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GRracing Modified engine

Old 07-09-2007, 02:55 AM
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Default GRracing Modified engine

This engine is GRracing's OS 12TZ-3(P) Team Version Fully Modified engine.
Attached Thumbnails GRracing Modified engine-001.jpg   GRracing Modified engine-002.jpg   GRracing Modified engine-003.jpg   GRracing Modified engine-004.jpg   GRracing Modified engine-005.jpg  

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Old 07-09-2007, 02:59 AM
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Originally Posted by handpiece View Post
This engine is GRracing's OS 12TZ-3(P) Team Version Fully Modified engine.
My my ... that crankshaft looks as if its designed to go fast and then go bang! Must be really fast though right?
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Old 07-09-2007, 05:09 AM
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Default MOD.

Nice work. How about the performance? Life span? Do you have any data about the power?
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Old 07-09-2007, 05:13 AM
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Yes. This engine is really fast and do tourqefull.

Will raise the remainder picture.

Rear bearing is ceramic(GS5 Class).
Attached Thumbnails GRracing Modified engine-018.jpg   GRracing Modified engine-010.jpg   GRracing Modified engine-011.jpg   GRracing Modified engine-012.jpg  
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Old 07-09-2007, 05:34 AM
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Default mod.

Are you modyfing only Os Engines?
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Old 07-09-2007, 05:38 AM
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Other engines and comparison test result output are thought

that it is over 1.75ps.

So, Think that is fine life-time.
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Old 07-09-2007, 05:39 AM
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No. I modifing all engines.
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Old 07-09-2007, 05:50 AM
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Originally Posted by handpiece View Post
No. I modifing all engines.
1.75 hp is a lot . Did you get this result from dyno? Which pipe did you use? Some works looks like zeppin mod. Tz. But acctaully the crankshaft is really intresting! I would surf in your web site. But its Korean and I cant understand anything.

Do you planning a english version?
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Old 07-09-2007, 06:13 AM
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I am sorry. Soon english version plans to make.

It was not dyno test. It was driving test.
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Old 07-09-2007, 07:02 AM
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Originally Posted by handpiece View Post
I am sorry. Soon english version plans to make.

It was not dyno test. It was driving test.
What is the runtime from this TZ.
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Old 07-09-2007, 07:30 AM
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Milyang Circuit : Speed Layout Style


MTX-4 : Normal Gear Ratio
Byron 25%, OS No.7 Plug, 0.25mm Simm
Head Temperture 110~118℃
Runtime => 5m20s(7s)

G4S : 1ST Normal Gear Ratio
2ST 25T
Odnnell 25%, OS No.8 Plug, 0.25mm Simm
Head Temperture 116~122℃
Runtime => 5m27(5s)
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Old 07-09-2007, 07:46 AM
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i am GRracing Driver..

i am satisfied with very good torque and awesome top speed..

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Old 07-09-2007, 09:01 AM
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Originally Posted by gansei View Post
i am GRracing Driver..

i am satisfied with very good torque and awesome top speed..

Gansei,

Is the crackshaft black coated? And the crankcase. Is this the regular Tz crankase wich is blackcoated . or the crankcase from os speed.
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Old 07-09-2007, 09:10 AM
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Originally Posted by CIMRI View Post
Gansei,

Is the crackshaft black coated? And the crankcase. Is this the regular Tz crankase wich is blackcoated . or the crankcase from os speed.
Is the crackshaft black coated?

-> yes.. But now.. only coating in crankshaft head by GR Racing

and.. the crankcase is os 5port crankcase (OS coated)
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Old 07-09-2007, 09:25 AM
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[QUOTE=gansei;3467973]Is the crackshaft black coated?

-> yes.. But now.. only coating in crankshaft head by GR Racing

and.. the crankcase is os 5port crankcase (OS coated)[/QUOTE

awsome wrk. did you drove other engines from Gr. can you advise me another work from him. acctually ill try one of them. but dont now which is better? and cant understand from korean website! Im owner from
os speed specII. and nova 353. I was planning to buy another.
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