just throwing this out here

[stereomotional]

im in the middle of building my m42. lets get to the point...

my goal is 300 - 350 RHWP.

what im getting
-CP forged pistons (9:1)oversized to 86mm(stock is 85mm) from vacmotorsports
-MLS headgasket (.060 - .080) depends on if and how much my head has to be milled down
-ARP headstuds
-performance / racecoated rod bearings
-machine shop work, already did my home work and got some prices, found a local shop that does awsome work, definetly got good references. boring my block to match the pistons(86mm = 2.0L?) balancing and polishing my crank, shotpeen my stock rods, mill my head(if needed) and 5 angle valve job ALL for $430
-Metric mechanic turbo cams/beehive springs/titanium keepers. ive already port/polished my head


im just doing the build first, getting the megasquirt straight and get it running good. hopefully will be boosted by fall. then we'll worry about the turbo/fueling/exhaust... And of course im doing all the other things like waterpump/Tchain/all other gaskets and seals/and sensors. and i have already purchased a COP kit from rob on here.

thoughts....? comments.....?

[stereomotional]

found this gem a while ago...definetly a must
http://www.turbogoods.com/index.asp?PageAction=VIEWPROD&ProdID=9

[Scany]

Sweet! I wanna be updated on that project. Taking my iS to BMWCCA autox school tomorrow and I'm sure I'll be dying for more power after this season.

[stereomotional]

hell yeah man, sounds awsome. this isnt going to be a buy everything and do it all in a weekend build...i got bills n shit :D but its happening :)

[Scany]

Let me know if I can help. Id be glad to, esp with such a project. Im in downtown DC.

[rob_e30]

How much boost do you plan to run? Are you running the stock crank? Do you plan to up the rev limit?

[nuvolarossa]

found this gem a while ago...definetly a must
http://www.turbogoods.com/index.asp?PageAction=VIEWPROD&ProdID=9
I have that gem! I'll post some pics later today:D

[stereomotional]

awsome man! i also saw someone post an obx mani with dp they got from ebay claming that it was nice...but i just cant trust that.



and i plan on running the stock crank, and upping the limiter a bit, i figure the head can handle it. and we'll see about the boost, depending on what snail i plan on using.

[stereomotional]

the car, prolly saw my profile thread.

http://i95.photobucket.com/albums/l148/stereomotional/IMGP0371.jpg

http://i95.photobucket.com/albums/l148/stereomotional/IMGP0292.jpg

http://i95.photobucket.com/albums/l148/stereomotional/IMGP0279.jpg

[stereomotional]

update

i ordered some forged eagle rods today, changed my mind about shot peening my stock rods :D

[318kid]

Hey what suspension are you running?
Thanks

[stereomotional]

i bought it with an eibach spring kit...dunno which one. but im planning on running a j stock suspension from TMS

[stereomotional]

recieved them today!!
http://i95.photobucket.com/albums/l148/stereomotional/Picture029.jpg
http://i95.photobucket.com/albums/l148/stereomotional/Picture032.jpg

and the COP kit i got from here
http://i95.photobucket.com/albums/l148/stereomotional/Picture036.jpg

[nuvolarossa]

you picked rods from here: http://cgi.ebay.com/ebaymotors/EAGLE-ESP-HBeam-Connecting-Rods-BMW-M40-M42-M44-motor_W0QQcmdZViewItemQQcategoryZ33623QQihZ024QQit emZ370013040223QQrdZ1QQsspagenameZWD1V

if so they're shorter than stock... are 5.313" (135mm) lenght yours? Stock ones are 140mm.

[stereomotional]

naa, i got mine from turbogoods.com from neukin

[nuvolarossa]

ah great, I remember when he told me about them!
But they are 5.313" CRS5313B43D

so your pistons are made for these shorter rods?

