1.8T pistons in a 16v motor

[MK1Scirocco16v at comcast.net (Dave Ewing)]

> First off, I wouldn't assume the 1.8T pistons are forged. Forged pistons
are
> rare in production cars and some of the 1.8T's even have cast cranks. Just
> because the engine is turbo doesn't mean the piston is forged. It may be
> stronger since it's designed for boost, but not necessarily forged.
> Second, that will be one effed up combustion chamber. The cylinder head is
> the top of the chamber and the piston is the bottom and they are designed
to
> provide a total volume that burns quickly with high resistance to
> detonation. When you mix and match you will most likely end up with a poor
> combustion chamber more likely to detonate.
> Third, have you thought about valve clearance? The 16V has a pretty large
> valve clearance notch that is missing in the 1.8T piston.

I believe lower compression (along with the possibility that the pistons
were forged) was the goal so the 1.8T pistons are more than likely dished
enough to clearance the valves.  I am not sure but it seems that way.

> I've been keeping an eye on your posts ever since you started talking
about
> Megasquirt 6 months ago.
> I've got one piece of advice. Learn to walk before you try to run!
> just my .02
> Dan

The reason why we are here is to help others (and get some help once in a
while) through the experiences of our own not to tell someone what they lack
personally.  I think this message would of been perfect if it weren't for
the slam on Derrick's level of VW knowledge.  We all started somewhere and I
find myself learning faster when I get in over my head a little!

Dave
>
> ----- Original Message -----
> From: "Derrick Floyd" <derrickmd18@verizon.net>
> To: "scirocco mailing list" <scirocco-l@scirocco.org>
> Sent: Sunday, September 21, 2003 9:46 PM
> Subject: 1.8T pistons in a 16v motor
>
>
> bore stroke disp rod wrist pin
> 16v 81.0 86.4 1781 48 144 20 33.4 -5 220 10:1
> 20v 81.0 86.4 1781 48 144 22 32.8 0.0 220 9.15:1
> think they will fit.
>
>
>
> I wanted to build a motor with stock vw parts that I can boost to 350hp.
> Because the way I look at it a 16v bottom end has forged crank, some BIG
boy
> rods and cast pistons. so If I can use 1.8T forged pistons I'll have a
> somewhat STRONG bottomend. so if it works the bottomend is done and I can
> send the head out to get P&P and some valve springs and some turbo cams
and
> hit Killa up for a t3/t4 with the biggest wheel I can get in it and I'll
> have a motor that is capable of running 11 sec all day long with stock vw
> parts. My biggest problem is if they will fit. I mean anything 9:5.1 and
> under will be suitable for me. I have a TEC 2 right now about to go into a
> stock 16v motor.
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