STS engines

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Old 07-27-2004, 10:01 PM
  #1036  
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I'm using the aluminium shim only for 15% in my D5.

I've had to lean my mid-range needle and im also now playing with the pressure fitting on the pipe (not yet tested but ive moved the hole to forward of pipe) Seemed ok at my house but I need long straight to test.

BTW you using stock NTC3 pipe or RLogic D/THS pipe?
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Old 07-27-2004, 10:13 PM
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Stock FT NTC3 pipe. I have read other places where the pipe has been deemed to be an issue, but if it was ok with other engines (they varied a little from full tank to empty tank, but never ran this hot!), then I don't want to be chasing my tail. I'm going to install the Novarossi engine tonight and see how that goes.

After that I'll see if I can still be bothered with the STS.
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Old 07-27-2004, 10:26 PM
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Originally posted by Z00M
I use whatever head came with the RS5 as standard, as this is an RS5 converted to a D3.
I see. In my opinion the A/F ratio is correct when you set it at 270F. Just because the heat sink is smaller so the temp is a little higher. We all use 11fins bigger heat sink,so our temp is 20C cooler. As long as your engine will not go out and works fine each tank. A little hotter still ok.

Also I tell you one thing,most of the thermometers on the market are not precise. Except you use high price temp gun(more than $200US?!). I have tested many thermometers,all of them have huge different results. Sometime even more than 20C different. I don't know which one is correct so I use "Exagen" now.
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Old 07-27-2004, 10:35 PM
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I actually wondered about this. I use a venom on board monitor which isn't going to be highly accurate but at least it will always be the same amount of innacurate if you know what I mean.

I have the sensor placed at the base of the head on the crank case opposite the exhaust port.

When the motor says it's at 250F if I do the water drop test the water jumps off the head so I know it's a roughly accurate reading.

So if it runs a 9 fin heatsink and is ok to run hotter then no probs. I'll try and find a bigger heat sink for it.
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Old 07-27-2004, 11:08 PM
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All the venom ones ive seen where 20F or more out. I had one myself but sold it because it was just too far out.
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Old 07-27-2004, 11:26 PM
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But the water test don't lie.
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Old 07-28-2004, 12:05 AM
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True
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Old 07-28-2004, 12:36 AM
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hey all I was wondering what kind of temp guns do yo use, I used to use my raytek but i have dropped it a few too many times and now it does not work to well..

-=thanks Jason
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Old 07-28-2004, 12:39 AM
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http://www.tempgun.com/main.html
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Old 07-28-2004, 03:19 AM
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333.9F!! Must be a new record. That was with the extra shims and a #7 plug. It must have an air leak but I give up. I think if STS wanted to ever sell more than one engine to anybody, they should really look at improving the carb or whatever it is that leaks.
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Old 07-28-2004, 03:30 AM
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Gimme gimme gimme lol
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Old 07-28-2004, 06:31 AM
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hey zoom if you are really having major problems with the engine, I reccoemnd you talking to either pat or geoff at projectzen.net or at 310-544-1508. They have helped me out with parts and info.
or it seems that au-nightmare wants it....

~!jason
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Old 07-28-2004, 07:53 AM
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Originally posted by Z00M
333.9F!! Must be a new record. That was with the extra shims and a #7 plug. It must have an air leak but I give up. I think if STS wanted to ever sell more than one engine to anybody, they should really look at improving the carb or whatever it is that leaks.
333.9F? I have ever run a brand new engine in one race, have no time to break in it,just lean it. 478F is my record. You can see smoke everywhere.

Check your carb;head button;plug;front bearing;rear cover...if there is any fuel leaking?

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Old 07-28-2004, 03:40 PM
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It was still making good smoke everywhere. It just continued to get hotter and hotter. Before that run I checked the head button, I sealed the rear plate, carb where it mounts to the crank case, the main needle and fittings for the fuel inlet. When I was removing this demon engine from the car, I noticed that there was some fuel around the front bearing.

If a brand new engine is going to have a front bearing that is unserviceable then I doubt the rest of the HP claims or anything like that are going to be substantive.

If you want it for $100 Mr nightmare it's yours. But no cheating and putting a different carb on it!

As for going to visit the dudes at project ZEN, for the price of a plane ticket to the US, I could buy a number of decent engines that you can actually use easily, not STS ones.
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Old 07-28-2004, 05:11 PM
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Originally posted by Z00M
It was still making good smoke everywhere. It just continued to get hotter and hotter. Before that run I checked the head button, I sealed the rear plate, carb where it mounts to the crank case, the main needle and fittings for the fuel inlet. When I was removing this demon engine from the car, I noticed that there was some fuel around the front bearing.

If a brand new engine is going to have a front bearing that is unserviceable then I doubt the rest of the HP claims or anything like that are going to be substantive.

If you want it for $100 Mr nightmare it's yours. But no cheating and putting a different carb on it!

As for going to visit the dudes at project ZEN, for the price of a plane ticket to the US, I could buy a number of decent engines that you can actually use easily, not STS ones.
sorry your having such bad luck i've had two and no problems it suck that there is no one you can phone .
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