My TRD S/C is giving me about 3-4 psi and I'm looking for possible sources of boost leak, belt slip, etc. My oil filter has an odd dirt pattern on the outside, somewhat near the S/C belt. Is this evidence of belt slipping and throwing rubber dust onto the oil filter housing? Or did the prior owner just put a greasy thumbprint on there? (see pic)
SC belt slipping - is this evidence?
- Thread starter Tom2769
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TRON
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Most people don't experience belt slip with a stock 3 inch pulley. Boost is relative; so if you are in higher elevation during the hot summer months 3 or 4 psi can be normal. If the belt is aligned correctly there shouldn't be any sign of wear on your oil filter. I would clean the oil filter and see if it repeats the same pattern
Thanks Tron, I thought it was a long shot. I'm in Chandler, AZ so elevation is about 1,200. But it is crazy hot now. 3-4 psi still seems low to me at this elevation, but maybe it really is just the combo of heat and slightly less backpressure from my 3" catback. Sounds like it's time for a smaller pulley - and all that comes with it...
30, that's not bad for your elevation. I found a kink in my boost gauge line. Replaced the line and now I'm consistently showing just a tick over 4psi too, but I think I should be higher at this elevation. Looking forward to the cooler temps...
Stock manifolds and y pipe with a magnaflow 3" catback. Once it cools down enough to work in the garage, I'm planning on spec U headers and exhaust - the drone is getting old. I suppose the lower back pressure of the catback could be bringing down my measured boost a bit...
