Forged pistons
Member
Joined: Apr 2000
Posts: 4,008
Likes: 0
Why? If your 1.820vT is turbocharged from Audi, doesn't it already have forged pistons?
Our 1.8 turbo TT engine does.
If you are starting with a non-turbo and adding the turbo, yeah, you'll want forged pistons, and they will need to be a different compression ratio from non-turbo.
Just replacing cast pistons, which are probably hypereutectic anyway, with forged is a waste of money unless you plan to make 50-100% more power than stock. You know that forged pistons need to be fit looser, so they are noiser until the engine is warmed up. They are only better than cast when the power (and heat) is really turned up.
If you were adding NOS of up to 75 hp or so to a NON-turbo 1.8, stock pistons should be fine. If you are doing a 125 or more NOS shot, you need more than pistons! Same if you are thinking of NOSing a turbo.
JE is excellent, but they tend to be US V8 oriented more than German 1.8's. Mahle comes to mind as a good provider.
My $.02
If you are starting with a non-turbo and adding the turbo, yeah, you'll want forged pistons, and they will need to be a different compression ratio from non-turbo.
Just replacing cast pistons, which are probably hypereutectic anyway, with forged is a waste of money unless you plan to make 50-100% more power than stock. You know that forged pistons need to be fit looser, so they are noiser until the engine is warmed up. They are only better than cast when the power (and heat) is really turned up.
If you were adding NOS of up to 75 hp or so to a NON-turbo 1.8, stock pistons should be fine. If you are doing a 125 or more NOS shot, you need more than pistons! Same if you are thinking of NOSing a turbo.
JE is excellent, but they tend to be US V8 oriented more than German 1.8's. Mahle comes to mind as a good provider.
My $.02
Trending Topics
AudiWorld Stories
Bringing Audi to Life for Audi Fans
The Highs & Lows of Every Audi C-Class Generation
Joe Kucinski
Top 10 Most Expensive Audis Ever Sold on Bring-A-Trailer
Brett Foote
10 Audi Features & Options We Miss the Most!
Joe Kucinski
Audi Recreates Crazy-Looking Speed Record Breaker From 1935
Verdad Gallardo
Coachbuilder Recreates the 1995 Audi TTS Concept
Verdad Gallardo
Every Audi V10 Car Ranked!
Joe Kucinski
9 Audi Designs That Aged Like Fine Wine
Verdad Gallardo
2026 Audi Q5 Buyer's Guide (Every Model Explained)
Brett Foote
Ranking Every Current Audi 'S' Model From Worst to First!
Joe Kucinski
AudiWorld Super User
Joined: Nov 2000
Posts: 6,270
Likes: 0
I got mine from JRC motorsports....
$540 for a set, that also includes rings and pins.
You'll have to tell them what you want to run for compression. After measuring the stock setup, it was about 8.8:1 (IIRC - I posted about it previously)
Mine are spec'd for a 2.0 with a 9:1 compression.<ul><li><a href="http://www.jrcmotorsports.com/index2.html">http://www.jrcmotorsports.com/index2.html</a></li></ul>
You'll have to tell them what you want to run for compression. After measuring the stock setup, it was about 8.8:1 (IIRC - I posted about it previously)
Mine are spec'd for a 2.0 with a 9:1 compression.<ul><li><a href="http://www.jrcmotorsports.com/index2.html">http://www.jrcmotorsports.com/index2.html</a></li></ul>