Hi there

[ludiagsm]

Are your motor mounts original height!

yes i didn't change motor height it is original level

Are you routing the oil from the canister to the cooler,

no i take oil before the canister  m42 has original servise hole between oil pump and canister i take the warm oil for oil cooler from that point and after oil cooler i return it to the canister. There is one catch , inside the canister hase two oil valves you must block them in closed condition

 

do you have interference with the driving belts?
thanks

no i didn't make changes with the driving belts

 i will poste a pictures soon

[ludiagsm]

i take idea from issie bmw
that man are crazy his e30 are 10 sec car

[ludiagsm]

here is some new fotos i will use two exhaust sistems with 76mm pipe , with  pipe selector http://www.youtube.com/watch?v=iRhe6aOVi2w   new turbo GTK-450 from  http://www.turbokits.com/gt-k_turbochargers.html  external  30mm gate and more changes i hope this time to have much more  power then before :rolleyes:

[ludiagsm]

Awesome so it clears, i have been told it would not. Are your motor mounts original height! Are you routing the oil from the canister to the cooler, do you have interference with the driving belts?
thanks

i did't wash my engine :eek:,  but here is two pictures with points from where i catch hot oil and where  i return cooled  from oil cooler i did't use termostat



http://img505.imageshack.us/my.php?image=oil17062007325zb2.jpg

 i think  that greek solution (vatos p)  for oil cooling catch and return are beter then mine  http://www.m42club.com/forums/showthread.php?t=1633

[ludiagsm]

and two new pictures

[ludiagsm]

yesterday i heard the sound
 http://youtube.com/watch?v=y5Db3bebQrg


http://youtube.com/watch?v=qeguv613Cnw

today i make a few kilometers the turbo is the best who i ever had it is perfect ,spools at 3000rpm ,at 4000rpm i have full boost:)

[nuvolarossa]

Hi ludiagsm, can you speak me more about of your exhaust manifold building? Diameter, type of metal, welded with MIG or TIG?
thanks

[ludiagsm]

Hi ludiagsm, can you speak me more about of your exhaust manifold building? Diameter, type of metal,  with MIG or TIG?
thanks

 diameter for runners are 40mm , type is steal, but not  crhome nickel  it is simple black steel with thickness 3,5mm weldet with mig

if it exhaust have an effect i will made one with chrome nickel material and TIG welded

[Frankie]

I have a few questions. It seems that your engine revs to ~7800 (not 8500rpm) which is nice too, but have you made any internal changes to the engine, like changed the lifters, pistons, valves, rods etc?

[ludiagsm]

I have a few questions. It seems that your engine revs to ~7800 (not 8500rpm) which is nice too, but have you made any internal changes to the engine, like changed the lifters, pistons, valves, rods etc?

yoy must know that the original rpm meter is to slow than tuned boosted engine especially on first and secong gear i have copple of log files from my smt6 and inovate wb meter  in that logs i have seen rpm values up than 9000 rpm:eek:  

yes the engine have forged pistons and rods and performance bearings(you may see on first page i posted links with them) ,valwes and springs  and cams are original  for now . I know that if I had stock cr and stock combustion chamber  alredy I must to have problems with valves but i have not ,my engine for now is in good condition

[Frankie]

Thanks for the info. What pistons and rods they are (more detailed specs). So pistons, rods and bearings are the only mods you have done to engine and still it revs to near 9000rpm?? that is quite amazing.

[ludiagsm]

Thanks for the info. What pistons and rods they are (more detailed specs). So pistons, rods and bearings are the only mods you have done to engine and still it revs to near 9000rpm?? that is quite amazing.

 pistons are made by Wossner 86mm (for opel C20LET) engine block is rebored to 86mm with clearance 0,1mm between pistons and cilinders.
piston pins on m42 are 22m diameter but piston pins for c20let must be 21mm diameter so I found one model made for   HONDA forget rods  H profile who was for 21mm piston pins and they down diameter  on crank bearings are the same like M42 rods 48mm.
 Rods are made in Eagle H-profile http://img227.imageshack.us/my.php?image=ariqnabutalcabielkiui8.jpg

 one bug ,that honda rods are 138mm long , the original M42 rods are 140mm long so I grind the engine block with 2mm then i put the krank rods and pistons  and i so that i have 1mm clearence between up site of pistons to the top level of engine block. so I made the CR calculation and now i have cr 7,9:1 and I deside that is good for boosted engine and i had a litlle positive fact who is  the cliarence between valves and pistons and there is no chance to had smashing blow even in rpm levels more than 10 000rpm

i taste that by chance when i had missed shift and the rpm needle show my left foot:) when after that happend i watched log file and i so something close to 9500 rpm :eek: but engine is in good condition

sorry for my bad einglish i hope that you uderstand me

[nuvolarossa]

pistons are made by Wossner 86mm (for opel C20LET) engine block is rebored to 86mm with clearance 0,1mm between pistons and cilinders.
piston pins on m42 are 22m diameter but piston pins forc20let must be 21mm diameter so I found one model made for HONDA forget rods H profile who whas for 21mm piston pins and they down diameter on crank bearings are the same like M42 rods.
Rods are made in Eagle H-profile http://img227.imageshack.us/my.php?image=ariqnabutalcabielkiui8.jpg
 
one bug ,that honda rods are 138mm long , the original M42 rods are 140mm long so I grind the engine block with 2mm then i put the krank rods and pistons and i so that i have 1mm clearence between up site of pistons to the top level of engine block. so I made the CR calculation and now i have cr 7,9:1 and I deside that is good for boosted engine and i had a litlle positive fact who is the cliarence between valves and pistons and there is no chance to had smashing blow even in rpm levels more than 10 000rpm
 
i taste that by chance when i had missed shift and the rpm needle show my left foot:) when after that happend i watched log file and i so something close to 9500 rpm :eek: but engine is in good condition
 
sorry for my bad einglish i hope that you uderstand me

:eek:Thank you for the precious informations!:rolleyes:
so the pistons are made by Wossner 86mm (for opel C20LET) and fitted to our BMWs without deck or other modifications?
bye

[kowalski]

:eek:Thank you for the precious informations!:rolleyes:
so the pistons are made by Wossner 86mm (for opel C20LET) and fitted to our BMWs without deck or other modifications?
bye

from what i understand the pistons should bolt right in with nothing changed but boring. He used forged H-beam rods from a honda, that were 38mm so he decked the block 2mm to compensate.

[nuvolarossa]

I've made some researches:
-wiseco pistons for C20LET make a CR of 8,5:1, forged.

-oem pistons for C20LET make a CR of 8.5->8,8:1. not forged, but tested to be good until 300hp.
same bore and same pin diameter between them.
 
 
EDIT: there is a version of C20XE with turbo that has Mahle forged pistons from factory, with same specs as C20LET's pistons... (same 86mm bore, same 21mm pin.....)
 
-> should be easy to found them used for a low budget but bad turbo setup...