scoobyclinics turbo's just got billet I mean better!
Sc46 seems to be popular because it's the best compromise between spool and peak power from reading through the thread. Certainly the way I'll probably head with my build
Eventually
Eventually
No idea, it really depends on many factors.
I would recon a couple of hundred rpms sooner but i am by no means an expert in this field.
Kev and others should be able to answer this.
I would recon a couple of hundred rpms sooner but i am by no means an expert in this field.
Kev and others should be able to answer this.
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From: ECU Mapping - www.JollyGreenMonster.co.uk
Kev your not the first person who is in the business that I have heard that from but in your valued opinion going from that above that the 2.5 can do 450-475 if forged but going off one of your previous posts above regarding liners. If the 2.5 is fitted with liners
A) what power can this run?
B) which one of your Billet turbo's would you recomend? (Based on a fast road / occasional track day car)
C) based the turbo choice what would the power out out be?
D) at what rpm would you expect it to start making boost and then hit full boost?
Cheers, sorry for all the questions but looking for a new car soon and wondering what way to go as I have to top my old car which was bob rawles old sti 5 built by rcm and himself so its going to be hard but I think I can do it lol.
Thanks in advance for your help
A) what power can this run?
B) which one of your Billet turbo's would you recomend? (Based on a fast road / occasional track day car)
C) based the turbo choice what would the power out out be?
D) at what rpm would you expect it to start making boost and then hit full boost?
Cheers, sorry for all the questions but looking for a new car soon and wondering what way to go as I have to top my old car which was bob rawles old sti 5 built by rcm and himself so its going to be hard but I think I can do it lol.
Thanks in advance for your help
Hi,
we have run over 600 BHP on a linered 2.5 many times using a rotated GT30 Billet, we have in the past, pre billet days, run a GT35 on a re-linered 2.5 with huge success in time attack.

The down side we have found is that the liners can drop, this is not apparent until after running in and then the final map.

This means an engine strip, block re-face and build it for a 2nd time, no running in though just map and go.
It is something that people need to be aware of, with a re-linered block there is an 80% chance of doing it twice, although the re-linering has evolved and it seems the percentage of a 2nd build is falling.
Hope that answers a few of your questions, although does it raise more ?

cheers
Kev
Hi,
we have run over 600 BHP on a linered 2.5 many times using a rotated GT30 Billet, we have in the past, pre billet days, run a GT35 on a re-linered 2.5 with huge success in time attack.
The down side we have found is that the liners can drop, this is not apparent until after running in and then the final map.
This means an engine strip, block re-face and build it for a 2nd time, no running in though just map and go.
It is something that people need to be aware of, with a re-linered block there is an 80% chance of doing it twice, although the re-linering has evolved and it seems the percentage of a 2nd build is falling.
Hope that answers a few of your questions, although does it raise more ?
cheers
Kev
we have run over 600 BHP on a linered 2.5 many times using a rotated GT30 Billet, we have in the past, pre billet days, run a GT35 on a re-linered 2.5 with huge success in time attack.

The down side we have found is that the liners can drop, this is not apparent until after running in and then the final map.

This means an engine strip, block re-face and build it for a 2nd time, no running in though just map and go.
It is something that people need to be aware of, with a re-linered block there is an 80% chance of doing it twice, although the re-linering has evolved and it seems the percentage of a 2nd build is falling.
Hope that answers a few of your questions, although does it raise more ?

cheers
Kev
And what are the chances of having to strip and build again?
Thanks again.
Cheers Kev that has answered some but as you say opened others lol, I'm not after proper costing for a forged 2.5 but after paying out 'X' for the first build what is the actual cost to re strip and re check the liners and put it all back together?
And what are the chances of having to strip and build again?
Thanks again.
And what are the chances of having to strip and build again?
Thanks again.
Cheers Kev that has answered some but as you say opened others lol, I'm not after proper costing for a forged 2.5 but after paying out 'X' for the first build what is the actual cost to re strip and re check the liners and put it all back together?
And what are the chances of having to strip and build again?
Thanks again.
And what are the chances of having to strip and build again?
Thanks again.
Do as I have done and have your EJ257 Block pinned.
600bhp/565ftlbs and over 30 1/4 drag runswith a few in the 10's and 6000 road miles with mine. On a recent strip down following a silly valve clearance issue the bores are in fantastic condition.
Cost Circa £200

