Spec C It's Staying
23 November 2012, 12:47 AM
#1
Scooby Regular
Thread Starter
iTrader: (100)
Join Date: Oct 2008
Location: Planet Earth
Posts: 13,684
Likes: 0
Received 0 Likes
on
0 Posts
Spec C, It's Staying - So It's Time For Some Further Improvements
I hinted in an earlier thread that the Spec C might well be going but now it's staying and it'll have some improvements in the engine in terms of power. 
The LM400 turbo was sold earlier and so what to replace it with?
Basically it comes down to a choice of either the Scoobyclinic SC46 or the SC50 twin scroll turbo's. Obviously the larger SC50 will trade off some spool for the greater power output but it's not so great a difference as to make a massive difference to it's road manners.
I've basically made my mind up on the SC50 but I'd be interested in other members opinions.
Nearly forgot I'll also be fitting an RCM induction kit, 850cc or greater fuel injectors plus a Perrin intake hose as well.
The LM400 turbo was sold earlier and so what to replace it with?
Basically it comes down to a choice of either the Scoobyclinic SC46 or the SC50 twin scroll turbo's. Obviously the larger SC50 will trade off some spool for the greater power output but it's not so great a difference as to make a massive difference to it's road manners.
I've basically made my mind up on the SC50 but I'd be interested in other members opinions.
Nearly forgot I'll also be fitting an RCM induction kit, 850cc or greater fuel injectors plus a Perrin intake hose as well.
Last edited by Cannon Fodder; 01 February 2013 at 10:48 PM. Reason: Title Change
23 November 2012, 10:17 AM
#4
After all the work, time and cash spent on it Ty, Im glad your keeping it. Im running the SC46 twin scroll. I did think about holding out for the 50, but I felt the 46 would be better for "road use" and the 50 would be better for "*****-waving numbers" down the pub. That said, Im still tempted to try the 50 on my 2.5, but I just want to enjoy the car for a while now. You may want to consider RCM`s uprated fuel pump to assist the 850`s unless you have already uprated the pump. Whichever you go for, Im sure you will love it....
23 November 2012, 10:36 AM
#5
Scooby Regular
Thread Starter
iTrader: (100)
Join Date: Oct 2008
Location: Planet Earth
Posts: 13,684
Likes: 0
Received 0 Likes
on
0 Posts
After all the work, time and cash spent on it Ty, Im glad your keeping it. Im running the SC46 twin scroll. I did think about holding out for the 50, but I felt the 46 would be better for "road use" and the 50 would be better for "*****-waving numbers" down the pub. That said, Im still tempted to try the 50 on my 2.5, but I just want to enjoy the car for a while now. You may want to consider RCM`s uprated fuel pump to assist the 850`s unless you have already uprated the pump. Whichever you go for, Im sure you will love it....
I think given the minimal spool difference between the SC46 and SC50, I believe to be a little less than 500rpm plus the SC50 reaches full spool at around 4000rpm.
One thing that is on my mind is that a lot of cars using 500bhp capable turbos tend to be either stroker engines or the 2.5 engine, so how would a JDM 2.0 forged engine perform with an SC50 fitted?
I've not seen any results of a setup similar to mine with an SC50 fitted , I know that Daz Davies has had one fitted recently but I have not seen any results unless someone can point me in the right direction.
I already have the uprated RCM fuel pump fitted and have done since my last mapping session with Bob Rawle, I had to abort the previous mapping session with Bob due to the standard Spec C fuel pump failing at the top end of fuel delivery.
The car that was to replace it was a real beast of a P1 with uprated everything possible, and that would have been a very worthy replacement as well.
Trending Topics
23 November 2012, 10:49 AM
#8
Scooby Regular
iTrader: (6)
Join Date: May 2012
Location: Cardiff
Posts: 3,221
Likes: 0
Received 0 Likes
on
0 Posts
Glad you decided to keep her Ty, somebody would have been having a near enough perfect car for a bargain really!
Is there much of a difference between the lm series and the sc series in terms of spool and top end power then?
Is there much of a difference between the lm series and the sc series in terms of spool and top end power then?
23 November 2012, 11:00 AM
#10
Scooby Regular
Thread Starter
iTrader: (100)
Join Date: Oct 2008
Location: Planet Earth
Posts: 13,684
Likes: 0
Received 0 Likes
on
0 Posts
Besides I would be worried about owning a 22B in case it got a mark or damaged, although I am not ruling it out for good.
Not as much as I am look forward to seeing the end result on the RR at Enginetuner.
I had planned to send my LM400 off to be converted to an LM450 but given the costs it made more sense to sell the LM400 and change it for a larger twin scroll turbo.
