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  #21  
Old October 27th, 2014, 12:17 PM
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John B.
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I would not do the gear drive as they have a very bad reputation for failure.
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  #22  
Old October 27th, 2014, 12:47 PM
lbwhotrod
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Les Wlton
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Corrected. The engine I am building has the zues drive, I am ditching it.
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1991 D90. Love the personality, now just need to give her new head lights, lift up the front and rear, a nose job and something to dress up the tail.

200TDI, LT77, BW t-case.
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  #23  
Old October 27th, 2014, 05:51 PM
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Abraham Bell
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Quote:
Originally Posted by Red90 View Post
I would not do the gear drive as they have a very bad reputation for failure.
Why is this? It makes sense to me. Am I missing something?
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  #24  
Old October 27th, 2014, 06:07 PM
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John B.
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In theory it would be a good idea. Unfortunately the gear sets that were built by Zeus where of a low quality and have a very high failure rate.
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  #25  
Old October 27th, 2014, 06:09 PM
lbwhotrod
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Les Wlton
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Great on paper, however the design was flawed. As the stock system is a dry belt system the gears never recieved proper lubrication, also the gears were a spur design causing them to be noisy. To make it worse the mounting of the idler gears was weak and caused total engine failure. The belt design is currently reliable and can hold for the power. On top of that the company went under, according to sources.
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1991 D90. Love the personality, now just need to give her new head lights, lift up the front and rear, a nose job and something to dress up the tail.

200TDI, LT77, BW t-case.
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  #26  
Old October 27th, 2014, 07:05 PM
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Robert Davis
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Quote:
Originally Posted by lbwhotrod View Post
So here is what I am working towards:

200TDI fire ringed head, Head studs, New pistons and rings, Mod the pump, new belt drive, T25/28 hybrid turbo, Larger front mount intercooler

Water/meth injection will keep down the egt's.

I really want to mess with the injection timing as most inline diesels come factory with very mild timing.
The 200 TDI is of weak design regarding the bridge between the valves, so you might want to use a 300 TDI head.

Would like to know how the TDI fire ringed head works out.
The LR TDIs are famous for head gasket issues and this may be easy to accomplish and start a trend for more miles between blown head gasket changes.
Hope there are no weaknesses that result from the machine work.

Please keep us updated on the fire ringed head.
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Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
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  #27  
Old October 27th, 2014, 08:19 PM
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Jason
1986 D110
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Originally Posted by rdavisinva View Post
The 200 TDI is of weak design regarding the bridge between the valves, so you might want to use a 300 TDI head.

Would like to know how the TDI fire ringed head works out.
The LR TDIs are famous for head gasket issues and this may be easy to accomplish and start a trend for more miles between blown head gasket changes.
Hope there are no weaknesses that result from the machine work.

Please keep us updated on the fire ringed head.
On a cummins fire ringing , and O ringing (a .030 stainless steel wire imbedded in a groove cut into the head) work well.

I did compound turbos and o ringed the head on a friends truck. It could fall on its face up hill at 70mph and recover boost simply by rolling into the throttle. 0>>>50PSI in a few seconds.

The fire ring and O ring act as a buffer to protect the head gasket from combustion pressure.

Most larger diesels use the liner as a fire ring. The head sits on the liner and the HG seals the water/oil passages....
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  #28  
Old October 27th, 2014, 08:39 PM
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Robert Davis
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Impressive numbers...
Yes familiar with concept use on other engines, but not with that much boost.
Will be interested to see how the 200 TDI does with fire ringing.
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Uncle "Richard" Douglas has a Land Rover with big wheels that never gets stuck... until he breaks something so it won't go. Uncle Douglas always breaks something. - Anna Crowther at the Conclave 2012 (AKA Carburetor Neck)

"What's with this death wobble, Uncle Douglas, I can't keep it in 1 lane?"
UD: "Just Power through it man!"
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  #29  
Old October 27th, 2014, 09:10 PM
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John B.
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Yes but this is an alloy head. It may not be able to handle the notch.
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