maybe one from the new lx500
It seems too roundish for the 60 though... maybe you can get one off a subaru

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maybe one from the new lx500
That is something I hadn't thought much about. I thought the issue with the heat of the turbo had more to do with heat inside the turbo mechanism and not so much the gas passing through. That is, I thought EGT was an indicator for the 'health' of the engine and closer to the engine the better.
It seems the important thing for keeping the turbo healthy is making sure it has had a chance to spin down before cutting off the oil supply by turning off the engine.
I've also wondered about putting in an auxillary oil pump to move reduce wear on cold start of the engine and allow the turbo wind down with oil pumping on a relay. Anyone done anything like this?
I tried the flipped manifold, with a td04 off a d-50 lasted about 8hours. D-50's had 2 different turbos I beleive the older ones had the larger tc05. The td04 really seemed to choke out around 2400rpm. Excellent bottom end boost and response.
It means 30 PSI at manifold for 15 PSI of boost . ? ( thought the best spot . ? )
I can reach 1:1 with my current setup, it only gets there when the exhaust reaches 650 deg C preturbo. 20psi backpressure for 20psi boost.
It hits 2:1 under transient conditions, is roughly 1.5:1 at cruise and drops as load increases and exhaust temps climb.
1. I need more gauges ..
2. Did you have a pic of your exhaust manifold presure sender
3. Which it's the best rate or target to reach . ? 1.5:1 . ?
Ok with that flange I can make the Ebay Cheapy work ?That adapter might work but i'd be worried about how high it'd put your turbo up. I think you'd be better off with this one...