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Hi I’m new to rx7s and rotaries. Bought one a while back with an unknown turbo. Here is a pic. I’d like to know what I’m expecting in the characteristics of this.
and more pics just to let you know what car we talking about here.
Last edited by Rps13sr; Mar 2, 2022 at 03:39 AM.
Reason: More pictures
Hi I’m new to rx7s and rotaries. Bought one a while back with an unknown turbo. Here is a pic. I’d like to know what I’m expecting in the characteristics of this.
I get you are trying to find a lil more info on the turbo, but you literally gave us next to nothing. Is there not any sort of identification on it? No numbers, letters, brand name or nothing? Did you ask the previous owner? Should've come with a list of aftermarket parts and modifications...the turbo is just one small piece of that puzzle. What ECU is it running? What size injectors does it have? What fuel pump? Spark plug heat range? Who did the tune, when was it done, and where was it done? What power did it make on how much boost? What octane of fuel did it run during tuning? When was the last time the spark plugs were changed? Same with coolant, oil, fuel filter, air filter (I'm assuming you have one), and spark plug wires. How old are the tires? Any body modifications? How's the compression? Who painted the car? What is the original color? These are questions you should have answers to before you hand over your money...but that's just my opinion.
Last edited by Manny_Apex; Mar 2, 2022 at 07:05 PM.
I get you are trying to find a lil more info on the turbo, but you literally gave us next to nothing. Is there not any sort of identification on it? No numbers, letters, brand name or nothing? Did you ask the previous owner? Should've come with a list of aftermarket parts and modifications...the turbo is just one small piece of that puzzle. What ECU is it running? What size injectors does it have? What fuel pump? Spark plug heat range? Who did the tune, when was it done, and where was it done? What power did it make on how much boost? What octane of fuel did it run during tuning? When was the last time the spark plugs were changed? Same with coolant, oil, fuel filter, air filter (I'm assuming you have one), and spark plug wires. How old are the tires? Any body modifications? How's the compression? Who painted the car? What is the original color? These are questions you should have answers to before you hand over your money...but that's just my opinion.
i bought it knowing they didn’t know what turbo. I can’t identify the turbo. I’m asking if by looks what kinda turbo do people think it is. I have fueltec and 850 primary 1700 secondary. These answers won’t do anything to help identify turbo. I’ve replaced the old injectors and it’s about to get tuned on Friday. I was really hoping it’s something I can live with. I also have a manifold for a t4 turbo custom made. I was thinking about getting bw s363 turbo
so brand name. Don’t know. Mechanic that works on rotaries said they think it’s a weird turbo. They think it’s a truck turbo. Hot side is far bigger than cold side. So if anyone has any idea. That would be nice.
Last edited by Rps13sr; Mar 3, 2022 at 12:12 AM.
Reason: Adding
basically I’m asking y’all to give your best educated guess as to what you think the approximate size or camparable turbos you think it’s in the range in.
basically I’m asking y’all to give your best educated guess as to what you think the approximate size or camparable turbos you think it’s in the range in.
Based on the information and picture provided, the most accurate answer is that it's a single turbo. It probably isn't something like a BW, Garrett, or Precision since they tend to have their name cast into the compressor housing.
You need to measure the compressor and turbine major and minor diameters. Almost certainly off a truck or industrial diesel given the relative size of compressor cover and turbine housing.
basically I’m asking y’all to give your best educated guess as to what you think the approximate size or camparable turbos you think it’s in the range in.
that’s not how this works, it’s not how any of this works …
Judging from what the more experience gentlemen are saying, I'd cancel that tuning appointment, remove that turbo, and launch it to the far side of the moon.
I would think it's still fine for tuning, not knowing the turbo wouldn't invalidate that process. I just wouldn't go into it with unrealistic expectations.
As long as the car comes out safe and smooth it would be a win. With an unknown turbo that's potentially poorly matched, using old technology, than I'd keep expectations low. At least this way there will be plenty of room for improvements!!
The turbine is very unlikely to be a restriction to power but will very likely increase boost threshold rpm and soften response. At least get a decent measure of compressor inducer for an idea on approximate peak airflow.
The turbine is very unlikely to be a restriction to power but will very likely increase boost threshold rpm and soften response. At least get a decent measure of compressor inducer for an idea on approximate peak airflow.
