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Author Topic: Jeep XJ - Turbo Diesel  (Read 26958 times)

Reply #15August 05, 2013, 10:09:15 pm

Reply #16August 05, 2013, 10:14:23 pm

theman53

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Re: Jeep XJ - Turbo Diesel
« Reply #16 on: August 05, 2013, 10:14:23 pm »

Reply #17August 07, 2013, 01:09:58 am

AdrianD

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Re: Jeep XJ - Turbo Diesel
« Reply #17 on: August 07, 2013, 01:09:58 am »
8v-of-fury, how well does the AWIC work? Is yours from frozenboost as well?

I could fit this core: http://www.frozenboost.com/product_info.php?cPath=218&products_id=216&osCsid=1920fdf0e83047999f100b369f2d7978 or even have it modified and attached to the manifold.

The other option, with a 27x 5.5 x 2.5 IC would probably work in the stock location, with some cuts done to the front crossmember. Or I could get a custom core built up, like I did with the oil cooler and like I'm going to do with the water radiator.
« Last Edit: August 07, 2013, 04:31:21 am by AdrianD »

Reply #18August 08, 2013, 10:09:51 pm

8v-of-fury

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Re: Jeep XJ - Turbo Diesel
« Reply #18 on: August 08, 2013, 10:09:51 pm »
I actually do not have the AWIC as of yet.. But I have heard nothing bad from anyone using their stuff, and I have promoted it to at least 50 people lol. I would like you to read their site a bit, it is absolutely the better route. You have a bigger vehicle and a smaller displacement engine.. why not cool it as best you can?

http://www.frozenboost.com/stpg.php?page_id=water_to_air

I am planning on ordering a FrozenBoost unit soon though.
« Last Edit: August 08, 2013, 10:23:27 pm by 8v-of-fury »

Reply #19August 09, 2013, 01:22:11 am

AdrianD

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Re: Jeep XJ - Turbo Diesel
« Reply #19 on: August 09, 2013, 01:22:11 am »
I know that it's found on many performance vehicles, $150 for the intercooler is not much.

These guys have a lot of data on A/W setups:
http://www.are.com.au/Inter/air_to_water.htm

Even going logically, flow through such a core is extremely good. And it would be a big benefit to integrate it in the intake manifold by removing the necking down to 2.5" at the output. For me it would have to be removable from the manifold.

I hate you for bringing up A/W just when I almost made my mind up to go A/A  :P
« Last Edit: August 09, 2013, 01:27:25 am by AdrianD »

Reply #20August 09, 2013, 02:54:28 am

745 turbogreasel

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Re: Jeep XJ - Turbo Diesel
« Reply #20 on: August 09, 2013, 02:54:28 am »
The China Xtreme are surprisingly good for how cheap they are.  Those poor kids sure can lay a nice bead of weld.

Reply #21October 18, 2013, 11:59:34 am

vanbcguy

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Re: Jeep XJ - Turbo Diesel
« Reply #21 on: October 18, 2013, 11:59:34 am »
I've been very happy with the AWIC in Jezebel.  It's pretty much the only part that will be coming over to my new TDI... :D

I've never had any issues with heat soak (I do have a pretty massive AWIC radiator though).  Over time the silicon couplers on the "hot" side of the IC have changed color while the ones on the "cold" side look exactly the same as they did when new.  I think the color change comes from them being heated up regularly.  My K24 at full boost would be putting out air at over 100C.
Bryn

1994 Jetta - AHU M-TDI - Jezebel Jetta
2004 Jetta Wagon - 1.8T - Blitzen

Reply #22June 19, 2014, 07:13:53 am

AdrianD

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Re: Jeep XJ - Turbo Diesel
« Reply #22 on: June 19, 2014, 07:13:53 am »
Bumping my old topic  ;D
Sadly with a problem: lately it has been starting like complete crap when warn, somethings even running un-even and shaking. I always had to crank a bit more when warm but in the last couple of months it has deteriorated a lot.
What do you guys think it can be? Injection pump head worn out?

Reply #23September 01, 2014, 02:06:44 am

AdrianD

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Re: Jeep XJ - Turbo Diesel
« Reply #23 on: September 01, 2014, 02:06:44 am »
Well, I'm back :)

Uneven start - must have been something with the injector return lines. I took out all the injectors to have them checked, found zero problems but upon reinstallation the bad start was fixed.

New problems after a 1200 mile trip:
Turbo went south (blue smoke out the exhaust, crunching noises from the turbo) and before the turbo went it ran lumpy at idle and was shaky until 1500 rpm. Power was good until the turbo failed.
The lumpy idle and shakiness will have to wait until I change the turbo.

Why did the turbo fail? Old turbo? Overheated oil?

After 600 miles, when I got to the destination I could notice a turbo whistle above 10 psi.
On the entire trip back home I had to make one mountain pass (car fully loaded) but I kept it at 2000rpm in 4th, EGT at 900F, oil temperature slowly went up to 200F after the cooler. After this ordeal, traffic jam. I kept a high idle (1200rpm) to have good flow through everything and never shut off the engine. After about another 200 miles the lumpy idle started but I did not notice any power problems. This lumpy idle got worse, with blue smoke coming out of the exhaust, until I started hearing strange sounds from the turbo and then no boost and no power. I know, I should have stopped when the problems started but it started to smoke at idle on this road, with no way of towing it back home from there:

http://romaniatraveldestinations.com/the-transalpina-road-in-romania/

Now another problem arises. I've been wanting to do a VNT (1756vk) but I've also thought about a newer fixed geometry turbo (Holset or a Garrett). The stock turbo is an IHI RHB5, after I remove it I will post compressor/turbine measurements, maybe you guys can help me pick a replacement :)
Do I VNT it or not? Based on the calculators on Garrett's website, the GT2056s (fixed geometry) is a good choice for my car as far as the compressor side goes. It's been used on commercial 2.8 liter and 3.0 liter engines.
The GTB1756vk has the same size compressor wheel, larger turbine inducer and same size exducer and it's been used on the 2.8 CRD Jeeps. So I would assume it's not going to choke my 2.5
« Last Edit: September 01, 2014, 06:58:14 am by AdrianD »

Reply #24February 15, 2019, 12:52:29 am

bluehues84

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Re: Jeep XJ - Turbo Diesel
« Reply #24 on: February 15, 2019, 12:52:29 am »
Any update on your Jeep?