Acl duralite vs forgies

[ted]

Hi all,

Odd question im just after peoples opinions. I have a set of 20" over brand new Duralite pistons. got them for $20. I just bought some forged rods off another member.
My question is.....The weak point in the 93T is the rods i have rectified this with forged rods i know the sensible thing is go forged pistons BUT......How many people have
actually destoyed a 93T piston? ACL claim there upto 30% stronger that factory pistons i was thinking of using these instead of forgies. so can anyone help me out?

 

[blackvr]

With some sensible tuning ie no detonation, I reckon go for it ! Although i opt for forgies in all of my builds, the duralite is a pretty good piston, especially for $20. Just make sure the bore machining instructions are followed.

 

[DOUGMO]

yep, they will be fine if the tune is good and not on the ragged edge with timing.

they wont fail from too much power in a hurry but they will fail quickly with a poor tune

 

[ted]

Sweet as!! Im gald to hear positive things so far! next thing is im going to go a ecmlink v3 lite setup who would people suggest for tunning?
will take the car anywhere!! Preferably melbourne though.

 

[ted]

F#%K I cant use them anyway!! There conrod press fit gudgeon pins where the forged rods take full floating :S now.....What everyones pic on forgies? wiseco,CP ect?

 

[milkandoj]

How much power/boost/airflow are u planning to put through this motor? Id say that has a role to play in how well they are going to last, how likely you are to have high cylinder temps and presures and detonation. If its a massaged stock ish setup yeah why not, or are you going to be going hard on the motor?

Shit just re read that you cant use them anyway haha

 

[4piknup]

You can't use them because you don't have a circlip groove to retain the gudgeon pin.
Machine in the groove and go from there. Your engine builder can do this very easily.

 

[4piknup]

Is there some crap about 21/22 mm gudgeon pins with these 93 engines? I can't remember. Or is that just the 63- 6/7 bolt engines
Either way, check everything will work before you machine anything.

The only reason full floating conrods exists is to make it easy to disassemble/ reassemble engines.

 

[ted]

Milkandoj: It will be pushed hard 25 psi ish through a TD06SL2-20G, 260in/270ex cams, 8.5:1, decent revs ect
Jack:Engine builder can do it but for a few hundred more dollars i can buying forgies. And as far as im aware the 21/22mm is a 4G63 thing

 

[BMGTZ]

Milkandoj: It will be pushed hard 25 psi ish through a TD06SL2-20G, 260in/270ex cams, 8.5:1, decent revs ect
Jack:Engine builder can do it but for a few hundred more dollars i can buying forgies. And as far as im aware the 21/22mm is a 4G63 thing

some rod manufacturers make 4g93 rods 19mm on small end ....BUT some online sellers do piston and rod packages that have 21mm

 

[ted]

Cheers man thanks for the info i wasnt 100% sure

 

[oggy]

You can't use them because you don't have a circlip groove to retain the gudgeon pin.
Machine in the groove and go from there. Your engine builder can do this very easily.

You can also go the other way if you like, and get your engine builder to modify the rods to allow floating pins. I had this done on my last 4g63 build as my forgies were like yours and designed to be floating, but I was using standard rods