23 November 2012, 11:56 AM
#11
Scooby Regular
iTrader: (6)
Join Date: May 2012
Location: Cardiff
Posts: 3,221
Likes: 0
Received 0 Likes
on
0 Posts
Well if its anything like the lm450 for spool wise you won't be disappointed, I love how mine gets up and takes off, looking forward to seeing one of the sc range on a twin scroll and your the perfect guy for an honest opinion on if its worth the loss of spool vs top end gains, I can't see it being that much laggier in all honesty tho and be interesting to see the spool differences given its a true twin scroll
23 November 2012, 04:38 PM
#15
Scooby Regular
Join Date: Feb 2002
Location: Hunting down door dinger's in south wales..
Posts: 2,485
Likes: 0
Received 2 Likes
on
2 Posts
Well done Ty, glad you seen sence in the end, would have been a shame to get rid of such a good car after all the hard work you put into it getting as you want it.
I know the excitement of getting a new car is hard to resist sometimes, and I think after a while you would have regreted it..
I know the excitement of getting a new car is hard to resist sometimes, and I think after a while you would have regreted it..
23 November 2012, 04:55 PM
#17
Well done Ty, glad you seen sence in the end, would have been a shame to get rid of such a good car after all the hard work you put into it getting as you want it.
I know the excitement of getting a new car is hard to resist sometimes, and I think after a while you would have regreted it..
I know the excitement of getting a new car is hard to resist sometimes, and I think after a while you would have regreted it..
23 November 2012, 04:57 PM
#18
Scooby Regular
Thread Starter
iTrader: (100)
Join Date: Oct 2008
Location: Planet Earth
Posts: 13,684
Likes: 0
Received 0 Likes
on
0 Posts
Well done Ty, glad you seen sence in the end, would have been a shame to get rid of such a good car after all the hard work you put into it getting as you want it.
I know the excitement of getting a new car is hard to resist sometimes, and I think after a while you would have regreted it..
I know the excitement of getting a new car is hard to resist sometimes, and I think after a while you would have regreted it..
I regretted selling my S202 as soon as I saw it drive away.
23 November 2012, 04:59 PM
#19
Scooby Regular
Thread Starter
iTrader: (100)
Join Date: Oct 2008
Location: Planet Earth
Posts: 13,684
Likes: 0
Received 0 Likes
on
0 Posts
Well if its anything like the lm450 for spool wise you won't be disappointed, I love how mine gets up and takes off, looking forward to seeing one of the sc range on a twin scroll and your the perfect guy for an honest opinion on if its worth the loss of spool vs top end gains, I can't see it being that much laggier in all honesty tho and be interesting to see the spool differences given its a true twin scroll
23 November 2012, 08:17 PM
#24
Scooby Regular
iTrader: (7)
Join Date: Oct 2003
Location: Stealth mode on
Posts: 5,277
Likes: 0
Received 0 Likes
on
0 Posts
I would say the SC50 would be laggy on a 2.0 but the twin scroll should make that back up.
My old type R had the non billet SC46 on a 2.5 which made for mental spool. Next to no lag and what i'll get on mine when I finally get round to modding the engine on mine
My old type R had the non billet SC46 on a 2.5 which made for mental spool. Next to no lag and what i'll get on mine when I finally get round to modding the engine on mine
23 November 2012, 10:26 PM
#25
Scooby Regular
Thread Starter
iTrader: (100)
Join Date: Oct 2008
Location: Planet Earth
Posts: 13,684
Likes: 0
Received 0 Likes
on
0 Posts
The SC series certainly is a very cost effective solution for bang for your buck.
25 November 2012, 07:42 AM
#29
Scooby Regular
Thread Starter
iTrader: (100)
Join Date: Oct 2008
Location: Planet Earth
Posts: 13,684
Likes: 0
Received 0 Likes
on
0 Posts
So it is going to be an SC50 twin scroll along with following other mods:
850cc injectors in place of the 650cc ones I already have
RCM induction kit with a cold air feed from a Ramair hose moulded into the drivers side fog lamp insert
AP turbo inlet pipe to alleviate any issues with the Samco hose sucking flat higher up the power range
Simtek upgraded to latest Alcatek firmware with 8 maps which will include high power for V Power / V Power with methanol, low power / everyday use, emergency fuel map for 95 RON and a valet or pleb map
Toucan display with sensors for operating the new Alcatek features
Innovate LC-1 wideband controller with display
The car will be having the mapping carried out by Martyn down at Enginetuner on their RR, plus as usual the mapping will be finished off on the road.
850cc injectors in place of the 650cc ones I already have
RCM induction kit with a cold air feed from a Ramair hose moulded into the drivers side fog lamp insert
AP turbo inlet pipe to alleviate any issues with the Samco hose sucking flat higher up the power range
Simtek upgraded to latest Alcatek firmware with 8 maps which will include high power for V Power / V Power with methanol, low power / everyday use, emergency fuel map for 95 RON and a valet or pleb map
Toucan display with sensors for operating the new Alcatek features
Innovate LC-1 wideband controller with display
The car will be having the mapping carried out by Martyn down at Enginetuner on their RR, plus as usual the mapping will be finished off on the road.