rajay turbo help
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rajay turbo help
I have a rajay turbo that I am trying to identify. I thought I would ask here since there seems to be a ton of turbo knowledge here. I just bought a sand rail and it has a turbo set up. This is my first forced induction motor. I have had several vw performance engines but none turbo, so go easy on me. Right now i am trying to get some info about the turbo I have. It is a rajay model number 3AP1EE80B1 part number 600586-66.
The engine is a 2180 draw through, cb044 heads, autocraft 4.1's, dcoe 45 weber, I will get cam and CR when I get the motor out.
Thanks for all of your help,
Keith
The engine is a 2180 draw through, cb044 heads, autocraft 4.1's, dcoe 45 weber, I will get cam and CR when I get the motor out.
Thanks for all of your help,
Keith
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Re: rajay turbo help
how about a pic of the turbo.
It could be a Corvair turbo......If I remember Miniman talking about the Rayjay being stock on them.
Corvairs did run a draw through system.
It could be a Corvair turbo......If I remember Miniman talking about the Rayjay being stock on them.
Corvairs did run a draw through system.
Stripped66 wrote:The point wasn't to argue air temps with the current world record holder, but to dispel the claim that the K03 is wrapped up at 150 HP. It's not.
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Re: rajay turbo help
Corvairs never used Rajay turbochargers on them from the factory, back then the manufacture was TRW (splitting hairs I know, but it's true). Rajay bought the rights later on, changed a few things through the years, and kept on making them. I use the term 'Rajay' colloquially, because I don't like going into a diatribe about the differences between them online- guess I'm going to anyway though. lol
To the lay person they look basically the same, but they are not. If you really want to know the differences, I'll have the next version of Rajay Primer out on the streets soon. It goes into great detail about the generational changes the unit went through during its life.
OP: if it really is an E80 Rajay, it's gonna be laggy as all hell. An E turbine is far too large for a 2180, unless you're talking all our drag racing and high RPM. Even then, I can't imagine it works very well on an engine that small. Normally the E turbine and 1.0 housing are specified as a single turbo for V8 engines, for comparison.
DISCLAIMER!
Rajays were mixed and matched through the years by people, because many of the parts are interchangeable. Just because it has an ID tag on it doesn't mean that's what it really is- I.E. it might have been an E80 at one point, till someone swapped an F turbine into it. At that point it technically became an EFxx (where E is the compressor size, F is the turbine size and xx is the A/R of the turbine housing), regardless of what the tag still says. There are only 3 sizes of turbine and compressor wheel: B, F and E, going from smallest to largest. There was only ever one A/R compressor housing regardless of compressor wheel used, which is why they only quote the turbine housing A/R, which did come in quite an array of sizes.
Take pictures of it and post them up, I'll be able to tell you what you have just by looking. I need a view of the compressor inlet and turbine outlet to be sure, use a flash if you have to because sometimes the turbine will be all dark with carbon deposits.
If you need anything changed on it to suit your needs, I do mods to them. I have all sizes of compressor and turbine wheel in stock, as well as the housings. I can build it to suit your needs, just ask.
To the lay person they look basically the same, but they are not. If you really want to know the differences, I'll have the next version of Rajay Primer out on the streets soon. It goes into great detail about the generational changes the unit went through during its life.
OP: if it really is an E80 Rajay, it's gonna be laggy as all hell. An E turbine is far too large for a 2180, unless you're talking all our drag racing and high RPM. Even then, I can't imagine it works very well on an engine that small. Normally the E turbine and 1.0 housing are specified as a single turbo for V8 engines, for comparison.
DISCLAIMER!
Rajays were mixed and matched through the years by people, because many of the parts are interchangeable. Just because it has an ID tag on it doesn't mean that's what it really is- I.E. it might have been an E80 at one point, till someone swapped an F turbine into it. At that point it technically became an EFxx (where E is the compressor size, F is the turbine size and xx is the A/R of the turbine housing), regardless of what the tag still says. There are only 3 sizes of turbine and compressor wheel: B, F and E, going from smallest to largest. There was only ever one A/R compressor housing regardless of compressor wheel used, which is why they only quote the turbine housing A/R, which did come in quite an array of sizes.
Take pictures of it and post them up, I'll be able to tell you what you have just by looking. I need a view of the compressor inlet and turbine outlet to be sure, use a flash if you have to because sometimes the turbine will be all dark with carbon deposits.
If you need anything changed on it to suit your needs, I do mods to them. I have all sizes of compressor and turbine wheel in stock, as well as the housings. I can build it to suit your needs, just ask.
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Re: rajay turbo help
Thanks for the reply's. I will take a few pics of it when I get it out. It is in a mazzone mid engine san rail. The guy I bought the car from had the turbo rebuilt a few months back. He gave me all of the paper work. The motor seems to pull hard once it finally gets in boost, until then it is a dog. I haven't looked in the carb yet to see what jets are in there. The timing at 24 deg and distributor is locked.
