RPNJ82 wrote:i was just wondering if the rods on 07k are same as 1.8ts???? the both are 144mm and the deck height is 220 for both engines...only question is the wrist pin size
alxdgr8 wrote:Hank has been machining FSI pistons for lower compression for use in non-FSI budget builds...might be worth reaching out to him. He seems to think he could make some decent power on them, but hasn't found someone to want to test really test the limits of them...customers usually just opt for forged pistsons
alxdgr8 wrote:I think the FSI pistsons he was refering to were TTRS 07k, so 10:1 and then he'd machine them to around 9:1. Supposedly a better/stronger design over the plane N/A 07k piston. I think I meant to post this in the other thread since we're talking about rods here haha.
RPNJ82 wrote:Any follow Ups on 2.0t pistons in 07k
speeding-g60 wrote:what about pin height in the piston? taking that into account?
vt10vt wrote:Okay so I finally have the two in front of me.
Wrist pins are the same size (19mm) and the pin height (measured from top of wrist pin hole to top of piston):
1.8t: .900"
07k: .775"
(diff of .125)
Top oil ring to top of piston:
1.8t: .237"
07k: .125"
(diff of .112")
So they definitely won't drop in. To make it even further off the 07k has a pretty deep bowl and valve reliefs in addition to the pin height difference problem. The 07k piston is also much narrower than the 1.8t, but it seems like a weight/engineering thing, not a clearance thing. 07k wrist pin is .250" shorter.
Rods measure and look identical. What I'm not sure on though is whether 20mm rods would work. I would imagine they would since the 07k got 20mm and up wrist pin sizes, but all I have in front of me is a 19mm wrist pin 07k and 19mm 1.8t.
speeding-g60 wrote:vt10vt wrote:Okay so I finally have the two in front of me.
Wrist pins are the same size (19mm) and the pin height (measured from top of wrist pin hole to top of piston):
1.8t: .900"
07k: .775"
(diff of .125)
Top oil ring to top of piston:
1.8t: .237"
07k: .125"
(diff of .112")
So they definitely won't drop in. To make it even further off the 07k has a pretty deep bowl and valve reliefs in addition to the pin height difference problem. The 07k piston is also much narrower than the 1.8t, but it seems like a weight/engineering thing, not a clearance thing. 07k wrist pin is .250" shorter.
Rods measure and look identical. What I'm not sure on though is whether 20mm rods would work. I would imagine they would since the 07k got 20mm and up wrist pin sizes, but all I have in front of me is a 19mm wrist pin 07k and 19mm 1.8t.
fixed that for you.
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