New Texas Recruit Bitten By the Turbo Bug
#1
New Texas Recruit Bitten By the Turbo Bug
Hey everybody,
Figured I'd go ahead and do a formal introduction post. I'm in Houston, Texas and am currently in the process of purchasing a turbo miata from Wayne Presley in Alabama. The car should be here next week, and I'm super stoked. Decided to name the car Tex to pay homage to its new home... And because I love Texas.
Bought this car as a street legal, but track dedicated toy. I've got some experience on track (maybe 6 or 7 HPDE weekends), but never in a forced induction car and never in a Miata. I'm confident my learning curve will be steep.
The car appears to be in great mechanical shape and only needs some basic safety items and brakes to get ready for the track. I'm a bit nervous about the cooling, as the car has a relatively small inter cooler and a brand new OEM radiator. I'm going to dial back the boost and try to run it with the OEM radiator for a weekend and see how she does.
Looks like there's a lot of Texas turbo miatas out there. Looking forward to meeting you guys. First round is on me.
Take care,
Phil
Figured I'd go ahead and do a formal introduction post. I'm in Houston, Texas and am currently in the process of purchasing a turbo miata from Wayne Presley in Alabama. The car should be here next week, and I'm super stoked. Decided to name the car Tex to pay homage to its new home... And because I love Texas.
Bought this car as a street legal, but track dedicated toy. I've got some experience on track (maybe 6 or 7 HPDE weekends), but never in a forced induction car and never in a Miata. I'm confident my learning curve will be steep.
The car appears to be in great mechanical shape and only needs some basic safety items and brakes to get ready for the track. I'm a bit nervous about the cooling, as the car has a relatively small inter cooler and a brand new OEM radiator. I'm going to dial back the boost and try to run it with the OEM radiator for a weekend and see how she does.
Looks like there's a lot of Texas turbo miatas out there. Looking forward to meeting you guys. First round is on me.
Take care,
Phil
#2
Welcome to MT and it does sound like you have a solid plan there. At least it has a new OEM rad though I would still consider upgrading your cooling system before going too far.
Also I would expect lacking an oil cooler to be more of an issue on track than the smaller intercooler unless its knocking.
Also I would expect lacking an oil cooler to be more of an issue on track than the smaller intercooler unless its knocking.
#6
Welcome!
If you're concerned about the cooling system on the car, a larger intercooler isn't a solution to this unless you're talking about the temperature of the air intake. If you aren't pushing too much power (<220whp), I doubt your small intercooler is really much of a problem.
If you're tracking the car, do you have proper ducting to the radiator? Coolant reroute?
As stated earlier, an oil cooler may be of interest.
Any pics of said car?
If you're concerned about the cooling system on the car, a larger intercooler isn't a solution to this unless you're talking about the temperature of the air intake. If you aren't pushing too much power (<220whp), I doubt your small intercooler is really much of a problem.
If you're tracking the car, do you have proper ducting to the radiator? Coolant reroute?
As stated earlier, an oil cooler may be of interest.
Any pics of said car?
#7
It's running a MicroSquirt. I've got dyno outputs with the A/F Ratio and Manifold Pressure. It looks like a pretty safe tune, which is good. I'm certianly no expert on tuning anything...ever... but Wayne has setup and tuned a few of these for various applications before, all with great results.
Yep, OBDII is going to be a PITA. What a ridiculous government driven rule... "who cares if the car can pass the sniff test, our fickle mandated OBDII computer is the only thing that matters"...but I digress.
Wayne tried to set it up so I could swap back to the stock ECU, but I don't have the stock injectors and there's no MAF meter, so the stock OBDII is going to throw codes and run like ***. I know we're allowed 2 "exclusions" on '99s, but I don't know how the OBDII treats those things. I'm thinking I may try to find a guy.... if you catch my drift.
Yep, OBDII is going to be a PITA. What a ridiculous government driven rule... "who cares if the car can pass the sniff test, our fickle mandated OBDII computer is the only thing that matters"...but I digress.
