New to Rotary's
Never worked on one before. Understand the concept but never took a stab at it. I now own one so if i need ANY help, this is where i will be coming to. Im looking forward to it :D
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Welcome. Recommendations...resist adding a lot of performance modifications to the car until you are more familiar, arm yourself with a copy of the Factory Service Manual on whatever year/generation of RX7 you have, read the FAQ sticky(s) in that generation's section and familiarize yourself with the search function. Have fun.
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Start with a big ass cup of coffee and a few hours each night.
Seriously,that is what I did!..each night just reading and then reading some more. Hell!, My Car was built with Info from this Forum,as I knew SFA about them before. Now I can't remember what a Freakin Piston engine is and I gotta work on a couple of them! Damn you Wankel! |
the outside of the engine is just like any other car and should be treated the same as any other car.
the inside of the engine requires attention to particular details which are mostly gone over on this site. |
Watch your oil, watch your coolant.
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I'm in the same boat as you. Just recently purchased and FD but I've been lurking on this site for awhile just trying to absorb as much information as I could. learned a hell of a lot in the 5 or 6 months I've been browsing.
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First and foremost, it's just an engine. It's not a magic unknown device. In fact the actual engine is going to be the most reliable part of the car. It's just that all the stuff bolted to the engine is getting old and starting to fail.
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Originally Posted by Sgtblue
(Post 11999830)
Welcome. Recommendations...resist adding a lot of performance modifications to the car until you are more familiar, arm yourself with a copy of the Factory Service Manual on whatever year/generation of RX7 you have, read the FAQ sticky(s) in that generation's section and familiarize yourself with the search function. Have fun.
I am however strapping a turbo to mine; probably start it up and drive it naturally aspirated for a little bit just to make sure everything is in order, but yeah, its going to be turbo'd. As for the factory service manual; i do not own an rx7, however i own a 13b and im putting it in a miata at the moment; so unless it goes over the engine and internal components, etc.... then it will be quite useless i'd think. I am however having tons of fun so far :]
Originally Posted by misterstyx69
(Post 12000013)
Start with a big ass cup of coffee and a few hours each night.
Seriously,that is what I did!..each night just reading and then reading some more. Hell!, My Car was built with Info from this Forum,as I knew SFA about them before. Now I can't remember what a Freakin Piston engine is and I gotta work on a couple of them! Damn you Wankel! i've watched TONS of youtube videos about them and performance etc...... it's just getting the courage to accomplish it myself haha
Originally Posted by RotaryEvolution
(Post 12000195)
the outside of the engine is just like any other car and should be treated the same as any other car.
the inside of the engine requires attention to particular details which are mostly gone over on this site.
Originally Posted by Casual_John
(Post 12000803)
Watch your oil, watch your coolant.
Originally Posted by staples323
(Post 12002575)
I'm in the same boat as you. Just recently purchased and FD but I've been lurking on this site for awhile just trying to absorb as much information as I could. learned a hell of a lot in the 5 or 6 months I've been browsing.
Originally Posted by Aaron Cake
(Post 12002654)
First and foremost, it's just an engine. It's not a magic unknown device. In fact the actual engine is going to be the most reliable part of the car. It's just that all the stuff bolted to the engine is getting old and starting to fail.
I just watched one of your videos on youtube about your cosmo literally yesterday. lol As for the stuff bolted to the engine, i am getting rid of ALL of it. EVERY SINGLE PIECE besides what is needed to run. I already have both sides of the intake stripped down, oil metering pump accessories are removed [it was shot anyway.... the lines were SUPER brittle], EGR is off...... you name it. The ONLY things that will be on there are the sensors that are NEEDED for the engine to run [im going to need a list of this so i know what to get] and im going to put a MAP sensor to control my turbo [GT3782V - has actuated vanes to control boost pressure accordingly] I will be running a megasquirt computer to control all of it. So just spark plugs, intake, injectors, exhaust, and alternator. As for the cooling system, im want to run an external pump without a thermostat just so i can save room for the turbo. Something a little like this: https://cimg2.ibsrv.net/gimg/www.rx7...d16f29efcc.jpg |
i dont know why everyone is going to electric pumps, just another point of larger catastrophic failure. when a mechanical pump fails it is generally progressive, when an electric pump fails the signs usually are a little more subtle and then BOOM!
if you gotta ditch the water pump to fit the turbo then the manifold is poorly placed. |
Originally Posted by RotaryEvolution
(Post 12002707)
i dont know why everyone is going to electric pumps, just another point of larger catastrophic failure. when a mechanical pump fails it is generally progressive, when an electric pump fails the signs usually are a little more subtle and then BOOM!
if you gotta ditch the water pump to fit the turbo then the manifold is poorly placed. Or its because the miatas engine bay is too small for a pretty decent sized turbo lol |
we have built cars with S475 turbos, that are much larger that retained the stock water pump.
