Any body done any thing exciting to their 90 series TD engines??
Spied the following on a different list, anybody know of an alternative turbo exhaust pipe, and a cost (cause mine is probably in need of something like that)??
Subject: Improving Turbo exhaust flow
Previously I've had a large bore exhaust fitted - from turbo dump pipe back. This improved performance, but not as much as I had anticipated. Removal of the turbo identified the issue - the small bore in the cast turbo dump pipe.
I did find a cast unit to fit, but shied away when ws told the price was over $400. Here's a pic of the original & aftermarket unit http://203.100.242.254/pub/dump_housing.gif The unit on the right is the factory unit (the match box wont go in any further). The aftermarket unit is on the left. This clearly was not the type of $$ I was prepared to spend, since the rest of the exhaust system was just a bit more than that.
The factory cast dump housing is about an internal diameter of about an INCH, negating much of the benifet available from the 3" system I had installed. After much pro-crastination I have manufactured the flange required build a custom turbo dump pipe to improve the exhaust flow from the turbo. The pipe work was fairly stright forward.
Fitting the new dump pipe resulted in the turbo spinning up a lot quicker, bringing boost on quicker, improving drivability while lowering the EGT some (more) for increased relaibility.
I have done the same on a friends Patrol, after he was less than impresed with the improvement provided by the exhaust system alone, and had similar results.
This was a mod that had no negitive impacts what so ever. Anybody interested in an exhaust flange for Hilux / Prado / Surf or Patrol should
Spied the following on a different list, anybody know of an alternative turbo exhaust pipe, and a cost (cause mine is probably in need of something like that)??
Subject: Improving Turbo exhaust flow
Previously I've had a large bore exhaust fitted - from turbo dump pipe back. This improved performance, but not as much as I had anticipated. Removal of the turbo identified the issue - the small bore in the cast turbo dump pipe.
I did find a cast unit to fit, but shied away when ws told the price was over $400. Here's a pic of the original & aftermarket unit http://203.100.242.254/pub/dump_housing.gif The unit on the right is the factory unit (the match box wont go in any further). The aftermarket unit is on the left. This clearly was not the type of $$ I was prepared to spend, since the rest of the exhaust system was just a bit more than that.
The factory cast dump housing is about an internal diameter of about an INCH, negating much of the benifet available from the 3" system I had installed. After much pro-crastination I have manufactured the flange required build a custom turbo dump pipe to improve the exhaust flow from the turbo. The pipe work was fairly stright forward.
Fitting the new dump pipe resulted in the turbo spinning up a lot quicker, bringing boost on quicker, improving drivability while lowering the EGT some (more) for increased relaibility.
I have done the same on a friends Patrol, after he was less than impresed with the improvement provided by the exhaust system alone, and had similar results.
This was a mod that had no negitive impacts what so ever. Anybody interested in an exhaust flange for Hilux / Prado / Surf or Patrol should
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