I spoke to a Garrett distributor yesterday who actually seemed to know how to properly size a turbo for a rear mount. He said Garrett doesn't make an ideal turbo but that one cuold be made custom for my application with Garrett parts. He suggested a 61mm P trim with a .84 turbine A/R. Infinite, any way to map this? He felt it would very minimal lag and produce well into the 400 rear wheel HP with over 500 at the crank.

This looks the one:
http://cgi.ebay.com/ebaymotors/GARRE...Q5fAccessories

 

sorry, for some reason i stopped getting email updates about this thread
the turbo you posted is basically a gt35r *******.
gt40 (gt35r compressor wheel) and a p-trim t4 turbine wheel.

based off of my mappin, youre going to be to the right of the choke line, so your motor will be inesting more air than the turbo can deliver.

the z06 makes 505 at the crank, our z06 will walk all over any crossfire, the z06 is just a superior machine in basically every respect.

i'll try and find some of the popular sizes the v8 guys to show you, with displacement on your side, you can run a large turbo.

you dont want a 500hp car that makes 14psi off the line or way down low, you wont have any traction and it will make the car undrivable... lag is your friend in this case

 

A crappy old American car will never be as good as a German manufactured machine. The XF just needs some more power. I have driven a Z06 and its like driving a train. The old American addage, "power at the cost of handling." The Z06 couldn't handle to save its drivers life. All my humble opinion of course. Thank you.

 

now that's defending the XF...lol....but I miss my Z somedays, but I do enjoy my XF's....because, both of them didn't cost what my old Z cost....

 

 

I'm not sure which z06 you drove.. but saying it doesn't handle leads me to beleive you can't handle it to save your life, I'd like to see your (or anyone's) crossfire pull 1.05 G in a skidpad (with runflats). And "some more power" isn't going to bring an NA into z06 territory, sorry. The z06 may have a cheap interior, but everything it does makes up for it. To think that a 12 year old German design is engineered to a higher standard than a modern world class performance car is ignorant. As far as I know our frame rails aren't hydroformed, we don't have any carbon fiber body panels, we don't have a hand-assembled dry sumped race engine, our tranny isn't in the rear of the car to improve weight distribution, and absolutely will not handle 500+hp (manual). I can't really find 1 thing the crossfire does better besides have an orangy brown leather interior. I don't see what all the German engineering hype is about, I feel like its more of a snob appeal / media thing.

 

well said my friend!

 

well, said and some of it true...but since my "03, I don't think they have made that great of improvement to justify $100K car...and you can't enjoy it, unless you the $$$$$$$. I enjoy the XF and I can tell you first hand, you had better be a very good driver, because the guy who owns mine now, can't keep up the XF I have...and he does pretty well...don't slam something people can enjoy I have $40K in 2 cars I can enjoy and keep up with most of the exotics our here...and we have a host of them...$$$ can buy you the toys, but can you drive them????? The vette owners I ran with, babied theirs, and would never think of running them hard...too much invested in them to tear them up was always their response. I buy them to drive and enjoy...and like I said, I miss it from time to time...but I love the little cars I have, and they do just fine on the track, both round and straight....and it takes a lot more HP to out run the vert...so really, who has the better car....and I feel, from 1st hand experience, the snob appeal was with the vette crowd...

 

That's what I like about the word opinion, frees my dumb *** from responsibility. To be frank, I just don't like American cars. With the skidpad, I will say that the Crossfire most definitely needs to be lowered and have all AMG suspension, AMG parts are the crown Jewell of Mercedes. The Corvette also comes with better tires I believe. Without those 3 things, our XF would loose out. But I believe the potential in an XF far surpasses a Corvette's potential in every Category,, but we will never beat it off of the line. I am not being bias, if I got an American car it would definitely be a Corvette. The look better and beat a Vipers and Ford GT's. The Turquoise Corvettes, sign me up. Mercedes' new AMG parts and engines are compatible with our xf's and that's what scares me. The monstrosity that that mad scientist Lantana is building is going to wreck even the new ZR1 in terms of top out, I'm not sure of his plans for handeling mods. Just how I feel. Dont take anything you read on the internet too much to heart. And can somebody tell me our skidpad g's for the N/A and the SRT/6. and check the SLK 320 and 32 AMG. They might have dumbed a few things down coming into America. Thanks all.

