Knife edge crank
-
- Cake Laaitie Killer
- Posts: 8512
- Registered for: 13 years 3 months
- Car Make: VW
- Car Model: Citi 1.9i 8v
- Membership No: missing
- Location: 2nd right after Shell garage
Knife edge crank
What does this mean? I hear alot of guys talking about it & also the TDi crank conversion.
Whats the benefit of it & what application is it intended? (Track car, drag car, daily)
Thanks
1893cc racecar - back in the garage
Solo786 wrote:after you bust the rsi , should have put down the window and asked "Do you even lift bro?"
-
- General
- Posts: 9591
- Registered for: 18 years
- Car Make: VW
- Car Model: Golf GT
- Membership No: 1464
- Location: Springs
Re: Knife edge crank
The stroke on a TDi crank is 95.5mm, larger than a std 2.0 crank's 92.8mm so it will give you slightly larger dispacement.
Current rides:
VW Golf - 83 GT 2.1 16V 2-door with throttles
VW Golf - 78 LS 2.0 8V 4-door (2.1 ABF with throttles in progress)
VW Golf - '08 Citi Storm - 1.4 for now
Hyundai - 1.4 Getz (daily)
VW Golf - 83 GT 2.1 16V 2-door with throttles
VW Golf - 78 LS 2.0 8V 4-door (2.1 ABF with throttles in progress)
VW Golf - '08 Citi Storm - 1.4 for now
Hyundai - 1.4 Getz (daily)
-
- Cake Laaitie Killer
- Posts: 8512
- Registered for: 13 years 3 months
- Car Make: VW
- Car Model: Citi 1.9i 8v
- Membership No: missing
- Location: 2nd right after Shell garage
Re: Knife edge crank
Thats what knife edge means? lol I taught it made your car rev up quickerTorker wrote:The stroke on a TDi crank is 95.5mm, larger than a std 2.0 crank's 92.8mm so it will give you slightly larger dispacement.
1893cc racecar - back in the garage
Solo786 wrote:after you bust the rsi , should have put down the window and asked "Do you even lift bro?"
-
- General
- Posts: 9591
- Registered for: 18 years
- Car Make: VW
- Car Model: Golf GT
- Membership No: 1464
- Location: Springs
Re: Knife edge crank
Knife edging is something different where they take metal of the crank - makes it lighter and more aerodynamic so it should make your engine rev up quicker. You can see the taper on the counter weights on the crank in the photo - that's knife edging:Naku786 wrote:Thats what knife edge means? lol I taught it made your car rev up quickerTorker wrote:The stroke on a TDi crank is 95.5mm, larger than a std 2.0 crank's 92.8mm so it will give you slightly larger dispacement.
Current rides:
VW Golf - 83 GT 2.1 16V 2-door with throttles
VW Golf - 78 LS 2.0 8V 4-door (2.1 ABF with throttles in progress)
VW Golf - '08 Citi Storm - 1.4 for now
Hyundai - 1.4 Getz (daily)
VW Golf - 83 GT 2.1 16V 2-door with throttles
VW Golf - 78 LS 2.0 8V 4-door (2.1 ABF with throttles in progress)
VW Golf - '08 Citi Storm - 1.4 for now
Hyundai - 1.4 Getz (daily)
-
- Cake Laaitie Killer
- Posts: 8512
- Registered for: 13 years 3 months
- Car Make: VW
- Car Model: Citi 1.9i 8v
- Membership No: missing
- Location: 2nd right after Shell garage
Re: Knife edge crank
Will this decrease the amount of torque(nm) the car produces?Torker wrote: Knife edging is something different where they take metal of the crank - makes it lighter and more aerodynamic so it should make your engine rev up quicker. You can see the taper on the counter weights on the crank in the photo - that's knife edging:
1893cc racecar - back in the garage
Solo786 wrote:after you bust the rsi , should have put down the window and asked "Do you even lift bro?"
-
- Brigadier
- Posts: 6400
- Registered for: 21 years 7 months
- Membership No: 1161
Re: Knife edge crank
Im impressed.. Normally by this time of a thread with this question everybody would be telling you not to knife edge, not to even think about it and to stay away...
- Coroner
- Major
- Posts: 3120
- Registered for: 15 years 1 month
- Car Make: VW / Subaru
- Car Model: Citi 1600 / 2.0 T
- Membership No: 1502
- Location: Pretoria
Re: Knife edge crank
As far as my research goes, its not recommended for a daily. Also according to the Mythbusters thread the TDI crank eats bearings on a normal 2l.gtidon wrote:Im impressed.. Normally by this time of a thread with this question everybody would be telling you not to knife edge, not to even think about it and to stay away...
If not done correctly you could end up with a lot of damage.
Speed is money......how fast do you want to go?