best piston head?

[gsipete]

i need a new piston and piston head for my G&P zombie killer.
just had a look and have seen they have Aluminium Bearing Piston Head or
Polycarbonate Bearing Piston Head .
which one would be the best to use ????

[Montesa77]

Re: best piston head ???

Element light wieght polycarb.

[whiteman]

Re: best piston head?

Systema policarbon.

[sj_asc]

Re: best piston head?

Prometheus POM Neo and a bead of Loctite 243 on the thread.

[jagillham]

Re: best piston head?

What you currently got? The G&P stock one is pretty damn good.

[sj_asc]

Re: best piston head?

If the seal is poor, it would be a lot cheaper just to replace the o-ring.

[richardy]

Re: best piston head?

if we are talking best then its prometheus pom piston head.

Its not a bad assumption that if you want the "best" of anything go for prometheus.

[gsipete]

Re: best piston head?

it was the stock piston and head. the teeth of the piston have worn down and the head has a crack across it. i have picked up a Systema Polycarbonate Piston from the gun shop up the road to me but then i when to get the head i was asked Aluminium or poly

[Montesa77]

Re: best piston head?

Poly.

[jagillham]

Re: best piston head?

Yup!

Never seen the point in a metal piston head. Just seems to be an extra effort to crack the front of the V2 gearbox, lol.

[gsipete]

Re: best piston head?

cool thanks for your help ive got the poly one just need to fit it lol

[dope_on_a_rope]

Re: best piston head?

What would you guys say about a Systema plastic piston head, without bearing? I'm assuming they use an M3 bolt to attach it, meaning it's easy enough to swap for a longer one for the AOE mod, as well as being lightweight and not having an unnecessary bearing. I generally don't use bearing piston heads, if I have a bearing spring guide. Don't see the need for both. Lightness of the piston would be more useful in a high ROF set up. And you really can't remove the bearing from a bearing piston head, while keeping the piston head centralized on the piston. It would happily ride about all over the place.

Also, as a base for an air break, it's going to be easier to put a bolt all the way through from the back, than half screw it in from the front... if you see what I mean. Not that many people put air breaks on their AEGs. Probably not a good idea on a high ROF set up really. Not that I've tried. Although I have considered fitting an air break to my Type 89.

[North West Outpost]

Re: best piston head?

I think they would be a good idea on V2 DMR's. I havn't tried one yet but they seem pretty simple...erm...famous last words there...lol

I usually use the Element pom piston head even when correcting aoe, I bin the plastic backing and use Action bearing backs...Again bin the bearings. The washers I use seem to locate the center of the top of the piston and they seem ok, using a longer bolt if required. Im going to start epoxying the washers to the top of the piston so they stay central.

[North West Outpost]

Re: best piston head?

Back on topic..lol...

You can use the aluminium heads if you are running a fairly standard set up. I would avoid ally piston and cylinder head together without something soft inbetween.

You have to remember the little G and P's come with a weight on the back of the piston as standard.

I would use pom, they do say the silent systems while not making any real difference in noise do give better airflow...