went to do preventative work on my dads 90 740 gle. car sat for a week waiting on the belt. got all the marks lined up and put the new belts on and lined up, cranked the motor a few times by hand and the motor and something kept hitting something. so first thought timing jumped or something and pistons hitting valves etc, i tdc 'd the motor and tried again no avail. so i thought it was unrelated and the torque converter bolts loosened and was hitting the block but that wasnt it. then we took the cams off and the cam carrier and the works, all the valves were closed spun the crank by hand and pistons are still hitting. mind you that all the plugs are also out of the car. spun the motor every which way and theres enough resistance to loosen the crank bolt. so next step is to take the head off which we did and no bent valves or obvious marks noting that the pistons and the valves collided. what i did find is that there was a 2 millimeters thick of carbon built up on the edge of the top of the cylinder, which was causing it to get stuck. after ripping the head out the carbon came out and the head was bolted back on hand tight and the crank was spun and it was free and nothing binding. carbon build up caused the piston to stop shy of tdc??
Timing Belt Turned Ugly
Started by JC 855 GLT-R, Aug 25 2009 04:27 PM
10 replies to this topic
#1
JC 855 GLT-R
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Posted 25 August 2009 - 04:27 PM
1993 Mercedes-Benz 190e 2.3 91k still broken
1996 Volvo 855 GLT-R 320+k and going ( Project GLT-R)
1998 Subaru Outback SUS -Daily Driver
Volvo for LIFE......
#2
Hanks
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Posted 25 August 2009 - 04:39 PM
its a redblock engine? its a non impact engine. pistons cant hit the valves.
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2004 V70R: 3 angle valve job, Phuzzy FMIC, IPD Neutral rear sway
White '96 850 T5M:Black '94 850 T5
#3
JC 855 GLT-R
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Posted 25 August 2009 - 04:41 PM
its a redblock engine? its a non impact engine. pistons cant hit the valves.
its a red block b234f DOHC motor. pistons can hit valves...
1993 Mercedes-Benz 190e 2.3 91k still broken
1996 Volvo 855 GLT-R 320+k and going ( Project GLT-R)
1998 Subaru Outback SUS -Daily Driver
Volvo for LIFE......
#4
mdlimy
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Posted 25 August 2009 - 04:46 PM
its a red block b234f DOHC motor. pistons can hit valves...
+1 gle is dohc, mmmmmm i love that motor.
but damn thats alot of carbon build up, what condition were the cylinder walls in?
#5
JC 855 GLT-R
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Posted 25 August 2009 - 04:53 PM
+1 gle is dohc, mmmmmm i love that motor.
but damn thats alot of carbon build up, what condition were the cylinder walls in?
walls have the usual wear and tear for a motor with 180k car has 280k on its 4th motor.
1993 Mercedes-Benz 190e 2.3 91k still broken
1996 Volvo 855 GLT-R 320+k and going ( Project GLT-R)
1998 Subaru Outback SUS -Daily Driver
Volvo for LIFE......
#6
TyConn
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Delta Bravo
Posted 04 October 2009 - 04:35 PM
its a redblock engine? its a non impact engine. pistons cant hit the valves.
are you high??????
even SOHC have interfering heads
1998 V70 T5 M - FOR SALE, PM ME!
1994 854M Silver on Black
1998 Black on Black S70T51995 855 N/A @174K: Lightning strike, running on 4 cylinders, mixing fluids, holes in the gas tank, 3 different rims, exhaust leak. DD UNTIL 200K.... Killed By Faulty1998 S70 GLT...RIP at 320K
1990 245 DL M47
#7
Dave 54
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Old Man Crew Pledge
Posted 04 October 2009 - 05:12 PM
Wrong,there non interferring, my belt snapped going 40mph, no damage, put new belt on and purrs like a kitten.are you high??????
even SOHC have interfering heads
DAVE
96' 850R
"Life is what happens when you're busy making other plans." John Lennon
96' 850R
"Life is what happens when you're busy making other plans." John Lennon
#8
JC 855 GLT-R
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Posted 04 October 2009 - 06:55 PM
Wrong,there non interferring, my belt snapped going 40mph, no damage, put new belt on and purrs like a kitten.
+1 i had a 87 gle that the belt went on and a 760 T it went on and the motor was fine with a new belt. i think the b234f's were the first for the interference motors..
1993 Mercedes-Benz 190e 2.3 91k still broken
1996 Volvo 855 GLT-R 320+k and going ( Project GLT-R)
1998 Subaru Outback SUS -Daily Driver
Volvo for LIFE......
#9
Yellow95
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Grandpa G
Posted 05 October 2009 - 10:47 PM
Put an IPD cam in there nd it will become an interference motor.
Gary
Gary
1998 S70 T5M, 1998 S70 T5M, 1998 C70 HPT TRADED, 1996 854 Turbo SOLD, 1998 V70 T5M SOLD, 1998 V70 T5 SOLD, 1996 854 SOLD, 1993 244 SOLD, 1991 244 SOLD, 1998 V70 T5M SOLD, 1985 245 Turbo SCRAPPED, 1982 244 Turbo SOLD, 1997 854 GLT SOLD, 1995 854 Turbo SOLD, 1997 855 T5 SOLD, 1996 854 TLA SOLD
#10
Ipd
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Mr. IPD
Posted 05 October 2009 - 11:04 PM
Yup, even some stock ground cams made 8 valve motors interference.
#11
MrWinkey
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Posted 08 October 2009 - 12:10 AM
That would be new to me but suppose anything is possible>Yup, even some stock ground cams made 8 valve motors interference.
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