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-   -   2 new problems.... (http://www.toyota-supra.info/forums/mkiii-supra/8858-2-new-problems.html)

IHateHacks 06-27-2007 01:10 AM

Yes MSD wires are the best you can buy for a MK3.

Look closer and you will see that the 1G shares another part with non-turbo 7M's, that would be a distributor. No DIS ignition system there. That hinders performace likewise, no wonder the engine was only rated at 210hp with twin turbos :dunno:

So I would guess that you would use MSD wires for a non-turbo MK3. Because "turbo" 7M wires will be too short because the coils sit directly on top of the spark plugs and you need them to reach over to the distributor.

6 to 8 what? Bar? If its bar, then holy shit you have problems there. Thats like over 80psi. I don't know much about 1G's, but I know enough to know your oil pressure is too high.

cre 06-27-2007 02:12 AM

*cough* Taylor */cough* ;) The down side is you have to build them yourself.


Yeah, 6 to 8 what? Kg/cm^2?

Japanese supra tt 06-27-2007 02:19 AM

6-8 kg/cm^2

thats what it says on the gauge.

sometimes it will be around 4 like its suppose to, its wierd.

cre 06-27-2007 02:38 AM

Wow, that's from 85 - 114psi. Bar, by the way, is damned close to the same as Kg/cm^2: 8bar = 116psi 8Kg/cm^2 = 114psi.

Keep in mind though that oil pressure is not static, some increase per higher engine speeds is normal (if it wasn't going up I'd be worried).

Any way, that's a lot higher than I would expect to see from a Toyota of that vintage. What weight oil are you running? Did the previous owner do any of their own work? They may have modified the oil pump's relief valving. Look for the pressure specs per RPM for that engine, it may be fine... I really don't know.

Japanese supra tt 06-27-2007 02:50 AM

yeah, i just drove it and now it seems to be fine, stays around 4 and goes up as rpms do.

this car is like a freakin woman man, always changing its mind.....

supramacist 06-27-2007 05:10 AM

Sounds like a ford to me, lol.

My oil pressure fluctuates with rpm's.

j3pz 06-27-2007 10:22 PM

in my NA it would idle at around 40 psi and would go as high as 60psi when around 5k rpm. dont know whats normal but the 7m did blow a hg...

IHateHacks 06-27-2007 11:38 PM

On a 7M, when the oil is under 190 degrees the pressure will be just below 40psi when driving and around 25-30psi when idleing.

When the oil is up to normal operating temp, 190+ degrees, oil pressure should be around 10psi at idle and just below 40psi at 3000rpm or higher.

Try replacing the oil pressure sending unit, its worth a shot.

supramacist 06-27-2007 11:48 PM

Mine never went below 20 while in motion and went to well over 60.

Alas a BHG was not far behind. It might actually act different once I get the beast to CRANK.


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