Serpent 710
05-28-2004 | 12:49 AM
Tech Fanatic
Joined: Mar 2003
Posts: 783
Re: Sandblasted piston
Originally posted by pelos
I have been living so long with the nightmare of ruining my wonderful NSR12S3... now is happened.
Maybe I used a too hot plug (6TC with 18C temp and 16%nitro) or maybe I was too lean (about 4 1/4 turn out HSN).
The plug broke and filament scratched piston side. Top of piston is also sandblasted. See pics
The motor run about 8/9 liter.
What can I do?
I have been living so long with the nightmare of ruining my wonderful NSR12S3... now is happened.
Maybe I used a too hot plug (6TC with 18C temp and 16%nitro) or maybe I was too lean (about 4 1/4 turn out HSN).
The plug broke and filament scratched piston side. Top of piston is also sandblasted. See pics
The motor run about 8/9 liter.
What can I do?
for you.If it was my engine, I will clean it off, rebuild it and sell it cheap.
Coz in my opinion, it will not recover even P/S+rod is new. The con-rod(big end) and the bearing is suffer from lots a vibration.
05-28-2004 | 01:52 AM
Tech Elite
Joined: Sep 2002
Posts: 2,071
From: Singapore, Thailand, MARS, MOON
Re: Sandblasted piston
Originally posted by pelos
I have been living so long with the nightmare of ruining my wonderful NSR12S3... now is happened.
Maybe I used a too hot plug (6TC with 18C temp and 16%nitro) or maybe I was too lean (about 4 1/4 turn out HSN).
The plug broke and filament scratched piston side. Top of piston is also sandblasted. See pics
The motor run about 8/9 liter.
What can I do?
I have been living so long with the nightmare of ruining my wonderful NSR12S3... now is happened.
Maybe I used a too hot plug (6TC with 18C temp and 16%nitro) or maybe I was too lean (about 4 1/4 turn out HSN).
The plug broke and filament scratched piston side. Top of piston is also sandblasted. See pics
The motor run about 8/9 liter.
What can I do?
05-28-2004 | 02:14 AM
Tech Fanatic
Joined: Feb 2004
Posts: 801
From: Johannesburg, South Africa
Re: Re: Sandblasted piston
Originally posted by GoldFinger
Feeling sorry for you.
If it was my engine, I will clean it off, rebuild it and sell it cheap.
Coz in my opinion, it will not recover even P/S+rod is new. The con-rod(big end) and the bearing is suffer from lots a vibration.
Feeling sorry
for you.If it was my engine, I will clean it off, rebuild it and sell it cheap.
Coz in my opinion, it will not recover even P/S+rod is new. The con-rod(big end) and the bearing is suffer from lots a vibration.
05-28-2004 | 02:16 AM
Tech Fanatic
Joined: Feb 2004
Posts: 801
From: Johannesburg, South Africa
Re: Re: Re: Sandblasted piston
Originally posted by BaxterC
OW... I feel for you too, what fuel were you using (% Nitro) and what heat plug were you using?
OW... I feel for you too, what fuel were you using (% Nitro) and what heat plug were you using?
05-28-2004 | 02:39 AM
Tech Elite
Joined: Dec 2003
Posts: 4,104
From: Va Va Voom!
Re: Re: Re: Re: Re: Re: Re: Re: Clutch
Originally posted by InitialD
Titanium does not have a good wear characteristic. We need HUDY Spring steel.
Titanium does not have a good wear characteristic. We need HUDY Spring steel.
High performance parts does not last usually.If I want the car light then that's the "price" I'll have to pay. I'm not expecting the Ti shafts to allow faster rotation since we know that the shafts are too small in diameter to make a difference to the rotational mass.
Of course, like you said, if Serpent comes out with hollow shafts from Hudy Spring Steel, that would be perfect! Light AND long lasting.
This last statement somehow does not sound right for a business
, Serpent has to make money somehow too. The other thing I'm hoping that will come to those who wait is the KHM .12 engine! 
05-28-2004 | 02:57 AM
Tech Elite
Joined: Jun 2003
Posts: 4,985
From: i love my job
Re: Sandblasted piston
Originally posted by pelos
I have been living so long with the nightmare of ruining my wonderful NSR12S3... now is happened.
Maybe I used a too hot plug (6TC with 18C temp and 16%nitro) or maybe I was too lean (about 4 1/4 turn out HSN).
The plug broke and filament scratched piston side. Top of piston is also sandblasted. See pics
The motor run about 8/9 liter.
What can I do?
I have been living so long with the nightmare of ruining my wonderful NSR12S3... now is happened.
Maybe I used a too hot plug (6TC with 18C temp and 16%nitro) or maybe I was too lean (about 4 1/4 turn out HSN).
