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post #1 of 18 (permalink) Old 09-30-2007, 02:52 PM Thread Starter
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2.7 PCV system

Hello to all. Does any one know when Chrysler started using the heat exchanger in the PCV line as shown in the "Is your 2.7 burning oil" sticky on page 4, post # 56? I have a 98 and a 03 and neither one has it. Wondering if this is part of the sludge fix. There is an upgrade for the windage tray and oil pickup tube but I don't know if it has any thing to do with the sludge fix. Both of my 2.7's have had not one problem but I would like to keep it that way. It would be nice if there was a list of upgrades but it seems to be a nuclear secret. I have a lifetime friend who is a parts manager at a Dodge dealer and all he can pry out of anyone is that it was a crankcase ventilation problem. Is that what the fix was for all the toyota and vw's? I'm sure we would all like to know.

Last edited by casey; 09-30-2007 at 03:01 PM.
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post #2 of 18 (permalink) Old 09-30-2007, 03:00 PM
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Somewhere around 2001. My old 2001 SE had a build date of August 2000 and had one. To best of my knowledge, the, 98 and '99 didn't have them and the 2000 I am unsure of. Even if you don't have one, it can be retrofitted relatively easy.
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post #3 of 18 (permalink) Old 09-30-2007, 03:09 PM Thread Starter
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I should have stated the 03 is a Sebring. It does not have a exchanger either. Of course the engine is transverse mounted but that should'nt be a factor although there is some sort of valve[?] on the power brake vacuum line that is tied to the fresh air vent line to the rear valve cover. I looked in the Chrysler shop manual and it didn't show it.
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post #4 of 18 (permalink) Old 09-30-2007, 08:59 PM
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got a 99 trep 2.7 with a coolant line running right through a bottle for the pcv
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post #5 of 18 (permalink) Old 09-30-2007, 11:11 PM Thread Starter
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Any chance your cars were for northern climates? Canada? I'm in New Jersey.
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post #6 of 18 (permalink) Old 09-30-2007, 11:15 PM
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I belive the heat exchanger on the 2.7 was a intrepid only thing, my 2000 with a build date of 11-99 had one, as far as the transverse mounted 2.7's ive never seen one on them,
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post #7 of 18 (permalink) Old 09-30-2007, 11:53 PM
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I have one and mine was built 4/00.
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post #8 of 18 (permalink) Old 10-01-2007, 04:18 PM
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My 2000 Intrepid has it. On my mom's 2002 Sebring w/ the 2.7l the PCV line is just rubber that is wrapped in foam. Also, there is no line going from the coolant tank to the PCV valve.
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post #9 of 18 (permalink) Old 10-01-2007, 04:56 PM
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What I find odd is what difference would it make if its longitudinally mounted like in the LH's or transverse like in the Sebring/Stratus? Unless they made the sludge corrections to the transverse block so it didn't need the heat exchanger?
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post #10 of 18 (permalink) Old 10-01-2007, 07:51 PM Thread Starter
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I really want to know what changes were made to fix the problem. My 98 Trep has been great. Had the valve covers off last year and there was no sludge. I do have the exhaust valve seal issue now at 91,000 miles. I'm going to fix it soon and I want to replace the chains, guides, tensioner, water pump, oil pump and what ever else I can think of. The new windage tray and oil pick up tube is on the list also. If we can find out all the changes that were made through the years we could incorporate them into our repairs. Its a shame they stopped making them. I would buy another.
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post #11 of 18 (permalink) Old 10-01-2007, 10:31 PM
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Quote:
Originally Posted by casey
I really want to know what changes were made to fix the problem. My 98 Trep has been great. Had the valve covers off last year and there was no sludge. I do have the exhaust valve seal issue now at 91,000 miles. I'm going to fix it soon and I want to replace the chains, guides, tensioner, water pump, oil pump and what ever else I can think of. The new windage tray and oil pick up tube is on the list also. If we can find out all the changes that were made through the years we could incorporate them into our repairs. Its a shame they stopped making them. I would buy another.
I think that they have a new oil pan that holds 1 more quart which is supposed to slow sludge formation. BTW they are still making 2.7l's. They are the base engines in the LX cars. In the LX cars the 2.7l was detuned by
10-15 horsepower.
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post #12 of 18 (permalink) Old 10-02-2007, 09:07 AM Thread Starter
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Your right, they are making 2.7's. What I meant was I wish they still made the Intrepid. That car gets around 31-32 mpg on the interstate and my Sebring has gotten 34. You can't ask for more from a car that is big enough to hide a ricer in the trunk.
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post #13 of 18 (permalink) Old 10-03-2007, 12:34 PM
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Quote:
Originally Posted by MegaTrep
I think that they have a new oil pan that holds 1 more quart which is supposed to slow sludge formation. BTW they are still making 2.7l's. They are the base engines in the LX cars. In the LX cars the 2.7l was detuned by
10-15 horsepower
.
I could be wrong, but I believe they sacrificed horsepower but increased torque or maybe they tuned the torque band better for everyday driving in those heavier models. "Detuned" doesn't quite sum up it up.

Just to make sure I wasn't talking out of my @ss, this is from Allpar.
Chrysler 2.7 and 3.2 liter V6 engine specifications
In 2004, the 2.7 liter engine was modified for the LX series to produce more low-speed torque at launch and during mid-range operation for strong performance in everyday driving. The engine produces 190 hp at 6400 rpm, and 190 lb.-ft. of torque at 4000 rpm, and it offers good fuel economy for a vehicle of its size. This was done by using a new active dual-plenum intake manifold that is tuned for improved low-speed torque. In addition, the manifold includes a manifold tuning valve that further adds to low-speed torque during both part-throttle and wide-open throttle operation. This valve increases part-throttle torque by eight-10 percent in the primary driving range of 2100 to 3400 rpm, giving better performance in normal driving.
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post #14 of 18 (permalink) Old 10-03-2007, 01:34 PM
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If anyone cares, I think the new 2.7's are also flex fuel (capable of running up to E85).
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post #15 of 18 (permalink) Old 10-05-2007, 04:21 PM
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Quote:
Originally Posted by Mad Monkey View Post
I could be wrong, but I believe they sacrificed horsepower but increased torque or maybe they tuned the torque band better for everyday driving in those heavier models. "Detuned" doesn't quite sum up it up.

Just to make sure I wasn't talking out of my @ss, this is from Allpar.
Chrysler 2.7 and 3.2 liter V6 engine specifications
In 2004, the 2.7 liter engine was modified for the LX series to produce more low-speed torque at launch and during mid-range operation for strong performance in everyday driving. The engine produces 190 hp at 6400 rpm, and 190 lb.-ft. of torque at 4000 rpm, and it offers good fuel economy for a vehicle of its size. This was done by using a new active dual-plenum intake manifold that is tuned for improved low-speed torque. In addition, the manifold includes a manifold tuning valve that further adds to low-speed torque during both part-throttle and wide-open throttle operation. This valve increases part-throttle torque by eight-10 percent in the primary driving range of 2100 to 3400 rpm, giving better performance in normal driving.
Sorry, you're right that it was not "detuned" per se. Just tuned differently.
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