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Re: rajay turbo help
Okay an update on what I have looked at and seen. I haven't pulled the motor yet, probably won't get it pulled until the first of May. So not sure on cam or valve sizes yet. Took a few pics but having trouble loading them. There is a stamped 142 where the exhaust and turbo bolt together. I pulled the intake and measured the compressor wheel at 52mm. The turbo is just rebuilt. The motor starts but won't idle. If I pump the throttle it will stay running. But if I stop it will die. I have a msd distributor locked at 24*. I pulled the jets to see what was there. The carb is a dcoe 45. I set the float level at 9mm.
36 vents
200 air correction
45 pump
55 f8 idle
One 190 main and one 200
Emulsion tubes f16
Needle valve 200
Keith
36 vents
200 air correction
45 pump
55 f8 idle
One 190 main and one 200
Emulsion tubes f16
Needle valve 200
Keith
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Re: rajay turbo help
I have a few more questions, maybe someone can help.
I have a Holley red fuel pump and Holley regulator. The regulator has been drilled and tapped in the top. It has a line from the intake manifold to the top of the regulator. In line is a check valve. I understand the purpose of the line and set up, but when you put boost into the top of the regulator and then get off of boost, how does the pressure in the top of the regulator come back down to normal? The check valve stops it?
Also does it make a difference on what side valve cover I drain the oil from the turbo into? Right now it is on the 3 / 4 side. Can I move it to the 1 / 2 side?
Thanks for all off the help.
I have a Holley red fuel pump and Holley regulator. The regulator has been drilled and tapped in the top. It has a line from the intake manifold to the top of the regulator. In line is a check valve. I understand the purpose of the line and set up, but when you put boost into the top of the regulator and then get off of boost, how does the pressure in the top of the regulator come back down to normal? The check valve stops it?
Also does it make a difference on what side valve cover I drain the oil from the turbo into? Right now it is on the 3 / 4 side. Can I move it to the 1 / 2 side?
Thanks for all off the help.
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Re: rajay turbo help
I understand the purpose of the line and set up, but when you put boost into the top of the regulator and then get off of boost, how does the pressure in the top of the regulator come back down to normal? The check valve stops it?
If it's the original round Holley top, remove adjuster screw to reveal a bleed channel on top of housing. If you have Car Craft rectangular housing there is bleed hole on back of housing.
If it's the original round Holley top, remove adjuster screw to reveal a bleed channel on top of housing. If you have Car Craft rectangular housing there is bleed hole on back of housing.
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Re: rajay turbo help
Probably has plugged idle jets, clean 'em out and try again.
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Re: rajay turbo help
The check valve stops vacuum.rs58rag wrote:I understand the purpose of the line and set up, but when you put boost into the top of the regulator and then get off of boost, how does the pressure in the top of the regulator come back down to normal? The check valve stops it?
If it's the original round Holley top, remove adjuster screw to reveal a bleed channel on top of housing. If you have Car Craft rectangular housing there is bleed hole on back of housing.
There also has to be a tiny leak to atmosphere for it to work.
(the purpose of the bleed hole referred to above)
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
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Re: rajay turbo help
Thanks for the replies. I looked at the regulator a little closer today and noticed there is a small groove filed into the body where the adjustment lock nut seats. I haven't checked yet but it might be bleeding pressure there.
The jets are all clean. I thought that they could be plugged too, so I pulled them out.
Not sure I like the locked distributor. Thinking I might try the cb digital magnaspark. Any thoughts?
The jets are all clean. I thought that they could be plugged too, so I pulled them out.
Not sure I like the locked distributor. Thinking I might try the cb digital magnaspark. Any thoughts?
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Re: rajay turbo help
No such thing as a 52mm Rajay compressor wheel, so either you measured incorrectly or it's got a non-stock compressor wheel in it. Can you post a pick down the intake throat of the turbo? I strongly suspect it's an E flow, but can't confirm without seeing. There are only 3 sizes of genuine Rajay compressor wheel:
B flow= 1.6" (41mm)
F flow= 1.83" (46mm)
E flow= 2.25" (57mm)
^ those are compressor inducer sizes, all the compressors have a 3" outside diameter.
Looks like a well set up engine, the no-idle symptom is probably something really basic like incorrect fuel pressure of wrong float height. Or ignition issues. DCOE's are pretty solid as carbs go, I never had a single problem with mine. They do have some o-rings that can dry up and leak on you, but other than that no issues.
B flow= 1.6" (41mm)
F flow= 1.83" (46mm)
E flow= 2.25" (57mm)
^ those are compressor inducer sizes, all the compressors have a 3" outside diameter.
Looks like a well set up engine, the no-idle symptom is probably something really basic like incorrect fuel pressure of wrong float height. Or ignition issues. DCOE's are pretty solid as carbs go, I never had a single problem with mine. They do have some o-rings that can dry up and leak on you, but other than that no issues.
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Re: rajay turbo help
As I suspected, you have an E-flow Rajay which is good. You can do up to 16 psi or so with that, more with water injection. I think I set my fuel pressure to like 2 or 2.5, but it's been a while. If it's not the idle jets, you probably have either a fuel supply or ignition timing issue. What's idle timing?
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Re: rajay turbo help
Thanks for all of the help and info. It has been a huge help. For this build I have decided to go with the trusty old 48 IDA's.