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Old 09-06-2006, 04:53 PM   #1
pwpanas
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Quote:
Originally Posted by Seanchp
Not sure about the spark plugs, I'll have to check them today. I bought the car about 4 months ago, the guy I bought it from was stupid and knew nothing about the car, not even that his second turbo was not engaging. So I would assume that they've never been changed and that the coils have 120,000 miles on them.
In general oem coilpacks start getting significantly weaker before 120K miles...with new plugs, properly gapped, and new coilpacks (fwiw) I'm quite certain your ignition problems will go away...
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Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.
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Old 09-06-2006, 09:19 PM   #2
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There is a good chance that the spark plugs have not been changed in the last 5 or so years, maybe even not at all. where in the world are you from??
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HKS Front Mount
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Old 09-07-2006, 11:54 AM   #3
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Quote:
Originally Posted by Seanchp
...Where in the world are you from??
I'm not sure I understand your question, but if you mean it as a compliment, then many thanks.

Oh, and please let me know if you'd like recommendations on spark plugs.

How about you? From your post, I'd assume you were able to correct the 2nd-turbo-not-engaging problem. How did you diagnose & correct the problem? (pardon my curiosity).

P.S. Don't forget about weak coilpacks possibly being related to your boost-miss problem. If you change the plugs and it's still missing, you'll need to fork over about $400 (about $60 ea. or so plus shipping) to 'yota for six brand-new coils.
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Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.

Last edited by pwpanas; 09-12-2006 at 01:14 PM.
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Old 09-07-2006, 08:18 PM   #4
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Sorry to sound weird, I did mean it literal, "where are u from in the world"- sorry Im new to this site and didn't know I could just click on your icon to find out where u live.

Yes, I would really like a spark plug recommendation, i'm not too trust worthy on what a lot of other sites have to say about them.

About the turbos- when I flew down to cali to buy it, I first test drove the car and he knew nothing about the car except that he liked the way that it looked. He had some shops install some upgrades, like an avcr, tein supen. w/edfc, front mount ect. well, when i test drove it, it felt fine till i took it up to about 6,000 for the first time. It hit 1 bar when the first turbo would normally engage, but when the second turbo would engage, the boost level would just drop until I was at almost 0 boost press. which told me the second turbo was not engaging. Since there was zero smoke comming out of the 3.5 exhaust, that told me that the turbo was most likley not bad, just not properly hooked up. I also noticed that some of the vaccum lines were blocked off, and it looked like someone maybe tryed to set it up for the tru-twin conversion. So, I got a 1500$$$ discount after he already lowered the price, bought it drove it home, got the tru-twin conversion diagram, replumbed everything, and they have worked ever since.

Also, and if you could point me in the direction of some good spark plugs, that would help me a lot!! Thanks, Sean
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1994 BPU+ 6speed
94mm HKS Super Dragger Exhaust
AVC-R B-Controller at 17psi
HKS Front Mount
Greddy Emanage
Tein Coil Overs W/EDFC
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Old 09-08-2006, 05:15 AM   #5
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Quote:
Originally Posted by Seanchp
Sorry to sound weird, I did mean it literal, "where are u from in the world"- sorry Im new to this site and didn't know I could just click on your icon to find out where u live.
Np...near Atlanta, GA. How about you?
Quote:
Originally Posted by Seanchp
Yes, I would really like a spark plug recommendation, i'm not too trust worthy on what a lot of other sites have to say about them.
If you want to change your plugs with every oil change, then you can go with inexpensive plugs like NGK 6097s. If you'd like your plugs to last longer than that, go with oem plugs gapped down to about .030". Note that oem plugs are platinum with a very fine center electrode. You have to be VERY careful when you gap this kind of plug, since even the slightest scratch or chip on the center electrode will create inferior performance.
Quote:
Originally Posted by Seanchp
About the turbos- when I flew down to cali to buy it, I first test drove the car and he knew nothing about the car except that he liked the way that it looked. He had some shops install some upgrades, like an avcr, tein supen. w/edfc, front mount ect. well, when i test drove it, it felt fine till i took it up to about 6,000 for the first time. It hit 1 bar when the first turbo would normally engage, but when the second turbo would engage, the boost level would just drop until I was at almost 0 boost press. which told me the second turbo was not engaging. Since there was zero smoke comming out of the 3.5 exhaust, that told me that the turbo was most likley not bad, just not properly hooked up. I also noticed that some of the vaccum lines were blocked off, and it looked like someone maybe tryed to set it up for the tru-twin conversion. So, I got a 1500$$$ discount after he already lowered the price, bought it drove it home, got the tru-twin conversion diagram, replumbed everything, and they have worked ever since.
Glad to hear you were able to diagnose the problem! Great work!
Quote:
Originally Posted by Seanchp
Also, and if you could point me in the direction of some good spark plugs, that would help me a lot!! ...
You can pick 6097s up from sparkplugs.com, NOPI, or NAPA. Oem plugs from Toyota (Jeff Watson 800-327-2087)...
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.

