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Old 03-17-2008, 11:33 PM   #1
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Default few questions

Well, unless my eyes have deceived me, OR I am blind in one can't see outa the other, OR have just read TOO many threads, I have a couple questions that I seem to not have been able to find answers for.

1 - where can I get the gasket that goes between the GREDDY turbo and the exhaust downpipe? AND of course, a part number would be equally as important.

2 - I have noticed there have been a few suggestions for places to get silicone connectors THANKS GUYS & GALS, BUT where can you get a complete kit that replace ALL the hoses - heater core, etc in silicone? I have searched all the sites I know of and most all of them only stock the radiator hoses, I would like to replace them all and HAVE seen pics here with them all re-done in what appears to be form fit, vehicle specific in silicone. Again, a recommened website or link would be appreciated.

3. Outside of going fully computerized with e-computer controlled stuff, is there something aftermarket that I can install to get rid of my AFM? I did the MSD Seebring Miata Specific unit years ago when I installed my GREDDY and intercooler, but never went any further. I know that I could get the newer Bipes to do a better job with boost/retard controlling, but I am not sure how to get rid of the AFM. I would greatly appreciate any suggestions OR some links for doing this mod.

It's just time for me to do all my hoses, etc and while I have things apart and out of the way I would like to also do the cooling system hoses. It would be nice to also get rid of the AFM and free up some space.

TIA
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Old 03-17-2008, 11:40 PM   #2
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1. You dont need a gasket. Just make sure the 2 surfaces are not warped.

2. Cant help you with the silicone heater hoses.

3. Megasquirt!
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Old 03-17-2008, 11:48 PM   #3
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1.) I believe the gasket from a Nissan 300zx is compatible (so I've heard)

2.) Samco makes a silicone radiator hose replacement kit, but I'm not sure about the heatercore hoses. A new member on here (madmalc) has silicone hoses for his heatercore he says he got from www.venairsport.co.uk. I don't see a Miata specific application though, so he might have made his own from bends from that site. You might try PM'ing him for info.

3.) You won't be able to remove the AFM using any mechanical device. You will have to use some form of electronics to do it. Joe Perez on here worked out a means to remove the AFM using an Emanage Ultimate. Also, the Megasquirt will allow you to remove the AFM as well.
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Old 03-18-2008, 08:40 PM   #4
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Thanks guys for the reply.

I did a little more searching regarding the gasket. Found a post about the Nissan gasket, just didn't connect it to the GREDY downpipe. It did have a part number, I am assuming it's a Nissan number, so, may be able to get it online from Nissan w/o a model year.

I AM now reading the Megasquirt stuff, I was hoping to NOT have to go to all the computer stuff, but I DO see where I can build/run piggyback with the stock computer, may be the better choice at this time plus it deals with other things that I probably should take care of as well.

Again thanks for the replies.
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Old 03-18-2008, 08:50 PM   #5
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Honestly, you and I are in the same boat when it comes to the MS. I'm more of a wrenches and hammers kinda guy. This electronics stuff is kinda new to me, but just took the plunge due to the overwhelming amount of support on this forum for MS.
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Old 03-18-2008, 09:30 PM   #6
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miataroadster.com for hoses
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Old 03-18-2008, 09:47 PM   #7
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u dont need the gasket between the turbo and dp, i dont have one there, no leaks
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Old 03-18-2008, 10:39 PM   #8
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Just to make sure you're thinking along the right lines...
What's the interest in getting rid of the AFM?
The Greddy manifold/turbo has been proven to provide 250whp with the AFM in place. There are several guys around who have done this on bandaids and piggybacks.

Tell us your complete current setup and what your current upgrade goals are.
If your Greddy kit is currently stock, with no other mods, I've got some great suggestions on how to get some more power without breaking the bank.

First, I'd suggest a new exhaust. If you're on the stock Greddy downpipe, it's killing your spool and boost control. You can have someone fab you up a 2.5" downpipe and exhaust for a couple hundred dollars. You'll pick up about 1000rpm of spool and set the groundwork for making the most of all future upgrades... and I'd say it'll do you about 10whp on the same boost.

Then before you actually turn the boost up, you need an intercooler.

Beyond that, there are 2 paths... engine management or bandaids:

The upgrades down the bandaid path after that are pretty clear.
305-330 cc fuel inectors
Walbro 190lphHP fuel pump
02clamp
Bipes
These will get you reliably in the low 200whp range on about 12psi.

