jonathanjdfraser Posted March 23, 2005 Share Posted March 23, 2005 i have a 93 Pathfinder, which i would marry if i could, and i'm jsut wondering general info about engine rebuilds. my truck has 248000 Km, runs perfect, i'm just wonderin when you know if you should rebuild it or look into things like that, to increase hp? torque? any knowlege on the subject would be apreciated. Link to comment Share on other sites More sharing options...
Precise1 Posted March 23, 2005 Share Posted March 23, 2005 At 250,000km you should have an easy 100,000km left on the motor if has and will be maintained and driven properly. You know you need a new motor when the power fades (worse), it burns oil, is hard to start, or starts knocking... Thats a good time to look into power mods like headers, cams, etc. I think you'll be fine for a while though. Bernard Link to comment Share on other sites More sharing options...
hardwaretoad Posted March 24, 2005 Share Posted March 24, 2005 I agree with B ~ you should have no problem getting many more trouble-free miles... I mean kilometers, out of your Pathy. Link to comment Share on other sites More sharing options...
88pathoffroad Posted March 24, 2005 Share Posted March 24, 2005 Yup. If it ain't broke, don't fix it. I'd leave it be. Link to comment Share on other sites More sharing options...
Mr. Pickles Posted March 24, 2005 Share Posted March 24, 2005 True that. Keep up the regular maintenance, and you shouldn't have to replace anything until the part is ready to tell you it needs replacement. 250Km is only about middle-age for a Nissan. Link to comment Share on other sites More sharing options...
jj big shoe Posted March 24, 2005 Share Posted March 24, 2005 If you've got the room you could buy a junkyard motor and start rebuilding it now. That way you could take your sweet time doing it. Maybe save up for performance cams and CPU and porting and polishing stuff. Link to comment Share on other sites More sharing options...
lgranch Posted March 24, 2005 Share Posted March 24, 2005 I only partially agree with JJ Big Shoe. I have rebuilt VG 30E motors. The rebuild kits are expensive and do not come with all of the parts required. Performance cams and port and polishing will cost a signifcant amount for these VG motors. There just is not enough people building aftermarket parts for them. Remember the VG30E is 10 years old. If money is no object or you have a source then go ahead. Your current motor has still got plenty of miles in it. Check the compression. If all of the cylinders are within 20% of factory spec and all within 10% of each other then forgetaboutit. The VG30 motor is very strong. The lower end has a strong cast girdle and except for losing oil the crank should last forever. A blown motor does not usually even need to be line bored. The cylinders do wear, but hang on to good compression until the very end. While do not know of any cases a well maintained low stressed VG30 should go around 1,000,000 miles. Add in some mild stress and then I drop that to 500,000 miles. Add the stress that 88pathfinder puts on his motor and I would guess maybe to the end of his driveway. Link to comment Share on other sites More sharing options...
88pathoffroad Posted March 24, 2005 Share Posted March 24, 2005 Hey! Link to comment Share on other sites More sharing options...
jonathanjdfraser Posted March 24, 2005 Author Share Posted March 24, 2005 thx alot guys, it is still runnnin great, i will keep changing the oil often and maintain regular maintenance.. JD Link to comment Share on other sites More sharing options...
Slick Posted March 25, 2005 Share Posted March 25, 2005 While do not know of any cases a well maintained low stressed VG30 should go around 1,000,000 miles. Add in some mild stress and then I drop that to 500,000 miles. Add the stress that 88pathfinder puts on his motor and I would guess maybe to the end of his driveway. HAHAHAHAHA.............. ROLMAO! (sorry 88) Link to comment Share on other sites More sharing options...
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