You're confusing the colors. Both blue lines are torque and both red lines are HP. Just look at the curves themselves. Torque goes up first, peaks, then goes down the rest of the way. HP starts low then keeps climbing way up high and only levels out at the very end.

 

Whoops.

Scorke

 

sorry tired, i fixed my question.

 

hey david what do u think made it spool that much better??

 

I think when Dave stated those numbers, he probably wasn't subtracing peak numbers like you did. Maybe he was showing differences in points on the graph, not sure. Either way, there's a great difference. I doubt he went to school with Bush, Bush can't add or subtract two and three digit numbers, lol.

 

thats easy. better flow. you better believe those revolver cams are responsible for a large part of it.

 

OT: No GW wasn't in my class but Kerry was teaching math that year that would explain the error there.

 

Didn't Kerry create Math?

 

the head work has something to do with it too. cams alone can sway spool both ways. which is why i asked about the timing.

i also want to kind of figure out exactly how much hp and spool is gained off of headwork in general.

 

Notice the car had a standalone too. I've read the revolver cams are a pretty hairy setup and need a standalone to properly tune.

How much dyno tuning was needed after the new 'minor changes' in setup?

 

i was under the impression that the more agressive lift cams would actaully hurt the spool and help top end

 

That is probably the best GT35R curve I have seen.

is that a built bottom end or a 2.0 or stock or what?

 

Thanks David and Daniel for all the hard work. The car weighs about 3500lbs with driver (large driver) and the 11.1 was with a 1.79 60ft. The drivetrain is totally stock except for the exedy twin disc. My goal was to run my 10 sec pass with mph vs 60ft and keep my drivetrain in one piece. I actually put air IN my tires for some wheelspin at launch. I should see a 10.70 or so this Sunday if all goes well.

Drive to the track, run a couple 10 second passes, then drive 1500 hundred miles to Texas and get 25+ mpg. Ya gotta love the freakin EVO!!

Mike

 

Dang, my math does suck. Funny thing was when I typed it I was thinking that seems like more of a gain than I told Mike he had when I was on the phone. You got me in the math correction. Hope that makes you super proud, everybody has to have something they are good at.

Post#2, I'd say changing cams, changing FMIC, poring an intake manifold and throttle body and swapping out a turbine housing on an already built combination and gaining 82 ft lbs of torque and 66 whp is a minor change in parts.

Post#3, those runs were on C16, both of them.

Post #4, cams are installed straight up, like we always install them.

There is a huge gain in spool up and low end power between the before and after on this car.

 

The cylinder head is VERY mildy ported, not our full Stage 3 work. The head was ported before this latest round of changes. The head work had nothing to do with the increase in power.

The Revolver cams have had a great increase in torque in every single EVO we have installed them in. In this case I'd say the big gains were a combination of the FMIC/cams mostly. It is all about combination though.

Also, I have said this before, will say it again. EVERY time I have installed a larger set of cams in an EVO I have seen better low end/mid range and top end power. I even see this with the stock turbos. In other words the entire curve improves when going from stock cams to 264's, then 272's, then 280's and then to Revolvers.

Bottom end is our Stage 3, 2 liter engine.

I'd say our GT35R kit has the best spool up of any GT35R kit I have tested. We can see 20 psi at 4500 rpm with our kit.