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Pesonally I would only use a electric water pump on a drag car.The electric water pump is to unreliable for street use. Not to mention inefficient. And like RE said when they go out they just go out zero warning. Plus Toyota starlet has a smaller engine bay then the Miata and I've seen dozens of let's call them large frame BW turbos under the hood with the stock water pump.
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New member who posts that section asking for "ANY help" and then responds to pretty much anything anyone offers claiming he knew that already or knows better.
:cool: |
oops, i missed the part about it going into a miata
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Originally Posted by heynoman
(Post 12002825)
Pesonally I would only use a electric water pump on a drag car.The electric water pump is to unreliable for street use. Not to mention inefficient. And like RE said when they go out they just go out zero warning. Plus Toyota starlet has a smaller engine bay then the Miata and I've seen dozens of let's call them large frame BW turbos under the hood with the stock water pump.
Originally Posted by Sgtblue
(Post 12002908)
New member who posts that section asking for "ANY help" and then responds to pretty much anything anyone offers claiming he knew that already or knows better.
:cool: Im mainly asking for help on the internal workings of the rotary engine, the stuff i can eliminate on the outside of the engine, stuff that rotaries have vs piston engines [oil metering pump - have never heard of that in my life], what kinda of oil pressure these things have...... etc. Stuff like that. Apologies if it came off the wrong way. |
Originally Posted by Shawnp1989
(Post 11999816)
Never worked on one before. Understand the concept but never took a stab at it. I now own one so if i need ANY help, this is where i will be coming to. Im looking forward to it :D
Looking around, there appears to be a plethora of data here. I wish you luck with your new car! |
Piston engines are much more forgiving to an overheat than the rotary. The 13b generates a lot of heat and quickly it doesn't take much time to go from all good to all bad.
No one is saying electric water pumps don't work just that if it fails there's a good chance your engine goes with it. |
Originally Posted by MjhRotor
(Post 12005731)
Piston engines are much more forgiving to an overheat than the rotary. The 13b generates a lot of heat and quickly it doesn't take much time to go from all good to all bad.
No one is saying electric water pumps don't work just that if it fails there's a good chance your engine goes with it. |
Stock systems in good shape should be fine with an na engine but the the koyo radiator is pretty solid for the price. Keeps my s5 turbo temps perfect even in 120 degree Arizona summers.
I can't stress enough how good a working stock mechanical fan is. If you absolutely have to go electric make sure to use a shrouded fan from and oem application. Even high end after market fans have pretty poor airflow compared to modern one fans. Also upgrade the alternator if going to an e fan. |
Also use oem Mazda radiator hoses from Atkins or mazdatrix the few extra dollars is worth it as the after market ones are junk in comparison.
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Originally Posted by MjhRotor
(Post 12006081)
Also use oem Mazda radiator hoses from Atkins or mazdatrix the few extra dollars is worth it as the after market ones are junk in comparison.
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Be sure the fan clutch is in good shape and getting a quality aftermarket temp gauge is a good idea as the stock gauges movement isn't real linear and it's more like "cold" "normal" "to late"
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Originally Posted by MjhRotor
(Post 12006132)
Be sure the fan clutch is in good shape and getting a quality aftermarket temp gauge is a good idea as the stock gauges movement isn't real linear and it's more like "cold" "normal" "to late"
Something about clearing out the valves among other things since the cars apparently don't do too hot if just used for a daily driver around town :P |
Its a good idea to make sure the oil metering system is functioning properly more than anything (or that you premix properly if it's not or disabled)
As for revving it out it's not something you need to do constantly but same as piston engines it'll help keep carbon from building up. I've put about 44k miles on my turbo 2 in the last 3 years and the engines been the most reliable part. Everything attached to it is about as reliable as any other 80s japanese car. Daily driving is perfectly possible if that's what you want but the gas mileage even in a well sorted vehicle will suck so it's not cheap. |
Originally Posted by MjhRotor
(Post 12006493)
Its a good idea to make sure the oil metering system is functioning properly more than anything (or that you premix properly if it's not or disabled)
As for revving it out it's not something you need to do constantly but same as piston engines it'll help keep carbon from building up. I've put about 44k miles on my turbo 2 in the last 3 years and the engines been the most reliable part. Everything attached to it is about as reliable as any other 80s japanese car. Daily driving is perfectly possible if that's what you want but the gas mileage even in a well sorted vehicle will suck so it's not cheap. I plan on pre-mixing whenever I get the car, with an exception for when I have to go and bring the car in for inspections. Do you know how long I'd have to run the gas clean to ensure that it doesn't fail emissions after running pre-mixed fuel? |
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