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Old 11-21-2007, 09:07 PM   #1
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4 cylinder question

yea i have a 97 wrangler with a 4 banger in it. im wanting to do a couple things to give it a little more power... ive heard and read on here that the 6 cylinder throttle bodys fit on these...is there any specific model that it has to come off of? i seen one that said it was off a cherokee but said it would fit a 6 cyl. wrangler...so does this fit the 4 cylinder?

im also wanting to get like a pace setter header or something more aggresive because mine is leaking and i have to replace it anyway...any suggestions on what brand?

also plan on getting snorkel and new exhaust...any input would help......thanks

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Old 11-22-2007, 12:37 AM   #2
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The TB off of any 4.0 will work. You will only gain power on the top end, ie...freeway with a WOT and then it's not much. I notice on one hill near my house I do not have to downshift as soon as I did before this mod. Not a great mod but for the price and ease of install, it does help.

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Old 11-22-2007, 11:23 AM   #3
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thanks...well i know the 4 cyl. is weak so im trying to help it out anyway i can... so the header and exhaust and throttle body might work well together and give it a little extra juice
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Old 11-22-2007, 11:34 AM   #4
coilovers are damn flexy
 
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Every bit will help, but as Mr.C once said, there is no replacement for displacement.
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Old 11-22-2007, 11:44 AM   #5
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Old 11-22-2007, 12:13 PM   #6
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Quote:
Originally Posted by bluvikng View Post
Every bit will help, but as Mr.C once said, there is no replacement for displacement.
i hate when people say that.. its called boost...
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Old 11-22-2007, 12:17 PM   #7
coilovers are damn flexy
 
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i hate when people say that.. its called boost...
You going to steal it, or turbo charge it?
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Old 11-22-2007, 01:09 PM   #8
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Originally Posted by bluvikng View Post
You going to steal it, or turbo charge it?
boost works just like displacement. I'd say even better. Thats why you see the little imports with 2L engines pushing over 500hp. (thats twice the power my 4.0L engine has..)
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Old 11-22-2007, 03:59 PM   #9
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They may be putting out twice the horsepower with the boost and higher compression, but they sure aren't running 87 octane to achieve that power! If you want more power one option is to have your head milled down to decrease the size of your combustion chamber but that will necessitate running higher octane fuel, which of course costs more and if you mill too far then you will get stuck running race fuel or octane booster in every tank. You can also try to find a more aggressive cam if they are made for your engine.
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Old 11-23-2007, 12:41 AM   #10
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I rather be running 93 octane w/ 500 hp turbo and 18-20mpg (if driven nicely) than 200hp 87 and 13-15mpg.. thats just me though...
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Old 11-23-2007, 04:15 AM   #11
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It must be a lot easier to find 93 octane in Chicago! Premium fuel here is only 91 octane. If you want anything higher you have to go to the specialty stations that sell the race fuels and those are very very very few and far between! It would be great if the higher octane fuels were more readily available as I will be lucky to be able to run 91 octane on the 289 I'm currently building to go in my '66 Mustang and even then I would be even more lucky to get 10mpg with it! Haha!
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Old 11-23-2007, 01:07 PM   #12
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the replacement for displacement? rotary.
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Old 11-23-2007, 03:27 PM   #13
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ok enough umm chat over 8 vs 4 cyl.

any more input on the mods i am planning on doing?

reccomend a header?

custom exhaust with like a flowmaster muffler?
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Old 11-23-2007, 07:58 PM   #14
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I just put a Flowmaster on my 4cyl, and its actually a huge dif! Much better acceleration, I have yet to try it on the freeway to test my top speed.(also my Cold air intake is a big help)
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Old 11-23-2007, 08:27 PM   #15
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its a costly list, but it may help a bit.

cold air intake
full exhaust including high flow cat.
throttle body swap, be sure to bore the intake manifold so you get your flow.
throttle body spacer
decent spark plugs, wires, cap rotor, fuel filter.

