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DanMon Profile
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Date Registered: 02-2009
TOTAL POSTS: 8
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Low revs turbo for power at low revs


Hey

Would using some form of Boost at low rpm ie 800 to 2000 or so for a bit of added power when on those steep climbs??

also would a boost controller allow you to stop it during normal driving conditions??

Please add any ideas or problems, Thou only helpful ideas please as im hopeing somone out there might know if this definatley will or wont work..

Cheers
Hope it will work and mayby even be affordable lol
13/Jul/2009, 4:50 pm Link to this post Send Email PM   Send Private Message
 
cooch t31 Profile
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Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re: Low revs turbo for power at low revs


To be honest, if you use the higher octane fuel, then it might give you what you need.

Turbo installation costs big money, just ask Cam, (hiimkam), (see turbo thread).



Last edited by cooch t31, 13/Jul/2009, 6:24 pm


---
Tony X-891c

HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1

13/Jul/2009, 6:21 pm Link to this post Send Private Message
 
NissanTaylor Profile
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Date Registered: 06-2008
Location: Canberra, ACT
TOTAL POSTS: 244
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Re: Low revs turbo for power at low revs


you would need a smallish turbo to get boost from 800rpm up to 2000rpm. yes you could have a dual stage boost controller and run very low boost normally and then switch to higher boost when you want it. its would be very pricey to do, esp if your paying someone to do it and your not doing alot or all of it yourself like Cam is. id be looking into an exhaust and/or intake. if not, as cooch t31 said run high octane fuel for a start.

---

X-897
My Old Platium 07 STS Xtreme - Click Here to check out my mods and pics
Now own a Black C34 Nissan Stagea RS4-S
13/Jul/2009, 9:42 pm Link to this post Send Email PM   Send Private Message
 
cooch t31 Profile
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Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re: Low revs turbo for power at low revs


I have to dis agree with you there NissanTaylor, Hi octane fuel can give your engine a little more spark, so to speak.
Most European cars only use Hi octane and I was reading in the ESM that it is also recomended for the T31 for optimal engine performance. It was also stated that normal unleaded can be used when desired.

I will find it this afternoon and post it in this thread.



Last edited by cooch t31, 14/Jul/2009, 6:53 am


---
Tony X-891c

HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1

14/Jul/2009, 6:50 am Link to this post Send Private Message
 
Dave4x4 Profile
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Date Registered: 08-2005
Location: NEWCASTLE
TOTAL POSTS: 685
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Re: Low revs turbo for power at low revs


Hey Tony,

I think Nissan Taylor agreed with you from what I just read unless I got it complety out of text. He was just giving options and opinion

just my 11 and a half cents worth

---
(Dave Newcastle 2004 ST
ID: X211

14/Jul/2009, 10:16 am Link to this post Send Email PM   Send Private Message
 
hiimkam Profile
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Date Registered: 11-2008
Location: Perth
TOTAL POSTS: 414
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Re: Low revs turbo for power at low revs


Yeh i can certainly confirm that it would be VERY pricey to do.
my setup is in the region of 4-5 grand.

Do you have a petrol motor or a turbo diesel?
a turbo that would spool at 800rpm is almost non-existant. something along the lines of a garrett GT15 or something, but that would be way too restrictive and would choke your engine, youd end up with deadly detonation at higher rpm due to higher exhaust gas temps. not to mention youd need the biggest wastegate in history, by dump that much gas.

also, our petrol engine computer runs closed loop control under 3000 rpm (doesnt "pay attention" to the O2 sensor to meter fuel) it just injects it at a constant rate. in other words, our ecu could not deal with the extra air and youd have huge lean spikes. so in order for this to work youd need a stand alone computer, like im planning.

unfortunately, our 4cyl engines are just that. no 4cyl petrol motor in existence can produce peak torque at 800-2000 rpm. even a diesel would struggle to have that much power down there.

if diesel, something you might look into doing, is upgrading the turbo to the closest Garrett ball bearing equivalent. looking at about 1300-1600 for a brand new GT28. these turbos spool up heaps quicker and provide more boost, lower on the rpm range.

---
GT2860rs, Ems stinger, tial external gate, 3" exhaust, 10psi and ~200kw @ all fours. Koya drifteks w/245/50 rubber, 70mm lowered springs, slotted rotors and painted calipers :)
14/Jul/2009, 4:17 pm Link to this post Send Email PM   Send Private Message MSN
 
cooch t31 Profile
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Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re: Low revs turbo for power at low revs


Thanks for pointing that out Dave, I just re read NissanTaylor's reply and relized that I had jumped the gun,( it was early this morning and I was tired.).
My appologies Nissan Taylor.

Here is what is in the ESM that I mentioned this mornig.

FUEL : Unleaded Premium Gasoline

Use unleaded premium gasoline with an octane rating of at least 95 RON (research octane number). If premium
unleaded gasoline is not available, unleaded regular gasoline with an octane rating of at least 91 RON
(research octane number) can be used. However, for maximum vehicle performance, the use of premium
unleaded gasoline is recommended.

---
Tony X-891c

HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1

14/Jul/2009, 8:52 pm Link to this post Send Private Message
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 5406
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Re: Low revs turbo for power at low revs


Volkswagen have a twincharged engine (high ratio supercharger + turbo) with their tsi engine as explained here.

Something similar could be done with a direct-drive supercharger and high ratio pulleys but you would need a clutch to disengage it at high rpms.

And it would be as pricey as a turbo system I expect.


---
Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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15/Jul/2009, 11:38 pm Link to this post Send Email PM   Send Private Message Blog
 
hiimkam Profile
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X-TRAIL FANATIC
 


Date Registered: 11-2008
Location: Perth
TOTAL POSTS: 414
Reply | QUOTE
Re: Low revs turbo for power at low revs


yeh i investigated a supercharger installation few months back, and to get a roots-type installed, is almost impossible. theres just no way to connect it to the drive belt. plus, any roots-type would be too big to fit well in the engine bay.

theres heaps of things to try before forced induction.
trust me, i tried/ considered almost all of them haha

id say start off with exhaust and intake.

---
GT2860rs, Ems stinger, tial external gate, 3" exhaust, 10psi and ~200kw @ all fours. Koya drifteks w/245/50 rubber, 70mm lowered springs, slotted rotors and painted calipers :)
16/Jul/2009, 12:17 am Link to this post Send Email PM   Send Private Message MSN
 
NissanTaylor Profile
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Date Registered: 06-2008
Location: Canberra, ACT
TOTAL POSTS: 244
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Re: Low revs turbo for power at low revs


hey kev ive had the pleasure (NOT) of working on the 1.3L TSi vw engine and learnt about at the volkswagen academy in sydney. apparently at full boost they run about 28psi boost!!! almost as quick as the 2L turbo GTI with only 1.3L.

as for running high octane fuel, it would take a little time for the computer to adjust the fuel trims etc, unless reset and then only running 98 octane. high octane fuel has a slower more controlled burn so the computer can advance the timing alittle more (than with 91 or 95 octane) for a bit more kick.

---

X-897
My Old Platium 07 STS Xtreme - Click Here to check out my mods and pics
Now own a Black C34 Nissan Stagea RS4-S
17/Jul/2009, 7:30 pm Link to this post Send Email PM   Send Private Message
 


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