I wish I could. I’m 7 hours away and won’t be going there. After tuning it’s getting towed up here. I did some research and dugout some info. Something about kg parts 76 something and over 1.0 ar.
it’s just looking at the turbo. The cold side looks so small.
previous owner was gonna change turbos and had a custom manifold. So I was gonna get a new turbo and use this manifold
I wish I could. I’m 7 hours away and won’t be going there. After tuning it’s getting towed up here. I did some research and dugout some info. Something about kg parts 76 something and over 1.0 ar.
it’s just looking at the turbo. The cold side looks so small.
previous owner was gonna change turbos and had a custom manifold. So I was gonna get a new turbo and use this manifold
Crank pulley is about 117mm outside diameter, just by eye on your photo you are probably around 60mm inducer, so it has more compressor flow than factory turbos and heaps less turbine restriction. Good chance it has the potential to go 450rwhp range on a US dyno with enough boost, it just might not make boost at as low rpm or be as responsive as an application specific choice. Boost at low rpm is nice on the street but I really dislike the midrange torque hole that the factory turbos have where that thing will probably be starting to make decent torque so it's not the end of the world.
Crank pulley is about 117mm outside diameter, just by eye on your photo you are probably around 60mm inducer, so it has more compressor flow than factory turbos and heaps less turbine restriction. Good chance it has the potential to go 450rwhp range on a US dyno with enough boost, it just might not make boost at as low rpm or be as responsive as an application specific choice. Boost at low rpm is nice on the street but I really dislike the midrange torque hole that the factory turbos have where that thing will probably be starting to make decent torque so it's not the end of the world.
great. Thanks for the opinion. That’s all I needed. People’s opinion even if it’s just their educated guess.
I’m sure you have plenty of company on that particular broad path, been hanging out with my pal Jesus so much that the speaking in parables thing is rubbing off on me
but to now speak plainly, nobody can answer such a question with any certainty, anybody who tries to persuade or convince you otherwise is not likely someone you should consider for advice, regardless of whether they’re intentionally trying to mislead you or their understanding is even less than your own
because again plainly, it’s not a reasonable question to ask with an expectation of receiving a valid answer under the particular circumstances
the circumstances being that it’s just a nameless, unknown turbo of undeterminable configuration/generation/etc.; nobody can just look at a picture as posted and spit out an answer
again; that’s not how it works, it’s just not how any of this works.
I’m sure you have plenty of company on that particular broad path, been hanging out with my pal Jesus so much that the speaking in parables thing is rubbing off on me
but to now speak plainly, nobody can answer such a question with any certainty, anybody who tries to persuade or convince you otherwise is not likely someone you should consider for advice, regardless of whether they’re intentionally trying to mislead you or their understanding is even less than your own
because again plainly, it’s not a reasonable question to ask with an expectation of receiving a valid answer under the particular circumstances
the circumstances being that it’s just a nameless, unknown turbo of undeterminable configuration/generation/etc.; nobody can just look at a picture as posted and spit out an answer
again; that’s not how it works, it’s just not how any of this works.
but please always feel free to pm me and I’ll do the best within my ability to guide or answer any questions with all sincerity.
.
. I completely understand that there is no certainty of accuracy. All I want is peoples thoughts and educated guess. But I’m sure some people can tell the difference on how a t25 is compared to a pte 5857 or 6262 etc. I’m not asking for the little differences between a t25 and t28. More like the is it like a t25 or more like is it more like something much bigger. I’m not asking for anything close to perfect. I’m just want a guess to see if I really need to get a new turbo.
A problem I have they told me to get a whole kit and that’s like 4-5k and I already have a new manifold and maybe I can just get away with buying a turbo slap on to the manifold and custom dp and maybe ic hose. What else would I need for a different turbo and new manifold. External waste gate I can reuse or buy new one. Or do I really need a whole new kit. I’m running fueltec 450 I believe and they wanted me to spend money for a haltec. After pricing everything for the haltec with the screen and wiring harness it was like 7k installed and tuned. I don’t want to buy parts I don’t need and wanted to feel this turbo out first.
i hate to be like, that guy, but a better picture of the turbo might help. one of the two pics doesn't even have the turbo in it.
second if you do want to continue with the mystery turbo, you're going to need to pull it off and take some measurements. its for sure not a T25 or T28, it doesn't look like a Garett at all.
i hate to be like, that guy, but a better picture of the turbo might help. one of the two pics doesn't even have the turbo in it.
second if you do want to continue with the mystery turbo, you're going to need to pull it off and take some measurements. its for sure not a T25 or T28, it doesn't look like a Garett at all.
Im just using those turbos for reference when I was playing with 240sxs and evos.