The engine management path is actually more complicated:
Megasquirt/Link/Hydra/Xede/AEM/Emanage/etc...
They all do roughly the same things for fuel/ignition and you just need to do the homework. A new ECU plus some big injectors will get you full control over fuel and spark and allow you to properly tune.

So tell us what you really want to achieve and we'll be more specific about our help.
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Old 03-18-2008, 11:17 PM   #9
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I guess I need to fill in my sig. I had yet to get around to it. Right now I was just going to install all new hoses in/to the cooling system, they are all the original hoses - 15 years is about time for this job, eh? I also was going to do them in silicone, I like the look.

Currently my car is equipped as follows:

Engine mods: GREDDY TD04 - Starion IC - RX7 AFM - 1.8 injectors - Bosch BOV - JR Fuel Pump - old style FM Dustpan Intake/Filter - MSD Seebring Boost Controller - Dual Core radiator - 2.5 downpipe - test pipe - Enthusa Turbo 2-1/2 muffler

Suspension mods: JR Front/Rear stabalizers - FM Springs - KYB AGX's - Front/Rear Shock Tower Stabalizers - Drilled/Slotted Rotors/EBS pads - Toyo Proxies - HDSDD Roll Bar

I was actually thinking of just doing the Bipes mod, taking out the MSD or stacking it. I think I would like to change my IC stuff or at least the air intake part, so that is why I was thinking of getting rid of the AFM. It is NOT a necessity to get rid of it, but just something I am considering at this time. I guess the Megasquirt path would be my next logical approach since I have all the other stuff modded and set up pretty good. I am going to go to a dual feed rail, have yet to look at what's on the market, but it will be done soon.

I am open to suggestions. I have already read all the Megasquirt threads, looked up ALL the parts needs, so I have a good idea of the total costs. I also looked up the e-management, but I think it would be overkill since the Megasquirt is more than capable of what I probably need. My car is more of a daily driver at this time. Lots of wide open roads here to have fun with the power. Many years ago I also did some autocrossing, it was fun, but it is too far to travel and do where I live now. So, most of this is just hobby for me as I DO enjoy working/timkering on my vehicles. I can solder well, build whatever, read schematics to some degree, read instructions well and if enough pictures I pretty much can do just about anything, or at least anything I have tried to do so far.

I am not really as computer literate as I should be. Probably managing all the computer stuff would be my challenge. So, I would need a copy of the Megasquirt For Dummys Guide coupled with the Computer Dummys Guide to get through the programming and settings.
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Old 03-19-2008, 12:04 AM   #10
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Search for the DIY fuel rail.
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Old 03-19-2008, 10:28 AM   #11
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i like you already!
by all means, i will recommend MS to you...also, if you do not have AC and do not have to pass emissions, i would go standalone, not piggy back, but thats your call
the support from this site is more than enough to walk you through the entire ms proces if you show that you are serious (which i believe you already have) and that you are trying to do it right...the people here will be more than happy to help you as they have helped me...believe me, i need all the help i can get...
so, set some money aside and build your MS, and take your time to make sure everything is correct and ask questions any time you are not 100% certain

good luck and welcome to the forum
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Old 03-19-2008, 11:54 AM   #12
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Urban Soot - Thanks for the link, exactally what I am looking for, especially the single lower hose.

levnubhin & urganknowit - Thanks for letting me know about the gasket. I'm an old-schooler type mechanic, so gaskets are just part of my normal thinking/assembly process. Also levnubhin, thanks for the DIY fuel rail suggestion.

samnavy - thanks for the bandaid list - I think I will look into the 02 clamp, still undecided about the Bipes or Megasquirt.

whaaamx5 - no emissions testing in my part of the state, only Albuquerque and Santa Fe, so that is not even part of my concerns. I do have A/C and sometimes it is really a necessity in the hot sw desert, so it has to stay, that's why I was talking piggyback with the Megasquirt. When I lived in the east, July and August were 'top down months' but here in New Mexico we have monsoon season, tons of rain sometimes, humidity off the richter scale, so usually I put on the hard top and run the A/C. The other 10 months are top down.