Last edited by dazdavies; May 31, 2011 at 01:02 AM.
SC50 Billet 
04 STI Type UK (2.0 stock engine)
SC50 billet turbo
GT Spec Headers & Harvey up-pipe
3" turbo back exhaust
Hybrid FMIC
Tial 50mm Q BOV
Hard inlet pipe
Simtek ECU mapped by Simon www.jollygreenmonster.co.uk
ID1000 injectors
Lateral supplied high flow walbro pump (bigger than the 255)
Exedy twin plate clutch



04 STI Type UK (2.0 stock engine)
SC50 billet turbo
GT Spec Headers & Harvey up-pipe
3" turbo back exhaust
Hybrid FMIC
Tial 50mm Q BOV
Hard inlet pipe
Simtek ECU mapped by Simon www.jollygreenmonster.co.uk
ID1000 injectors
Lateral supplied high flow walbro pump (bigger than the 255)
Exedy twin plate clutch


Hi,
Wow.
Nice result well done all involved.

Cheers
Kev
Joined: Jul 2008
Posts: 11,933
Likes: 21
From: 2minutes from J10 M6 Walsall West Midlands
sc46 billet or a 321t non billet? To complete my 2.5 build with all supporting mods to comfortably match one of the above turbos. What are the pro's and con's between these? What's the general thoughts of people using either?
The MD series of turbo's are great, I should know we were involved with the testing of these early doors, in fact I ran one on my own car for 3 years until we developed our own range of turbo's.
Its been a bumpy ride but we got there in the end, the SC turbos gaining recognition in the market place, many winning track cars helped to prove their worth.

Then they evolved with the Billet compressor wheel, more aerodynamic and on average 33% lighter, the best just got better, hence this epic thread.

cheers
Kev
So will a billet 46 spool better than the non billet 't'? I understand that the peak power output will be similar between both, not fussed about that. More or less wanting to find out which one will be a more responsive setup?
not wishing to get into a war on my own thread but the Billet should of course spool quicker.

Mark at Lateral performance is launching his range of MD Billets soon so maybe wait for a back to back but I do expect the MD321 Billet to be similar to the SC46 Billet.
Cheers
Kev
Been waiting for months now to get a LM400 turbo from Litchfield think am about ready to give up now.....how do these SC turbos compare to the LM series and which one should I go for as I don't want to sacrifice spool up for power.
we have had plenty success with our SC46 Billet twin scroll turbos, again though as in post # 1908.

Take a look at some of the graphs on page 32 they are all there.
Thanks for your interest in our turbos.

Cheers
Kev
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From: The Terry Crews of moderation. P P P P P P POWER!!
Have one on my 2.5 forged conversion. 470bhp 480lbs
Spools like a TD04 on a 2litre....and no, I'm not kidding!
Stunning turbo!
Sc46 on a 2.5 was the best thing i did. Spool is fantastic. I think mine was 1 bar at 2700rpm. Very neck snappy hehe.
Very curious about the liners but as mines a road car 450-500 is more than enough really.
Very curious about the liners but as mines a road car 450-500 is more than enough really.
Steve,
Do as I have done and have your EJ257 Block pinned.
600bhp/565ftlbs and over 30 1/4 drag runswith a few in the 10's and 6000 road miles with mine. On a recent strip down following a silly valve clearance issue the bores are in fantastic condition.
Cost Circa £200


Do as I have done and have your EJ257 Block pinned.
600bhp/565ftlbs and over 30 1/4 drag runswith a few in the 10's and 6000 road miles with mine. On a recent strip down following a silly valve clearance issue the bores are in fantastic condition.
Cost Circa £200


I would like to be aiming for mid 500 of each so would of thought a linered block would needed and a possible rotated setup so just trying to weigh up and look at all the possibilites
I had mine done as Zen Perfomance used one very successfully on their time attack car. Seemed a no brainer and certainly worth a punt. I've not yet heard of a single pinned block failing due to a split liner. The Zen one failed because of a thrown rod, the liners themselves were still intact.
Mine has just been rebuilt using the exact same block.
scoobyclinics turbo's just got billet I mean better!
...I think you'll like what you read.
We're all just waiting for SC to test it...






