| MIATA BUILD |
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 | May 12, 2011 - With the transmission in place, I was able to locate the frame rails and bolt them in to place.
The mount for the T5 transmission has no adjustability built in, so I wasn't able to do this earlier as can be done with the T56 transmissions.
I did run into a small problem with the transmission crossmember - the bushings on the crossmember were too wide for the brackets. Some grinding ensued, resulting in hot pink urethane dust. Very entertaining.
As per Bill's suggestion, I tack-welded the bolts for the subframe to the floor. This means the rails can be easily removed without the need to pull the seats or to have someone hold the top of the bolts. That's a good thing, as one of the rails needs to be removed in order to pull the transmission.
entry 816 - tags: conversion, transmission |
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 | May 12, 2011 - Here's a problem.
The T5 has an angled rear mount. The red crossmember is correct - but the transmission itself is rotated about 5 degrees counter clockwise. The bellhousing isn't made quite right.
Since I'm aiming to have the car running, broken in and shaken down by a trackday on June 4th, I don't have time to mess around with this. So the T5 is coming out of the car and a T56 is going in place. That's a well proven and engineered solution and we have almost all the parts on hand at Flyin' Miata.
The required frame rails and transmission crossmember are being shipped out today from V8 Roadsters and should be here on Tuesday. I was planning to spend the weekend working on the car, but I think I have enough to keep me busy.
Frankly, I'm a bit relieved. While this transmission is used in the V8R Spec cars, the torque ratings for a T5 are lower than the torque output of this engine. Even a modified T5z is questionable, although the light weight of the Miata helps. The T56, on the other hand, has no question marks around it. I'll be happy to test the T5 later, but I don't think the months before the Targa are the right time.
Most of the delays in the build of this car have involved waiting for parts for the T5 conversion as well. It's been frustrating to put it mildly. But we're back on track, so it's time to get moving ahead!
entry 817 - tags: conversion, t5 |
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 | May 14, 2011 - The T56 is a monster compared to the T5.
Just enormous. It's also quite a bit heavier, although the steel bellhousing for the T5 makes up for some of that. It's a lot more difficult to wrestle that big boy around. But it'll be worth it.
entry 818 - tags: transmission |
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 | May 14, 2011 - The T56 is mated up to the engine and is ready to install.
But I have a few more things to do before it's permanently installed. Still, it makes my heart feel good to see these two joined up.
entry 819 - tags: transmission |
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 | May 14, 2011 - AFCO has come on board as a sponsor, and we'll be using the Targa Miata to test out some new designs.
Of course, the car was used to originally develop the AFCO suspension and I think it's the best setup available for Miatas regardless of use. My original thought that "a good Targa car is a great road car" was actually pretty accurate, and I was amazed at how well it worked on track. Plus, of course, there's that ability to hit speed bumps at 80 mph.
But between continuing development at AFCO and some lessons learned over the last 3-4 years of running this suspension, we're going to try some new things. They might work. They might not. But it's going to be fun finding out.
entry 820 - tags: suspension |
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 | May 14, 2011 - The Targa Newfoundland cars posing for a portrait.
One is a little closer to being ready than the other.
entry 821 |
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 | May 16, 2011 - Try to guess which clutch is from a four-cylinder Miata and which one is used for a healthy V8.
Try to guess which clutch is from a four-cylinder Miata and which one is used for a healthy V8.
entry 822 - tags: drivetrain |
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 | May 16, 2011 - Time to start with some of the plumbing.
First, an oil cooler. I'm setting this car up with both an oil cooler and a remote filter kit for two reasons. One, of course, is to keep oil temps under control. That's not liable to be an issue during the Targa, but it's pretty hot around here.
The remote filter is to move the filter up and out of harm's way. Otherwise it's mounted at the bottom of the engine and is just waiting for a Newfoundland rock to elope with it.
entry 823 - tags: cooling, oil |
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 | May 16, 2011 - The filter is mounted up beside the frame rail in the wheel well.
