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I have just bought JDM pistons for my car!!!! [IMG]i/expressions/face-icon-small-smile.gif[/IMG][IMG]i/expressions/face-icon-small-smile.gif[/IMG].

I have a friend who is in the military and also has just opened a speedshop near me. She has a connection with a wholesaler in japan so she can have them shiped to me for $575!

now my question to everyone is...besides a new head gasket, what else do i need to modify/upgrade to keep everything running smoothly?

Thanx,
Boost

 
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is that price for pistons and rods?

 
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what kind of pistons? [IMG]i/expressions/face-icon-small-confused.gif[/IMG]

 
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Excuse me for my ignorance, but what is the difference between OEM pistons and JDM ones? Do you gain HP or something? Can people even see that you have aftermarket pistons?

 
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you'll need new rods and rod bearings definetly. and depending on the size of the piston you'll need to bore the block and possibly some head work. not worth it for all the money and a little horsepower.

 
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what a noob...

 
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Quote

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Originally posted by: civicer
Can people even see that you have aftermarket pistons?
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what a noob...



LOL!

 
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yeha I'm not sure what u get when u get JDm pistons but if u dont then u need t get High performance piston rings. And since ur going to have ur engine apart why dont u get it milled, bored out, and get the crank shaved down. They call it diamond edge cranks, something liek that one of my friends told me.

 
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Like everyone knows everything about cars.

I wish I could log out and log in as my screename. I guess I could stay on my girl friend's sn.

 
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[IMG]i/expressions/laugh2.gif[/IMG]

of course they can! pistons are more noticeable to the naked eye than double decker wings!!

 
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don't waste your money on jdm pistons. if you want performance go to www.crower.com and have them make you a custom stroker kit. they build it to what you want, what compression ration you want and everything. it will cost close to $4000 but it'll be nice.

 
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You know... this thread is EXACTLY why pimpdakota is now only on ClubSI.com... Jut my 2 cents...

 
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explosive, let pimpdakota be on a different website where he thinks he knows all... but he really dont, he was just an inconsiderate punk who flamed everyone for asking questions. i think everyone here has the right to ask a question....whether its NOOB or NOT. this is a good subject and could use some more in depth discussion. although i think it would be in the best interest of BOOST to do more research before jumping into such a mod, its still worthy of being answered fairly. and to BOOST... if the diameter is not identical to the OEM pistons, then this mod will take even more money to complete as you will have to bore out the cylinder sleeves so that they will fit. if the heighth is actually HIGHER, then you better be careful with the specs of how high the pistons go at full rotation of the crank. if they go to high, u will have them slapping your valves...and thats a big NO NO. an expensive one too. usually when taking apart the block, you will need to replace all broken-sealed gaskets, as well as the piston rings and bearings. you MIGHT need to replace the rods, but im not 100% sure on that one. when i used to race Motocross, the rod never got replaced when rebuilding the top-end, so im guessin that it is not necessary, but id call HONDA or a WELL-KNOWLEDGED speedshop/mechanic and get that answer. as for the benefit to this mod...hmm, with our engine, thats a difficult answer. im sure no matter what, you'll be happy with the results over OEM SPEC, but is it worth the money... i guess you just became our guinea pig... g'luck bro! and let us know how it turns out!

 
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but you couldn just answer yes or no, you had to flame right away

 
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why its apart just get your cylinder bores bored out 30 to 40,000
over, re-sleeve the cylinder bores and get it blue printed,
if you know what im talking about...

 
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you can get it sleeved, but not re-sleeved. The D series blocks arent sleeved in the first place. it'll run you about 700 bucks. Definitely worth it if you are gonna go turbo. One of my racing buddies is getting it done, and the shop says the block will be able to withstand 40psi.

