Twin BW s300's
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Joined: Nov 2003
Posts: 13,616
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From: Norn Iron
Huh thats weird the norm LSXS turbo distributors (like forcedinductions) sell them for 750+ shipping... The nice ones are over $1000 each.
I've heard about BW clones floating around ebay as well. I'd be nervous buying those. Still $1200 worth of turbo and additional plumbing/headache is overkill for 14lbs on a 5.7 IMO.
I've heard about BW clones floating around ebay as well. I'd be nervous buying those. Still $1200 worth of turbo and additional plumbing/headache is overkill for 14lbs on a 5.7 IMO.
But I agree, a pair of 66's on a standard 5.7 is just silly. Not only oversize, but will probably spool crap too.
That would be better, but it's about matching the engines airflow to what the turbo can supply efficiently. They'd also make a lot more pressure than 25psi on a 5.3.
Unless the motor was forged, had a bit higher compression than stock and a well matched camshaft I feel that a stock headed/cammed 5.3 won't have enough VE to efficiently utilize those turbos.
They will spool slow(er) than a better matched turbo(s) and they will make less torque and under the curve than a better matched turbo.
Can you do it? Of course you can do it I have a customer right now running S366's on a 5.3 on 14psi with a custom grind that runs 9.20@142mph 3100-3200# RW.
It is an all out drag car though and under the curve and transient response mean nothing to him. On a street car though I think it's pretty important and not "BS" as one member mentioned.
Unless the motor was forged, had a bit higher compression than stock and a well matched camshaft I feel that a stock headed/cammed 5.3 won't have enough VE to efficiently utilize those turbos.
They will spool slow(er) than a better matched turbo(s) and they will make less torque and under the curve than a better matched turbo.
Can you do it? Of course you can do it I have a customer right now running S366's on a 5.3 on 14psi with a custom grind that runs 9.20@142mph 3100-3200# RW.
It is an all out drag car though and under the curve and transient response mean nothing to him. On a street car though I think it's pretty important and not "BS" as one member mentioned.
Though I agree not all turds are created equal, and one turd may outshine another. It all Depends if 12 year old that assembled it knew his stuff, and if the recycled WOK melted down to create it was decent steel.
Thread Starter
Teching In
Joined: Nov 2011
Posts: 15
Likes: 0
From: Australia
Thread Starter
Teching In
Joined: Nov 2011
Posts: 15
Likes: 0
From: Australia
A few options that i have found to get the car up and running, 56.6mm, 61.5mm. & 69.3mm chinese turbos with 1 year warranty, cheap, free post and in oz so convenient if anything goes wrong. What would these 3 be like for a twin setup? Keep in mind 12-14psi max due to near stock junkyard alloy 5.7, & w/ odd street use as previously mentioned
http://www.ebay.com.au/itm/Universal..._qi=RTM1714243
http://www.ebay.com.au/itm/Anti-Surg..._qi=RTM1714243
http://www.ebay.com.au/itm/T4-flange..._qi=RTM1714243
edit: should i change the thread title or make a new thread?
http://www.ebay.com.au/itm/Universal..._qi=RTM1714243
http://www.ebay.com.au/itm/Anti-Surg..._qi=RTM1714243
http://www.ebay.com.au/itm/T4-flange..._qi=RTM1714243
edit: should i change the thread title or make a new thread?
Last edited by boostin01; May 13, 2014 at 06:41 AM.
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Verdad Gallardo T3 stuff always made me nervous back pressure wise. The scroll exit on a T3 is pretty tiny… I’d think since your not going with high boost you’ll want turbos that produce very little back pressure. Out of those 3 I’d go with the T4’s.
Ideally I wouldn’t pair a 70mm comp wheel with a 64mm exh wheel though either. I’d look for a pair of 60-63mm T4’s in the .68-.83 range.
Heres a couple...
http://www.ebay.com.au/itm/GT45R-2-G...14be5bf&_uhb=1
http://www.ebay.com.au/itm/T70-T04Z-...afb226f&_uhb=1
Ideally I wouldn’t pair a 70mm comp wheel with a 64mm exh wheel though either. I’d look for a pair of 60-63mm T4’s in the .68-.83 range.
Heres a couple...
http://www.ebay.com.au/itm/GT45R-2-G...14be5bf&_uhb=1
http://www.ebay.com.au/itm/T70-T04Z-...afb226f&_uhb=1
Last edited by Forcefed86; May 13, 2014 at 07:42 AM.
Thread Starter
Teching In
Joined: Nov 2011
Posts: 15
Likes: 0
From: Australia
I cant seem to find anyone running these turbos to ask if theyre reliable at all, so im starting to regret my decision i bit lol, i guess time will tell.
I've read horror stories about others. I think you made a good choice based on the housing/wheel specs. When you get them I'd tear them down a bit look at the wheels, and make sure there isn't machining debris. Blow the oil ports out as good as you can and bolt those bad boys up!
How are these things size wise compared to some of the compact Turbonetics (Ashley or Lety) or Precision (6262 or 6265) units? I was considering something in the S300 series for my 408 that you did the cam for but since I want the turbos mounted similar to an APS setup space is at a premium.
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Martin,
How are these things size wise compared to some of the compact Turbonetics (Ashley or Lety) or Precision (6262 or 6265) units? I was considering something in the S300 series for my 408 that you did the cam for but since I want the turbos mounted similar to an APS setup space is at a premium.
How are these things size wise compared to some of the compact Turbonetics (Ashley or Lety) or Precision (6262 or 6265) units? I was considering something in the S300 series for my 408 that you did the cam for but since I want the turbos mounted similar to an APS setup space is at a premium.
I did have to re-work the oil fittings at the side of the block ( using Autokraft pan )and do away with the oil filter though, and switch to a remote filter, and oil return/scavenge was also tricky. With stock alloy pan you wouldnt have that same option I had to modify.
No idea what sort of space you have available on your car
AGP do some S200 based 61mm units that might be close to a lower 300, but in a smaller frame
Or the likes of the Precision 6266 can be had with the small 3"/2" inlet cover which is as small as you'll find.
