integra gsr JRSC

 

Yes, VTEC Is reliant on oil pressure. (not enough, no waaaaaaaaaaaaaa) also, If the engine is not within the parameters of acceptable operating temps, it will not cross over. As for the pulley, that I am unsure of. I would think that a light weight pulley would only help, but then again you never know........ Somebody on here will.

 

This argument has been going on for years. There's no clear answer because there's no real research. Plenty of people will throw on a light weight pulley, rev their high milage, less than great condition motors into the red all day then blame their spun bearings on the pulley. I personally have not tried one (although I'm thinking about it), so I can't comment. I have, however, seen setups that have survived a long time with light weight pulleys. I would have gotten one for myself a while ago but they're just so hard to find in standard size. Almost all are underdrive

 

wouldn't use an underdrive pulley as I could see it could burn up an oil pump. I think any aluminum laser cut pulley should work the little pin on the crank is key not to crush when installing. I think allot of people probably crush the pin by mistake when installing and if you do it will give you allot of problems. It's very important to make sure the pin and the pulley hole match and I had my first pulley installed at the dealership on my scion they crushed the pin and the pulley gave me issues. I then had them redo it and never had a problem with it on my scion. I think your right overrevving any motor will cause allot of problems. I will state this I would rather have a crank pulley then a lightened flywheel. Do one or the other not both. don't run an aluminum flywheel and a crank pulley. I personally feel maintaining mass inertia on the flywheel is important on mountain drives so the crank pulley is the ideal modification. I realize the discussion has been going on for a long time one thing I do know to be fact is that the stock crank pulley not being perfectly true should cause more stress on the crank then the aftermarket crank pulley. I also found roughing the grooves up for the belts will help prevent belt slippage. Setting overrevving aside the crank pulley should increase the life of the engine and take stress off the crank when the car is revving high. We balance cranks. We balance rods and pistons to me it doesn't make sense to run a non balanced crank pulley.At the very least when building a motor stock crank pulleys should be balanced by a machine shop in my opinion. I suspect the stock crank pulley could in theory cause premature bearing wear.

For supercharged cars I think the water injection will work as good as one of the expensive intercoolers. I'm also looking into doing a japanese reverse hoodscoop and adding a copper heatsink to the top of the jacksonsuch a problem it seems to me that cooling it properly is the key too increasing efficency chargers which should help transfer allot of heat off the supercharger very fast.