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Unread 08-28-2012, 02:28 PM   #16
turboyj
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Oil feed is just a tee into the oil sending unit and i ran the return line into the front of the timing chain cover.
No i didnt mean E85 i just meant ethanol mix, here in iowa its like 89 octane, the cheapest gas u can buy, other than e85 obviously.

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Unread 08-28-2012, 02:28 PM   #17
caoboy
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ahh ok so just regular pump gas. That's pretty awesome for a homebrew build. Keep updating this thread with any mods you perform, or how longevity peformance is.
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Unread 09-01-2012, 05:22 PM   #18
rmmiller
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Is the power difference worth it. I got a 95 with the 2.5 I have 4.88 gears with 34" tires. I've been thinking of doing a turbo but I'm worried I'll do it and it won't be much of a change. Can u run yours in 5th gear with the turbo.
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Unread 09-01-2012, 09:13 PM   #19
91BoD
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It'll help keep up the speed when pulling hills, but chances are your rpms will be too low in 5th.

For every 14.7psi you boost you (approximately) double your displacement. So at 7 psi you'll have a 3.7L; hypothetically speaking.
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Unread 09-02-2012, 03:41 PM   #20
turboyj
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I actually have the 3speed auto transmission so i couldnt tell ya what rpms youd run in different gears but i can say that if you are mechanically inclined enough to do the build yourself and piece everything together the power is satisfying. Especially with 4.88's your yj oughtta get out and sprint. The difficult thing is to size your turbo right so you get the power band in the correct rpms. Smaller the better for something like a jeep where you want the power in lower rpms
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Unread 09-02-2012, 04:20 PM   #21
rmmiller
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I would need the power at around 3000 rpm's I've got good power at low speeds but I'm wanting more power running higher speeds like around 65-70 that's where my motor seems to loss it's torque and power.
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Unread 09-03-2012, 01:26 AM   #22
ratmonkey
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Quote:
Originally Posted by rmmiller View Post
I would need the power at around 3000 rpm's I've got good power at low speeds but I'm wanting more power running higher speeds like around 65-70 that's where my motor seems to loss it's torque and power.
a solid 2.5l should be able to hold 70mph at 3k. i've been in a few that held 80mph just fine while stock.

i'm willing to bet your motor is getting tired. before you do ANY kind of forced induction on it you need to verify compression and that your timing chain and valve train is in good condition.
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Unread 09-03-2012, 05:47 AM   #23
turboyj
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I dont think hes running stock tires tho. My jeep with 33s could barely reach 55 on highways and id lose up to 15mph trying to climb a hill. It was horrible. Im not saying that my engine isnt tired, just saying how it was.
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Unread 09-03-2012, 05:24 PM   #24
kachink
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Factory turbo setups (on gas engines anyway) are usually engineered to provide boost for short bursts, like on acceleration, not for long pulls on the hwy. I owned a 4 cyl T-Bird with a turbo & a 5 speed manual and would marvel at how well matched the engine power --> turbo boost --> gear ratios --> vehicle weight were to work well in any situation. There was no boost on normal hwy cruising. On hills it would see some boost, but not full on like acceleration. Towing a trailer voids the warranty because of this.

The point I'm trying to make is, if you rely on a turbo for long pulls on the hwy, you're going to put a lot of extra stress on your engine for long periods and it's not likely to end well.
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Unread 09-03-2012, 08:31 PM   #25
rmmiller
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Quote:
Originally Posted by ratmonkey
a solid 2.5l should be able to hold 70mph at 3k. i've been in a few that held 80mph just fine while stock.

i'm willing to bet your motor is getting tired. before you do ANY kind of forced induction on it you need to verify compression and that your timing chain and valve train is in good condition.
I'm running 34" tires with about 6"-7" of lift so it's not stock the motor is strong for a 4cyl but I want to be able to cruise on the interstate and keep up with traffic without fighting the jeep that's what I was looking for.
image-1921171932.jpg  
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Unread 09-04-2012, 07:24 AM   #26
caoboy
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Quote:
Originally Posted by turboyj View Post
I dont think hes running stock tires tho. My jeep with 33s could barely reach 55 on highways and id lose up to 15mph trying to climb a hill. It was horrible. Im not saying that my engine isnt tired, just saying how it was.
I was having the same problem, dropped down to 31's I had no issues anymore on the hwy staying at 65-70.
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Unread 09-05-2012, 05:54 PM   #27
turboyj
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Yeah but nobody wants to run 31's..... Just saying dude
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Unread 09-05-2012, 06:06 PM   #28
skip11and1
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lol
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Unread 09-06-2012, 08:26 PM   #29
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id have to agree id rather be big and slow then small and fast, atleast my gf agress lol jk
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Unread 09-06-2012, 09:53 PM   #30
turboyj
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Well put skippy. Lol
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