blue_leaf
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Posts posted by blue_leaf
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Great design! What sort of program did you use to draw that up?
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Thanks for your replies people - its is already becoming more clear...
But what does 304 and 321 stand for in materials? What is standard wall thickness for street NA and turbo manifolds? Would 16 ton pipe bender be enough to bend mild/stainless steel and inconel?
PS and no I am not planning on using titanium
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Any tips or tricks to this - I am having real trouble with polishing in between and inside letter (like inside "o" etc)?
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Will both the stainless steel and mild steel be suitable? What are the other chatracteristics that I should consider when purcahsing tubing for fabrication of custom exhaust manifold? Are the same materials used for turbo exhaust manifolds manufacture as the manifolds for NA cars?
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Any more pics... I would have imagined tha more people here have custom/aftermarket manifolds?
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Just curious what exhaust manifold people are using, so post up your pics...
Interested in manifolds for all engines - just wanna see different designs...
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Well I read somewhere that a standard 240z has a weight distribution of 51:49 - almost perfect. Now consider a 240z with an sr20det in it - being a 4 cylinder (will seart completely behind the front axle) and having an all alloy design (meaning its lighter) it will alter the weight distribution significantly and from what I can see this alteration will make the car rear heavy, which in turn will lead to fun but not a very efficient handling dynamics on the racetrack.... On the other hand I keep hearing that 240Zs with SRs have great handling, could someone please explain to me how that works?
While I understand that its possible to cancel some of the rear-heavy effect through proper suspemsion setup, wouldnt it still be better to have close to 50:50 weight destribution?
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nope i sure dont.. sure wish i did.
there at my friends shop along with my Work Equip 01's.
if i end up selling the blue Z i dunno what ill do with them' date=' maybe keep them for the silver Z but i doubt it.
check in in the next few months i hope to have money for tires, ZG flares, and so much more if i end up keeping the blue Z.
mike[/quote']
Wouldnt they stick out a fair bit at the back being 11 inch wide, as I thought 9.5 fitted just right? Not trying to argue with you, just trying to clear this up for myself.
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i got some 17x11 and 17x9 TE37's made up for my blue Z.
bronze too
mike
Got any pics of them on the car? And what flares are you panning on using?
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Any one have pictures of that car? I really want to see how the te37 looked on a Z.
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L Series Turbo manifold in Melbourne Australia for $100.00 so far.
Ebay item # 4635414465
Cheers' date='
Dennis[/quote']
Thanks Dennis. Thats tempting but I have decided to leave the idea of turborcharging for a while - have to finish the bodywork first and see how much I have left:)
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Picked up the turbo yesterday.
Its got 4 pipes coming off the center' date=' so i guess its water cooled (2 oil, 2 water).
Now I need an L28ET exhaust manifold to bolt it too.[/quote']
Please tell us when you find one and for how much; I am looking for one too.
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John' date='
The L28ET & L20ET exhaust manifolds are both identical, likewise with both inlet manifolds. The diference is the throttle body sizing.
The L20ET has a very tiny 50mm or there abouts, the Jap Spec L28ET has a dual stage (twin butterfly) throttle body.
I have the Jap spec inlet manifold & throttle body, that I'm going to try first, I also have 65mm throttle bodies from KA24E & RB25DE for later.
The Z31 VG30 Turbo is ball bearing, but only ceramic, but I cant see a great problem with that if you keep the boost down. They flow probably 30% more air at the same psi as the older style T03. A very good VG30 Turbo will set you back about AU$350.00 as opposed to about AU$2000.00 for something like a Garrett GT30R.
I was lucky for the parts, I bought a complete L28ET engine, but it is n/a and the guy spent over AU$7000 on it about 80K ago. It has been fully balanced and internally was near perfect, no lip on the bore, so I am having the bores honed, HPC the piston crowns and skirts and putting it back together as is with new rings & bearings. The head has had a mild port and polish done (just removed the rough bits) As I already had a spare L20ET exhaust manifold, now black HPC coated, I will nearly get it assembled without having to touch the original engine, except at the very end.
At the end of the day, how much HP are you looking for, and or what can you use. I have a mate in South Oz that has 195Kw at the wheels in an MR30 sedan and he can break traction in the first 3 gears without really trying.
The 1.0mm pistons means 1.0mm (0.040) oversize which converts to an 87mm in the F54 L28ET block. The pistons are cast I think, but if you ask some questions about pistons on here, most of the guys will tell you they are up to the task if staying under a bar of boost. Forged pistons really only come into their own when using big boost numbers of 20+ psi.
When I started looking, Hornsby/Asquith Nissan Wreckers wanted about $2500.00 for a complete Jap spec L28ET engine. Z Classic wanted $1200 just for the top end without manifolds, yet I was lucky enough to find what I did for $450.00 plus $190 freight from Lismore to Sydney.
The big question is what are you putting it in, because if it's not a 280Z there may be conversion costs involved as you might need a diferent sump position.
Cheers,
Dennis[/quote']
So you got turbo prepd engine for $490? If so - thats really unbelievable. So do you have a spare turbo exhaust manifold left now? Also what head is that engine using? What sort of engine managment system are you planning to run, or are you going to use carbs?
I am planning to put the engine into a 240z and at the moment I have a F54 block with an E30 head on it and standard fuel injection system - so have a long way to go before I have all the needed parts for turbocharging.
Thanks for the pointer to VG30 turbo - sounds as a good idea, but I am still concerned that it might be hard to find one in reasonable condition...
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I chose to go with an F54 block' date=' P90 head, plus 1.0mm flat top pistons (8.7:1) @ 2818cc, Z31 VG30 BB Turbo on stock L28ET exhaust manifold, L28ET inlet manifold, stock L28ET cam and with 14 psi, I expect better than 300HP at the wheels. The 8.7:1 compression will give excellent low down torque and staying under a bar of boost, some reliability can be achieved.
[/quote']
I was myself considering using the ld28t exhaust manifold and l28e intake manifold with larger throttle body and a P90 head. The turbo - I have not decided yet, but I was planning on using a modern one that is ball bearing type with steel compressor wheel.
So where did you get or are plannning to get those parts - from US? How much will it approximately cost? And what does the 1.0mm stand for in piston description - is it the piston diameter increase? Are you getting those forged?
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^^^Yeah I heard those cranks are expensive - but still thought I will give it a try - you never know what you might find in the wrecking yards...
I am actually planning to go down the turborcharged path as well and was thinking about usinf the ld28t exhaust manifold. I am sure it will provide great low down torque, but I am slightly concerned its high RPM flow capabilities - has anyone used those manifolds succesfully?
Btw did maximas come out with both ld28 turbo and non-turbo? Were all the patrols with ld28 turbocharged?
What exhaust manifold are you planning on using Dennis? What about you Dave - what manifold did you use?
John.
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I know they were used in 80s patrols but could someone specify the exact time period? Any other cars it was used in?
Thank you in advance.
Turbo header theroy help
in Nissan L6 Forum
Posted
Could you please explain in more detail how can you match cam profile to exhaust manifold style as I dont have the book?