General Forged Pistons and Rods Upgrade Discussion Thread

[Kenneth]

KNOW YOU ALL DECIDE ON MAKING SOME PISTONS AFTER I SPENT ALL THAT MONEY AND TIME ON MINE
tD04S WHICH I AM RUNNING SEEM TO BE GOOD MAKING 480 BHP AND 530 IBS AT 1.4 BAR NOT BAD !!!
SHOULD HAVE THE CAR BACK FROM BODYSHOP NEXT WEEK AND I AM GOING TO TAKE THE BOOST TO 2.0 BAR AND SEE WHAT HAPPENS!!

Someone run over your Caps Lock or Shift key? Seems to be stuck!

[Kieran]

Okay, as expained here:

http://www.clubvr4.com/forum/showthr...080#post254080

This is now the thread for stuff that's not being produced by WRD, so chat away!

[Mark 4]

Well ??

[scott.mohekey]

Bump! Interested in sourcing some forged internals soon.

[Fully]

Yes I know were I'm getting mine from =)
RPW!

[scott.mohekey]

The CP ones? They're NA aren't they? Are you going to get the dish deepened?

[Fully]

CP - 6A13 DOHC 020"
( CP Pistons ) Compression ratio set to 12.5 : 1. Change to custom 8.5:1
Price per Unit (Kit): $1681.82

PAR Forged Conrod Kits
Price per Unit (Kit): $1909.09
These prices are AU$

They will work fine, I use CP pistons in my harley.
Deepen the dish, depends on the compression I want and what cams I am going to use. I still havent worked that one out yet. I might fire up taps over the next few weeks when I am the office biatch and work that out.

[Wodjno]

http://rb-performance.co.uk/catalog/...products_id/72

[Nutter_John]

Dude They sure will work fine in your block for just enough time for you to make boost and them to then **** there load all over your engine bay

12.5:1 is far far too mcuh for a turbo'd engine

[Mark 4]

Eurospec have some.

[Wodjno]

Eurospec have some.

And Mr Batty and Kev at AP If he ever gets round to sharing them with us ?

[Kieran]

and Kev at AP If he ever gets round to sharing them with us ?

Hmm - I think that unlikely. I'd say Eurospec or Mr. B are the best bets.

Mind you, I bet it won't be long before RPW start making them too.

[Turbo_Steve]

12.5 compression on a turbo engine! I suppose you could just remap, keep the boost under 6spi and hopefully it would make lots and lots of low down torque and not go bang.

As john says, I think you'll put a rod through the block the first time you put your foot down.
Deepening the disk enough to seriously affect the compression ratio is also going to be a chaqllenge, as you start to run out of metal fairly quickly....and things get HOT when you're turbocharged: 800degC plus impact force is likely to put a hole in a thin piston crown.

[Wodjno]

Hmm - I think that unlikely.

Whys that K ?

[Kieran]

Whys that K ?

In the past Kev's been very guarded about his setup and where it's sourced from - Which is understandable given the cash and R&D time he's sunk into that car... I think he'll be wanting to try and recoup some of that cash, or at the very least put down a tangible result before he shares details of the setup and forged bits that he's used.

[Wodjno]

In the past Kev's been very guarded about his setup and where it's sourced from - Which is understandable given the cash and R&D time he's sunk into that car... I think he'll be wanting to try and recoup some of that cash, or at the very least put down a tangible result before he shares details of the setup and forged bits that he's used.

But by guarding and taking so long with sharing the fruits of his labour, has only got to be harmfull to his chances of recouping his money and having club members want to purchase his performance parts

The likes of Mr Batty and Eurospec have been open with sharing there parts and performance info
That is the way it should be and not doing it secretively from behind closed doors

[Eurospec]

I did post piccies of our rods and pistons on here ages and ages ago.

http://img.photobucket.com/albums/v3...Picture138.jpg

http://img.photobucket.com/albums/v3...Picture137.jpg

Our pistons are forged, ceramic coated crowns, molly coated skirts, 8.5CR (IIRC), oil relief, contact reduction grooves etc etc etc.

Rods are forged steel I beam.

The pistons are sized for the std bore- so called drop in forged. We wanted to test them first before we said they are good to go because we wanted to be sure they are pucker before we sold them to customers. Back then we intended to have our FTO drag car (with this engine in it) finished long ago...... But obviously it still isnt.

The issue with drop in forged is obviously the clearance- forged pistons expand more than cast, and whilst we sized and clearanced the pistons for a good condition (ie not warn) stock bore, we wanted to be sure there would be no heat related expansion issues before we released them.

When the drag car finally runs (waiting on new manifolds now) we'l be able to prove the pistons.

Cheers,

Ben.

[Eurospec]

Sorry- as the guys mentioned 12.5CR is too high for turbo unless you are gonna run C16 or meth. It will knock like a bugger with the CR up that high.

Cheers,

Ben.

[Fully]

Sorry I just had what spec they were, You need to lower the compression.
I blame the beer!

[scott.mohekey]

Sorry I just had what spec they were, You need to lower the compression.
I blame the beer!

How? Raise the deck with a shim?