637?_trksid=p2054897.l4276

I bought them off a dude on craigslist for half the price, I'm assuming he got them off ebay since that's the only place I can find them listed. Like I said originally, I'm putting it all together N/A and a turbo is later down the road if it happens with this particular setup at all. This is one of 3 Y8 motors I have so it is just as much for fun and learning as for commuting.

I ground down all the burs in the exhaust+intake ports, going to port match everything with a micrometer before assembling, polished and lapped the valves, and obviously changed the valve seals. The crank is perfectly within spec so no machining there, actually when I had it hot tanked the machinist checked the head and block and said there was no need for any machining. so at this point all that is left is reassembling it. This is the first time I have overhauled a motor and as long as it doesn't blow up on me I'll be happy :-)

I have been trying to find it here but my use of the search bar has turned up very little on my question about tuning. which, side tangent...wtf is up with that? if I type in some key words into google I'll get 10-15 honda-tech articles...but type the same **** into the honda-tech search bar and I get nothing... anyway: do I have to get an OBD1 jumper harness+dizzy+injectors if I want a decent tune? why is it that no one can mess with the stock Y8 ecu? I know that is the SOP for tuning, but why? it's either that or a full stand alone system like hondata, right?

Again, thank you for your replies. if I'm being a **** then call me a ****, but do it after some relevant info please.

Snowman3645

update*

going with greddy e-manage ultimate. I'm in king county Washington state which means I have to pass smog and switching **** around is not something I want to do. I thank you for guiding me towards this new discovery. i wouldn't have looked for the answer otherwise