Driftomagnifico

You don't look at it any differently than I do. I've only taken this car to the "strip" once, and I was glad to not break anything. It was fun, but I prefer said "real" racing.

All I have written down is the intake side

.100" - 98 CFM
.200" - 189 CFM
.300" - 242 CFM
.400" - 277 CFM
.500" - 304 CFM
.600" - 322 CFM

Intake : 1mm O/S Valves, Backcut, Radius'd Seat
Exhaust : 1mm O/S Valves, Radius'd Seat, Step Cut Down (Reduced not Removed)

Beryllium Copper Seats.
Phosphor Bronze Guides.

Manifold tuned around 8500 - 9000 RPM window, torque begins to drop off after ~9000 RPM.

Camshaft Specs (OEM SR16VE N1 Cams)

Intake Cam
Low Intake Duration: 220 Adv. / 190 @ 0.050"
Low Intake Lift: 8.4mm (0.331")
Low Intake Center Angle: 110

High Intake Duration: 288 Adv. / 243 @ 0.050"
High Intake Lift: 12.0mm (0.472")
High Intake Center Angle: 104

Exhaust cam
Low Exhaust Duration: 244 Adv. / 144 @ 0.050"
Low Exhaust Lift: 7.95mm (0.313")
Low Exhaust Center Angle:122

High Exhaust Duration: 288 Adv. / 241 @ 0.050"
High Exhaust Lift: 11.9mm (0.469")
High Exhaust Center Angle: 110

Intake Low: Opens at 0deg before TDC, Closes at 40deg After BDC
Intake High: Opens at 40deg before TDC, Closes at 68deg After BDC
Exhaust Low: Opens at 64deg before BDC, Closes at 0deg After TDC
Exhaust High: Opens at 74deg before BDC, Closes at 34deg After TDC

This is before I modified the timing via Cam Gears. I can't remember my cam gear settings, I changed them too many times, and I don't care to pop the valve cover off. They were altered to provide more midrange power (5000 - 7000 RPM) rather than peak numbers.

Cam Switch Over
Intake - 4600 RPM
Exhaust - 4200 RPM

Within the ports, they were enlarged and I had a slope built into the port to pick up some velocity at the sake of an increase in flow friction. Typical smoothing on the intake side, removed some of the bend radius to promote more swirl on intake side. Overall emphasis was on manipulation of the flow to promote velocity and geometry rather than peak flow. Too be honest the head flow numbers were higher than I wanted, but there hasn't been alot of stateside work on these engines and some of my assumptions didn't work out the same way (books vs. reality).

Intake manifold design took place after the headwork so as to correct any port flow inconsistences. After getting such high numbers on the intake side I opted for a slightly longer runner, with a converging reduction, than originally planned. This moved the resonance down quite a bit and seemed to work properly as designed. I kinda wish I would have went with a narrower manifold runner to amplify the midrange but oh well. The choke area is designed in to be a limiter, and getting near it's flow limit produces rather high port Mach, I saw a quick reduction in torque on my higher power runs above 9000 RPM compared to the lesser boost runs.

Hopefully soon I will be helping Porschefile tear down his 951 engine so I can take a look at it to get a better understanding of where the 951 can grow.

Driftomagnifico

Then what do you call this?



BTW, I run a GT3582R and it would explode if it didn't have a surge housing.

tedesco

From Garrett you can NOT get a GT3582r with anti surge housing. I know for sure because I tried to get one. You get these housings for the GT3076 and for the GT40 s. Both housings do not siute the trim of the 3582r compressor and therefore need to be machined. But I would be interested where you bought.

I think enough has been said now. It starts to become more a thing of beeing wrong or right which does not get anthing forward...

toddk911

So what would the a/r and trim be of the GT 35/40 with the KKK #8 ???

333pg333

What happened to this thread? It's a good 'un and deserves to continue. C'mon boys, push on.

333pg333

This is applicable to some of us at the moment so I brought it back. Wes, if you're out there what did you wind up doing?

WesM951

I'm around, i havn't done anything yet. I'm saving up some cash so i can do something when i finally decide

ibkevin

I went with a TO4e 60trim, seems to to pull 1 bar at ~2800 but there are a couple of little things I need to fix to really optimize it. I'm going with a stage II IC and replace the .8 Tial with a 1. I really need to install the ZT-2 to make sure I'm getting all I can out ot the Tial.

TRP951

is this with a 2.8 liter? what gear was it done in? cause those numbers seem real low for a 60 trim.

333pg333

Yes 1 bar at 28 is amazing! I need 38 on my old K26/8 a.t.m. lol
Wes good to hear your still around. How far off do you think you are for your updates?
Patrick