 

I agree.

The Z06 has incredibly wide rubber, and its weight is more evenly distributed amongst all four tires. It also has a track width 4" wider, which reduces the amount of weight transfer during turns.

It's not physically possible for the Z06 to "not handle"

 

Teck-9 - I'm not trying to take shots at you or call you a dumb-*** in any way, but the z06 is holy to me lol. I have driven both the crossfire (daily) and the c6 z06 (on several occasions) and I can tell you based on personal experience that the crossfire is a very long way behind the z06 in terms of performance, and it would be somewhat of an engineering feat to get them on the same level. I try not to form my opinions based on motor trend numbers, as I understand there are factors that cannot be measured in terms of physics and numbers that make a car truly fast. Lantana's car should be brutally fast, but saying it will be faster then a zr1 is pure speculation, and is more of a numbers game than relating skidpad g's to handling dynamics. I can't help but think it will behave like an sl65, meaning it will have an extreme amount of power and will blow past 90+% of the cars on the road, but will not be a 1/4 mile car and should not be able to beat a zr1. I feel like if price is a factor in a perfomance argument, Hondas are the ultimate performance cars... I don't own a Honda and don't plan on buying one lol, but they can run 9's (sloppy, nothing below 5000 rpm 9's) for under $10k. I completely understand what you are saying, and your opinions are absolutely valid.. but WE (I'm doing it too) are comparing apples to oranges. They are both delicious, but have different properties that make them what they are.
Besides..apples are better anyway .

 

Stock ZR1's run low 13's out here in vegas. There's videos of my buddy's turbo AWD GMC van beating one at LVMS track. lol. Who in their right mind would build a high powered s/c'd sports car with 20'' rims.






PS I know they can kick *** if you get some smaller rims and drag radials.

 

whoever runs that needs to learn how to drive. i have driven 2 c6 z06s (2006 and a 2007) and personally put the 2006 (stock) in the low 12s consistently and i'm not a great drag racer. a zr1 (not z51) should be in the low 11s or high 10s with a decent driver, 13s is an embarrassment.

 

I wonder about boost on a non amg engine. there is no 5.0 amg and the only 4.3 amg is 10 to 13 years old. The 5.4s are very expensive and from what I hear have too high a compression ratio for boost. What do you guys recommend for a turbo V8?

 

Well,the 5.5L engines can stand boost. You could use an E550 engine, it could withstand boost as the E55's are SC'd 5.5L engines. Even more so, for the debate of the "but it's different" idea...There are multiple C55's (N/A 5.5L) that have gone with Kleeman to S/C the 5.5L.

It could work.

 

Ross can make pistons for benzo motors and they should be under $1k. It depends of how nuts you want to go

 

Would not recommend Ross unless they have the the ability to provide hypereutectic pistons with Grafal-style iron coating. Mahle *highly* recommended.

 

How much would a custom set of Mahle's be though? They don't list Mercedes/Crossfire under their application guide, which leads me to believe its going to be a big money custom job? Any more info would be appreciated.

 

the suspension/brake/tire/wheel setup on our z06 costs more than your crossfire...
we make 650 crank hp, which makes it right around 540rwhp 520ft lbs.
we run down 911 turbos at road atlanta like they are civics.
i'd love to watch you eat your crow.
theres just no economical way to make big power with a mercedes.. sorry. mercedes lacks any performance aftermarket of any respectible size. its all about looks and style.


and when it comes down to the issues i've with my crossfire vs. the z06... it makes me want to drive my "german manufactured, yet fucked up by an american company" machine off a very large cliff.

and another thing, there isnt any motor that cannot be boosted.
10:1 is perfectly doable... i've built 1.8 liter 13.5:1 turbo honda motors that made 350 all day long and pump gas. I built a 9:1 2.1 liter that made 550whp on pump gas.

compression ratios ultimately limit the power ceiling, but you can still get decent power out of almost any motor.
please shut your mouth until you graduate high school and get educated

 

Infinite, dont be so bashful.... tell us how you really feel...