all in a combo would help you get as much air in and out of your 4 cylinder. without major mods there isn't much you can do.
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Old 11-23-2007, 11:59 PM   #16
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honestly you will get the most bang for the buck going big w/ boost. If you do the math the cheapest dollars per hp ratio ends up being when you go big.
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Old 11-24-2007, 04:26 AM   #17
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Header = $350.00
Hi flow cat = 100.00
Cat back exhaust = 150.00 (from exhaust shop)
Cold air intake = 200.00
Throttle body spacer = 75.00
New gears = 1000.00

Still wishing you had the 4.0 priceless!
trade it in.
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Old 11-24-2007, 12:44 PM   #18
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Prices the ebay way.
Header = $120 (next year)
Hi-flow cat = $20 (Later on)
Cat back exhaust = $100 (Have it)
Cold Air Intake = $40 (Have it)
Throttle Body Spacer = $20 (Didn't make a dif)
New Gears = $300 (Christmas)

Squeezing every last bit of power out of a 4 Banger = Priceless

These are all actual prices I paid, or that I am going to pay
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Old 11-24-2007, 12:50 PM   #19
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Get the gears first for the biggest and power gain.
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Old 11-24-2007, 01:47 PM   #20
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Get the gears first for the biggest and power gain.
+1!

This should be first on your list for power gains.
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Old 11-24-2007, 08:18 PM   #21
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the replacement for displacement? rotary.
that would be intresting...anyone ever thought of doing this???
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Old 11-24-2007, 09:36 PM   #22
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Originally Posted by tobycat1 View Post
Prices the ebay way.
Header = $120 (next year)
Hi-flow cat = $20 (Later on)
Cat back exhaust = $100 (Have it)
Cold Air Intake = $40 (Have it)
Throttle Body Spacer = $20 (Didn't make a dif)
New Gears = $300 (Christmas)

Squeezing every last bit of power out of a 4 Banger = Priceless

These are all actual prices I paid, or that I am going to pay
Be careful with the ebay items, I've read to many posts with the cheap headers cracking. the tb spacer I've got one on a 4.0, and didn't notice anything either. And every $40.00 intake I've seen has the filter right next to the engine, kinda cancels out the cold air part huh? And please tell me where your getting gears for $300.00 I'm in the market if they don't whine louder than hell.
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Old 11-25-2007, 12:37 AM   #23
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My intake was $37 with shipping, and its as far from the engine as can be. There are ring and pinion sets for a Dana 30, and 35 for $100-$130 on ebay

heres a few

http://cgi.ebay.com/ebaymotors/Dana-...spagenameZWDVW

and

http://cgi.ebay.com/ebaymotors/DANA-...spagenameZWD1V
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Old 11-25-2007, 12:46 AM   #24
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those aren't the ones im bidding on, but you get the point. They're cheap, and easy to purchase.
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Old 11-25-2007, 01:44 PM   #25
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Quote:
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that would be intresting...anyone ever thought of doing this???
Too bad rotaries dont have much low end power though They wouldnt make good natural friend w/ rocks and such. Maybe it might be good with a really high 1st gear and a torque converter.
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Old 11-25-2007, 03:36 PM   #26
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My intake was $37 with shipping, and its as far from the engine as can be. There are ring and pinion sets for a Dana 30, and 35 for $100-$130 on ebay

heres a few

http://cgi.ebay.com/ebaymotors/Dana-...spagenameZWDVW

and

http://cgi.ebay.com/ebaymotors/DANA-...spagenameZWD1V

thats all there is to it is the ring and pinion? like buying that would be all i need?

sorry for the newb question but i am coming from building 4 cyl hondas all my life...i know nothing about gears and such
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Old 11-25-2007, 03:53 PM   #27
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U need an overhaul kit for each axle, but i couldn't find them on ebay. I'm getting mine from quadratec.
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Old 11-25-2007, 05:46 PM   #28
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Quote:
Originally Posted by new0wrangler View Post
but i am coming from building 4 cyl hondas all my life
keep that to your self since many people here get very fussy about such things and will make fun of you with everything they got.
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Old 11-25-2007, 09:29 PM   #29
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keep that to your self since many people here get very fussy about such things and will make fun of you with everything they got.
lol. alright thanks
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Old 11-25-2007, 09:30 PM   #30
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U need an overhaul kit for each axle, but i couldn't find them on ebay. I'm getting mine from quadratec.
can u send me a link?

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