Pulley

Take front inlet pipe off, grab nose of compressor wheel and wiggle, it shouldn’t have lots of side to side or thrust movement, also Check for oil on inlet and charge side of turbos Hard to tell sometimes if you still have crank case breathing into the inlet Dnk’s original advice is the best imo, and for intercooler to support 400ish bhp you don’t want bigger than 3” core really, and I’d stick with stock charge pipe size other wise you increase the charge side lag considerably with no gain as you’ll only ever need 400 levels of flow and cooling

Apologies for poor autocorrect as written with sausage fingers on iPhone

It’s a me mario , well Mark aka pulley actually Efficiency is the word, bigger turbines/ compressor wheels are more efficient and with the latest billet comp wheels the spinning mass weighs very little and coupled with the correct small hotside housing and volume of runner configuration a single will spook very quickly And be more reliable than machining out the ct20 turbo I have access to an engine dyna cell and my background is small jet engine development/flow dynamics so turbo work is in my line Which is why I decided to play with my ct20 setup to initially optimise it as it’s only rally designed to flow 3-400 flyhorsepower My large bore twin intake means I have the very least inlet restriction possible (smaller compressor wheels need all the help they can get) and as I’m running parallel a deleted charge side butterfly-Reed valve and I’m actually running 2 front turbos so utilising 2 wastegates (although I do a rear turbo wastegate conversion also now) Reason for this is to get rid of restrictor plate and allow the best flowing exhaust downpipe ect possible So my cast merge is replaced with a 6”across fabricated unit with a 4” downpipe I decided to test this arrangement with simple stock size inconel turbine ct20’s (hybrid) and made 540 at 1.4 1.4 is a fairly safe level of boost and the turbos are working more efficiently along with the engines hotside flowing far better Stock cams vpower and just a sard ecu and uprated pump/injectors The cast manifold is massively restrictive and only really designed to flow 400 The biggest restriction on the stock twin setup is the exhaust Y peice on a jap spec and having to run a restrictor plate I will be running some highflow hybrids for shits n giggles later this year So my advice, from facts not wives tales - bigger turbos flow more efficiently, tubular manifolds often used to support big single turbos flow more efficiently, a well spec’d volume and design tubular manifold coupled a correctly spec’d turbo hotside for desired hp and response required will always be better than a restrictive cast manifold and two small turbos Think of it this way, if you had a big single turbo with tubular manifold and a stock twin with cast manifold and you blanked off the hotside snail castings so exhaust passed thru and into the downpipe with no turbine present, the engine with the cast manifold and two small turbos would far more restriction This is still relevant when turbocharging an engine, mr T designed the lovely sequential to run circa 330 fwhp remember So, if you have an ecu and fuelling done already and fancy staying twin ct20 configuration then go with some upgrades, breathing and hotside and either a turbo refresh with inconel turbines or maybe larger compressors Or save your money and go big single and be able to run more power more reliably

Message sent about dead turbos, possibly grab them at ace cafe meet?

That’s pretty much spot on dunk

1. Shane - M240UKN 2. Paul 887 - P768AWY 3. MattDavies - M7DXX 4. Mplavery. N10SUP 5. ripped_fear K84 YHG 6. Mellonman - N941NGT 7.Trevor : L192WPX 8. Andrew K - L474 NMJ 9. X13MGR — N482SVY 10. Shane34 - L668LHN 11. J-Meiser - L178 YNV 12. Bayside_supra K55UPE 13. Pulley - L954 SGW I’ll be there if I’m able

Car looks stunning! Love the engine bay, the polished aluminium and white really pops The turret tops really suit it

This is typically a fantastic build from lee,Srd I love the engine bay, so clean and attention to detail Top job!

Thanks matey I enjoy making stuff for my supra

Divided 6262 or similar Streetable power quick spooling I'm not looking to break barriers with bhp levels, just have fast responsive usable power

Cheers james, your parts are looking sexy mate

Got them all powdercoated, stripped the tb

Trimmed the side sections and changed the mounting hardware/fixture type , not much tbh james as they were well made which is why I bought them from srd rather than template and fabricate them myself (being lazy) I'd say the srd ones off-the-shelf are spot on, I would recommend buying them powdercoated though (I fitted mine, then removed, powder coated them)

My favourite job! Love them shorts

Refurbed my tb and plenum/runners and injectors, added my own badge sticker too which I think looks cool Fitted my slightly modded SRD undertrays that I powdercoated black Made mounting brackets and fitted the mishi intercooler, fabricated the pipework ect Also mishi radiator as stock one was looking out of place lol Refurbed and welded an fittings to my cam covers to go with my catch can