9 replies to this topic

[01smartc]

Hi all, i am building a 1380 street racer type engine. It will be bored to 73.5mm - 1380cc. i would like to no wht pistons everyone reccomends? I think id lke these,

Pistons

but im open to suggestions

Cheers Chris

Edited by 01smartc, 21 April 2007 - 12:50 PM.

[Big_Adam]

I belive Omega and powermax (omega more so) are good pistons to use.

Omega are avalibe from MED. Try to find an offset dished piston. As these normaly position the body of squished gases nicely under the spark plug.

[Guess-Works.com]

Or try the minispares MEGA piston range....

[Puddings]

Got Omega 11cc dish in my 1380 from MED and they do the job guess it all depends on how often you will be driveing it and how much beans you give also consider the price

[Guess-Works.com]

and don't forget the dish size is critical to engine... you need to determine the volume of you head chambers and calculate your required dish size of piston to get the compression ratio you need... if it's a fairly ordinary 1380, then aim for around 10:1

[icklemini]

the powermax 20659 or mega pistons are excellent for road stuff..

the omegas tend to get smokey (thinner ring pack), when road mileages are put on them...

cr dependant on cam choice...

TTFN,
Dave

[Dog]

the powermax 20659 or mega pistons are excellent for road stuff..

the omegas tend to get smokey (thinner ring pack), when road mileages are put on them...

cr dependant on cam choice...

TTFN,
Dave

Second this!!

I am using Powermax pistons, they are awesome!

[Dan]

cr dependant on cam choice...

And fuel preferance.

Can't go wrong with MEGA pistons as far as I'm concerned. They do a 73mm now as well which gives more options for future rebuilds.

[Dog]

Aye 73mm on a std crank give you 1360!

[01smartc]

So da evo pistons arnt worth it? ... I think powermax is the overall concensus! lol ... any other offers? or shall i go powermax? or mega? i cant decide! lol