Twinscroll Turbo choice. SC46 billet or LM450 billet?
how you keeping Shaun 
14 May 2012, 07:39 AM
#68
Great the ball is rolling on the graphs, twin scroll 2 litre only if people can. Please put up a mod list too if you can be ar$ed.
Here's a link to Scooby Clinics various graphs from their billet thread, but keep in mind that all have been posted by Scooby Clinic themselves and are not independents....
https://www.scoobynet.com/showpost.p...&postcount=929
Also, Can anyone give further information on an earlier question i asked?
Scooby Clinic do an exhaust housing swap on purchase with the OEM fv36/37 when purchasing the SC42 billet twin scroll, but i thought this was the weak link in these turbos towards making more power as the size of the housing restricts the gas flow across the turbine?? I read that DavidAPI had his vf36/37 modified by Owen Developments and got near 400bhp from it. Scooby clinic link...... http://http://www.scoobyclinic.com/products_turbo.htm
Can anyone cast some light on this?
Here's a link to Scooby Clinics various graphs from their billet thread, but keep in mind that all have been posted by Scooby Clinic themselves and are not independents....
https://www.scoobynet.com/showpost.p...&postcount=929
Also, Can anyone give further information on an earlier question i asked?
Scooby Clinic do an exhaust housing swap on purchase with the OEM fv36/37 when purchasing the SC42 billet twin scroll, but i thought this was the weak link in these turbos towards making more power as the size of the housing restricts the gas flow across the turbine?? I read that DavidAPI had his vf36/37 modified by Owen Developments and got near 400bhp from it. Scooby clinic link...... http://http://www.scoobyclinic.com/products_turbo.htm
Can anyone cast some light on this?
Last edited by apac; 14 May 2012 at 07:41 AM.
14 May 2012, 08:09 AM
#69
Your torque figure is very impressive Shaun.
I have now gathered all the bits to convert H13 from a GT30 to an SC50 twin scroll so testing on that should not be too long away. This should have been long finished by now but was unfortunately interrupted by my enforced absence.
I have gathered oil sump, pickup, headers, uppipe and downpipe as well as the SC50 sent by Kev.
I have now gathered all the bits to convert H13 from a GT30 to an SC50 twin scroll so testing on that should not be too long away. This should have been long finished by now but was unfortunately interrupted by my enforced absence.
I have gathered oil sump, pickup, headers, uppipe and downpipe as well as the SC50 sent by Kev.
14 May 2012, 08:42 AM
#70
Scooby Regular
Great the ball is rolling on the graphs, twin scroll 2 litre only if people can. Please put up a mod list too if you can be ar$ed.
Here's a link to Scooby Clinics various graphs from their billet thread, but keep in mind that all have been posted by Scooby Clinic themselves and are not independents....
https://www.scoobynet.com/showpost.p...&postcount=929
Also, Can anyone give further information on an earlier question i asked?
Scooby Clinic do an exhaust housing swap on purchase with the OEM fv36/37 when purchasing the SC42 billet twin scroll, but i thought this was the weak link in these turbos towards making more power as the size of the housing restricts the gas flow across the turbine?? I read that DavidAPI had his vf36/37 modified by Owen Developments and got near 400bhp from it. Scooby clinic link...... http://http://www.scoobyclinic.com/products_turbo.htm
Can anyone cast some light on this?
Here's a link to Scooby Clinics various graphs from their billet thread, but keep in mind that all have been posted by Scooby Clinic themselves and are not independents....
https://www.scoobynet.com/showpost.p...&postcount=929
Also, Can anyone give further information on an earlier question i asked?
Scooby Clinic do an exhaust housing swap on purchase with the OEM fv36/37 when purchasing the SC42 billet twin scroll, but i thought this was the weak link in these turbos towards making more power as the size of the housing restricts the gas flow across the turbine?? I read that DavidAPI had his vf36/37 modified by Owen Developments and got near 400bhp from it. Scooby clinic link...... http://http://www.scoobyclinic.com/products_turbo.htm
Can anyone cast some light on this?
The oem housing is machined out to accept the bigger turbine wheel needed for higher airflow.
