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Old 08-02-2004 | 08:16 AM
  #886  
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There is 3 different versions of PS12. TL2111 has IFMAR, Boner has ROAR and 4racer has EFRA.
They are slightly different to meet propriet rulls.
As I know that from 2005 ROAR will lift 4.5 mm exhaust height rull, so start from that point ROAR and IFMAR version will be the same. EFRA still has some restriction and we will follow it.
There is no secret weapon on the different versions, just everything done to meet the rulls. EFRA is more strictly then everything else.
Best regards
Edward
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Old 08-02-2004 | 02:26 PM
  #887  
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Engines are still running great! Over 1/2 year old and still going strong.
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Old 08-02-2004 | 05:43 PM
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Originally posted by boner
tl2111: what's done to your ps12? can't beleive TG777 have gone to another notch with PS12. Yesterday when I ran my Ps12, decide to lean in more, settle around 240F from 180F hell break loose, thought the power have broke my centax. clutch bell spining together with flywheel after couple laps of hot laps. Well turns out the power have somehow "break" loose the flywheel nuts Another bug is torn O-Ring at the carb, note to self never twist carb body while applying pressure and if it's not broken dont touch it.

TG777: great work on the PS12. very smooth and powerful love it.
I'm glad to see you got the engine running. Told ya so about leaning the top end Try to make sure the bottom is lean enough so you can pinch the fuel line and the engine will stall in around 2sec.
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Old 08-02-2004 | 06:21 PM
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Default ps12

I have been running locally and I am pleased so far. I seem to be on par with the 5 port novas here on the top end. I seem to have more midrange on them. We had the radar gun out last week and I was hitting 54 mph but I do get there pretty quick. The ntc3 are never great for top end so I am satisfied, besides I love the infield....
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Old 08-02-2004 | 07:48 PM
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Originally posted by Surge
I'm glad to see you got the engine running. Told ya so about leaning the top end Try to make sure the bottom is lean enough so you can pinch the fuel line and the engine will stall in around 2sec.
The engine is tuned to your specification but purposely richen the high end since I need to learn to drive more than enjoying the power of PS12
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Old 08-03-2004 | 01:04 AM
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hi surge,
on what lenght you pinch the fuel tube to make the pinch test
dieter
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Old 08-03-2004 | 02:13 AM
  #892  
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Originally posted by Top Gun 777
There is 3 different versions of PS12. TL2111 has IFMAR, Boner has ROAR and 4racer has EFRA.
They are slightly different to meet propriet rulls.
As I know that from 2005 ROAR will lift 4.5 mm exhaust height rull, so start from that point ROAR and IFMAR version will be the same. EFRA still has some restriction and we will follow it.
There is no secret weapon on the different versions, just everything done to meet the rulls. EFRA is more strictly then everything else.
Best regards
Edward
Just to make sure: Efra has no exhaust port restriction either. The only difference to IFMAR is the crankshaf restriction (max 7mm bore, no scoops into the bore.
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Old 08-03-2004 | 08:10 AM
  #893  
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Default PS12 running in

Hi Guys,

I got my hands on some no.5 turbo plugs.

I was able to run the engine for a complete tank, stopped about 4-5 times which to me is normal during the first tank.

Ran another tank just to be sure, engine runs for about 2 mins then cuts out.

I have to get some time to go down to the track & run a few tanks through the engine.

I have the bottom 1 1/4 out, top 4 1/4.

I still have 3 head shims + I'm running 16% fuel.

I'll give an update after my track session.

All the best
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Old 08-03-2004 | 04:03 PM
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Originally posted by 4racer
hi surge,
on what lenght you pinch the fuel tube to make the pinch test
dieter
Hi Dieter, I pinch the tube 2-3 inches from the carb nipple. I try to pinch at the same place each time to make a better comparison of settings.
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Old 08-03-2004 | 04:13 PM
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Originally posted by Surge
Hi Dieter, I pinch the tube 2-3 inches from the carb nipple. I try to pinch at the same place each time to make a better comparison of settings.
Hi Todd. Did you get the book, I sugested to you?
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Old 08-03-2004 | 09:21 PM
  #896  
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Edward, sent you a PM!
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Old 08-03-2004 | 10:05 PM
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No, not yet. Forgot all about it. Too many races to worry about this month
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Old 08-04-2004 | 05:35 AM
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Originally posted by Surge
No, not yet. Forgot all about it. Too many races to worry about this month
This is what you will need for races. Please get it ASAP
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Old 08-04-2004 | 07:05 PM
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Originally posted by Top Gun 777
This is what you will need for races. Please get it ASAP
Did I miss this? Which book are you refering to?
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Old 08-05-2004 | 12:49 AM
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Default PS12

Hi Guys,

Still having some probs with my engine.

I've put two tanks of 16% fuel through the engine. One on tickover & one lightly blipping the throttle.

I have a No. 5 Novarossi plug + 16% fuel

Two shims (Came with 3)

1 1/4 bottom

3 3/4 top


When I start the engine it idles OK but when I blip the throttle a few times it cuts out.

The engine sounds crisp & does not feel like it is loading up with fuel.

I have not run the engine on the track yet, but if it keeps cutting out on the bench after a few blips whats the point?

Can somebody tell me what they did to run the engine in this might help.

MAny Thanks
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