I took a remote filter mount from Flyin' Miata that's usually used on 4-cylinder Miatas and turned it sideways. It's fairly easily accessible but protected here.
entry 824 - tags: oil |
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 | May 16, 2011 - The previous picture of the oil cooler showed the bracket I built to install it in the nose.
It should get a fair bit of airflow here! If it wants to vibrate around, I'll look at installing some braces on the bottom but there's not much to brace to really.
You can also see the amount of damage - I mean "patina" to the nose of the car here. Also, I had some fun with the bolt colors again, copying the Martini colors with a Classic Red, Mariner Blue and a Crystal Blue bolt.
entry 825 - tags: cooling, oil |
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 | May 16, 2011 - Lots of fun with braided oil line!
Bill put a similar oil cooler on Elvis a while back so I knew what collection of pieces I'd need, but I had to make the lines up piece by piece. Somehow, I managed to do this without puncturing my hand too badly. The best tool for cutting the big -10 line was a chop saw.
entry 826 - tags: cooling, oil |
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 | May 16, 2011 - I forgot to take a picture of this earlier, but the fans are in place.
It's an off-the-shelf setup from Flyin' Miata for the V8 cars, and it's really effective at pulling air through the radiator. Cooling should not be a problem.
I'll have the engine out again, so I'll get a better picture then.
entry 827 - tags: cooling |
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 | May 16, 2011 - The front sway bar is a V8-specific part, again from Flyin' Miata.
The big engine needs a bit more room at the front, so the new bar has a kink in it to provide extra clearance.
This is the sort of build I'd expected. All the engineering has been done, I'm mostly just assembling at this point. Well, if "just assembling" means building my own oil cooler lines, brackets, etc...
entry 828 - tags: sway bar |
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 | May 16, 2011 - When I first built the car, I stripped out the wiring harness quite a bit.
And since the V8 uses its own standalone harness, I can strip it out even further. Here's what's left of the usual tangle that runs up the passenger's fender: just the wires for the lights. I'll tidy up the bundles when I'm done, but a clean harness is easier to troubleshoot if something goes wrong!
entry 829 - tags: wiring |
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 | May 17, 2011 - I found a culprit!
I've been having trouble getting the T56 to sit properly - it hasn't been fully bolted in to place yet. Well, it turns out that the pilot bearing was a special one for the T5, which is too thick (and too large a diameter) for the T56 input shaft. Frustrating, but easy enough to fix once Bill helped me find the problem. Once that's replaced, the engine and transmission can go in - and stay there!
entry 830 - tags: drivetrain |
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 | May 20, 2011 - Finally, the drivetrain is all buttoned up and ready to install.
I installed the headers as well as some of the power steering plumbing while I had easy access.
entry 831 - tags: Drivetrain, v8 |
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 | May 20, 2011 - Much better - the engine and transmission snuggled into place.
The V8Roadster rails are laser cut, so the bolt holes were in the exact same location as the studs I'd welded into place earlier. That saved me a lot of drilling! The transmission crossmember location ended up a bit off because I'd aligned the rails for the T5 setup, but that was easy enough to cope with.
entry 832 - tags: Drivetrain, v8 |
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 | May 20, 2011 - With the engine in place, it's time for more wiring.
I started to make the small number of connections between the Miata harness and the GM one. This was made a bit more complex by the fact that the GM setup had already been installed in a 2002 Miata so I had to reverse-engineer the modifications - and of course, the harness in the Targa Miata was heavily changed. Still, it's coming together.
entry 833 - tags: Wiring |
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 | May 20, 2011 - I'm giving both wiring harnesses a checkup as I install them.
This broken knock sensor wire is a good example of why. The GM harness had been used in Elvis, FM's first V8 Miata and had thus been installed/uninstalled quite a bit over the years.
entry 834 - tags: Wiring |
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 | May 25, 2011 - To take a break from wiring, I decided to run the fuel and brake lines.
It didn't take long really, but it feels good to have that done. They're anchored with rivnuts embedded in the frame rails, making it easy to remove them if required. Not the frame rails so much, the rivnuts fasten them to the car's frame at the same time!
entry 835 - tags: conversion |
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THE DIARY