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Unread 01-19-2010, 08:33 PM   #1
toycarrier
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Taking the CRD to 300+ and 500+ ft

What would be needed to take a Jeep Grand Cherokee CRD to some bigger numbers?

The Inmotion stage 2 is a great start but is there anything out there for some bigger numbers?

I'm just surprised there isn't a bigger aftermarket for this engine like there are for the ford/chevy/cummins markets (i'm sure the amount on the road is a big reason). It seems like a great platform for some big numbers.


Jeff

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Unread 01-20-2010, 06:36 AM   #2
Swayse
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If Inmotion doesn't add fuel pressure, you could stack a MP8 on top of it for your fuel pressure. Anybody tried this?
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Unread 01-20-2010, 07:54 AM   #3
justa4banger
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i've talked to JAmes about this and he claims you can get 300+ and near 500 trq, but the tranny and converter will need serious upgrading. if you have 4wd the transfercase would need some work and he claims fuel economy dives harshly.

he is also reluctant to do it from what i gather.. if you get some time or he posts up... ask him about his Touareg.. its like 600+hp and 1000+ft lbs... of course that sucker is a V10 TDI
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Unread 01-20-2010, 08:41 AM   #4
Jscheier
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I'm guessing it could be done relatively easily... but as mentioned, the transmission would then be the weak(er) link in the equation.

247hp and 443tq aren't that far off (InMotion results).
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Unread 01-20-2010, 10:11 AM   #5
no-blue-screen
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Anyone know what the diffs, transfer case, and tranny are rated to handle? This is the primary reason why i haven't chipped mine is because I am concerned about increased strain on the drive components.
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Unread 01-20-2010, 02:04 PM   #6
CRD Dawg
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Quote:
Originally Posted by no-blue-screen View Post
Anyone know what the diffs, transfer case, and tranny are rated to handle? This is the primary reason why i haven't chipped mine is because I am concerned about increased strain on the drive components.
X2!!! I'm also still in the dark about possible negative effects to the DPF as a result of EGR reduction. I know it's good for the engine/intake/etc., but it's got to more quickly plug up the DPF.
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Unread 01-25-2010, 07:01 AM   #7
justa4banger
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Quote:
Originally Posted by no-blue-screen View Post
Anyone know what the diffs, transfer case, and tranny are rated to handle? This is the primary reason why i haven't chipped mine is because I am concerned about increased strain on the drive components.
OH come one man............ thats a pretty lame excuse for not tuning your truck......
Besides unless you doing drag strip launches or 4x4 burnouts.. the added ooomph won't bother the tranny or transfer case...you do have control over the accelerator

Tranny is rated for somewhere right at 450ftlbs... (readings from SRT8 forums) so with me making 425 wheel trq... i'm right there.. Now i do know the 2wd have the larger SRT8 rear end, and the 4x4's have a smaller rear but also have all 4 wheels driven...

Like i said theres NO excuses from anyone... not to get this tune.. hell the fuel economy boost alone has damn near paid for half the tune already... even with winter blend Diesel.. i'm still getting 24 mpg mix city/hwy driving..Consistantly.

Trust me once you get the tune.. you'll wonder why the hell you waited so long..

DPF and egr???? .. Less egr recirculation means less junk in the intake..., ok a smidge more soot enters the dpf as opposed to the intake VIA egr valve... do you think that small added amount will really affect anything?

I honestly believe the biggest issue with dpf's/egr is people who baby there rides or don't get a couple regens done at hwy speed... you need to load the engine to get those temps up.. my buddy has a 07 dodge ram.. (8) egr/dpf related issues... in 2 years/8k miles..... yes he barely drives it... First time he took a long road trip for 3k miles... and then actually drove the truck for 5k miles more using the trq available... the truck stop having issues with both those systems... but who know they may return since he's back to his old ways..
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Unread 01-27-2010, 04:31 AM   #8
Hangloose
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Quote:
Originally Posted by toycarrier View Post
What would be needed to take a Jeep Grand Cherokee CRD to some bigger numbers?

The Inmotion stage 2 is a great start but is there anything out there for some bigger numbers?

I'm just surprised there isn't a bigger aftermarket for this engine like there are for the ford/chevy/cummins markets (i'm sure the amount on the road is a big reason). It seems like a great platform for some big numbers.


Jeff
Avoid taking it above 246 HP as that is beyond the factory dyno tested parameters of this engine and gearbox.....

This 3.0 L V6 Mercedes Diesel is designed and produced in Berlin, Germany and was already at a high stress level with the standard output compared to the better Stuttgart engines.

