swe_crazy
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Posts posted by swe_crazy
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Got a bit done today, weeee!
Tore down most of the engine. Useless pictures, I know, I use a mobile phone
Remove header and took the opportunity to wrap the header, the first and last time I do it. Much work and very itchy ...
polished the intake
Header mounted on the engine ...
Intake fit was not perfect, grind a little here and there ...
I'll make new washers for the header and intake manifold, different height of header and manifold ...
Will try to make new washers tomorrow and reassemble the rest.
Will also mount radiator hoses..
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Thats really cool the way u put the hood emblem as the horn button . Looks great . Are u planing to turbo the Holley set up .
I've had thoughts about it, yes
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Nice Z. What do you think of each setup that's been on the car?
Well, Stromberg carburetors are much like su carburetor, easy to sync.
A su carb with turbo, very hard to sync, and carburetor is too small. Would probably work better with a weber.
Dellorto 40 carburettors, very nice carburetor. but would recommend weber but only because it's easier to get parts etc.. I love the sound of Dellortorna
Holley 390cfm .... have not tested it yet, but soon soon
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The car's engine has been tested with different "rigs"
1st Stromberg carburettor x 2
2nd Su carb with turbo
3rd Dellorto 40 x 3
And now the Holley 390cfm, are still working on it
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Here is my Datsun 260Z 74 (early). Found it in a garage where it stood at least 12 years.
Here are some pictures.
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Not a very common setup in the states, but you'd see the triples w/ turbo tanks in Japan.
There are several members her that have done a triples setup recently.
I've sold a several "SK" type-1 tanks in the last few years.
Sounds interesting
, have you any pictures? -
I still do not know who the manufacturer is,
but an interesting setup.
You can find more pictures here.
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Turbo-carb versions... Have found a lot on this subject but not so many pictures of this.
Want to see photos of what you have under the hood.
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update??? pics
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Search on google pics, "vacuum lines datsun 240z".
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Here you have some pics
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Still working on it
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WOW thats almost my current setup. I don't have an innercooler insstalled yet. I would like to know about your friends carb
Only if you post more pics of your engine:twisted:. The onely thing I know about the carb is that it was rebuild in USA to suit his engine. Damn hard to type in English sorry:). Have more pics of the car if you guys/girls want to see it?
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No offense, dude, but this is NOT your setup, and 'tuning' this is a BEAR! It's nothing as simple as on a Holley when you simply change jets. This setup will require micrometers, hand filing on parts, and HOURS of runs to get a fuel curve somewhat proper.
As for drawthroughs being hard on the compressor side due to impingement, quit repeating articles! The Rayjay is a WET TURBO, it was DESIGNED as a drawthrough setup, as almost EVERY system at the time was, they will work about 75,000 miles if you are lucky, and at that time you will be out of bearing and need a bearing replacement. I have put probably three bearing kits in my Rajay over the years, and the wheel is still in balance and looks perfect. And that is after probably 50,000 miles of not only having fuel impinging on the impeller, but large water and water/methanol being sprayed directly into the turbo inlet via a Spearco Water Injection kit. Repeating myths and legends doesn't help anybody, please refrain from it. This system is so far afield from what your setup is, outside of the fact that they both employ turbochargers, so as to be unrelated. Experience in one really has nothing to do with the other, they are that different an animal!
The ONLY thing that makes it passable is the thing he's asking about, which is a BOOST RESTRICTION DEVICE (I want to call it an Impco Boost Controller, but I forget the exact name they used back then...) This is what they used in the dark days before watesgates in addition to inlet and exhaust restriction. The Rajay will make 17-22 psi if the exhaust is leaking or low restriction (the muffler plays a part on this system), and the device in question will limit the boost available to the manifold by moving the internal shuttle to restrict flow. If you're muffler or headpipe should rust and fall off, this device will have you going SLAM SLAM SLAM on a compressor surge all the way up to redline once you get into the top of second, or around 3500rpms in third gear under WOT. This is why Rajay replacement center cartridges were doing such brisk business.
