Adding Intercooler to a 19J Turbo - Defender Source
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  #1  
Old March 18th, 2016, 10:32 PM
Raquen
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Adding Intercooler to a 19J Turbo

Has anyone added a water to air intercooler to a 19J?

I read that allard Intercoolers use to sell a kit with really good results. From what I read it made the 19J comparable to the 200TDI.

I have a 1988 D110 with a 19J Diesel Turbo.

I am looking into installing a water to air system and adjusting the boost on the turbo and balancing it with an adjustment to the fuel pump.

Has anyone done anything like this?

Thanks!
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  #2  
Old March 19th, 2016, 08:50 AM
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Why not use a air to air? Just use a 200tdi intercooler. The intake manifold can be machined to have a hole on the front (just like a 200tdi). Done that on my 19J . Don't expect much hp outta 19J even in intercooled mode. Just saves the engine life a bit as the 3-4 cylinder tends to get hot.
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  #3  
Old March 19th, 2016, 12:56 PM
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I put one on my 19J. It was an after market with 2" plumbing. I had to do a modification to my slam panel supports to allow it to be mounted in front of the radiator. Having installed it when the engine was rebuilt I have nothing to compare performance too. I have no problem running freeway speeds but I never push it too hard. My egt gauge reads at it highest between 900 and 1000 degrees. But as soon as fifth gear and cruising speed is reached it drops between 650 an 700. The engine temp never runs above 175 even on a 100 degree day. I did put a cut down Rangy fan in it throws a lot of air across the engine. I think the 200 tdi would be the way to go if your not into fabrication.
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Old March 21st, 2016, 10:36 AM
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I may be able to put together an intercooler kit for you
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  #5  
Old March 21st, 2016, 10:41 AM
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Why water to air?

Are you drag racing your truck?
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  #6  
Old March 21st, 2016, 11:12 AM
Raquen
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Did either of you increase the turbo pressure and dial up the fuel pump? We haven't put the turbo on a gauge, we're guessing stock is only 4-6 lbs with an intercooler you can increase the pressure to 18lbs. I am probably looking at 12-14 to be safe.

As for air to water. The first is no space for the air hoses on my model and it would be serious spaghetti mess. Second and the main reason I can get below ambient air temp and greater air density. Plus less hoses, less loss and way easier mounting options.

And no drag, just need extra hp to get up the sierras and it seems an easier and cheaper option the know sourcing as 200TDi
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Old March 21st, 2016, 11:24 AM
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I dont think you really understand how turbos and intercoolers work

Even if you have a theoretically perfect intercooler, your turbo will have an extremely short life at 1.2 bar. My recommendation is to replace the turbo with a unit with a larger compressor, like a GT28RS, GT2056, GT2560, etc. You need something that can push 19lb/min at the middle of the efficiency island. You'd be going from 40% or less efficiency and ~180,000 rpm to 73% efficiency and ~130,000 rpm. you could probably forego running a complex intercooler and replace it with a smaller one.

Some folks on here have been fueling up and boosting their engines. They could probably provide more insight into their experiences.
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  #8  
Old March 21st, 2016, 01:41 PM
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On my 19J I am running a large Allsport full size intercooler...the stock wastegate opens at about 9lbs...you don't want to go too much higher due to this engine not being the strongest design...the biggest improvement was replacing the boost diaphragm which prob has a small hole that then ended up having a big tare...with that replaced the engine became much stronger...you could run a manual boost valve to get it up to about 13lbs, but I didn't see too much of a difference and didn't want to kill the motor...My EGT also runs around 650F around town and at highways speeds about 950F at the highest...
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  #9  
Old March 21st, 2016, 03:09 PM
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Hey cool thanks for the info, we weren't sure about the compressor and if it needed to be upgraded but we suspected it would. I know the TDi swap is a common one but I'm just trying to see if I can get something comparable with out the big conversion.
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  #10  
Old March 21st, 2016, 03:45 PM
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As far as I know, the power from the 200tdi comes from the injection system, the boost and fuel can help but the lower ends up being limited by the engine design. Also bigger turbos spool up at higher rpm which means less low end power..
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Old April 16th, 2016, 12:44 PM
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Quote:
Originally Posted by icnsltmfg View Post
On my 19J I am running a large Allsport full size intercooler...the stock wastegate opens at about 9lbs...you don't want to go too much higher due to this engine not being the strongest design...the biggest improvement was replacing the boost diaphragm which prob has a small hole that then ended up having a big tare...with that replaced the engine became much stronger...you could run a manual boost valve to get it up to about 13lbs, but I didn't see too much of a difference and didn't want to kill the motor...My EGT also runs around 650F around town and at highways speeds about 950F at the highest...


Are you talking about the boost diaphragm in the injector pump or the diaphragm in the waste gate actuator?
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Old April 16th, 2016, 01:14 PM
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Quote:
Originally Posted by PabloCocito View Post
As far as I know, the power from the 200tdi comes from the injection system, the boost and fuel can help but the lower ends up being limited by the engine design. Also bigger turbos spool up at higher rpm which means less low end power..
No, most of the power is from the boost. 15 psi nearly doubles the amount of air entering the engine. As long as you provide enough fuel for the air, the power follows.
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  #13  
Old April 16th, 2016, 04:57 PM
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The boost diaphragm inside the injector pump...they tear and you loose much of the power plus it will allow fuel to reach the turbo...

Quote:
Originally Posted by Raquen View Post
Are you talking about the boost diaphragm in the injector pump or the diaphragm in the waste gate actuator?
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  #14  
Old April 18th, 2016, 02:50 PM
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Quote:
Originally Posted by icnsltmfg View Post
The boost diaphragm inside the injector pump...they tear and you loose much of the power plus it will allow fuel to reach the turbo...


I chatted with a parts house and they were telling me the stock injector pump for a 1988 110 with a 19j doesn't have a boost diaphragm and they thought it was only applicable if someone updated with new 3rd part pump.

Is this the case? Were people referring to TDi's or did this guy just not know what he's talking about.
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  #15  
Old April 18th, 2016, 03:01 PM
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7243-006 which may be superseded by 7182-643, but check
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  #16  
Old April 18th, 2016, 03:03 PM
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It is on the pump next to the block.

Replacing 2.5TD boost Diaphram - Land Rover Technical Archive - LR4x4 - The Land Rover Forum
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  #17  
Old April 18th, 2016, 03:36 PM
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Mine was even worse looking then the one in the write up..
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Old April 18th, 2016, 03:44 PM
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read my previous post...

http://www.defendersource.com/forum/...tml#post731788
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