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Low RPM / high torque

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Old Feb 21, 2013 | 03:18 PM
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Default Low RPM / high torque

I have a LQ4 that I am building for my jeep. I am looking for low rpm (<5000) and torque off idle.

Most builds on here are high rpm so it's hard to pick a turbo off these threads.

I have a hx55 from one of my diesel engines. Will this spool up in my rpm range (1000-5000) and give good torque?

Or should I sell and look for something else? Ideally I'd like to hit full spool by 4000-4500 rpm.

This vehicle will probably never see over 80mph.
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Old Feb 21, 2013 | 03:21 PM
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You could do it with a turbo....but a PD blower is really what you need for that.

Or must you use a turbo for some reason ?
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Old Feb 21, 2013 | 03:22 PM
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Don't have to use a turbo. Just have one laying around. You have a link to that blower.

Aren't blowers typically more expensive?
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Old Feb 21, 2013 | 03:31 PM
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Depends on your typical lol.

If typical is a brand new billet BW turbo with full custom stainless manifolds etc etc etc. Then nope, a blower is probably cheaper.

If typical is a cheap used turbo, with factory cast manifolds adapted by yourself, then maybe the turbo is cheaper.

Unless you can find a good deal on a used blower setup, which I'm sure there are plenty out there.

But if you need instant power from very low rpm, a PD blower will be your best bet.
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Old Feb 21, 2013 | 03:31 PM
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Originally Posted by stevieturbo
You could do it with a turbo....but a PD blower is really what you need for that.

Or must you use a turbo for some reason ?
Quick search. Found TVS series blowers. Don't think I want to spend $5k+

Can't a turbo do it for cheaper. ~$2k
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Old Feb 21, 2013 | 03:33 PM
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Originally Posted by LS1TOYOTA
Don't have to use a turbo. Just have one laying around. You have a link to that blower.

Aren't blowers typically more expensive?
PD = positive displacement, typically any valley mounted blower.

http://www.magnacharger.com/

Is probably the most common. But there must be half a dozen or more variations around that theme/design
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Old Feb 21, 2013 | 03:33 PM
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Originally Posted by stevieturbo
Depends on your typical lol.

If typical is a brand new billet BW turbo with full custom stainless manifolds etc etc etc. Then nope, a blower is probably cheaper.

If typical is a cheap used turbo, with factory cast manifolds adapted by yourself, then maybe the turbo is cheaper.

Unless you can find a good deal on a used blower setup, which I'm sure there are plenty out there.

But if you need instant power from very low rpm, a PD blower will be your best bet.
I'd like to use the hx55 I have. Just wondering if it will work in my rpm range, 1000-5000
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Old Feb 21, 2013 | 03:43 PM
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I guess a lot would depend on the turbine. But generally it seems like a large unit. So not really ideal for low rpm usage.
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Old Feb 21, 2013 | 05:18 PM
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find a TVS1900, thats your best bet at getting all the low-end grunt you need. Note 1900 and not 2300, the smaller blower makes more low-end boost.

Then you can get a custom torqey cam that is specced for your set-up, requirements/goals
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Old Feb 21, 2013 | 05:23 PM
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IMO, always buy a bigger blower than you need. It will make sense in the long run, and generally they are more efficient anyway
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Old Feb 21, 2013 | 08:52 PM
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Im currently working on a TT set up for a Jeep. I have a thread on the conversion section since I didn't get much response over here.
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Old Feb 21, 2013 | 09:44 PM
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I'm using twin cx racing gt35's. 61mm compressor and 62mm turbine .68ar t4 flange. Haven't driven it yet but denmah is using them and they spool instantly. Said they feel like a supercharger
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Old Feb 21, 2013 | 09:45 PM
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Only like $300 a piece in Ebay
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Old Feb 22, 2013 | 11:29 AM
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Originally Posted by T76s10
I'm using twin cx racing gt35's. 61mm compressor and 62mm turbine .68ar t4 flange. Haven't driven it yet but denmah is using them and they spool instantly. Said they feel like a supercharger
Are you using the oil/water turbos? If so do you have to water cool it?
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Old Feb 22, 2013 | 11:30 AM
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Originally Posted by typhoon1015
Im currently working on a TT set up for a Jeep. I have a thread on the conversion section since I didn't get much response over here.
I'll be watching your thread. Mine is going in a 77 Wagoneer.
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Old Feb 22, 2013 | 12:06 PM
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Put a single 6765 on it and you will have the tq curve of a diesel
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Old Feb 22, 2013 | 05:21 PM
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You will want a smallish turbine and a regular sized compressor
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Old Feb 22, 2013 | 05:35 PM
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Originally Posted by LS1TOYOTA
Are you using the oil/water turbos? If so do you have to water cool it?
Yeah they are oil/water but i just plugged the water Ports
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Old Mar 2, 2013 | 09:56 AM
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Originally Posted by rotary1307cc
Put a single 6765 on it and you will have the tq curve of a diesel
Ideally this is what I'd like. I'm no where near ready to buy but researching.
Been looking at the s300 series turbos or even the s466sx with a 68mm turbine. Not sure on the a/r?
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