WTB: Stock MSP PISTONS

[yashart_mp3]

I am in need of the stock msp pistons. If anyone out there has gone forged and is looking to sell their stock ones, let me know! Thank you!

[unwound]

save yourself a possible headache and just go forged yourself.

[pdhaudio83]

yeah, i can get you a good deal on a set of forged! even cheaper than mazdas OEM price for pistons. i cant remember what mazda wants but i think its really high.

[yashart_mp3]

hmm, maybe ill get a set of forged then....already have a set of forged rods( cunningham) I got them from the ProParts.com world challenge protege but now i worried about them... Not sure if they are the same length as the msp rods...anyway, how much for the forged pistons?

[acidbbg]

Actually..The good thing..is that you can use pistons off a MSP/P5/Mp3 & Protege 3rd gens..All of them have the same Engine internals!

There is a guy parting out an lx..in this same section!

But if you have the money..forged is the way to go!

Chas

[yashart_mp3]

Actually..The good thing..is that you can use pistons off a MSP/P5/Mp3 & Protege 3rd gens..All of them have the same Engine internals!

There is a guy parting out an lx..in this same section!

But if you have the money..forged is the way to go!

Chas


I dont think that is right... the msp has a lower compression ratio than the mp3, which is what i have. I think that my car has a 10 to 1 compression ratio, and the msp has a 9.1 to 1 ratio. Someone correct me if i wrong but i think thats what the msp and mp3 have. So, i still need msp pistons if anyone has them!

[acidbbg]

Incorrect..the MP3..only has the advanced timing..NOt high compression piston!

Chas

[PaulMP3]

the mp3 is also 9.1:1 same as the msp,p5,protege

[RyanJayG]

yeah, just spend the $1000 + on forged rods and pistons.... it will pay dividends down the road durring the tuning stages

[yashart_mp3]

I already have forged rods..... what is the advantage of forged pistons as well. I have always wanted to know this... I know that bent, broken or snapped rods are commen in turbo'd cars, but have never heard anything about piston problems.... Can someone please inform me? (Sorry, not that much of a tech guy)

[RyanJayG]

oh yeah... its just as common (even more so if you ask me) to blow a hole in your piston as break a rod.

it just so happens that in protege's the rods are weaker in general.

the only real benefit of Forged pistons is the strength. there are a fw minor drawbacks that the strength more than makes up for IMHO

the only real drawback is when the engine is cold you will get a little engine noise. this is due to the expansion properties of the forged aluminum vs. cast aluminum. they actually have to be machined smaller than an identical cast piston. but once the engine warms up a bit there are no worries.

really, you cant go wrong with forged everything, its just expensive to play that game

[yashart_mp3]

thanks for the info! Money is tight but i will def keep saving and put this item on the shopping list :) Thanks for all your help!

[Black Majik MSP]

I hate to threadjack, but Yashart...you need to give me an update on the Samco GB. Tell me what color you want & send in your payment ASAP...otherwise you will be dropped.

http://www.msprotege.com/forum/showthread.php?t=72313

[yashart_mp3]

money is already sent buddy!

[MP3racer]

oh yeah... its just as common (even more so if you ask me) to blow a hole in your piston as break a rod.

it just so happens that in protege's the rods are weaker in general.

the only real benefit of Forged pistons is the strength. there are a fw minor drawbacks that the strength more than makes up for IMHO

the only real drawback is when the engine is cold you will get a little engine noise. this is due to the expansion properties of the forged aluminum vs. cast aluminum. they actually have to be machined smaller than an identical cast piston. but once the engine warms up a bit there are no worries.

really, you cant go wrong with forged everything, its just expensive to play that game
Just a couple of notes.....
First I do not think a set of OEM pistons will work with the forged rods since most forged rods are set up for floating piston pins and the OEM uses pressed pins.

Second, the note about noise at startup is true for some forged pistons but not all....it depends upon the alloy you are getting your pistons made from. We (Doc B Racing) have worked with Wiseco to develop the special alloy that allows a tighter piston to wall clearance (due to lower piston expansion). These should be ready shortly.....

Thanks,
Tom Bork
Doc B Racing
#10 Grand-Am Cup Mazdaspeed Protege

[RyanJayG]

ok, I grant you the forged piston noise thing is just a typical event, not occuring in 100% of the aplications, my CP pistons wont make any noise either, they require a .003" honing by me, but once it is completed they will be quiet.

as for forged rods with OEM pistons, quite a few people are running this with HiBoost kits, though the stock pistons have been machined for 8.5:1 CR's, though i dont know if the wrist pins have been modified as well or not.

[yashart_mp3]

maybe i should just wait and get forged pistons then...this way i can also get them with a lower compression ratio... 8.5:1. Lowering the compression ratio will not throw a CEL will it. Just wondering. Anyway, hopefully my cunningham rods will work with my stock pistons for the meanwhile.

[acidbbg]

maybe i should just wait and get forged pistons then...this way i can also get them with a lower compression ratio... 8.5:1. Lowering the compression ratio will not throw a CEL will it. Just wondering. Anyway, hopefully my cunningham rods will work with my stock pistons for the meanwhile.
will not throw a CEL..but using highboost haltek..u will def have a cel!

Chas

[jrodhotrod]

will not throw a CEL..but using highboost haltek..u will def have a cel!

ChasI have the Haltech E6X from Highboost and have no CEL ;)

I also have OEM MSP pistons and rods with about 25k on them if anyone is interested. Dirt cheap with a set of new rings.

[acidbbg]

really..that's schweet..so are u just controlling extra injectors? or larger injectors? B/c i thought that the haltek..was a stand alone..and not a piggy?

[jrodhotrod]

really..that's schweet..so are u just controlling extra injectors? or larger injectors? B/c i thought that the haltek..was a stand alone..and not a piggy?
Haltech is a stand-alone that is functioning as a piggy (sort-of, I still don't fully understand what's going on, but I do know you don't have the same problems that you do with other stand alones). When you go through Juan he can give you a set-up that controls the factory injectors or larger injectors. Mine is controlling 440cc injectors in the factory locations.

You have FULL control of fuel and timing so in that sense it's a stand-alone, but a lot of the stock computer still functions.

As I am sure you know the Haltech uses a MAP sensor instead of the MAF sensor. So in theory you could totally remove the MAF sensor from the car, however if you do this you will throw a CEL because it is unplugged. If you leave the MAF sensor in the car and plugged in no CEL becasue the stock ECU still sees it, even though the stock ECU isn't controlling that part of the process anymore.... etc.... but anyways, that's not what this thread is about, I am sure Juan will/has explained it in more detail and with greater accuracy than I ever could. :)

[MP3racer]

ok, I grant you the forged piston noise thing is just a typical event, not occuring in 100% of the aplications, my CP pistons wont make any noise either, they require a .003" honing by me, but once it is completed they will be quiet.

as for forged rods with OEM pistons, quite a few people are running this with HiBoost kits, though the stock pistons have been machined for 8.5:1 CR's, though i dont know if the wrist pins have been modified as well or not.

Most forged rods are manufactured to use floating piston pins as these are commonly used in forged pistons. I would imagine the rods that Yashart Mp3 has from the WC Protege motor are like this. Most likely to run OEM pistons he will need to get them rebushed.....