its a great car pal,looks and sounds awesome and is positively rocket propelled,certainly not to be sniffed at bro.

 

cheers pal

 

Hey guys, anyone know what size turbo blanket to use with the SC46 twin scroll? T3 or T4? Thanks.

 

T3 mate,have one on my SC42 which is the exact same size as the SC46

 

I was having trouble finding the answer in the US as Blouch was saying T3 would be a bit small but hadn't tried it themselves. Glad to know it works without issues. Which brand of blanket are using, does it cover the entire hot side and flange? Thanks for the help!

John

 

T3 size is certainly not too small mate,its a little large if anything but just means it covers more of the turbo when tightened up,so yes it does cover the entire hot side and flange,it was a cheap blanket off ebay but it fitted nice and does the job perfectly,dont think it would stand up to a track day hammering but i wont be doing any so its not a problem,link below mate.

http://www.ebay.co.uk/itm/Universal-...item3a68955f2a

 

Many thanks . Now it's time for me to order the turbo blanket, heat wrap, gold heat tape etc so I can get this build done. I'm stuck waiting on a Process West TMIC which have been out of stock for months. I'll make sure to post up the graphs and mods when it's done, going for a broad power band with 450bhp (E85) and 2800lbs for weight, should be a blast to drive

 

errrmmm Glenn... graph is out of date matey

Simon

 

You got the SC46 results?

 

Sorry Simon had a few beers last night and forgot to update

20% meth added


This is what she gave us at 20% meth 1.7 bar and some more timing added,unfortunately tho the injectors had no more to give and the fuel pump was also maxed out and the car started to run lean after 6000rpm because of the fuel starvation.Simon backed the boost of a little to keep it safe until i fit new injectors and fuel pump which kev at the clinic has kindly supplied for me,740cc squirters and an RCM fuel pump will be going in and with these fitted and the boost turned back up and tweaked again the car should make close to the 500bhp mark.

THANKS FOR THE HARD WORK SIMON,Great results as always.

Well Kev,think we can now safely say the SC42 Billet works pretty well on a 2.0ltr car with supporting mods,all the SC billet range of turbo`s are awesome and a credit to you and scoobyclinic...WELL DONE.

 

Hi,

heres the graph.................





SC 42 Billet with a 20% meth mix.

Well done Simon for getting a stunning result and well done Glens nervous system for standing up to the job.

I recon with a new, bigger fuel pump and a set of 740cc injectors there could be close on 500 BHP on the table.

Cheers
Kev

 

Awesome result guys.

Out of interest what size injectors is the car currently running, what fuel pump and at what pressure ?
Does the SC42 on this vehicle have the 7 or 8cm housing ?

Martyn

 

Amazing Glenn/Simon/SC.

Glenn you must be champing at the bit to get the 740s/pump in and the next remap! .... Like you're not happy at the mo! lol

(Were you running 10% meth when at 451.6bhp then?)


Which pump - an out-of-tank Bosch 044? If so, will you be keeping the in-tank Walbro as a lift pump?

 

Hi,

its the 8cm version, I believe injectors are 550's at 3.5 bar, walbro 255 in tank,

I suggested the new RCM pump, the 2338 as these seem to perform very well and fit straight in the tank no messing, we just ran one at 500 BHP and it wasn't struggling at all.

One of those pumps and a set of bigger injectos should sort it, be interesting to see exactly where the SC42 Billet finally tops out.

cheers
Kev

 

Christ, that's some flow for 550's, never been able to do 400bhp on the 550's we have seen even with a lift in pressure.
Of late we have been using the Deatschwerks 300lph pump as an intank solution, the RCM one looks very similar to the Aeromotive 300lph pump.

Martyn

 

I didn't know 550's could flow that amount either, how is this possible then? Mine could only flow just over 400 with a FPR, do different varients of 550's flow more than others?

 

Same Q as Dunk - confused.com!

Have they been increased in cc (unbeknownst to Glenn)...?

 

Some do some done. Admittedly most wont and as last time it was mid 400s I had assumed it was on bigger. Had I realised it was on 550cc injectors we wouldnt have bothered tweaking yesterday.

Simon

 

Hi,

we have done a fair old bit of injector testing over the years and I am shocked that the ones in Glens car are 550's, my equation is, 550 X 4 divide by 5.25 = 419.6, or 420 BHP to round it up.

When we get them out they may well be bigger or just nasty 550cc ones that are squirting above their level, either way they were maxed out at 475 BHP so power was backed down for safety.

Remember the equation, (injector size X4 divide by 5.25) seems to work for us.

cheers
Kev

 

I get the cc x 4 (4 cyl). But what does the 5.25 relate to?

 

Have you tried the sc46 with an 8cm housing on a 2.0 ?

 

I normally use 5.4 but very similar

 

Being the technically-minded chap that I am, I'm trying to find some formulae to support these rule-of-thumb calculations...and so far, for a turbo engine, I'm finding that 3bar fuel pressure and 550 cc/min injectors, at 80% duty cycle, would be safe for around 285bhp, and max out at about 360bhp.

The only way I can "prove" that 420bhp (ish) is the max for 550cc injectors is to up the fuel pressure to 4.5bar...and I know that the fuel pressure increases in line with boost, so that may be the answer.

Can anyone confirm what the default fuel pressure is on a scoob, as then I can further validate my findings

 

this sc46 result you looking for ?

 

we were talking absolute max Tim so 100% not 80%.

550x4 x percent duty / 5.4 roughly is 3bar and 11:1 AFR.

Its gets more complicated when the car in question is also on methonal... therefore not mapped to 11:1 AFR.

Simon

 

Thanks Simon, hadn't factored in the AFR being non-stoich when on boost

 

its only rough but handy when speccing injectors

 

http://i529.photobucket.com/albums/d...x/f5d2e629.jpg

The above sc46 is that 7cm or 8cm ?

 

My sc46 is 8cm mate.mapped on 16.6% meth at 1.6 bar on standard p1 heads 2.0 forged etc

 

Cheers mate