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post #1 of 31 (permalink) Old 06-26-2012, 09:35 PM Thread Starter
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1998 Dodge Intrepid Base: Lets make it faster.

Hey all, I am the owner of a '98 dodge intrepid. It's the base model with the 2.7L
I'll go ahead and add that my cousin is a highly trained and certified chrysler/dodge/jeep mechanic. We are replacing the water pump/timing chain within the next few weeks just to make sure it doesnt break on me and ruin my ride. Now, My friend has a Honda Prelude which he swears up and down is a racecar. its pretty slow, but i want to make sure my car can dust him on the track. What are some of the first modifications you all did to make your 'trep faster? New intake? that would only give about 5 hp. Im looking for cheap horsepower. While we are taking the engine down a ways im going to fix my burning oil problem as best i can by replacing the valve seals on the exhaust side at least (ill probably do both exhaust and intake actually, just to be sure.) Does anyone know how well this works to fix that?

Long story short, how can I make my '98 2.7L intrepid faster? I have tons of options, but i dont know which path to take.
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post #2 of 31 (permalink) Old 06-26-2012, 09:38 PM
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Don't waste your money
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post #3 of 31 (permalink) Old 06-26-2012, 09:43 PM
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Don't waste your money
^^ X2, X3, X4 and so on! LOL!
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post #4 of 31 (permalink) Old 06-26-2012, 09:44 PM
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Quad turbo it!
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post #5 of 31 (permalink) Old 06-26-2012, 10:06 PM Thread Starter
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That's more or less the response I expected. Im actually saving my engineering internship salary to go towards a 1968 camaro project and put a 427 in it. I think that will be money better spent. haha! Either way, i am going to go through with the other things so i can keep driving the car through college. Hopefully it will last me that long. I just wont make it quicker for now. If i ever want to throw away some money on it just to spite my "friend" Ill hit you up again and say "how do i make this car fast? no spending restrictions..." Thanks. Still, if i were to waste my money, what would be the first thing to do? new exhaust and intake, then a new PCM?
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post #6 of 31 (permalink) Old 06-26-2012, 10:13 PM
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Find a 3.5HO and drop in. That'll give you about a 60HP boost right away.
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post #7 of 31 (permalink) Old 06-26-2012, 10:14 PM
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That's more or less the response I expected. Im actually saving my engineering internship salary to go towards a 1968 camaro project and put a 427 in it. I think that will be money better spent. haha! Either way, i am going to go through with the other things so i can keep driving the car through college. Hopefully it will last me that long. I just wont make it quicker for now. If i ever want to throw away some money on it just to spite my "friend" Ill hit you up again and say "how do i make this car fast? no spending restrictions..." Thanks. Still, if i were to waste my money, what would be the first thing to do? new exhaust and intake, then a new PCM?
A different car would be my first choice!
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post #8 of 31 (permalink) Old 06-26-2012, 10:16 PM Thread Starter
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BMW 325i. That's my next daily driver car choice. I like the e36 ones, from years 1992 to 1999 or something like that. those dates are probably off. Those can be made to go very fast.
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post #9 of 31 (permalink) Old 06-26-2012, 10:17 PM
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Good luck with your choices....signing out!
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post #10 of 31 (permalink) Old 06-26-2012, 10:29 PM
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seriously. Exhaust gets you not much at all... intake maybe 5 HP at WOT... its too old for a special PCM so no help there. Just take care of it for your DD, and put your money into your "race car" Don't worry about the Honda, at the end of the day he's still a nozzle driving a Poolude. Right Will?

There's no such thing as cheap horsepower. You want real gains, you pay real money.
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post #11 of 31 (permalink) Old 06-26-2012, 10:31 PM
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I paid $20k for the 450hp in my SRT-8! LOL!


But it came with a complete loaded car!
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post #12 of 31 (permalink) Old 06-26-2012, 10:32 PM
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good man getting the pump and chain done incidentally, take care of that 2.7, and she'll be a cheap date for a long time.
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post #13 of 31 (permalink) Old 06-26-2012, 10:44 PM
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post #14 of 31 (permalink) Old 06-26-2012, 10:48 PM
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...While we are taking the engine down a ways im going to fix my burning oil problem as best i can by replacing the valve seals on the exhaust side at least (ill probably do both exhaust and intake actually, just to be sure.) Does anyone know how well this works to fix that?...
Replacing the valve stem seals absolutely stopped oil usage on my 2.7. There is now zero detectable drop in level on the dipstick between oil changes at 250k miles (did the chain, tensioner, oil pump and seals at 207k miles) and no smokey exhaust. Before doing the stem seals, it was going thru a *lot* of oil - it varied, but I'd say 2 to 3 quarts (3500 mile OCI). Replace them all while you're in there.

The other key to low oil usage is keeping the PCV system in tip top shape (hoses open and not hard/brittle/cracked or gooey, use aftermarket PCV valve). Replace front crank seal and timing cover gasket when you do the chain, etc.


'98 LXi - Later Concorde gages (black w/ chrome rings)/'99 LX - LHS gages (white) - HIR bulbs
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post #15 of 31 (permalink) Old 06-27-2012, 07:28 PM
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I did the whole intake and exhaust swap thing. Its not plug and play. I put a Charger/Magnum intake on for low end and the Charger/Magnum exhaust manifolds. I think the exhaust manifolds have the biggest gain. Its a bit of custom work. I still only think it could only net around 15hp. It was a lot of extra work. And for a DD, I won't do it again.

If you want to add longevity, add a cheap oil catch can to your PCV set up to keep oil out of the intake. An oil cooler would help, too. I'd say both of those could be done for around $100 or less. I built a catch can for about $25-30(including fittings) and put a large oil cooler and remote filter kit on for another $80. The cooler on mine added 1.5 quarts to my oil which will just further help resist break down of oil.
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