2 new problems.... - Page 2

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

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.

06-27-2007, 01:10 AM	#11
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	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 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. Last edited by IHateHacks; 06-27-2007 at 01:14 AM.

06-27-2007, 10:22 PM	#17
j3pz 500whp yet? Join Date: Nov 2005 Location: Mechanicsville, MD, US of A, 20659 Posts: 1,060	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... __________________ 88 N/A w/ 5spd - stock - not running, bhg 87 turbo/targa w/ 5spd- fidanza light weight flywheel, new oem slave cylinder, apexi air filter, no ac and no heat

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06-27-2007, 02:12 AM	#12
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	cough Taylor /cough The down side is you have to build them yourself. Yeah, 6 to 8 what? Kg/cm^2?

06-27-2007, 02:19 AM	#13
Japanese supra tt Intake Join Date: Jun 2007 Location: tokyo Posts: 43	6-8 kg/cm^2 thats what it says on the gauge. sometimes it will be around 4 like its suppose to, its wierd.

06-27-2007, 02:38 AM	#14
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	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.

06-27-2007, 02:50 AM	#15
Japanese supra tt Intake Join Date: Jun 2007 Location: tokyo Posts: 43	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.....

06-27-2007, 05:10 AM	#16
supramacist 1000whp postwhore Join Date: Apr 2007 Location: Escape from the Prison Planet Posts: 1,356	Sounds like a ford to me, lol. My oil pressure fluctuates with rpm's.

06-27-2007, 11:38 PM	#18
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	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.

06-27-2007, 11:48 PM	#19
supramacist 1000whp postwhore Join Date: Apr 2007 Location: Escape from the Prison Planet Posts: 1,356	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.