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K100-forum.com » Technical, repair and troubleshooting » Engine and transmission » Valves bent possibility

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1Back to top Go down   Valves bent possibility Empty Valves bent possibility Fri May 22, 2015 6:01 am

VPutin

VPutin
active member
active member
Hi everybody,
start to repair my lady after last year accident.
Where the valve cover was broken and chain also.

So, what a chance, that valves was not bent in such case?

Valves bent possibility User1912

    

2Back to top Go down   Valves bent possibility Empty Re: Valves bent possibility Fri May 22, 2015 6:26 am

92KK 84WW Olaf

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Life time member
Life time member
That chain looks intact to me. Have a closer look, but seems ok.

What worries me more is bits ending up inside where they shouldn't be.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 59,460 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

3Back to top Go down   Valves bent possibility Empty Re: Valves bent possibility Fri May 22, 2015 6:40 am

VPutin

VPutin
active member
active member
92KK 84WW Olaf wrote:That chain looks intact to me. Have a closer look, but seems ok.

What worries me more is bits ending up inside where they shouldn't be.
unfortunately it was broken. (this photo was made on accident scene, when bike was lifted up, chain was obviously broken)
>bits ending up inside where they shouldn't be
sorry, but I didn't understand, was is about.

    

4Back to top Go down   Valves bent possibility Empty Re: Valves bent possibility Fri May 22, 2015 6:55 am

Rick G

Rick G
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If the chain was broken then there is a very high probability there are some valves bent.
A compression test will tell if any are bent. When a valve is bent there will be almost zero compression.
Valves for those engines are expensive if you can find one. Try to find a complete engine it will be the easy way to get back on the road.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 2004 K1200GT 1999 K1100 LT.
    

5Back to top Go down   Valves bent possibility Empty Re: Valves bent possibility Fri May 22, 2015 7:41 am

VPutin

VPutin
active member
active member
But, to test comprassion, I have to replace chain first?

    

6Back to top Go down   Valves bent possibility Empty Re: Valves bent possibility Fri May 22, 2015 9:24 am

Two Wheels Better

Two Wheels Better
Moderator
Moderator
With that much externally visible damage I would have the cylinder head off, as well as the oil pan, for a careful internal look before thinking any thoughts of spinning over the motor.


__________________________________________________

1970 R60/5, '77 R75/7-R100, '85 K100, '87 K75C, '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R, '04 R1150RT, '05 K1200S, #1 '06 K1200R, #2 '06 K1200R(renovated), '07 K1200R, '09 K1300GT(refreshed), '13 R1200RT-P & 2022 S1000XR(sold)

All of life is a foreign country. - Jack Kerouac, author (1922 - 1969)
    

7Back to top Go down   Valves bent possibility Empty Re: Valves bent possibility Sat May 23, 2015 8:43 pm

K75cster

K75cster
Life time member
Life time member
The Pic looks like the camchain is intact and the camchain guide has been broken as well as the tappet cover, either way there must be foreign matter in the engine by now, I'd pull it apart before anything else, off with the tappet cover and the camchain cover and see what may have went inside the engine.


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

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