As per the title – What options is anyone aware of for NC30 oversize pistons?

I have acquired a sorted ‘spare’ engine for my forthcoming “NC30 mid life refurbishment” project so I now have the luxury of just swapping the old one out and working on the remaining one in slow time. The old engine is a decent runner, but I just feel it is due a pull through and full overhaul to get it ready for another 20ish years, rather than waiting for something to break and then playing catch up.........and I fancy doing it as another project.........when I finish the road bike......and maybe a bit of work on the track toy...

Anyway, apart from a lot of cleaning and replacing the bearings / shells and seals etc, the only ‘major’ work I would be looking at is a rebore hence also a fresh set of slightly oversized pistons. I am just looking for a good solid engine and am not chasing any mythical crank bending BHP figures. In an ideal world I would just go to Mr Honda and get a set of +1mm or +2mm OEM items with rings to suit and Bob would be my mother’s brother....if only it were that simple, eh!

Having trawled this forum (and the rest of the web) for a day or two it seems this topic has been broached a few times on here – I am just not sure where it actually ended up.

Mark (CMSMJ1) – started to organise a group buy of +1mm/+2mm from Omega/Accralite a couple of years ago (viewtopic.php?f=22&t=15106) but unfortunately that never seemed to come to fruition – Notably due to the company and not the collective 400GB will to get some oversize pistons made.

The only other options I am aware of to refresh the bores/pistons are:

Either the JE 433 big bore kit for (Approximately a +2.5mm bore, I think)

Or the beautiful, if expensive and rarely available, Cosworth Piston option utilizing +1 oversize FZR rings through G-force performance – Fair warning, this link contains engineering pornography - (viewtopic.php?f=22&t=7610)

So my questions to one and all......

Did Omega/Accralite ever actually produce a +1mm or a +2mm piston for the NC30 and did they ever clarify what rings they would use?

Anyone got real life experience/feedback running the JE 433 kit?

Has anyone found any other sources of oversize pistons/rings for the NC30?

Cheers

NGneer

I have PMd you dude..

You have nail on the head with it to be fair..

CMSMJ1 wrote:I have PMd you dude..

You have nail on the head with it to be fair..

And PM back to you sir



Anyone living day to day with a JE433 kit installed?

Rick Oliver has one I think? Might even be a 444?

I have had custom pistons from Mahle in the past. The quality was exceptional. I don't know if they still do custom orders anymore but it could be worth asking. Also check out the CP piston reference on the G-Force website.
cheers

Just spotted these on ebay

http://www.ebay.co.uk/itm/honda-nc30-rv ... 2c69d231d2

marcus57 wrote:Just spotted these on ebay

http://www.ebay.co.uk/itm/honda-nc30-rv ... 2c69d231d2

Interesting...who made these in the quiet..?

Chris at Dynopro had these made as far as I am aware, he has them in stock.

Look at the price they sold for!!!!!!!!!

Smev wrote:Look at the price they sold for!!!!!!!!!

I think that's a bargain, there's not many quality alternatives out there.