Cams do make a difference on the dyno

[Boosted Supra]

Went to dyno the car last night 4/8/05

My old dyno run w/o cams

SAE: 524rwhp 493rwtq @1.8 bar (26psi)

Uncorrected: 541rwhp 509rwtq

New Dyno run w/ cams

SAE: 543rwhp 537rwtq @1.7 bar (24psi)

Uncorrected: 565rwhp 557rwtq

Webcam Specs:

Valve Lash: .008 intake .010 exh
Valve Lift: .322 intake .322 exh
Duration: 244 degrees intake 244 degrees exh
Duration @ .050: 218 degrees intake 218 degrees exh
Lobe Center: 107 degrees intake 115 degrees exh

Intake opens @ 2 degrees before TDC
Exhaust opens @ 44 degrees before TDC

Intake closes @ 36 degrees after TDC
Exhaust closes @ -6 degree's after TDC

 

[CPT Furious]

I like how you made more power on less boost...always good!

 

[oneandgone]

Wow! Talk about picking up some torque!! At what RPM did the Hp peak? Also, the tq?

You're running an SP-63, right?

 

[mkIIIman089]

I'm also interested in what RPM you peaked HP at. How much of a difference do you guys think cams could make on a less highly tuned engine?

 

[silver88turbo]

Graphs would be AWESOME.

 

[Dirgle]

Impressive! It's good to see some hard numbers. I'm also curious to see how the curves changed. So I second the graphs. Good Job :thumbup:

 

[DEFIANT 7M]

Great numbers...I have never understood why nobody thought cams had no effect on 7Ms. It still is an engine, right :rant2: Great numbers.... thanks.

 

[IHI-RHC7]

Awesome, I can't wait to see what 264s do!

 

[Arther3]

1st
what changes does anyone think would be needed for 264's as far as springs and what other effects (positive or negative) would that have.
2nd
isnt the HKS 272?

 

[IHI-RHC7]

HKS made 258, 264 and 272 IIRC.
Stock springs should be fine, although I'm going to go with the TRD units.
Stock ECU limits revs to 6750, so the 264s shouldn't be to agressive for shim over bucket lifters.
Boosted, are those hard welded cams? and do you have a part number?

 

[Race Bred]

Bad ass, I am glad to finally see some numbers with aftermarket 7m cams. I guess the old mantra that there is no better cam than stock is false... Unless you lost a lot of power down low with the new cams. Post up the graphs!

 

[Boosted Supra]

I have the graph but have to scan it. AS far as part # for the cams, I'm sure I do, I have to look for it.

 

[Boosted Supra]

Sorry no part numbers, just call them up with my specs.

 

[Boosted Supra]

Here's the Dyno comparo, yea I know the AF's looks kind of high but the Wideband was running weird. We also had a MOTEC Wideband running at the same time and it was reading 11.8's on the AF's while the dyno wideband was running above 12.5. I believe the MOTEC more, reason why is because when I made 524, from 4k-7k rpms on AFC it was around -20 - -28. It's now at -6 - -8, no way a cams would require so much more fuel. VPC Gain is at 12 o clock. I know I'm definitely running rich cause I still see black smoke.

 

[88turboma71]

hey boosted, great numbers. Who did your intercooler piping?

 

[Paradox]

very impressive #'s, that thing must be a beast to drive :sonic:

 

[QWIKSTRIKE]

Nice numbers Manny seems like boost camein a little later the second time, but you picked up nice torque!


Anthony

 

[87turbosupra]

Nice numbers. How much did those run you?

 

[7MGTEJoe]

Those cams look like there isn't much compromise in them. :bigthumb: I love how broad the peak is, it looks very useable. Did you install them straight up or are those the final numbers after playing with cam timing?

 

[sorcereur]

Your HP curve in the winpep graph looks like someone starting to draw a supra..... The TQ curve looks like a saab or porsche 911, and the A/F... well, just an A/F graph. :biggrinki
Good direction you're going... more power with less boost.