tuned the race car today

[Yea, Right]

Specs: RSI 2.5L bottom end, Pacman/Erland cox 8V head, C2 camshaft with custom lobe centers

405 Whp at 16psi
448 whp at 18 psi
475 whp at 22 psi

I stopped right there, but we could have done well over 500whp and run up to 30 psi if desired. Dyno plots to come.

Bottom line, big HP pulling past 7k and and the flattest torque curve you have ever seen from 4k-7k.

8V ftmfw

OK, here are the scans.

Two things to note: 1) the motor was still making power at 7k where I chose to set the rpm limit. 2) there is a rich dip between 4500 and 5000 that would not tune out. We think there is some sort of resonance in the intake manifold at that point. I wonder what a custom intake will do?

[maxman142001]

wow! Awesome man

I want pics of the Pacman 8v head

[pooprah]

with the new flares and weels how much power can you really put down to the ground? probably close to all 500 :e-shrug:

[Jerd]

wtfs a Pacman/Erland cox 8V head?

Dude, you have issues if you didnt make videos or take pictures.

Awesome though, wooo for 8v!!!!

[Volvorules]

Awesome Peter, I am so jealous. Can't wait till mine gets here (if it ever does...)

[maxman142001]

wtfs a Pacman/Erland cox 8V head?

Dude, you have issues if you didnt make videos or take pictures.

Awesome though, wooo for 8v!!!!

There's a guy/company in Europe that does some amazing head work....Pretty rare

[maxman142001]

wtfs a Pacman/Erland cox 8V head?

Dude, you have issues if you didnt make videos or take pictures.

Awesome though, wooo for 8v!!!!

spec on Pacman heads:

"they are about 3300 dollars for a 8v 531 head with complete custom works and porting. Includes 46/38 valves, custom enem cam shaft, shim under bucket lifters, dual valve springs..."

[fryea]

What did you use for engine management? Any details to spill there?

[Lord Tentacle]

What did you use for engine management? Any details to spill there?

sds

[JohnLane]

Well done Peter!

[Tamnakz]

Nice man!

[aplitz]

Awesome work Peter! I feel fortunate to have seen your car in person, next on the list is to see it in action at the track.

[linuxman51]

bling bling, bitchin' numbers man!

[B-dub]

Amazing work Peter. Nicely done. How sexy like does that 2.5 rev?

[amargill19?]

Wow

[Bishop]

Wow, just wow man, the 405hp at 16psi impresses the crap out of me, from an 8v tractor engine...

[RedFridge]

Even I know who Erland Cox is.

Beautiful numbers Peter. Hope life is treating you well.

[linuxman51]

so come forth with these dyno plots eh? :-D

[ovlover]

Nice!!!!!! i watched a show on foxtel (pay tv,cable what ever you want to call it) and they made ford muscle cars and this one was an xy and they made500horses at the wheels and that just smoked all the time. we need videos and for us dial up losers, pictures lol sweet as mate!!!!! nice for an 8v

[Booster]

Great numbers

Posted via Mobile Device

[Dr Dokeh]

Outstanding.

[Canuckvolvo]

Unreal!
What rpm? (yes I know, the dyno plots will answer)
What CR?
43whp gain from 16-18psi, then only 27whp from 18-22. Head starting to choke things off?

[badvlvo]

so come forth with these dyno plots eh? :-D

plots!

[Karl Buchka]

Wow, those look like some nice numbers. Plots please!

[Captain Bondo]

Wow, just wow man, the 405hp at 16psi impresses the crap out of me, from an 8v tractor engine...


Agreed. That is seriously impressive. Peter, what turbo are you running these days?

[linuxman51]

last i heard it was a 60-1

[Volvorules]

Head starting to choke things off?

HAHAHAHAHahahahhahahAHAHAHahhahah

You're joking, right?:omg:

[Captain Bondo]

HAHAHAHAHahahahhahahAHAHAHahhahah

You're joking, right?:omg:


Yeah- we are talking about a head that is doing like, 200whp NA. Doubt it is a restriction.

I would put money on it being the turbo reaching the upper right side of the compressor map. Hence the question about the turbo.