[Letsplayskatch]

and the COP kit i got from here
where?! I thought I only found the chap who is selling the adapter plate for the COP kit...not the whole conversion. :S

[stereomotional]

ah great, I remember when he told me about them!
But they are 5.313" CRS5313B43D

so your pistons are made for these shorter rods?

hmmm your right, i looked it up myself as well, 140mm.....why would they make forged rods that are shorter? maybe assuming your going to deck the head? or use high comp pistions to compensate for the shorter rods?

[nuvolarossa]

hmmm your right, i looked it up myself as well, 140mm.....why would they make forged rods that are shorter? maybe assuming your going to deck the head? or use high comp pistions to compensate for the shorter rods?
because turbogoods sells some special pistons for those rods that have higher compression height, wich is good for turbo... so you'll end exactly with toyosupr setup (aka Alex Neumann) wich was making some serious power:D
search for it on bimmerforums, he has his thread!

EDIT: http://forums.bimmerforums.com/forum/showthread.php?t=396122&page=6

[rob_e30]

where?! I thought I only found the chap who is selling the adapter plate for the COP kit...not the whole conversion. :S

I'm selling complete converstion kits, if that's what you are looking for.

[stereomotional]

because turbogoods sells some special pistons for those rods that have higher compression height, wich is good for turbo... so you'll end exactly with toyosupr setup (aka Alex Neumann) wich was making some serious power:D
search for it on bimmerforums, he has his thread!

EDIT: http://forums.bimmerforums.com/forum/showthread.php?t=396122&page=6

yeah the pistons on their site are...a little vague. ill look into it

[stereomotional]

well they emailed me back about the pistons, but im just wondering how much bigger they have to be to compensate for the shorter rods, and with a .060 MLS headgasket

[stereomotional]

i figured since today is my day off, and its so nice outside, that i would take some time to clean the engin bay, since it have the room with the motor out.

pulled out the condensor, AC lines, and whatever the AC collector or whatever it is on the passenger side along the fender. alot more room for a FMIC now :D

from

http://i95.photobucket.com/albums/l148/stereomotional/Picture033.jpg
http://i95.photobucket.com/albums/l148/stereomotional/Picture036-1.jpg

to

http://i95.photobucket.com/albums/l148/stereomotional/Picture042.jpg
http://i95.photobucket.com/albums/l148/stereomotional/Picture043-1.jpg

just an hours worth of work, and three cans of gunk, engine brite. plenty more cleaning ahead, just a little bit done today

[stereomotional]

ok well the guy at turbogoods.com is no help to me. does anyone know what to do about getting pistons for rods that are 5mm shorter than stock??

[nuvolarossa]

What was the name of the guy that replied your email at turbogoods?

[stereomotional]

dunno, just sales@turbogoods.com

[nuvolarossa]

stereomotional, you have a PM, read it, it's important!;)

or if you want to try:
http://forums.bimmerforums.com/forum/showthread.php?t=903532
BUT DISCLAIMER: I don't want any responsability...I'm not a engineer, never tried 4g63t pistons on engine, only christmas holidays fantacalculations and they maybe wrong... but if it works it would sign a new era.

[stereomotional]

ive bought an m50...soooooooooooo plans have changed. rods and cop kit for sale!!!!

[nuvolarossa]

another turbo project missed ;) hope you will like the torque and sound of that M50 :)

[HMS_Tim]

ive bought an m50...soooooooooooo plans have changed. rods and cop kit for sale!!!!

COP.. How much $$

[peerless]

To bad about the rods. I have all mine reconditioned, polished, shot peened and balanced.

http://img.photobucket.com/albums/v176/peerless/M42pistons.jpg

[rob_e30]

What did you do with the cams and valve train components? Please PM me if you're selling them.

[Sam Cogley]

ok well the guy at turbogoods.com is no help to me. does anyone know what to do about getting pistons for rods that are 5mm shorter than stock??

Custom pistons? I forget which one of the big-name piston companies did it, but I know a guy who had some very custom pistons made for a vintage GMC I6. Ran about $600 for the set.