Last edited by pwpanas; 09-08-2006 at 05:18 AM.
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Old 09-08-2006, 03:02 PM   #6
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Thanks alot for the help! So oem supra plugs are what is best? I guess that keeps it simple, thats 4 sure.

I am from Boise Idaho, the state capital. There sure are not alot of supras down here, how about where u live.

So in all of the upgrades u have done over the years, which would u say was the most worth the money??
About your single turbo kit, what did u go with-brand, do u think that brand is very important?? Im one that thinks, if its made with something like garrett internals, then its probably fine. What do you think??

Do you have stock internals with you single turbo kit?? what is you ball park whp??
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1994 BPU+ 6speed
94mm HKS Super Dragger Exhaust
AVC-R B-Controller at 17psi
HKS Front Mount
Greddy Emanage
Tein Coil Overs W/EDFC
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Old 09-08-2006, 04:01 PM   #7
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If I bought the cheap plugs, they should still be gaped at .030 right?
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1994 BPU+ 6speed
94mm HKS Super Dragger Exhaust
AVC-R B-Controller at 17psi
HKS Front Mount
Greddy Emanage
Tein Coil Overs W/EDFC
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Old 09-10-2006, 04:53 AM   #8
pwpanas
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Quote:
Originally Posted by Seanchp
...So in all of the upgrades u have done over the years, which would u say was the most worth the money??
The fuel system upgrade. This is the cornerstone of all future turbo upgrades, and the one key item that enabled me to experience high boost levels.
Quote:
Originally Posted by Seanchp
...About your single turbo kit, what did u go with-brand, do u think that brand is very important??
My kit is HKS and my turbo is Sound Performance. Yes, I believe that brand is very important because it's generally an indication of fitment, reliability, AND the amount of r&d that has gone into making sure all parts of the the turbo & turbo kit are perfectly sized.
Quote:
Originally Posted by Seanchp
Im one that thinks, if its made with something like garrett internals, then its probably fine. What do you think??
Not unless you know that exact turbo (including intake a/r, exhaust a/r, etc) & exact size is correct for your application.
Quote:
Originally Posted by Seanchp
Do you have stock internals with you single turbo kit??
No...(only) if you're shooting for 900rwhp or more, you need to consider building your internals. Anything less than that, and the stock internals do just fine, if you're properly tuned and running the right fuel for your boost level. If you're running without sufficient tuning, or not running the right fuel for your boost level, no amount of building or expensive internals will save your engine.
Quote:
Originally Posted by Seanchp
what is you ball park whp??
800rwhp or so now...shooting for over 1200rwhp soon (with an 88mm turbo, 1200cc injectors, 3 fuel pumps, 3-stage nitrous, etc. it should do that quite easily)...
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+
Displacement is no replacement for boost.
Life begins at 30psi.


NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners.

Last edited by pwpanas; 09-12-2006 at 01:10 PM.
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