[suterman]

Thats an amazing price for the head considering what it can help achieve.

I wish my 8v was 405hp:)

pics!

[linuxman51]

Yeah- we are talking about a head that is doing like, 200whp NA. Doubt it is a restriction.

I would put money on it being the turbo reaching the upper right side of the compressor map. Hence the question about the turbo.

possibly intake manifold and throttle body

[stylngle2003]

those are sick numbers. i wanna see plots!

gotta wonder too about the system running out of efficiency. it's definitely not the head and cam

[740ATL]

That's amazing what headwork and cam can do for you. I would love to see dyno plots.

[volvo-slyder]

YAY Volvo!

[klr142]

spec on Pacman heads:

"they are about 3300 dollars for a 8v 531 head with complete custom works and porting. Includes 46/38 valves, custom enem cam shaft, shim under bucket lifters, dual valve springs..."In this case I think they're 48/40s, and who knows what else... It's just REAL hard to rotate the camshaft on the head when it's not bolted down to an engine... Them lobes are HUGEEEEEEEEEEEEEEEEEEEEEEEE.
Awesome work Peter! I feel fortunate to have seen your car in person, next on the list is to see it in action at the track.Seriously. Can. Not. Wait.
How sexy like does that 2.5 rev?Mmmmmmmmmmmmmmmph. Way too sexy. I guess on the dyno it was like WHAMonce it hit the higher boost.
Unreal!
What rpm? (yes I know, the dyno plots will answer)
What CR?
43whp gain from 16-18psi, then only 27whp from 18-22. Head starting to choke things off?8.2:1. Rpm, well, I wish he would've taken it higher, because from the looks of things it wants to pull to 7500 or maybe even higher, butttttt Peter wants to keep at least one engine together and strong for a good while, so... Same with the boost. Part of the reason for the smaller increase from the last increase in boost is because they richened it back up a bit during that jump to get back down to conservative afr's. Then there's also the completely stock intake manifold with a 59mm(if i remember correctly) MVP "big bore" throttle body.
I wish my 8v was 405hp:)
You mean 551hp?
possibly intake manifold and throttle bodyIndeed my good sir.


It sounds so sexy. And just with the way it starts up, and revs, even before making any boost, just at a stop, mmmmmmmmmmmmmm. MMMMMMMMMMMMMMMMM!!!!!!!!!!!!

For those that hadn't seen a short snippet of nothing special before it was broken in and being smooth with the gas:
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[Yea, Right]

First post has been updated

[Kuikka]

Yeah- we are talking about a head that is doing like, 200whp NA. Doubt it is a restriction.

I would put money on it being the turbo reaching the upper right side of the compressor map. Hence the question about the turbo.

My quess is just exhaust pressures rising a tad closer to boost, I'd say it's normal.

[Captain Bondo]

My quess is just exhaust pressures rising a tad closer to boost, I'd say it's normal.

Yes- that is what I am getting at. That would be primarily a function of the turbine housing. That is why I asked what turbo. ;-)

[84 Blue 240]

NICE!!! Torque curve looks awesome!

[242DownLow]

love the sound on that

[Brickster151]

That is beautiful Peter. A custom intake would probably help out a good amount.

**** this I'm gonna go work on my car.

[klr142]

Look at the curves though, and look how it is by no means done making power or climbing when he shuts it down at 7 grand... Crazy.

[BDKR]

I'm seriously impressed. I've had no doubts about the head, but wouldn't have exepected to see that out of the stock intake manifold.

Killer Job P! Killer sound and big power. An inspiration!

[suterman]

You mean 551hp?


405 will do.

[qwkswede]

I'm diggin it. that torque curve is flippin SWEEET.

[NChoy]

You're my hero Pete... you always will be.

Too bad when I get back to Oregon race season will be over. I'll have to wait till next summer to see that car in action.

[davidmacq]

What is lift on C2 cam?

So exhaust manifold isn't stock anymore right?

Sweet numbers and sound.

[kiwibrick]

:urgod:

And thats all I have to say about that :-D

[242Bleek]

So what turbo is that again?

[blkaplan]

What is lift on C2 cam?

So exhaust manifold isn't stock anymore right?