 
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yea, dont worry guys, your not going to lose me on the technical jargon. I work at a speed shop.

as far as the the gains. I know it wont be much, remember its a seventh gen. But this is more for my experiance, so when someone comes in to the store wanting something else for their car other than some cheesy bolt on or something that glows neon, i can talk about it with a little more confidence.

also i thought i would be the first one on this website to actually try it out rather than just saying that it wouldnt be worth the money. ok, so im gonna have to only eat Ramen noodles for the next two weeks. at least id have something that the avarage ricer wouldnt even dream of getting.

 
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Who makes em?

 
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if your friend can get those pistons wouldn't it be better to get an RS cam (if it fits) that would get much better gains than pistons, and if the pistons are not from an RS then they are the same as ours, remember the D17a engine is a japanese engine...........

 
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JDM pistons would be needed to give your car a higher output, yes it's true you might need to bore the head out and stroke it all up, but what it does is, it makes your car stronger , and allowing it to take or handle more power........so it's a very good mod i think...

 
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When you get the pistons in, just make sure you get new, good quality rings for it. You won't need to bore or hone the block unless you have 30K+ miles, or if you decide you want to be on the safe side. Finally, all new seals and bearings are a given. Don't worry about the crank, unless again you want to be on the safe side......

 
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HOnestly and truthfully, I dont think you will need any boring or milling work needed. These pistons came out of a 1.7, you have a 1.7. If you take your 1.7 and bored it ever so little, it isnt a 1.7 anymore. The same with the crank. You cant change the stroke of a crank without getting another crank. Chagne the stroke, chane the displacement. Youll need the head gasket definitaly. You might, considering how they came off, the intake manifold gasket, exh manifold gas(yes you replace this every time you remove your manifold), and the thermostat housing gasket. Depending on how many miles you have depends on if you need bearings or not. Just take a look at them when you pull it down.
I personally applaude you on this feat. I would love to do this myself, however I have an LX and it isnt worth the time. I am waiting on finding an RSX just sitting somewhere with the keys still in it. Then Ill sell some parts off it and get the HASport mount kit. All in the name of grand theft auto, ooops I mean going fast.

AceKicker, Its called KNIFE edged cranks.

 
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if it ever comes to the point where you do need to reinforce the cylinder walls aebs (advanced engine breathing systems) can custom make sleeves for you. i'd imagine it would cost a sh*tload of money though but hey, if you're going turbo this would allow the engine to withstand more boost.

 
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ok now what the heck are u smoking? must be pretty good for u to think that. 40psi??? man that shop has the stupidist poeple ever and u are a moron for beliveing them. [IMG]i/expressions/face-icon-small-disgusted.gif[/IMG]

 
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You can stroke an engine without replacing the crank, longer rods and have custom pistons made with the piston pin closer to the ring lands.
The only thing a piston is going to change is A: bigger bore which requires an enlarging of the sleeve, B: reshaped piston head which changes compression and very importantly FLAME TRAVEL for a street engine,
C: just plain forged for strength in case you want to use n2o or turbo or any other power adder. Also, you can increase compression with out slapping valves or detonation by changing timing of the cams.
All of these mods must be taken with extreme care as any can result in an unhappy street engine. It would suck to have to pump premium gas and octane booster every time you fill the tank for a measely 5 hp gain.
There are many ways to squeeze that extra power out, but DO NOT throw in pistons just because they are JDM, our pistons are already JDM, as they are made in Japan.


I could say tons more but you would quickly bore of me, any questions please feel free to ask me , i'm not a pro and WILL NOT give you advice without tons of research, ask the experts always , call crower or other companies .

 
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Obviously not too many engine people in here. First question is who is putting these in? If your doing it you might want to put a 2nd engine on order cause your gonna do something wrong and its going to blow it up. As for what you need extra...it depends what the kit comes with. Are you buying piston heads or an entire piston set up...high perf rods, bearings and rings? Yes after the installion of the pistons you need to get the entire engine balanced or you will rattle the doors off the car. Cost: 500-somethin for the pistons+300 for the rods+100for the rings+750 for pro balance and blueprint= not worth it...then the error factor just add the price of whatever engine you chose to replace the old one when it blows!!!

 
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PISTON HEADS????! ok engine guy , what the f&*k are talking about.