Its a great engine but needs propper bedding in, good quality oil and frequent changes, + turbo cool down time in higher ambient temperatures. Let it warm up before using more than 50% power. The first 10 minutes from start up are critical especially in cold weather. Follow this and it will last a long time after a power hike......
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Unread 01-27-2010, 09:23 AM   #9
kreso
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How wrong. The same engine is used in ML and it have 250 HP and 500+ tq and all of that right out of factory.
Driving: Start it, scrub the ice, go. Off course not with WOT. That will kill any cold engine.
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Unread 01-27-2010, 07:41 PM   #10
Hangloose
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Originally Posted by kreso View Post
How wrong. The same engine is used in ML and it have 250 HP and 500+ tq and all of that right out of factory.
Driving: Start it, scrub the ice, go. Off course not with WOT. That will kill any cold engine.
The ML has two 3.0L variants;

1] 300 Cdi Blue Efficiency
2] 350 Cdi. Blue Efficiency
3] 350 Cdi

The original 3.0L had 510 NM of torque as standard and this applies to 2005 and on CRD Jeep GC's.

The new MB 350 Cdi is the old engine with a very mild increase in power output. For 2010 it is rated at 224 HP and the 300 Cdi is 190 HP.

The highest power rating without blue efficiency is 230 HP.

I am not sure where you got your 250 Hp from.........

The MB ML always had a different air intake from the WK / WH hence the small power differential.

The official upgrade was a Startech by Brabus chip which increased power to 258 HP but that mapping had fail-safe's including rev limiting to 3000 rpm with the engine cold and power lowering at high temperatures.

Most basic mappings only give a power hike with no consideration / protection to engine life.

I am sure you can squeeze 300 HP out of this engine and damage it but why do it when a 5.7 hemi will give you more performance for the same money if that is what you want. Due to the gearing and rpm engine range you will only reduce the 0-60 by 0.5 seconds and increase the top speed by around 4 mph. Top speed tends to be irrelevant due to speed limits and ATR tyre speed rating limitations.

I have driven an upgraded CRD and barely noticed any difference.

I bet you that a stock CRD engine that has been run in properly and looked after will give you the same perfomance as a chipped engine that has been thrashed and badly run in, if not better.

The CRD can haul 3.5 T, it can do up to 31Mpg Avg and will perform on par with a 4.7 V8 gasser. Its great off road and has enough torque to put a lot of V8's to shame. If you want performance look at the 5.7 Hemi or SRT8.
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Unread 01-28-2010, 06:36 AM   #11
Swayse
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I'm not sure how the 3.0 CRD is with a tuned program, ours is still stock. I've been thinking about a tune, but I'm still on the fence. I run a tune in my Dodge Cummins, right now I'm tuned at 130hp over stock at the rear wheels. I gained 2 to 3 mpg, real mpg, not from the lie-o-meter. The Cummins runs cooler EGT than it did stock, under full power. Raising the boost and timing did wonders for the cummins. If tuning is done right, it is flat out awesome.
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Unread 01-28-2010, 09:31 AM   #12
toycarrier
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Exactly Swayse. I'm sure INmotion tuning is more than capable of making a safe high hp tune as well. There stage 2 seems good enough for me though. A 14 seconds suv that can pull houses down and get 25+mpg on the highway. Sounds good to me.
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Unread 01-29-2010, 09:58 AM   #13
justa4banger
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Quote:
Originally Posted by Hangloose View Post

I have driven an upgraded CRD and barely noticed any difference.



I dunno what kind of upgraded POS you were driving, but let me tell you right now.. the inmotion tune defintely made the butt O meter register the extra power.

60+whp and 70+wtrq is noticable, and dropping 1 full second off the 1/4 mile says something...

So believe what ever bullshi# you want to... this tune makes a difference.

Again why wait? once you tune the CRD you will seriously ask yourself why you wanited.. I have gotten atleast 2mpg increase, plus my truck is faster.4x4 might not show quite same gains, but you will still feel it
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Unread 01-29-2010, 10:00 AM   #14
justa4banger
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Quote:
Originally Posted by Hangloose View Post
Avoid taking it above 246 HP as that is beyond the factory dyno tested parameters of this engine and gearbox.....

This 3.0 L V6 Mercedes Diesel is designed and produced in Berlin, Germany and was already at a high stress level with the standard output compared to the better Stuttgart engines.

Its a great engine but needs propper bedding in, good quality oil and frequent changes, + turbo cool down time in higher ambient temperatures. Let it warm up before using more than 50% power. The first 10 minutes from start up are critical especially in cold weather. Follow this and it will last a long time after a power hike......
This is garbage also.. my turbo looses no boost, so its not quite out of steam yet and i'm dynoing 260+WHEEL HP..

I suggest you start showing some certificates of actually knowing something rather than pulling something out of your bum.
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Unread 01-29-2010, 11:30 AM   #15
suzieque
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Quote:
Originally Posted by Hangloose View Post
This 3.0 L V6 Mercedes Diesel is designed and produced in Berlin, Germany and was already at a high stress level with the standard output compared to the better Stuttgart engines.
I thought the North American 3.0L CRD 2007-2008 engines were from Stuttgart too, but I could be wrong.
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Last edited by suzieque; 01-30-2010 at 03:13 PM..
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