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Discussion Starter · #1 ·
I want to pick somebodies brain for a while.
Better then picking your nose <IMG SRC="smilies/clown.gif" border="0">
 

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Discussion Starter · #3 ·
Gear ratio to tire size stuff. I'm going to turbo charge my Jeep and will be regearing it first.
Wanted to make sure I don't over gear it while it's normally asperated.

What kind of gears do you run for 35's?

Also, how many pounds of boost are you at? What RPM range do you get your boost at?
 

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ohhhh

a jeepster has gone to the dark side of toys.

ha ha ha

just get a toy! <IMG SRC="smilies/massey.gif" border="0">
 

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Originally posted by FNG:
<STRONG>Gear ratio to tire size stuff. I'm going to turbo charge my Jeep and will be regearing it first.
Wanted to make sure I don't over gear it while it's normally asperated. </STRONG>
OK, now we are getting somewhere. I am actually rebuilding my motor right now, you can read about the specs here.

<STRONG>What kind of gears do you run for 35's? </STRONG>

I would say that it depends on what size motor you are running and what turbo. I am running a T3/T4 hybrid with a ball bearing center section, which allows the turbo to spool up quicker. With a 2.5L Jeep motor and a turbo I would say 4.88s.

Also consider tire weight. I would use lower gears to turn 35x15 SXs than 35x12 BFGs. The difference in weight is like 20 pounds. Steel vs. aluminum wheels are the same.

<STRONG>Also, how many pounds of boost are you at? What RPM range do you get your boost at? </STRONG>

My stock turbo motor liked to cruise down the road at around 1700 rpm, which is a lot lower than naturally aspirated 22REs cruise down the freeway.

Stock boost was 6 psi. I am going to stay with that until I do some tuning and add an intercooler, then I will go up to about 12 psi. I got my turbo from Jeff Moskovitz (check out
his page) and he said that he saw full boost before 2000 rpm. The stock Toy turbo had more lag, it didn't really come on until about 2400 rpm. 400 might not sound like a lot, but the difference is night and day.

If you have any other questions keep asking them.
 

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how hard was it to switch the yota to a T3/4 turbo? My cousin's turbo is goin out and we are looking to replace it.
 

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Originally posted by 85toyboy:
<STRONG>how hard was it to switch the yota to a T3/4 turbo? My cousin's turbo is goin out and we are looking to replace it.</STRONG>
I am using a custom header made by Dave G to mount my T3/T4. LC Engineering also makes a similar header for the 22RTE motors. You can read Jeff Mosk's review of it on 4x4Wire. Other options include TEC's turbo kit. This is what I was originally going to do, it is a very complete kit and the cost is reasonable. I waited around for three months for one of their kits though and I finally decided that I could make more power with custom components. Your cheapest option to to just make an adapter to the stock manifold.
 

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Discussion Starter · #8 ·
Originally posted by Dirty Harry:
<STRONG>OK, now we are getting somewhere.

My stock turbo motor liked to cruise down the road at around 1700 rpm, which is a lot lower than naturally aspirated 22REs cruise down the freeway.

Stock boost was 6 psi. I am going to stay with that until I do some tuning and add an intercooler, then I will go up to about 12 psi. I got my turbo from Jeff Moskovitz (check out
his page) and he said that he saw full boost before 2000 rpm. The stock Toy turbo had more lag, it didn't really come on until about 2400 rpm. 400 might not sound like a lot, but the difference is night and day.

If you have any other questions keep asking them.</STRONG>
Okay...

what speeds are you maintaining at 1700 RPM's? What gear ratio are you running? Still on 31's?

Having run this four banger for the last 4-5 years I know how much difference you get in 400 RPM's, and planned to run a T3 with an intercooler at around 7-8 psi. I'm just looking to see the boost in the 2200-2500 RPM range.

Oh, and I wouldn't call me a Jeepster. I just drive a Jeep now. If I had found a good price on a early 4 Runner when I was looking then I'd be driving that now instead. I don't descriminate!
 

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Originally posted by FNG:
<STRONG>what speeds are you maintaining at 1700 RPM's? What gear ratio are you running? Still on 31's?</STRONG>
Actually I am running P235s (29s). <IMG SRC="smilies/rolleyes.gif" border="0"> Sorry, I was off by a grand too, the motor actually turns at 2700 rpm when I am going 70 down the freeway. This is with stock 4.10 gears. 2700 rpm isn't too bad. Mileage would probably be better with a little less gearing, but the passing power is still good. I -think- that 22RE guys usually run down the road at a little over 3k to maintain power.

<STRONG>Having run this four banger for the last 4-5 years I know how much difference you get in 400 RPM's, and planned to run a T3 with an intercooler at around 7-8 psi. I'm just looking to see the boost in the 2200-2500 RPM range.</STRONG>
Sounds like a good setup. Although it won't idle down as low as a 4.0L or have the low end torque, you should be making as much horsepower and you can make up for the rest in gearing. I personally think that the 250+ pound weight savings is worth it.

<STRONG>Oh, and I wouldn't call me a Jeepster. I just drive a Jeep now. If I had found a good price on a early 4 Runner when I was looking then I'd be driving that now instead. I don't descriminate! </STRONG>
I am the same way. I used to have a CJ but I wanted something lighter and more cargo room. So far I am pretty happy with how my truck is progressing.
 

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Discussion Starter · #10 ·
Well it'll chug down in to the 200-300 RPM range already. I put a weight on the fly wheel from Tri County Gear when I had to do some tranny work. And yes, gears handle the rest.
 

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Really?! That is pretty good lugging. My motor stalls below about 600 rpm. Once again, 400 rpm is all the difference in the world. I am at 78:1 and this truck doesn't crawl nearly as well as my CJ did at 50:1.

I wonder if the compression ratio has anything to do with it? Are you going to lower your compression when you add the turbo? Stock Toyota turbo motors have a CR of about 7.3:1, and my rebuilt motor is going to run 8.5:1, plus they are bored .040 over. This should give me a little more low-end on the trail when I am not pushing any boost.
 
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