Okay so I have a precision 6262 and i have a 10an return and a 3an feed with a restrictor and yesterday found out that the turbo is gone. Has bad shaft play and looks like it scuffed the housing a bit. The turbo is only 4 months old and I emailed precision. Not sure what they will do but does anyone have an idea what could have happened? The feed is coming from the vtec solenoid and the return is going to the front engine cover.

 

JB or BB turbo? What size restrictor? If it's a JB turbo and you ran a restrictor, that's probably the problem. Is there any kinks at all in the drain hose? I had the JB 6262 for a while with no problems and ran a -3 with no restrictor from the relocation block on the engine block and a -10 return to the girdle.

 

Should never run a feed off the vtec solenoid. The feed should come from the oil pressure sensor located next to the oil filter on the block. Probably didn't have enough oil flowing and wrecked the bearings.

If precision finds out you installed it wrong it won't be covered under warranty.

 

Hmmmm I have a lot of confidence in the previous owner who actually built this and maybe its not coming from the vtec solenoid. I will have to look. So if/when I get this fixed, your all saying to feed from oil pressure location, and to not run a restrictor. I have done some research on the forums and I though the high oil pressure that we have in the cars can cause a problem with the turbos?? I have a JB turbo BTW. Thanks again guys for your feedback! Also the car was at PTuning for dynoing. You'd think they would pick up on something like this if it was installed "incorrectly" correct?


EDIT: okay I can confirm that it is the vtec oil pressure switch. I guess the switch was removed and a banjo fitting was bolted there for the feed.

 

the pressure switch only gets oil when vtec is ON

 

KillerCom, here are a few pics of my vtec solenoid. I'm using a banjo bolt for the oil feed (beneath the blue tape, currently):



It worked great for him

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Hold on it didnt post pics its on the hearcomesboost boost tread

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doesn't all the supercharger's use the vtec port??

 

As Waldizii said, vtec pressure switch only has oil going through it when vtec is ON. Its not hard or costly to run the feed correctly with a brass T-fitting. It was actually probably the easiest part for me to install on my kit. As for size of the actual brass fitting, im not certain as my kit was second hand and it was included. Maybe Waldizii can chime in on the correct thread pitch and size to come out of the block and correct threads for the feed line?

As for having confidence in the way the last person built the kit, never rely on that. I found that my kit had a whole bunch of shit wrong with it that I wasnt aware of until it failed. Luckily it didnt cost me the turbo or something catastrophic. Always do your research and only rely on your self, never anyone else.

 

Seriously guys? I ran my 6262 with the oil feed from the vtec port for 5,000 miles. It then started leaking past the seals from TOO much oil pressure and I sent it back to Precision to have the seals replaced.

Now after I got the turbo back from Precision I installed a .065 restrictor to keep the oil from being pushed by the seals. This is when things get interesting. After maybe 100 miles on the freshly rebuilt turbo the shaft play was soo bad the compressor wheel was rubbing the housing!

So what I gather from this is that the oil pressure at idle is not sufficient if your turbo requires a restrictor to be installed. After all this I didn't want to take any more chances so I decided to go with the tried and true method of running the oil feed from the pressure sensor port and so far everything is good.