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1HZ and tappets
Posted: Fri Jan 02, 2009 3:49 pm
by me3@neuralfibre.com
My 1HZ has 250K KM on it, and I'm wondering if I should bother pulling the rocker cover and checking the tappets. I know they are bucket and shim, so a bit of a bugger to do.
I'm not worried about looseness, just valve regression into the head that might result in burnt out valves later on.
Anyone know much about these motors to know if the valve gaps close up due to regression, open up due to wear, or do nothing cause it doesn't spin that fast anyway.
Thanx
Paul
Posted: Fri Jan 02, 2009 4:35 pm
by Z()LTAN
not too sure about the design of the head with regards to regression but these may help u with the head work
Posted: Sat Jan 03, 2009 6:30 pm
by Frankenyota
Hey Paul the clearances do close up.
Checked mine 40,000 ago and they were out. About to check them again.
They recommend the clearances to be checked every 20,000kms.
Not a major job, so worth checking.
Best to have a set of digital verniers to measure shim thickness.
Cheers
Matt
Posted: Sun Jan 04, 2009 11:07 am
by bj on roids
Is it making noises or anything, or you just want to do it?
Posted: Sun Jan 04, 2009 7:09 pm
by v8zuki
any idea where i can get shims from to do this to my 1fz
Posted: Sun Jan 04, 2009 7:10 pm
by v8zuki
sorry toyota hasnt been very helpfull all they want to do is do the job for me
Posted: Mon Jan 05, 2009 12:49 am
by Ice
1hz is Renound for valve stretching, ( from a toyota Technician)
same bloke lent me the SST and a bag of shims to do mine when i had it
easy enough job to do when you have done one before
from memory use compressed air to pop the shims out has been about 3 years since i did one
Posted: Mon Jan 05, 2009 12:50 am
by Ice
v8zuki wrote:any idea where i can get shims from to do this to my 1fz
toyota
but you will love how much each shim will cost
Posted: Mon Jan 05, 2009 9:45 am
by bj on roids
Ice wrote:v8zuki wrote:any idea where i can get shims from to do this to my 1fz
toyota
but you will love how much each shim will cost
how much?