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01-27-2010, 04:22 PM
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#1 | |
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Registered User
2000 TJ Wrangler
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Horsepower gains
What in your opinion is the "easiest" and/or most cost effective way to gain hp in a 4.0 I6??
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01-27-2010, 04:24 PM
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#2 |
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Registered User
2000 TJ Wrangler
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Engine Swap
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01-27-2010, 04:24 PM
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#3 |
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Registered User
 
2004 LJ Wrangler
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use the search function. this is seriously covered 10 times a week in more ways than one. heck, just look at the links below in my sig.
 but to answer your question: 4.7L stroker
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Useful Write-Ups: SEARCH TUTORIAL TJ Tech BOOT CAMP-A Must Read! FAQ: Cold Air Intakes & K&N's Off-Road Tips and Techniques What is a CV shaft and why do I want one? So you want a Tummy Tuck? Tire size, lift height, bumpstops & shock guide DIY Shock Shifters for Long Travel Shocks Lug nuts and bolt patterns Catalytic Converters Busted TJ Track Bar Bolt Fix Brake Knuckle Divot/Groove Repair Coconut Oil for Drilling and Machining Fabrication & Build: My Build Thread Funny: Will it fit in my Jeep? |
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01-27-2010, 04:29 PM
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#4 |
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JEEP FREAK
 
1998 TJ Wrangler
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Easiest, cost effective, and gain horsepower cannot be used in the same sentence.
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98 TJ |
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01-27-2010, 04:29 PM
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#5 |
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TITS
 
2004 TJ Wrangler
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Stroker
SEARCH. |
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01-27-2010, 04:42 PM
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#6 | |
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Running Secretly Amok!
2002 TJ Wrangler
Join Date: May 2007
Location: Ventura ,CA., California
Posts: 9,276
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Quote:
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01-27-2010, 04:43 PM
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#7 |
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Registered User
2001 XJ Cherokee
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Light your jeep on fire and buy a ferrari. Easier, more horsepower, and will probably end up being cheaper
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01-27-2010, 04:46 PM
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#8 |
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Registered User
2000 TJ Wrangler
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...cold air intake
bahaha 
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4.0, 5sp, bfg33's, 3 1/2 lift |
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01-27-2010, 04:52 PM
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#9 |
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Registered User
2001 XJ Cherokee
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Technically, you could just take off the entire exhaust system and run open headers. That would increase HP (at like a million RPMs and at extreme loss of low-end torque), be cheap, and relatively easy... although you might unintentionally start my first suggestion. Who needs to paint flames on when you can have the real thing?
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01-27-2010, 07:18 PM
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#10 | |
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Web Wheeler
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fill out your complete profile, we are working with a 1999 tj only. give us some specs.
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Quote:
Want to STOP? JEEP Co-op parts, jk, tj, lj, yj, cj delrin door bushings, TRE inserts, poolball shifters, tierod flip kits My Goodyear tire experience |
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01-27-2010, 07:51 PM
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#11 |
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Registered User
1997 TJ Wrangler
Join Date: Jul 2009
Location: North Jersey/Bloomsburg PA
Posts: 544
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nothing cheap will really help you (throttle body spacer, cold air intake, cat back exhaust) if you have larger than stock tires you could regear. or an engine swap. or buy a different vehicle. those are pretty much your options
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01-27-2010, 08:20 PM
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#12 |
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Registered User
1997 TJ Wrangler
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Head and cam work or a stroker. That's it for the 4.0L
As for cost effective, even the head and cam work will cost more than it's worth since you may gain 25 hp at the crank max.
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1997 Jeep TJ 1983 Jeep CJ7 2011 JK Unlimited Rubicon |
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01-27-2010, 09:14 PM
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#13 |
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Registered User
1997 TJ Wrangler
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LOL. Like the other guys said. SEARCH. If you did that then you would have found the same answer that youll get here. The 4.0 is perfect and you cant do anything to improve its gas mileage or power. No bolt on is good enough for the Jeep 4.0.
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01-27-2010, 09:22 PM
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#14 |
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Registered User
1997 TJ Wrangler
Join Date: May 2009
Location: Staten Island, New York
Posts: 180
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Add Summit racing, K&N, Jegs, AEM, Pacesetter and Edelbrock stickers on your Jeep. You'll instantly gain 5HP a piece.
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9-11-01 NEVER FORGET NEVER FORGIVE If a pretty poster and a cute saying are all it takes to motivate you, you probably have a very easy job. The kind robots will be doing soon._██_ (ಠ_ృ) 97 TJ A/C Compressor for SALE! |
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01-27-2010, 09:25 PM
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#15 | |
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Registered User
1993 XJ Cherokee
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^^ HAHA! I got 9HP out of the Summit one...
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-Cory 1992 White Cherokee SOLD -4.5 Lift -35" Mickey's -Axle Swap -Custom bumpers 1993 Forest Green Cherokee Stock.. for now 4.0 bored over to a 4.2 Manual 4dr Quote:
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