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Old 11-25-2013, 03:01 PM   #21
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Idk, I haven't really even looked into it too much and I don't have an endless amount of money to throw at the car. I've decided I'm going to slap all new gasket in this motor, plus a new water pump and timing belt, then use the money I was going to rebuild it with to buy the megasquirt, manifold, a coolant re-route, polyurethane motor mounts, and perhaps some other things I needed anyway. That way I can get it running now and it'll give me some time to tune it (this will be my first experience tuning with something other than an SAFC so I expect it to take me a while to figure out), then maybe 6 months or so down the road I can have Savington rebuild it and swap to a later head. I'll just try my best to keep it under 7k until then :P

I've already picked up a set of 460cc rx7 injectors from the junkyard that I'm going to have cleaned before putting in. And I'm having Abe at Artech make me a manifold that will orient the turbo in the same spot so I can re-use my downpipe and everything. I need a throttle body and fuel rail anyway, and I see that OBX makes both. The TB looks like a direct copy of the skunk2, but I searched and couldn't find any instance of anybody using one. The fuel rail I figure is just a piece of aluminum with some holes in it, pretty hard to **** up, but I thought I'd get opinions before ordering either.

Couple quick questions on interchange stuff: I looked up Gates water pumps at work and it appears that there is a different part number listed for a 1.6 and 1.8, but 949 racing lists their water pump as fitting all 90-05. I just replaced the water pump on my 1.6 like a week before the engine blew so I'm wondering if I could just re-use it on the 1.8? Also, FM lists their motor mount brackets as fitting all 94-05 miata's, but I found a pair on ebay listed for 99-00 that look different, they don't have the threaded hole at the top that I've read is for the starter bracket. Will these work or no? Pair of 99 00 Mazda Miata Motor Mount Brackets | eBay
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Old 11-25-2013, 05:18 PM   #22
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Originally Posted by 6strngs View Post
Idk, I haven't really even looked into it too much and I don't have an endless amount of money to throw at the car. I've decided I'm going to slap all new gasket in this motor, plus a new water pump and timing belt, then use the money I was going to rebuild it with to buy the megasquirt, manifold, a coolant re-route, polyurethane motor mounts, and perhaps some other things I needed anyway.
You are talking about the 1.8 motor you just bought correct? The order of operations of how you should get the car running is as follows.
1. Swap in 1.8 motor, leave 1.6 ecu and injectors, get the car running.
2. Swap in MS, swap in wideband, leave stock injectors, get car running.
3. Swap in larger injectors, get car running.
4. Finally put on turbo and then get the car running.

For the waterpump you want a GMB branded one. This kit off ebay will work if you have a 94-97 engine. I have used ebay kits for the past 6 years or so on dozens of miatas and never had any issues with them.


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Originally Posted by 6strngs View Post
That way I can get it running now and it'll give me some time to tune it (this will be my first experience tuning with something other than an SAFC so I expect it to take me a while to figure out), then maybe 6 months or so down the road I can have Savington rebuild it and swap to a later head. I'll just try my best to keep it under 7k until then :P
Learn to tune the car NA before putting any turbo kit on. There will be a learning curve and you might as well do that when you are not as worried about popping the motor.

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Originally Posted by 6strngs View Post
I've already picked up a set of 460cc rx7 injectors from the junkyard that I'm going to have cleaned before putting in. And I'm having Abe at Artech make me a manifold that will orient the turbo in the same spot so I can re-use my downpipe and everything. I need a throttle body and fuel rail anyway, and I see that OBX makes both. The TB looks like a direct copy of the skunk2, but I searched and couldn't find any instance of anybody using one. The fuel rail I figure is just a piece of aluminum with some holes in it, pretty hard to **** up, but I thought I'd get opinions before ordering either.
Having the injectors cleaned and having Abe build you a manifold are good ideas. I may have a 94/97 TB in my garage. I will check later and let you know how much. You can get an oem fuel rail from any of the companies that part of miata's for about $20, no reason not to go that route. I typically get my parts from Panic Motorsports.

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Originally Posted by 6strngs View Post
Couple quick questions on interchange stuff: I looked up Gates water pumps at work and it appears that there is a different part number listed for a 1.6 and 1.8, but 949 racing lists their water pump as fitting all 90-05. I just replaced the water pump on my 1.6 like a week before the engine blew so I'm wondering if I could just re-use it on the 1.8? Also, FM lists their motor mount brackets as fitting all 94-05 miata's, but I found a pair on ebay listed for 99-00 that look different, they don't have the threaded hole at the top that I've read is for the starter bracket. Will these work or no? Pair of 99 00 Mazda Miata Motor Mount Brackets | eBay
I believe those motor mounts should work, but I am not positive. I know the NB's have a slightly different sub frame, so that might be why slightly different brackets, I would yet again just check with Panic Motorsports for some.
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Old 11-25-2013, 10:55 PM   #23
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You are talking about the 1.8 motor you just bought correct? The order of operations of how you should get the car running is as follows.
1. Swap in 1.8 motor, leave 1.6 ecu and injectors, get the car running.
2. Swap in MS, swap in wideband, leave stock injectors, get car running.
3. Swap in larger injectors, get car running.
4. Finally put on turbo and then get the car running.
Correct, I meant I hadn't looked into what head I would eventually put on it, I'm just worried about the here and now for now. I'm not a total noob to this stuff, I've just never actually tuned with a standalone before. I do have a fairly good understanding of how an engine runs and how fuel and timing affect how it run, so I'm sure I'll be able to figure it out after a few dozen hours of reading

Quote:
For the waterpump you want a GMB branded one. This kit off ebay will work if you have a 94-97 engine. I have used ebay kits for the past 6 years or so on dozens of miatas and never had any issues with them.
I get an awesome discount on oe replacement parts through my work, and I can probably order a GMB pump there if it's really better. I was planning to use all Fel-Pro gaskets, and a Gates timing belt and water pump.

Quote:
Having the injectors cleaned and having Abe build you a manifold are good ideas. I may have a 94/97 TB in my garage. I will check later and let you know how much. You can get an oem fuel rail from any of the companies that part of miata's for about $20, no reason not to go that route. I typically get my parts from Panic Motorsports.
I actually went to the local wrecking yard today and was able to get an oem fuel rail. Somebody had already grabbed the injectors though so the spacers that go between the fuel rail and manifold for the bolts were missing, so if anybody has a set of those let me know! The throttle body was also missing too unfortunately, but I did get a sweet valve cover that doesn't have the cam cover section from a 323 or something (maybe somebody can help me identify it), it was tucked behind the seat of the miata like somebody was saving it for later, but finder's keepers


Quote:
I believe those motor mounts should work, but I am not positive. I know the NB's have a slightly different sub frame, so that might be why slightly different brackets, I would yet again just check with Panic Motorsports for some.
I actually made a WTB thread on a local roadster forum and someone replied to tell me he had a pair of the FM ones, brand new, and only wanted $10 for the pair, so I'm hopefully picking those up tonight
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