Barts 1973 LJ Torana VH41 Twin turbo project

Discuss topics related to the VH41DE, VH45DE, VK45DE, and VK56DE engines.
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Bart
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Joined: Mon Jul 28, 2003 5:13 pm

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Hey Guys, i have just noticed a hose has come off and sucking air. Does anyone know where it goes?Its a JDM VH41 motor

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Mettler
Posts: 1445
Joined: Sun Jan 15, 2006 4:05 pm
Car: HR31 GTS-8 coupe, VH41/45 Hybrid Transplant

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Factory carbon canister I believe... I'll check it out for you properly if it doesn't turn out to be that.
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Bart
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Thanks mate that would be greatMaybe i can plumb it back into the intake? As i have no canister
Modified by Bart at 2:13 AM 10/27/2009
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Mettler
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Car: HR31 GTS-8 coupe, VH41/45 Hybrid Transplant

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I just checked out an old pic of a cima engine bay and can confirm that it does go to the carbon canister... and I'm pretty sure that they're under vacuum from the intake to keep the system closed loop.
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Bart
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Thanks Mettler for taking the time to check for me.So i guess i can just block it off?Or plumb it back into the intake?Im guessing block it.
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Kirby260
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Joined: Mon May 15, 2006 2:51 am
Car: Datsun 260z

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Hey Bart,

Checked one of my engines, line plumbs into the intake already behind the throttle. Just block it off. The little green solenoid next to it is the lift solenoid for the carbon canister.
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Bart
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Thanks guys
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Mettler
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Car: HR31 GTS-8 coupe, VH41/45 Hybrid Transplant

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Oh you meant the other one lol, my bad!
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Bart
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Hey guys, im trying to do a rough tune on my engine VH41 trubo, just need to know what the fuel pressure should be at the regulator while the ignition is turned on with fuel pump activated (just before starting engine) and fuel pressure while idling/engine running.ThanksBart
Modified by Bart at 12:40 AM 11/5/2009
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DrifterProdigy85
Posts: 1817
Joined: Sat Jul 02, 2005 7:42 pm
Car: 1989 Nissan 240sx (Zenki Onevia)

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Should be around 43-45psi w/o vacuum when idling. Ive found fuel pressure is higher when the engine is cold. I always take a quick drive then set according.
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Bart
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Thanks mate it works fine on 43psi.
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DrifterProdigy85
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Car: 1989 Nissan 240sx (Zenki Onevia)

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So whats your HP goal with the car? You think youll find any restrictions with stock cams and intake manifold? I cant wait to see the tq numbers since this is something im really looking into doing for my 240sx except using a VH45 and twin 60-1's.
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Bart
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Im not expecting big numbers but i would be happy with 450hp.Its on 5 psi boost and has log style exhaust manifolds which are inherently restrictive. So 450 would be ok as a start.Later i would go for bigger injectors, custom inlet manifold, and extractor style exhaust manifolds.
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DrifterProdigy85
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Car: 1989 Nissan 240sx (Zenki Onevia)

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Any updates?
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Bart
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No there wont be too many updates for a while. Trying to save cash
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justinedible4
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Man I just read through your whole build, and I have to say, that you sir are one talented son of a b****. Your work is inspiring and I hope to one day be able to do the things you do. Thanks man for being an inspiration to all of us.
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Bart
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Thanks justinedible4I have been inspired by many others here and elsewhere, but to inspire others like your self is a great feeling. I’m glad I have achieved such a great thing which is inspiration. Thank you.
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imackz
Posts: 11
Joined: Wed Jun 04, 2008 3:08 pm
Car: 280zx

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Hope your build is all going to plan,Would love to see the Vh41 powered torana in street machine magazine or the like. Did you have much drama rewiring the loom?Regards
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Bart
Posts: 394
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Thanks mateYeah I'm having some issues with the fuel pump in the boot getting hot. I’m going to use a cooling fan and duct it through the boot floor and suck the heat out, the boot is enclosed and allot of the fuel re circulates from the fuel rail (which is hot) back to the surge tank and so the fuel heats up and heats the pump up. It’s not quite good enough for Street Machine, the body and paint is quite rough, 36 years old but it is rust free.When I get some body work done and paint who knows.At the moment to aim is to get a good tune, wheel alignment and a new fuel sender lol don’t know how much fuel is in there.
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Chrispy300
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Car: 1993 J-Spec 300ZX 5 Speed Slicktop
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I've seen some of the Skyline guys who run 3 044's and the like run a small oil cooler out the front to cool the fuel from the return line. It seems to keep the fuel temp in check.
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Bart
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Yep i got an oil cooler for the fuel but its mounted under the car near the tank. This has made a difference but the pump still gets hot, but not quite as bad. I will still go with the fan and ducting for insurance.
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OutToWinPAHC
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Dude.... updates
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Bart
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OutToWinPAHC wrote:Dude.... updates
Sorry mate i havnt done much but will get back on it soonish.
Just bought 2 turbo shields DEI titanium, i believe the turbos was causing the hot fuel pump issue, i noticed the rubber suspension bushes are getting burnt also so this shows it is a heat issue from the turbos which is heating the fuel line and pump.
Last edited by Bart on Sun Mar 13, 2011 4:30 am, edited 1 time in total.
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theramz
Posts: 31
Joined: Tue Jan 04, 2011 9:43 pm
Car: 1995 q45
1970 240z

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Man, your a hell of a fabricator! I love your ideas too especially the alternative oil pick up, I might want to use that on my 240z/VH45. Thanks!
By the way are you going to change the compression ratio for the turbos?
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Bart
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theramz wrote:Man, your a hell of a fabricator! I love your ideas too especially the alternative oil pick up, I might want to use that on my 240z/VH45. Thanks!
By the way are you going to change the compression ratio for the turbos?
Thanks mate, the comp will stay as is.
You should use steel tube for your pickup if you can, i will be changing mine to steel as soon as i get a chance.
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audtatious
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Good work Bart. What's the next steps?
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Bart
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Also bought a Bosch fule pump as the Edelbrock internals got chewed out from the heat and stavation, mostly starvation as the pull up pump didnt keep up with the Edelbrock EFI pump. So plumbed the return line back to the surge tank so the EFI pump wont starve but this has made the heat issue worse, as mention got the heat shileds will be on soon. I will let you know how it goes as its good info for anyone who has the same prob.
Also bought another fuel pump 1000hp rated (thinking of the future) A1000 Aeromotive

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brodski07
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Joined: Wed Oct 10, 2012 1:53 am
Location: australia

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awesome project man love your skills.
excellent craftsmanship. must've taken hours to do those panels.
how did you do the sill end panel so easily?
i have been at this for almost 3 weeks now and still failing to get the bend right.
im starting from scratch with a piece of sheet metal. nothing ive done looks anywhere near as good.
love the break set up too how does it work exactly?
your rims look fairly modern. are they torana stud pattern? or have you changed your hubs?
keep up the good work man.
any more progress as yet?
Cheers brodie
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Bart
Posts: 394
Joined: Mon Jul 28, 2003 5:13 pm

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Thanks mate
You can buy the sill panels with the rounded ends if you like, i see if i got more pics on the ones i did.
The brake booster is in the boot and that is acuated by a brake master.
Rims are wlakinshaw with HQ atthe front and commodore at the back but i dont recommend HQ and Commo as studs can break off.
I havent worked on it for 2 yeara but will get back into it next year
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Bart
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