Sweet numbers and sound.

13.9mm :oogle:

[badvlvo]

13.9mm :oogle:

That's pretty small isn't it?:omg:

[davidmacq]

KG2T is just under 11mm I think.

[BDKR]

KG2T is just under 11mm I think.

10.5 on the intake side. 11.9 on the hot side. I would say that 10.5 number isn't a detriment considering the head work and increased valve size.

[Volvorules]

10.5 on the intake side. 11.9 on the hot side. I would say that 10.5 number isn't a detriment considering the head work and increased valve size.

He's not using a KG2T or whatever, it's a C2. Much more radical cam than that regular sissy stuff:rofl:

[BDKR]

He's not using a KG2T or whatever, it's a C2. Much more radical cam than that regular sissy stuff:rofl:

Ahhh! Now I know. Based on the post above, I thought differently.

And that thing is a monster with 13+ lift on the intake side!

[Mogwai]

Awesome! Got more specs on the rest of the car? Suspension/brakes/engine internals?

[klr142]

Yeah, custom. Haha, there's wayyyyyyyyyy too much to list as to what is custom on this thing.

Latest fun stuff is a little bit of undertray/diffuser work at the rear...

Ohlins shocks, no bushings anywhere, all solid rod ends almost everywhere. Adjustable Kaphlenke control arms up front, rear Kaphlenke subframe, coil-overs, Wilwood brakes up front, other custom bodywork/cagework strut tower "brace", stufffffffffff...

[linuxman51]

dang, still talking about this? I figured after the graphs were posted that it would be tucked away in the tbricks shrine of all that is holy and not to be defiled by the commoners :-P :-D

[BDKR]

dang, still talking about this? I figured after the graphs were posted that it would be tucked away in the tbricks shrine of all that is holy and not to be defiled by the commoners :-P :-D

:rofl: :rofl:

[Group A]

rear Kaphlenke subframeLook again. ;-)

[shaved240]

making power all the way to redline.

are these 48/40 valves?

[blkaplan]

Look again. ;-)

unless you stole it off the car it should still be there.

[Yea, Right]

Look again. ;-)

Whats up undercover lover? lol

[Yea, Right]

making power all the way to redline.

are these 48/40 valves?

Yup, and yup.

[500dollar744ti]

damn, ballllllller numbers man! great success!!1 :bow:

[klr142]

Look again. ;-)Uh, when's the last time you got a peek?
Yup, and yup.Correction. Making power PAST the redline...

And, I thought you said you didn't know what size valves you had? :-P:-P:-P

[Tom Wiley]

That's pretty small isn't it?:omg:

thats what she said.

[GreatDaneShane]

Burn!

[volvorsport]

great numbers !!

still $3300 dollars saved going to 16v :lol:

just goes to show that the most important thing with turbo engines is BOOST and getting it in there early !

[Citysurf740]

I always knew single cams where able to do awesome things.. way to go I am 7 years behind you. lol:rofl:

[shaved240]

405whp on only 16 psi is amazing!

miracle head is all i'm saying. wonder if it flows the same as a stock 16v head

[Poik]

With those numbers I wouldn't doubt if it even flows more than a 16v, on the intake at least. Very impressive.

[The Aspirator]

WOAH.... Inspirational to say the least.

[Group A]

Whats up undercover lover? lol
Same ole same ole. Don't get around here very often anymore. Better things to waste my time on, should have learned that from you years ago.

You switch out your modified rear subframe (made by Tony or you?)? Thought the Kaplhenke unit was still sitting against the wall after being removed from Barb's old car to sell the car? :cool:

[klr142]

You're probably thinking back a couple of trips to Portland.

[pooprah]

those tires are weak, what are they spares?

[klr142]

those tires are weak, what are they spares?They're his trailer tires.

[pooprah]

god im joking, i hate my car :lol:

[stylngle2003]

peter, could you send/pm me a few pics of your axle limiting straps the next time you get a chance? i'd like to do something similar, and the location on the swaybar is more elegant than what i could surmise on the spring seat. thanks!

[klr142]

god im jokingMe too.

[pooprah]

........yea right?:rofl: