Toyspeed.org.nz Message Board

by **Paulio** » Wed Aug 26, 2009 2:51 pm

Compared to standard 4ag rings, are gze rings forged or "semi-forged"?

(Toyota genuines)

P

by **Bazda** » Wed Aug 26, 2009 3:32 pm

Forged???

Is there such a thing?

There are different types as in material.

by **gasman** » Wed Aug 26, 2009 3:52 pm

the rings are usually made from a steel wire so i wouldnt think there would be much variation between non 4agze and 4agze ones apart from maybe the coating or the material if that.

only very very old (~30years ago) piston rings were cast from my knowldege

by **ROBODISCO_20v** » Wed Aug 26, 2009 3:53 pm

I think he means chrome top ring. I know ACL ones are.

by **Paulio** » Wed Aug 26, 2009 4:27 pm

I.e are they strengthened in any way compared to n/a ones?

Sounds like they arent?

by **Bazda** » Wed Aug 26, 2009 4:50 pm

You need to ask toyota what material they are made out of, that way you can determine which are better.

If they use different part numbers between them I would stick to what ever the piston is meant to have.

by **matt dunn** » Wed Aug 26, 2009 8:14 pm

Bazda wrote:You need to ask toyota what material they are made out of, that way you can determine which are better.

If they use different part numbers between them I would stick to what ever the piston is meant to have.

I believe the GZE ones may have thicker rings?

Anyway, as said use the correct one for the pistons you have,
there may even be different ones for the different models,
MR2, Ae92 AFM, and Map?

Anyway I run genuine toyota AE101 GZE rings for 500hp so they are obviously quite good.

by **Bazda** » Wed Aug 26, 2009 9:14 pm

The early 4agze uses different thickness rings than the later model.
Early model has a 1.5mm top ring, late models 1.2mm top ring.

I also think the oil rings are a different thickness as well.

I think all the late model 4a pistons use the 1.2mm top ring.

by **TRD_ZERO** » Wed Aug 26, 2009 9:30 pm

They are semi forged thats why they are flexible. :roll:

by **Paulio** » Wed Aug 26, 2009 9:55 pm

Excelent guys, thats what I wanted to know.

They are flat top forged so obviously 8.9:1 from ae101 gtz, happened to notice a set of rings for these on trademe, what a bonus!

Cheers again
Paul

by **IH8TEC** » Wed Aug 26, 2009 11:23 pm

wtf, flat top forged rings

Website · by **Bling** » Wed Aug 26, 2009 11:29 pm

Pistons maybe..

by **matt dunn** » Wed Aug 26, 2009 11:29 pm

IH8TEC wrote:wtf, flat top forged rings

I presume he means pistons.

The AE101 are near flat to look at on the top.

by **Paulio** » Thu Aug 27, 2009 8:57 am

Yes pistons. The difference between the older bigport gze 8.0:1 and the smallport ones I have is pretty clear, hence flat top vs dished.

by **CAMB01** » Thu Aug 27, 2009 9:11 am

Most top rings these days are steel, and 2nd rings are usually cast iron.

by **Bazda** » Fri Aug 28, 2009 11:55 am

the 8.9:1 pistons are not flat top.

flat means _______________________

They have a a small -5cc bowl in them.

by **Paulio** » Fri Aug 28, 2009 12:23 pm

Yes I gathered that, I shall reference them as 8.9:1 from now.

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