Guishnu wrote:[*]Polished and finished head (looks pretty good as is)
Port matching is poor from the factory. My heads have had this done. Including the throttle body to plenum.Quote »[*]Re -profiled cams (256- in 256 out)[/quote]Standard they are 248 so depending on opening and closing angles (ill assume 4 earlier and close 4 later ... you'll have closing at 72 ABDC and 52 ABDC (vvt)... so 9.0:1 static and 20psi will be a piece of cake ...Quote »[*]After market or stiffer valve springs[/quote]Cant know for sure but i'd say you will definately need a different set of springs for 20psi ...
http://www.performancesprings.com.auQuote »[*]Ferriday copper (ringed) head gaskets[/quote]Nizpro run factory head gaskets on their near 1000 hp race boat ... otherwise ACL in QLD australia make triple layer metal gaskets with fire rings (3 different thicknesses available) ... i have a set of these however i'm running the factory head gaskets to begin withQuote »[*]Dished, forged pistons[/quote]drift car so will cop alot of abuse im guessing so it would be wise ...Quote »[*]Aftermarket con rods[/quote]there are sr20's making 400rwhp with standard conrods so i cant see 800rwhp being a problem for the vh45 conrods ... in saying that ... im only going for 600rwhp on pump fuel and i havent changed the conrods. If you must ... the best has to be ARGO. Once again ... made in australia ... morpeth actually ... about 20 minutes from my houseQuote »[*]New bearings, seals etc[/quote]Check grades ... and check grades again ... this was a pain in the arse!! definately change bearings though!!!!Quote »[*]Custom- twin inlet plenums[/quote]I'm running factory plenum. but 2 would be easier for twin turbo!Quote »[*]Twin VH45DE throttle bodies[/quote]Good idea. The standard one is too small for turbocharged applications. I have 2 throttle bodies just have to get a y-pipe made off the plenum.Quote »[*]Twin SARD Fuel Rails[/quote]i'd assume you'll need 2 CUSTOM fuel rails ... but i doubt its needed ... just get bigger fittings on the standard rails.Quote »[*]SARD 850cc Injectors[/quote]I run these. Top choice!Quote »[*]Custom exhaust manifolds (T25 flange)[/quote]T3 flange would be my choiceQuote »[*]Twin Garrett GT2835R Turbo's[/quote]i'm unfamiliar with this turbo. If it is a 2871R of some sort ... i think its too small ... well ... for 800rwhpQuote »[*]HKS External wastegates with screamer pipes[/quote]2 x Tial 44 mm external gates will do the job Quote »From what i have read, cooling could be a big issue with this engine. So i propose running:[*] Twin Setrab 260mm oil coolers with Spal fans[*] RB25DET (R33 Skyline) Koyo Alloy Radiator (with twin spal fans)[*] Transmission cooler (another Setrab item)[*] Fuel cooler (a mocal jobbie)Any other ideas?[/quote]Electric water pump ... or 2 ... with controller
Quote »Not quite sure how to setup the intercooler etc. With two turbos and two plenums. Is it worth while using two intercoolers? Or am i just adding weight... Opinions?[/quote]run what the 300zx's run if you are going to run 2 plenums. ie. 2 in 2 out (right bank turbo feeds left plenum) ... if you are going to run single plenum ... have an intercooler with 2 inlets and 1 outlet or 1 inlet 1 outlet like mine and you just y-pipe the first intercooler pipe
Quote »Fuel System:[*] Twin bosch fuel pumps[*] Forge Motorsport Twin swirl pots with [*] Walbro Scavenger pumps[*] Forge Motorsport Fuel Cell[/list]Bosch 044's will be needed ... 2 of them
Apart from the obvious engine mangement issue. Have i missed anything vital? Or does anybody have any feedback/input etc?
What ecu are you going to use?
You may need a CDI also ... or spitfire coils ... depending on the comp you run
Quote »Im shooting for 800whp with a 9.1 compression ratio. My theory is that if an SR canrun 400whp easily with a 9.1 compression rato at 1.2 bar of boost, then a VH should be able to do 800whp at well under 1.5 bar.
Or am i living in la la land [/quote]what RON/MON fuel??
So 20psi roughly for 800rwhp ...
I'd be looking at 2 x GT3582R's ... and even then i think you're going to struggle to make 1000 flywheel hp @ 20psi ... 950 ish would be my guess ...
I'm talking 98 RON fuel though ...
And with those turbo's ... my guess at your power curve will be this (engine kw)
2000 rpm - 75 kw3000 rpm - 150 kw4000 rpm - 215 kw NOTE THE DIFFERENT BETWEEN THIS ONE5000 rpm - 620 kw AND THIS ONE6000 rpm - 695 kw7000 rpm - 720 kw8000 rpm - 680 kw
Now no offence but UK dyno's are a joke ... so you can pretty much say those flywheel figures will be what a dyno says you have at the wheels