oil pressure w/ upgraded flywheel & pulley

[warrier04]

i'm interested in upgrading my flywheel and pulley, but i always get deterred from this goal when i read threads about people blowing their engines. on the other hand, i hear one-off stories of people doing fine w/ these upgrades.

if i were to do this mod, i would def. get an oil pressure gauge to monitor what could give me the biggest probelm. question - what ranged of gauge would be the most useful for the msp? autometer makes gauges that monitor oil pressure from 0-100 psi, 0-150 psi, and 0-200 psi. what would the normal reading be for my msp, and then what reading would start to reveal there's a problem?

thanks for any help. PM me if you want.

drew.

 

[changedman]

0-100 should be good. normal readings are usually middleish 0-100 (40-60) etc

 

[warrier04]

0-100 should be good. normal readings are usually middleish 0-100 (40-60) etc

so when people experience oil pressure problems, what kind of pressure would a person see? higher or lower? lower, right ... b/c of a loss of oil?

 

[Puckpimp71]

Totally talking out of my a** here, but if the pulleys are smaller, wouldn't they cause higher oil pressure? Supposing that were the case, I don't think that's good in the long run for the turbo.... Just speculation.

 

[Spooled]

So does anyone make a lighter pulley for the accessories that isn't underdriven? I want the same size, but lighter, and I don't want a crank pulley (bad for harmonics).

 

[jeffmsp]

perrin makes one that is not underdriven, dont know if it is available yet, check perrins thread.

 

[olddognewtrks]

External pulleys have absolutely no effect on oil pump performance or oil pressure. The pump is solidly attached to and directly driven off the end of the crank. While the pump is a separate piece, it is essentially part of the long block. FWIW, you could set up an engine with a separate electric motor driving the water pump and A/C. It will not affect oil pump function.

 

[MSPinVA]

Also, the FS engine does NOT experience bad harmonics with UD pulleys. The BP engine is the one that goes kaboom with them, not ours.

 

[EvilMSP]

This is one of those topics that have way to many strong opinions. You either hear they are awsome or they will blow you up lol. But to me it seems like they are fine. I've seen several threads that say it is ok for harmonics. That it can be bad on some cars but not ours apparently.

 

[Spooled]

This is one of those topics that have way to many strong opinions. You either hear they are awsome or they will blow you up lol. But to me it seems like they are fine. I've seen several threads that say it is ok for harmonics. That it can be bad on some cars but not ours apparently.

I've seen a lot of different opinions on these, too. It's not so much the weight that disrupts things as it is the fact that some companies don't use rubber in the crank pully to damper the vibrations. Accessory pulleys aren't a big deal; it's the crank pulleys without some sort of rubber damper that will cause problems in the long run.

 

[igdrasil]

If you are swapping the crank pulley, which is part of the crankshaft...the system will have a new balance (better or worse) without measurements.

Usually if you are going to swap things like crank pulley, pressure plate, pistons/rods and flywheel, it is suggested that you re-balance the assembly...specially if you are shooting for the high-rpm range where vibrations will start to cancel the power.

Personal opinion, if the new pulley will release a fair amount of power (or the features that you look for) and that feature is not a loss on other things...then i think is a good to go.

 

[SCMP3]

From the depth of thread hell.....comes this 7.5 year old thread.