Wayne tried to set it up so I could swap back to the stock ECU, but I don't have the stock injectors and there's no MAF meter, so the stock OBDII is going to throw codes and run like ***. I know we're allowed 2 "exclusions" on '99s, but I don't know how the OBDII treats those things. I'm thinking I may try to find a guy.... if you catch my drift.
#8
Welcome!
If you're concerned about the cooling system on the car, a larger intercooler isn't a solution to this unless you're talking about the temperature of the air intake. If you aren't pushing too much power (<220whp), I doubt your small intercooler is really much of a problem.
If you're tracking the car, do you have proper ducting to the radiator? Coolant reroute?
As stated earlier, an oil cooler may be of interest.
Any pics of said car?
If you're concerned about the cooling system on the car, a larger intercooler isn't a solution to this unless you're talking about the temperature of the air intake. If you aren't pushing too much power (<220whp), I doubt your small intercooler is really much of a problem.
If you're tracking the car, do you have proper ducting to the radiator? Coolant reroute?
As stated earlier, an oil cooler may be of interest.
Any pics of said car?
I'll post the pics I've got later tonight. Still waiting on the car to ship!
#14
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From: Lake Forest, CA
Just what I was going to say.
You NEED a new exhaust manifold right away, especially for track use.
Nice job joining up right away though. I had considered that car before I bought mine, it'll be interesting to see if it's as advertised. I'm sure you'll love it!! Welcome to the group!
You NEED a new exhaust manifold right away, especially for track use.
Nice job joining up right away though. I had considered that car before I bought mine, it'll be interesting to see if it's as advertised. I'm sure you'll love it!! Welcome to the group!
Last edited by turbofan; 03-28-2013 at 06:59 PM. Reason: to not double post, thought of more stuff to say
#17
I wouldn't worry excessively about the intercooler. Its small size will actually allow more cool air to that stock radiator, which will help to keep you out of the woods in the short run.
You will need to add some heat shielding to all of those exhaust parts (after you replace the fail-prone manifold) or the car won't make it through the first ten minutes of HPDE. Even the stock exhaust has heat shielding. You are making roughly twice as much power as stock, which means twice as much heat. The brake master cylinder reservoir will melt and you could have a fire and no brakes at the same time. You will need to shield it to protect all of the brake lines and throttle cable, too. And it looks like the brake fluid needs changing.
The need for a reroute stems from a manufacturer's oversight when re-purposing the engine from a front wheel to rear wheel drive configuration. The coolant flow path does not evenly cool all cylinders. This isn't a big deal at stock power levels but becomes increasingly troublesome as the thermal dissipation requirements increase.
You will need to add some heat shielding to all of those exhaust parts (after you replace the fail-prone manifold) or the car won't make it through the first ten minutes of HPDE. Even the stock exhaust has heat shielding. You are making roughly twice as much power as stock, which means twice as much heat. The brake master cylinder reservoir will melt and you could have a fire and no brakes at the same time. You will need to shield it to protect all of the brake lines and throttle cable, too. And it looks like the brake fluid needs changing.
The need for a reroute stems from a manufacturer's oversight when re-purposing the engine from a front wheel to rear wheel drive configuration. The coolant flow path does not evenly cool all cylinders. This isn't a big deal at stock power levels but becomes increasingly troublesome as the thermal dissipation requirements increase.
#18
Thanks for the color.
Any harm is running the OBX until it cracks? Obviously once it cracks it has to be replaced because the car will run like ****. Am I missing something more significant?
Did some digging on the rerout. For track application, any additional considerations that need to be made on the change? Will an off the shelf kit suffice?
I plan to wrap as much as I can in the engine bay. Scary note about the brakes failing. I plan to change the pads and fluid before any track time. Brakes are nothing to play with.
Any harm is running the OBX until it cracks? Obviously once it cracks it has to be replaced because the car will run like ****. Am I missing something more significant?
Did some digging on the rerout. For track application, any additional considerations that need to be made on the change? Will an off the shelf kit suffice?
I plan to wrap as much as I can in the engine bay. Scary note about the brakes failing. I plan to change the pads and fluid before any track time. Brakes are nothing to play with.