The plug broke and filament scratched piston side. Top of piston is also sandblasted. See pics
The motor run about 8/9 liter.
What can I do?
Just get the P/S replaced...and be a little more careful with the tune...
05-28-2004 | 04:21 AM
Tech Regular
iTrader: (3)
Joined: Jul 2003
Posts: 315
From: Ottawa, Ontario, Canada
Re: Re: Team Tamale Digital Clutch Tool
Originally posted by PSI Racing
$140 isn't too bad.
I would like to try one out before investing on one though.
$140 isn't too bad.
I would like to try one out before investing on one though.
Once I tried the tool, I was immediately in love with it.
05-28-2004 | 04:31 AM
Tech Prophet
Joined: Feb 2002
Posts: 19,679
From: MORDOR
Re: Sandblasted piston
Originally posted by pelos
I have been living so long with the nightmare of ruining my wonderful NSR12S3... now is happened.
I have been living so long with the nightmare of ruining my wonderful NSR12S3... now is happened.
05-28-2004 | 04:32 AM
Tech Prophet
Joined: Feb 2002
Posts: 19,679
From: MORDOR
Re: Re: Re: Re: Re: Re: Re: Re: Re: Clutch
Originally posted by Sow&Steady
I'm not expecting the Ti shafts to allow faster rotation since we know that the shafts are too small in diameter to make a difference to the rotational mass.
I'm not expecting the Ti shafts to allow faster rotation since we know that the shafts are too small in diameter to make a difference to the rotational mass.
Originally posted by Sow&Steady
The other thing I'm hoping that will come to those who wait is the KHM .12 engine!
The other thing I'm hoping that will come to those who wait is the KHM .12 engine!
Are you planning to get one?
05-28-2004 | 04:41 AM
Tech Fanatic
Joined: Mar 2004
Posts: 894
From: Northern Ireland
Re: Re: Re: Re: Re: Re: Re: Re: Re: Clutch
Originally posted by Sow&Steady
Yup, you're right, that is why F1 cars literally lasts only 1 weekend's race. High performance parts does not last usually.
If I want the car light then that's the "price" I'll have to pay. I'm not expecting the Ti shafts to allow faster rotation since we know that the shafts are too small in diameter to make a difference to the rotational mass.
Of course, like you said, if Serpent comes out with hollow shafts from Hudy Spring Steel, that would be perfect! Light AND long lasting.
This last statement somehow does not sound right for a business, Serpent has to make money somehow too. The other thing I'm hoping that will come to those who wait is the KHM .12 engine!
Yup, you're right, that is why F1 cars literally lasts only 1 weekend's race.
High performance parts does not last usually.If I want the car light then that's the "price" I'll have to pay. I'm not expecting the Ti shafts to allow faster rotation since we know that the shafts are too small in diameter to make a difference to the rotational mass.
Of course, like you said, if Serpent comes out with hollow shafts from Hudy Spring Steel, that would be perfect! Light AND long lasting.
This last statement somehow does not sound right for a business
, Serpent has to make money somehow too. The other thing I'm hoping that will come to those who wait is the KHM .12 engine!
05-28-2004 | 04:45 AM
Tech Initiate
Joined: Apr 2003
Posts: 46
From: venice
Re: Sandblasted piston
Originally posted by InitialD
Just like what crashed_1 suggested, perhaps you could put new piston / sleeve in together with a new conrod. How are the other parts like the bearing?
Just like what crashed_1 suggested, perhaps you could put new piston / sleeve in together with a new conrod. How are the other parts like the bearing?
Anyway P/S + conrod + rear bearing is 160 USD at mushroom, I will think over, don't know if it is worth since for 260 USD I can have a new engine...
BTW how do you take the rear bearing out? Heat gun and ...?
05-28-2004 | 04:55 AM
Tech Fanatic
Joined: Oct 2002
Posts: 778
Re: Re: Sandblasted piston
Originally posted by pelos
Front bearing is ok, rear one (I mean the one inside the crankshaft) has something inside: you can feel it sometimes turning by hand. But may be I can take it away since you do not feel it constantly.
Anyway P/S + conrod + rear bearing is 160 USD at mushroom, I will think over, don't know if it is worth since for 260 USD I can have a new engine...
BTW how do you take the rear bearing out? Heat gun and ...?
Front bearing is ok, rear one (I mean the one inside the crankshaft) has something inside: you can feel it sometimes turning by hand. But may be I can take it away since you do not feel it constantly.
Anyway P/S + conrod + rear bearing is 160 USD at mushroom, I will think over, don't know if it is worth since for 260 USD I can have a new engine...
BTW how do you take the rear bearing out? Heat gun and ...?