I am still undecided about the Megasquirt, of course I have been undecided about the Bipes since the day he put it out there about 10 years ago. I know I am getting on the top edge of the MSD, my air/fuel ratio meter (R Speed led type) hits the rich side on shifts between hard accels so I do have the need for a little broader timing swing over what I have now. My boost is right at 12 at that point.

I have gauges mounted in a dash pod for boost and fuel pressure (also a voltmeter), I am thinking about adding an EGT, digital air/fuel ratio and dual digital oil temp/water temp on the a-pillar, they would give me more information and probably push my decision regarding either the Bipes or the Megasquirt.
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Old 03-19-2008, 08:25 PM   #13
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wow i didn't notice that you can use the nb lower hose to eliminate the stock na elbow pipe. In pictures it looks really long, do you have to cut or modify it? or is it slap on and good to go? i've actually been looking for a silicone one piece lower hose for a while
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Old 03-20-2008, 05:50 PM   #14
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Mach929 - from the picture that is available of the hose and looking/comparing to the stock setup it looks like it will be a direct replacement. I am going to e-mail them about the other hoses to do the whole system, but I will certainly be ordering the one piece vrs the 2-piece replacement. If they offer all the hoses i will put together a list of their numbers and post it.

I also have decided to add the 02 clamp and the Bipes. Everything else would certainly be nice, but I don't really see the need at this time . So, one of these days soon there will be a MSD in the for sale ads. I know it an be 'stacked' with the Bipes, but have not found any references as to how that would be wired up. I'll live with the AFM for now, it's been there for 15 years, works fine, a little longer is not going to hurt anything.

Maybe after getting the few little things done that I am planning right now, I'll look at doing some body related stuff. There are some nice things offered by Racing Beat and others, give the car a facelift and a little bit of a new personality, eh?
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Old 03-20-2008, 06:19 PM   #15
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i went ahead and ordered a 90-93 upper hose and 99-05 lower hose from mazda, i read some not so good things about silicone hoses and coolant. problems with leaks that i just don't want to deal with so i got factory rubber. should have them in my hands tomorrow but i don't know when i'll see my car hopfully this weekend.
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Old 03-20-2008, 10:34 PM   #16
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SAMCO website has their part numbers as:

TCS 196/C the two hoses-upper/lower radiator
TCS 27/C-A the four 'ancilliary' cooling system hoses

I believe that most all the major auto parts can order SAMCO, otherwise you might have to go to SAMCO to find a dealer in your area. I e-mailed miataroadster.com this morning regarding buying both SAMCO packages from them, have yet to get a return reply.
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Old 03-23-2008, 12:41 PM   #17
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Update to the ancilliary hoses - I got a reply from miataroadster. It seems that the ancilliary hoses are not a US thing, must not be much of a demand out of the US for them. Anyway, he is going to get me a set as a special order, will take a little time to get them. He is consider handling them if there would be a demand. SO GUYS - if you are interested in them, e-mail miataroadster and let them know. Demand will bring supply.
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Old 03-23-2008, 12:59 PM   #18
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why not a set of OEM coolant hoses from rosenthal?

http://finishlineperformance.com/sto...cat=316&page=1
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Old 03-23-2008, 01:32 PM   #19
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Cut and paste your list of mods from your third post into your sig.
Type in your city in NM into the LOCATION spot in your profile.

The OEM hoses in my '93 have lasted 150k miles and show no cracking or other damage. I Armor-All them every time I do a detail... 3 or 4 times a year. With that kind of longevity, I don't know how Samco stays in business.
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Old 03-23-2008, 01:43 PM   #20
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As you have pointed out ArtieParty, a complete set of replacement stock hoses ARE available, and for the person who wished to replace them accordingly, that is an excellent place and price to get all the stock parts.

When I began the discussion it was more or less directed toward going to silicone hoses as replacements. People have changed out their radiator hoses with silicone, those have been readily available for quite some time. I was trying to address changing out the entire cooling system with silicone and providing whatever information I could for those interested.

In this process we all learned that if someone wanted to eliminate the two-part lower hose and pipe, that the single hose for the 99-05 is a direct replacement for those 3 pieces. One hose/2 clamps vrs 2hoses/1 pipe and 4 clamps is certainy a smarter configuration. Whether you choose to make this change with a factory hose replacement or go to a silicone replacement it is certainly something to consider when you are doing your hoses.

The OEM's complete kit are just fine for those who want them as replacements and want to remain stock, thanks for the link.
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