What is the standard cam specs

[Cobber]

As the post title says does anybody have the standard cam specs for the 1UZ?

inlet lift
exh lift
lobe center
valve overlap
inlet duration
exh duration

Thanks

 

[rivmasta]

As the post title says does anybody have the standard cam specs for the 1UZ?

inlet lift
exh lift
lobe center
valve overlap
inlet duration
exh duration

Thanks

As supplied by MWP for EAP file

inlet lift 7.65mm
exh lift 7.75mm
lobe center 109deg
valve overlap
inlet duration (@.050") 224deg
exh duration (@.050") 224deg

 

[Cobber]

Thanks for that,

I'm just working out the $ per hp gain from some new cam profiles.

 

[rivmasta]

As its for N/A Im interested!

 

[Cobber]

I,m supercharging so I want to work out what is going to be the restrictions with standard cams.

So just to confirm there is a 6 degree overlap between inlet opening and exhaust shutting?

From what I can work out the standard cams work quite well for lower boost set ups.

I'm doing these calcs on dyno 2000 and will post them when I work out how to export the data.

Rivmasta
To get some good value out of your trick twin throttle body set up some more lift and good extractor design would definatly be on the cards to pump up the torque, the standard cams still look like they work quite well.

 

[Damien]

I believe stock overlap is 9 degrees:

"Intake valves open at 6 deg BTDC and close at 46 deg ABDC, and exhaust valves open at 46deg BBDC and close at 3 deg ATDC. This gives an intake duration of 232 deg, an exhaust duration of 229 deg and an overlap of 9 deg."

P 8&9 For the Lexus 1UZ-FE
21ST Century Performace. Julian Edgar

 

[rivmasta]

so the stock cam specs Ive been using are wrong?

The numbers I was provided are:
intake actions (@ 0.050") 3deg and 41 deg,
exhaust actions 41deg and 3deg
giving both cams 224deg duration.

can anyone verify?

 

[Damien]

I think the figures I quoted from the book are at the seat - would that be consistent with what you had for 0.050"?

 

[rivmasta]

Will check seat no's for my numbers... watch this space...

 

[Lextreme II]

This diagram might help

 

[doey]

Kevin at the camshaft shop in New Zealand told me the The stock exhaust cam is.315 cam lift, 195 degrees duration @ .050"

Does that mean the 229" is a seat to seat measurement?

46+3+180=229