Fg f6 mods and tune query..

[JETURBO]

Yeh the pistons can be measured/weighed and checked and with a set of new rings/oil cleaner they "could" be as new and hopefully you'll end up in front  

[JoshF6]

Haha trust me, I know a lot of guys don't agree with used internals, but I've never been stung buying used items ever in my life. So I'm confident the trend continues and will be smooth sailing! 

 

Once I grab that Atomic pump kit off you, I'll be 'pretty close' to the finish line and able to hand car over to get the puzzle put together.. 

[arronm]

What is embossed on the crown

[JoshF6]

10 minutes ago, arronm said:

What is embossed on the crown

It's got numbers 1-6 engraved on the back of each piston. That a normal procedure when installing? 

[arronm]

When I build an engine I number rods and piston when they are balanced  with the crank

 

if all rods and Pistons  are balanced to the lightest I don't bother.   Atomic used cosworth for a while although these don't look like cosworth

Edited 02/10/16 11:03 AM by arronm

[JoshF6]

Ok so, I got onto Brad at Atomic (absolute Legend to spare his time to sort this out by the way).

 

After a few emails backwards and forwards and photos, this is where I'm at and thankfully should be all good once I get the rods and Pistons checked out  as @JETURBO mentioned also.

"Hi mate,

It's all clear now! – here we go

·Arias Pistons

·Atomic Superleggera conrods #306200 – made prior to 2012. (no oil feed hole to the gudgeon pin boss)

As long as the skirts and the gudgeon pin bushes are in good condition there is no reason why you can’t run them.

You need to take them to a reputable machine shop to get the skirts measured to see if they have worn/collapsed.....if all good then bore/hone your block to suit and you are good to go!!

Motors do split bores occasionally, that’s why we ultrasonic check the wall thickness......#1 at the 12 o’clock position is very common, as is 12 o’clock on #5.

Thrust sides (minor and major) are usually good.........

If you have any further questions, please dont hesitate to call/email.

Cheers, Brad"

[JETURBO]

Yep Brad is a stand up bloke and I like doing business with him for these reasons  

[gaz097]

How far oversize are the pistons? I assume 20 thou? If they are slightly worn you could bore slightly under to bring the tolerance back up.

[JoshF6]

5 minutes ago, gaz097 said:

How far oversize are the pistons? I assume 20 thou? If they are slightly worn you could bore slightly under to bring the tolerance back up.

 

I don't know too much about them yet Gaz, but slightly under boring them will probably be the go if need be. 

 

Looked up Arias this arvo and atleast now I know that are not just the stockers bolted on the Conrods. Seem to be a decent Brand which is a good start 

[JoshF6]

Had a bit more lucky yesterday and Arias Pistons have sent me the original order form.