I did this back in 2005 with Turbo Dynamics & Litchfields when testing TS.
14 May 2012, 08:43 AM
#71
Scooby Regular
Your torque figure is very impressive Shaun.
I have now gathered all the bits to convert H13 from a GT30 to an SC50 twin scroll so testing on that should not be too long away. This should have been long finished by now but was unfortunately interrupted by my enforced absence.
I have gathered oil sump, pickup, headers, uppipe and downpipe as well as the SC50 sent by Kev.
I have now gathered all the bits to convert H13 from a GT30 to an SC50 twin scroll so testing on that should not be too long away. This should have been long finished by now but was unfortunately interrupted by my enforced absence.
I have gathered oil sump, pickup, headers, uppipe and downpipe as well as the SC50 sent by Kev.
14 May 2012, 01:00 PM
#72
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14 May 2012, 01:36 PM
#73
Scooby Regular
mmm, I think thoses results maybe should be take with a pinch of salt, there were other issues with the rollers on that day too. I`ve ran one delta dash power run, power was very similar but torque was actually higher and peaked earlier, need to find some time to do some proper runs I can average out. Either way I have a nice printout.
15 May 2012, 01:24 PM
#75
Scooby Regular
Sorry Gus... missed this.
Everything is good mate... you? You sorted that car yet!?
apac,
I would have thought logically, yes. Integrity must be compromised but I'm not in a position to state that as fact.
Exhaust housings on a number of turbos are renowned to crack.... at least with the ni-resist iron casting process of the LM's, this should be reduced imo.
You pays your money and takes your chances.
14 November 2015, 05:43 PM
#79
May have to see if anyone comes on who's running one of those.. Thanks for your reply mate, how do you find it? Spoool etc perform well?
Martin
14 November 2015, 06:26 PM
#80
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spools really fast though its not running meth now. holds boost really strong. did really well round cadwell. im leaving the engine tuning now and concentrating on chassis and brakes and making it look like i want.
not that shaun had done a bad job but making it more ready for track after speaking to him shaun even offered his advice on where he would of gone next
not that shaun had done a bad job but making it more ready for track after speaking to him shaun even offered his advice on where he would of gone next
14 November 2015, 06:37 PM
#82
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yeah mine is still on standard ecu to how do you find syvecs as a dd waiting for alcatek to launch dbw hopefully soon but if not may have to bite the bullet
14 November 2015, 07:34 PM
#86
Do you guys think the lm450 would be ok without going fmic with maybe an injector change and sticking with the standard ecu? I ask this as I'm not looking for big numbers just want a fast standard looking road car 
It's quick as it is on the twinscroll set up but more would be fun
Martin
It's quick as it is on the twinscroll set up but more would be fun
Martin
14 November 2015, 08:04 PM
#87
I had a few maps on mine one being around 380bhp so its a very capable turbo,running a high boost map its about maxed out at 446bhp but could maybe run meth and be around 470bhp but happy with it the way it is.
Martin id still fit one with a tmic and get it mapped and see what the mapper thinks, you will still get a lot out of the lm450 as the newage top mount is fine at over 400bhp
Martin id still fit one with a tmic and get it mapped and see what the mapper thinks, you will still get a lot out of the lm450 as the newage top mount is fine at over 400bhp
Last edited by **jay**; 14 November 2015 at 08:06 PM.
14 November 2015, 11:59 PM
#88
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if your worried do they still make the lm420? if you read some of shauns post the spool difference between the lm400 and 450 is negligable in terms of driving only shows on a dyno graph
Last edited by chris_wrx; 15 November 2015 at 12:00 AM.
15 November 2015, 07:24 AM
#89
Cheers jay, I make take the punt and buy one, it's seems the best way to go and if things need changing down the line I'll adjust to suit.. The main objective would be to keep the fast spool that the 37 gives but more of a punch top end...
Chris I think they do, I checked the website last night the prices arnt cheap but then I suppose I won't find a second hand unit anyway
Martin
Chris I think they do, I checked the website last night the prices arnt cheap but then I suppose I won't find a second hand unit anyway
Martin
