Twin Scroll Turbos?? Monster Spool.. FACT or FICTION???
#1
Twin Scroll Turbos?? Monster Spool.. FACT or FICTION???
I realize we would need to really compare 2 kits on the same exact car and dyno at the same time but something that is told to be Definitively better shouldnt have to split hairs to shows its excellence IMO.. Sure a couple hundred RPM here or there how can we fuss but when a SINGLE scroll turbo setup spools IDENTICAL to a TWIN SCROLL setup said to be LEAPS AND BOUNDS better one must question things.. Thats what i am doing.. Questioning things.. I recently took some interest in these TS setups as we have been actively road racing much more.. I have spoken with Shearer about small runner T3 manifolds for single scroll and how we can make them spool like TS setups and still have the big top end power..
Which brings me to this evening.. I came across a dyno sheet for a TS setup from a car which i would say wasnt a BUDGET build probably so thought i would dig thru some sheets for comparisons.. Below is a TS 4088 Turbo 2.3L setup..
Now here is a Single Scroll T3 6262 Setup on 2.3L motor..
now these appear to be near identical up to 650hp which is where we stopped with this car either due to lack of fuel or just didnt want to push the car.. As we already know the 6262 can make 750+hp..
Now doesnt this simple single scroll , 1 wastegate setup appear to have the same power band??? Not to mention is revving 8000+ and not dropping much power where as the other setup is dropping power at 7500.. We also know for a fact the single scroll HTA 82 spools even faster than 6262 so can you imagine that turbo on this setup..
Id like to see some more dyno sheets that support the TS ultra spool theory.. I know TedB has some of them I am sure.. Ill also see if i have any more 2.3L dyno sheets so we can compare further..
Mike
Which brings me to this evening.. I came across a dyno sheet for a TS setup from a car which i would say wasnt a BUDGET build probably so thought i would dig thru some sheets for comparisons.. Below is a TS 4088 Turbo 2.3L setup..
Now here is a Single Scroll T3 6262 Setup on 2.3L motor..
now these appear to be near identical up to 650hp which is where we stopped with this car either due to lack of fuel or just didnt want to push the car.. As we already know the 6262 can make 750+hp..
Now doesnt this simple single scroll , 1 wastegate setup appear to have the same power band??? Not to mention is revving 8000+ and not dropping much power where as the other setup is dropping power at 7500.. We also know for a fact the single scroll HTA 82 spools even faster than 6262 so can you imagine that turbo on this setup..
Id like to see some more dyno sheets that support the TS ultra spool theory.. I know TedB has some of them I am sure.. Ill also see if i have any more 2.3L dyno sheets so we can compare further..
Mike
#4
Mike
Last edited by AWD Motorsports; May 1, 2010 at 08:55 PM.
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#8
Mike
#10
Evolved Member
iTrader: (2)
Mike, I feel the same way. 1.5" runners are not needed for the Evo. Full Race kits are only availible in 1.25" and they can make great power. I don't agree with some of the companies saying that you need 1.5" runners if you are going to be making over 500-600hp. Hell, the stock manifold has seen 600-700hp quite a few times and has not had a problem.
Honestly, the best thing for spool would be to just do a 1.25" runner manifold with a T3 1.06 HTA3586. That would make 700hp and have amazing spool.
Mikey
Honestly, the best thing for spool would be to just do a 1.25" runner manifold with a T3 1.06 HTA3586. That would make 700hp and have amazing spool.
Mikey
#11
Evolved Member
iTrader: (33)
Thats news to me.. We ran our 6262 for several months @ 49psi on the street and track.. Even if you prefer the true Garrett cartridge which means HTA over PTE id go that route before 40r myself.. That turbo i consider a dinosaur with its Cast Blade aeros.. Good luck either way tho..
Mike
Mike
#12
Mike
#13
Evolved Member
iTrader: (94)
my 30r TS setup his 27psi at 3750 rpm.
mike. post up a 4088R setup on the same ''around about'' boost.
as for HTA 86 failing. or a 6262. um. it happens. every turbo will fail. phil IMO if your looking for 86HP. run the 86. it works well in TS. i see your point but your not pushing the 4088r or a 86 hard enough to hurt anything.
mike. post up a 4088R setup on the same ''around about'' boost.
as for HTA 86 failing. or a 6262. um. it happens. every turbo will fail. phil IMO if your looking for 86HP. run the 86. it works well in TS. i see your point but your not pushing the 4088r or a 86 hard enough to hurt anything.