BrickBoard Archives
The files contained in this listing have been automatically archived from the active forums. Because the vast majority of posts are now in one place, this archive is considered legacy. You should use the SEARCH feature OR choose your topic and select date tabs within the forum you choose.
Timing Gear Replacement[444-544/63] posted by Jim on
Tuesday, 31 July 2001, at 7:04 p.m.
What is the fundamental symptom that a B18 engine needs its timing gear(s)
replaced? Is it noise? Is it engine performance? Some say use later steel
gears instead of the earlier composite gear-Why? Is the B18 a quiet engine? Mine isn't. Do other owners think the stock radiator(with age)is
adequate or does it benefit from auxillary fan(s)? Always appreciate the
input.
Jim Brennan
Re: Timing Gear Replacement[444-544/63] posted by Pete Fluitman on
Tuesday, 31 July 2001, at 7:26 p.m.
Timing gear failure is denoted by noise, sounds like a badly maintained Diesel. Usually you can feel the slop if you turn the bottom pulley by hand with the plugs out. You will feel resistance as you take up the slop and the camshaft starts to turn.
The B18 tends to be a bit tappety.
Fibre gears are adequate, last ages and it is not an interference engine.
The stock radiator should cope as should the stock fan. Check the neck for the top hose isn't fracturing on the solder joint, it leads to overheating because the system can't pressurise.
Regards
--
Pete
Re: Timing Gear Replacement[444-544/63] posted by Kermit on
Wednesday, 1 August 2001, at 12:24 a.m.
The main problem with the fiber gear is that the other one is steel. Volvo didn't do that for longivity, they did it for quieter running. If you're going to race, rally or hot rod your B18, when it's time to change the gears, use all steel. For normal driving, the one fiber gear is OK, and noticably quieter.
--'71 142E, soon to be an 'S', I guess!
Re: Timing Gear Replacement[444-544/63] posted by chris ulrich on
Wednesday, 1 August 2001, at 12:46 a.m.
The timing gear on my 164 (B30, very similar to B18 only larger
bore and 2 more pistons) went very recently. The motor made a very
loud very scary clank clank clank clank. The motor also ran very
poorly and made not much power. The gear started to break on a
long highway and the motor made sounds when I changed the throttle
that it didn't make before (or since I've replaced the gear).
I replaced the gear with an aluminum gear purchased at napa
auto parts. It was about $140 for a set. I didn't notice much
extra noise from going to the alloy gear. One advantage of the
fiber over the metal gears is that if something goes wrong with
the rest of the motor with a fiber gear the gear is likely to
break where with a metal gear much worse things are likely to
happen because there is no safety valve from the fiber gear.
I went with the alloy gear just because I don't want to have
to open my motor again.
chris