PS
Sunny, "Friend from TTE" ...............
I'm sure he'd like some more friends overseas too
Maybe someone in the English Riviera (Bournemouth) nudge nudge, wink wink
Some interesting bits and pieces you have going on for sure
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| Author: | two_OH_five [ Sun May 10, 2009 12:00 pm ] |
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PS Sunny, "Friend from TTE" ............... I'm sure he'd like some more friends overseas too
Maybe someone in the English Riviera (Bournemouth) nudge nudge, wink wink Some interesting bits and pieces you have going on for sure
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| Author: | Sunny [ Sun May 10, 2009 12:07 pm ] |
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Hi, 32mm (outer diameter!) becouse i don't want a pipe that is smaller in diameter then the OEM hose, 32mm was available 
aluminium is the better choice, but i cannot weld it with my company's welding, and i have not the right tool to bend a alu pipe the reason why i replace the samco hose is that, when you drive in rpm's around 3500rpm's and higher if the thermostat is opened (engine is good warm) a hose will pull together, this means that the water flow is restricted up to 70%, definitely not good for a performance engine the pressure in the system is not significantly this is important if you race or rally the car where you drive the engine a lot of time or ever hard, doesn't know it about track where you only drive short....i only saw that some evo track driver have replaced the OEM radiator against a smaller core so that there is enough space for a big turbo (only track condition please!) i forgot to wrote that if i drive gently around 120-130km/h, 5th gear the water will also cool down extremely  
@ "Friend from TTE" was a user in the german gt4 forum (project manager engine), but is not online any more, does't know why 
the next idea i want to realize is to build a channel around the radiator package so that no air can pass them, but this project is not important this time greetz |
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| Author: | TrackToyFour [ Sun May 10, 2009 12:55 pm ] |
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Hi Alex, Many thanks for the explanation, all makes sense now Presumably working on this principle it would make a lot of sense to replace flexible hoses with hard pipe. Perhaps this is why so many competition engines use aluminium pipe and Adel Wiggins type connectors to eliminate even short lenghts of flexible hose.
The Jaguar at the Silverstone FIA GT race last weekend is a good example of this. Note that they only use the Wiggins connector at the radiator end of the hard pipe. They still need a short length of flexible hose to accoodate the engine movement against the rigid mount radiator 
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| Author: | TrackToyFour [ Sun May 10, 2009 1:30 pm ] |
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Sunny wrote: the next idea i want to realize is to build a channel around the radiator package so that no air can pass them, but this project is not important this time
Good example of this on the Jag GT 
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| Author: | Sunny [ Sun May 10, 2009 4:40 pm ] |
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Hi, this two pictures are greate examples
greetz |
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| Author: | two_OH_five [ Sun May 10, 2009 9:06 pm ] |
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OOOOF Honking gurt V8, racecar Goes off for a bit of a lie down
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| Author: | Wolf_Tm [ Tue May 12, 2009 1:34 pm ] |
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Sunny wrote: the reason why i replace the samco hose is that, when you drive in rpm's around 3500rpm's and higher if the thermostat is opened (engine is good warm) a hose will pull together, this means that the water flow is restricted up to 70%, definitely not good for a performance engine Do you mean the rubber pipes collapse ? |
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| Author: | Sunny [ Tue May 12, 2009 2:44 pm ] |
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Hi Wolf, yes, pull together = collapse
the water flow of the pump raise with ervery rpm, but the hose don't want this greetz |
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| Author: | Wolf_Tm [ Tue May 12, 2009 2:46 pm ] |
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Sunny wrote: Hi Wolf,
yes, pull together = collapse greetz Ok, so why did you say that water pressure inside the rubber pipes is not important ? |
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| Author: | Sunny [ Tue May 12, 2009 2:49 pm ] |
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Hi, sorry, not important for the process i explain water pressure is important for the boiling point greetz |
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| Author: | Wolf_Tm [ Tue May 12, 2009 2:51 pm ] |
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Sunny wrote: Hi,
sorry, not important for the process i explain water pressure is important for the boiling point greetz Sure, but I imagine pressure inside the pipes makes also them not to collapse... didn't it ?!? |
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| Author: | Sunny [ Tue May 12, 2009 2:59 pm ] |
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Hi Wolf, if it has a effect, only a very small after i mounted the pipe i observed a great step in water cooling
greetz |
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| Author: | Wolf_Tm [ Tue May 12, 2009 3:11 pm ] |
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Sunny wrote: Hi Wolf,
if it has a effect, only a very small after i mounted the pipe i observed a great step in water cooling greetz Sunny, believe me... it's not my intention to "attack" you or your "TTE friend"... but I think "observations" are to be made ONLY in a scientific way... that is to say with ecu/computer loggings of good sensors and calculations. Many other factors enter in the play with the oil temp: water temp, egt temp, ambient temp, ambient pressure, humidity, engine load, oil type, oil contamination, etc etc. I'm saying this because it's really hard for me to believe that a change in pipes material could result in a -20 deg C. in oil temp! That is not to say I don't believe you... understand me... I trust you see this loss in temps... Cheers. |
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| Author: | Sunny [ Tue May 12, 2009 3:22 pm ] |
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Hi, wolf i unterstand you, it is good to be suspicious this makes people to ask "why" as seen in here
you will become a update when it is hot outside -> around july i hope the themp. will be stay low, but i think it will raise sorry i wrote this a bit wrong, i make only moment recordings
this time, 30min racing the engine (many curves, up and down) -> peak oilthemp. 103°C, outside themp. around 25°C, 0,9bar boost to be updated
greetz |
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| Author: | Wolf_Tm [ Tue May 12, 2009 5:10 pm ] |
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Even because in WRC 3SGTE just small sections of engine water pipes are aluminum: if it was that important, I suspect they'd made them of aluminum entirelly. For example I think they used aluminum near the DP to avoid problems in unwanted contacts. And to turn far from the intake manifold to avoid breaking it. 
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