Without this device, which is the ONLY thing that makes running that small SU workable on this engine. It limits the boost, and thereby the fuel requirements. If this was the original Crown Style kit, you would play hell with a too small main jet and have to blunt-cut the needle in the SU to get enough fuel flow into the engine---and even then you will run short aroudn 15psi, and need anti-detonant to keep the engine together as the boost climbs (unrestricted, remember no wastegate on those AT ALL!) to around 22psi.
I can't tell if you have a Z SU, or one from a Jag (2" or larger). The Jag's have a 1.25" main jet which makes fuel delivery less of a problem, but if it's the 0.100" jet from the stock Z SU, you will have issues getting enough fuel through it, even with a variable delivery fuel system that will raise the fuel in the float bowl.
My suggestion would be to keep your Dellortos, rework the turbo adapter to put the Rayjay down lower, and get a pressure plenum for them instead. The drivability (especially cold) will be far better. You will find the response of the system will e LOADS better if you rework the turbo adapter to incorporate a wastegate (easily available from E-Bay these days) and run a proper wastegate to limit the RayJay's terminal boost, and then remove that damnable restrictor and put a Crown-Style adapater, or simply make an adapter to blow into where the restrictor formerly was.
The RayJay is oversized for the engine, and the boost response is not all that great. It is not uncommon even on WOT that the engine won't make any boost at all in first gear, and you might get some at the top of second gear. By third you will start getting decent boost, and in fourth I will make boost at highway speeds fairly easily. The compressor map on this turbo is pretty horrendous, and ultimately it's really only designed to support between 180 and 200 HP, but then it's at pretty high flows. The technology that had those wheels made was based on stuff done in the 1960's, and there are really much better alternatives.
If you are putting together a 'period correct' accessory car, something with all the goodies from some time period like it was frozen in time...this is something to install. It's a nice curio, but there are FAR better ways to accomplish turbocharging a car these days. There is a reason this system was removed from whatever it was installed...
Man, I haven't seen one of those damnable boost-restrictor things for 25+ years! It was a horrendous and terrible way to accomplish the goal of boost control. Seriously, unless you are willing to spend some money to get some proper technology to make that system work properly, I'd put it on a shelf and say 'hey look at this cool stuff I got!' That's where most of my Crown and Rajay Stuff is these days. (Shudder) I lived through that stuff when it was NEW, I can't imagine what it will be like trying to get it all working again now that it's got thousands of miles of roadwear on it!
I`ts on a shelf now
. Looking after a better turbo setup. -
Maby get a 4 Barrel Aluminum Intake Manifold from arizonazcar and a Holley 390 cfm. Could that be a good start?
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Maybe something similar to this set up would work better. My friends Datsun:).
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It's not really a Rayjay kit, that's only the turbo it comes with...
I'm thinking it may be an early BAE or possibly a Janspeed kit out of Holland.
It's not a Crown, for sure.
BAE and Janspeed liked those early boost restrictors. Hell, some of the EFI BAE setups used similar things! (Shudder.)
Its not a Janspeed kit. Would be fun to know what it is...
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Personaly I'd rebuild/refresh and install the kit on a Z just for historys sake. Not a daily driver but mabe a weekend toy.
Swe how did you come across this anyway? I see you live in Sweeden. E-bay find?
Not a E-bay find, got it from a Norwegian guy.
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thx for the help. Have a engine standing and will try the kit...could be fun:mrgreen:
My setup now
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more pics...
And what is this?
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Trying to find out who maked this turbo kit. Can someone here help me?.
// Johan
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swe
hey brother. Ever think about getting that grill anodized gunmetal or black. That would make it look awesome. Just a suggestion.
There will be some changes on my front. Did start this thread to get some ideas.
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This one looks quite functional
Sorry you`we got it the wrong way. In Sweden we have a huge nuisance called polar bears and as you know all animals, but polar bears in particular, are attracted to the sweet smell of glycol. In order to keep them from thrashing the radiator you have to use some heavy equipment to hold them back.
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Here is my:)
, have you any pictures?
. Looking after a better turbo setup.
Datsun 260z 74 (early)
in S30 Series - 240z, 260z, 280z
Posted