82mm Stock compression Pistons
11-24-2021, 01:07 AM
Post: #1
82mm Stock compression Pistons
Hi!

I'm in the process of getting my 4AGE back in stock form and I'm trying to reuse my original block that had 81,5mm wiseco pistons and 20k miles after had some kinks on them that eventually scratched the cylinder bores.

I can either get some sleeves and stock pistons or go with a 82mm piston setup. I'm not fond of putting new sleeves on 4AGE's, but i'm finding it very difficult to get stock compression pistons with 82mm of bore.

Does any of you know if there are brands that can get me to where I want to be?

The goal is to build a stock 4AGE for daily use. Good engine blocks are getting each day more difficult to find and I would also like to keep mine, as it is a 7 rib and the 40mm rod journal crankshaft is ok.

Any input will be appreciated!
Find all posts by this user
11-24-2021, 01:42 PM
Post: #2
82mm Stock compression Pistons
If you cannot find any piston?? You could try this less than perfect solution. Rock Auto has .020" oversized pistons and rings for the SOHC engine. For $52 US dollars + shipping. You could use a thinner head gasket to bump the compression back up to stock or even higher. Cosmetic makes several different thicknesses of head gaskets for about $85USD. You may have other HG suppliers in Europe.
Dave W
Find all posts by this user
11-24-2021, 03:31 PM
Post: #3
82mm Stock compression Pistons
Don't know where you are from but there is something here on Marktplaats (Market Place) here in the Netherlands

https://link.marktplaats.nl/m1773995195?...nt=app_ios
Find all posts by this user
11-24-2021, 03:51 PM
Post: #4
82mm Stock compression Pistons
What stock compression ratio are you targeting ?
-9.4:1 bluetop (super lame)
-10:1 European bluetop
-10.3:1 smallport
-10.5:1 Silvertop (that the one I would pick for a daily drive)
-11:1 Blacktop

Even with everything else stock, having more compression is a good thing.

Anyway, most piston manufacturer can do custom jobs.
Get in touch with Traum pistons

or you can try Matrix Garage (but the guy has disappeared for a long time now, not sure they still do business):
http://www.matrixgarage.com/products/mg-...-largeport
Find all posts by this user
11-24-2021, 04:26 PM
Post: #5
82mm Stock compression Pistons
I’m looking to keep stock [email protected]:1.

Already got a quote from wossner pistons at 217€ Each piston. It’s a little steep!
Find all posts by this user


Possibly Related Threads...
Thread Author Replies Views Last Post
  20v Silvertop stock ignition timing and fueling maps Lykowsky 5 5,757 07-18-2019 03:52 PM
Last Post: oldeskewltoy
  working out compression ratios kazi 2 1,805 07-16-2019 08:22 PM
Last Post: oldeskewltoy
  Most stock-resembling exhaust for the AE86? DaLanZhu 4 2,919 03-24-2019 04:10 PM
Last Post: oldeskewltoy
  Small Port 10.3 Pistons Alex170984 1 2,817 10-25-2016 09:18 PM
Last Post: oldeskewltoy
  stock injector deadtime for 4age 20v silvertop/blacktop injector ditn 1 3,935 02-20-2016 11:48 AM
Last Post: Bean

Forum Jump:


User(s) browsing this thread: 1 Guest(s)

Contact Us | AEU86 | Return to Top | Return to Content | Lite (Archive) Mode | RSS Syndication