Twinscroll Turbo choice. SC46 billet or LM450 billet?
13 May 2012, 10:17 AM
#31
Ok, there is a about a £500 price difference, the SC series being the cheaper.
Scooby Clinic's are 'true' twin scroll, Litchfields LM are 'twin entry'.
I would like to just bolt on a turbo to start with maybe just changing to 740cc injectors.
What will my standard Spec C internals safely take without having to worry about them. i.e pistons, conrods and crankshaft.
considering LM 420 or 450
SC 42 or 46
Cheers
Andrew
Scooby Clinic's are 'true' twin scroll, Litchfields LM are 'twin entry'.
I would like to just bolt on a turbo to start with maybe just changing to 740cc injectors.
What will my standard Spec C internals safely take without having to worry about them. i.e pistons, conrods and crankshaft.
considering LM 420 or 450
SC 42 or 46
Cheers
Andrew
As for what your internals will "safely take", that would depend on what condition they are in. I`d get a compression test done first. Then take the money you save, spend it on v-power and enjoy...
13 May 2012, 11:22 AM
#34
Also, from what i understand Scooby Clinic offer to take the exhaust housing from my current turbo(vf36) to use on the SC42/46 as this cuts cost. But is it not the exhaust housing on the vf36 that restricts the airflow and limits them?
Or have i got my wires crossed somewhere?
Or have i got my wires crossed somewhere?
13 May 2012, 04:04 PM
#43
thanks for the graphs, it would now be good to et some LM turbo comparisons....
If you go on the graphs that Shaun has for his LM400 and 450 the SC42 and 46 do seem to appear to make power much later and slower. Saying that, the figures are still impressive on the SC turbos.
At present i feel the LM turbos are like the Rolls Royce of twin scrolls and the SC turbos are what Harvey would call 'a belt and braces' solution
If you go on the graphs that Shaun has for his LM400 and 450 the SC42 and 46 do seem to appear to make power much later and slower. Saying that, the figures are still impressive on the SC turbos.
At present i feel the LM turbos are like the Rolls Royce of twin scrolls and the SC turbos are what Harvey would call 'a belt and braces' solution
13 May 2012, 04:13 PM
#45
The supporting mods might be the rolls Royce of support mods too mate lol
I don't no much about the other turbos as they were very slow with their results ? And I'd by that time sorted my own .
Need graphs good n bad in all to see true best turbos
I don't no much about the other turbos as they were very slow with their results ? And I'd by that time sorted my own .
Need graphs good n bad in all to see true best turbos
13 May 2012, 05:01 PM
#46
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SC46 on a standard engine?!?! Isn't that a bit brave?
Would imagine the wick has had to be turned down a bit. Good result though, I'm just wondering whether an SC42 wouldn't have done the same with better spool?
I have one on my 2.5 and it's an unbelievably good turbo!
Would imagine the wick has had to be turned down a bit. Good result though, I'm just wondering whether an SC42 wouldn't have done the same with better spool?
I have one on my 2.5 and it's an unbelievably good turbo!
13 May 2012, 08:30 PM
#53
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2.5 here too, I have the single scroll SC46 billet so would muddy the waters further.... then you have the different mods etc... how long is a piece of string really. The SC46 billet does seem to just work nicely on most applications though. Check out the graphs on the SC thread. With a decent set up, they seem to consistently make more than the expected 460 mark on sensible (sometimes relatively modest) boost, without resorting to funny fuel
Last edited by New_scooby_04; 13 May 2012 at 08:31 PM.
13 May 2012, 09:01 PM
#57
Scooby Regular
To save you flipping between threads here is mine.
OEM standard 2ltr JDM engine
BRD Induction
GT2 Hybrid FMIC
SFS inlet pipe
Billet LM450
800cc injectors
OEM ECU
VPower
Most of the graphs you see based on any of these turbos, are from runs of the dyno session used for mapping. Mine isn't and I would be confident that if my car had been mapped on the Dyno Dynamics rr, it would break 450bhp.
However... just because my set-up gets x and someone elses set-up gets y, is does not mean you will get the same... even with the same mods. This game is not that uniform.
Regardless of all this crap
I still think my results are pretty impressive for a standard 2ltr.
I'm being drawn into trying a Meth map in the near future and getting the car remapped on a Dyno Dynamics to boot. We'll see...... it would be the cheapest way of potentially reaching another +10%.
Anyway.... here is the last graph:
OEM standard 2ltr JDM engine
BRD Induction
GT2 Hybrid FMIC
SFS inlet pipe
Billet LM450
800cc injectors
OEM ECU
VPower
Most of the graphs you see based on any of these turbos, are from runs of the dyno session used for mapping. Mine isn't and I would be confident that if my car had been mapped on the Dyno Dynamics rr, it would break 450bhp.
However... just because my set-up gets x and someone elses set-up gets y, is does not mean you will get the same... even with the same mods. This game is not that uniform.
Regardless of all this crap
I still think my results are pretty impressive for a standard 2ltr.I'm being drawn into trying a Meth map in the near future and getting the car remapped on a Dyno Dynamics to boot. We'll see...... it would be the cheapest way of potentially reaching another +10%.
Anyway.... here is the last graph:
Last edited by Shaun; 13 May 2012 at 09:15 PM.
13 May 2012, 09:26 PM
#59
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Standard JDM internals/AVCS
ID1000`s
Hyperflow FMIC with CAK
MDX321T twin scroll
Viper inlet pipe.
OEM e.c.u.
Mapped very safley 1.4 bar top end. Only thing with the graph is, the car had to be ran in 5th instead of 4th because it wouldn`t stay in the rollers. But the graph still shows the car in 4th. Don`t know how this and the lack of grip affected the graph.
ID1000`s
Hyperflow FMIC with CAK
MDX321T twin scroll
Viper inlet pipe.
OEM e.c.u.
Mapped very safley 1.4 bar top end. Only thing with the graph is, the car had to be ran in 5th instead of 4th because it wouldn`t stay in the rollers. But the graph still shows the car in 4th. Don`t know how this and the lack of grip affected the graph.