XJ650LJ Turbo Seca

So, I've taken a Turbo Seca under my wing to nurse back to health. Anyone an expert here? Specifically;
:?: Who works on the turbo/wastegates (as in overhaul or exchange?) How much for an overhaul and/or exchange?
:?: Who has parts for the carbs (Mikuni). I was told they are no longer available. Probably more like the guy doesn't know where to look (here!)
I've got oil in the exhaust pipes, manifold, and leaking from the turbo/wastegate area. Turbine shaft seal, or valve guides? (7k on the bike)
Thanks in advance......

 

Welcome to the ongoing soap opera of LJ ownership.

Oil out of the pipe is common if the bike has sat. Seized wastegate is common. If it's seized shut, forget about it. The blowoff valve in the surge tank will keep the bike from going overpressure. Take off the rubber boot leading into the compressor and pull the turbine shaft. The should be NO side to side play, but some play along the shaft axis is normal. Take the bike for a good run and see if the oil clears up. If it does, you're good to go. The shaft seals need pressure to seal, and oil will often leak past the ball-check valve in the front of the crankcase when the bike is shut off and gravity feed into the oil passages of the turbo. The resultant leaking is annoying, but harmless.

Overhaul kits are available from www.gpopshop.com , for about $106. Turbo overhaul is easy to do, just scribe the parts before dissassembly so they go back together in the same orientation, to preserve balance. At 7k, I doubt you will need to do any of this. My old turbo had over 50,000 miles on it and there was no sideplay in the shaft at all.

If this is an 83, you will already have the power up kit installed by the factory, if it is an 82, there is a possibility that you have the lower boost setup. Look for the wastegate signal coming from the surge tank through a small white plastic bellows arrangement, and a plugged port on the turbocharger body to confirm that you have the higher pressure arrangement.

 

Thanks for the reply! I appreciate the link for the turbo setup. This thing has been doing a LOT of sitting, so I'll give it a good, hard run and see how it fares. Again, thanks!