Anyone know roughly what to set the lash on a Solid holden 6 cam at? im unsure of the cam specs and dont have the cam card as i bought the engine off a mate who dosent remember.
i was thinking setting them to about 0.020 cold, which should open out to about 0.022 hot.
this sound about right?
202 solid cam valve lash
Started by
_why-psi_
, Dec 01 2007 09:37 AM
19 replies to this topic
#2
rodomo
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Posted 01 December 2007 - 05:08 PM
Grey motors are .008" and .012" (showing my age) 
#3
_hsv484_
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Posted 02 December 2007 - 03:59 PM
0.12 and 0.14 was what i was running on solid cam in red 202 per what my cam card said
#5
FastEHHolden
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Posted 02 December 2007 - 06:12 PM
Escorts were 18 thou inlet and 22 exhaust..set cold.
#6
boomfunk
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Posted 02 December 2007 - 07:07 PM
mine was a loose 18 thou cold...
i never has the cam card so i set it to where it went the best.
that cam was an apparent stage 3, if yours is big..or realy small then i would say its diff
apparently big solids have larger gap..like upwards... 22 thou
isnt it when its hots the gap closes up?.. due to expansion.. thats how i've always known it anyway
i never has the cam card so i set it to where it went the best.
that cam was an apparent stage 3, if yours is big..or realy small then i would say its diff
apparently big solids have larger gap..like upwards... 22 thou
isnt it when its hots the gap closes up?.. due to expansion.. thats how i've always known it anyway
#7
_v8slrtorana_
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Posted 02 December 2007 - 08:15 PM
Is the engine in the car yet?
If not, remove the back welsh plug to see if there is anything printed on the back of the cam.
Too tight, and you will grind the lobes off the cam.
If not, remove the back welsh plug to see if there is anything printed on the back of the cam.
Too tight, and you will grind the lobes off the cam.
#8
_why-psi_
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Posted 02 December 2007 - 09:39 PM
Top Idea v8slrtorana!
tomorrow morning i shall bust out the hammer and punch.
tomorrow morning i shall bust out the hammer and punch.
#9
rodomo
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Posted 03 December 2007 - 12:14 AM
Tip:
Exhaust are usually looser than inlet as the exhaust components (especially the valve) get hotter and expand more decreasing the clearence.
Also gives exhaust valve more time seated to displace heat.
Exhaust are usually looser than inlet as the exhaust components (especially the valve) get hotter and expand more decreasing the clearence.
Also gives exhaust valve more time seated to displace heat.
#10
gtrboyy
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Posted 03 December 2007 - 07:20 AM
Think my old solid cam was 22 thou & 20 thou...engine hot.
#11
_why-psi_
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Posted 03 December 2007 - 08:43 AM
got the welshplug out, was a prick of a job. nothing stamped on the back of the cam :(
#12
_FCCOOL_
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Posted 22 May 2010 - 05:32 PM
same here, mine is solid, 22 20 hotThink my old solid cam was 22 thou & 20 thou...engine hot.
#13
_oldjohnno_
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Posted 22 May 2010 - 05:42 PM
Too tight, and you will grind the lobes off the cam.
Er, no. Too tight and it won't run very well. Way too tight and it won't run at all (cos you'll have valves being held open).
I wouldn't stress too much over it; if you set it at about 0.020" you'll be safe. There's surprisingly little change in the lash between hot and cold; I always set them cold simply because I don't like to burn my fingers..
#14
_BlownUC202_
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Posted 22 May 2010 - 08:59 PM
my old solid cam in my 202 didnt have the spec on it so i just set it the same as a caterpillar 3516 engine which is 15 inlet and 30 exhaust and it ran fine then when i bought my new solid cam that was what the specs were.
#15
_FCCOOL_
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Posted 22 May 2010 - 09:36 PM
its supposed to be best to set them up hot but i guess you have to be real quick, i cant ever get it rite, I just about burn myself on the first rockers and the engine feels just slightly warm when i am at the last rockers.
Too tight, and you will grind the lobes off the cam.
Er, no. Too tight and it won't run very well. Way too tight and it won't run at all (cos you'll have valves being held open).
I wouldn't stress too much over it; if you set it at about 0.020" you'll be safe. There's surprisingly little change in the lash between hot and cold; I always set them cold simply because I don't like to burn my fingers..
last time i did my rockers hot i figured i took too long and ended up e doing them again a week later cold
to make things a bit easier i made a bump switch witch plugs onto the back of the alternator and onto the starter motor, you just tap the button quick to slightly move it or hit it longer for bigger turns
#16
_oldjohnno_
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Posted 22 May 2010 - 09:51 PM
its supposed to be best to set them up hot but i guess you have to be real quick, i cant ever get it rite, I just about burn myself on the first rockers and the engine feels just slightly warm when i am at the last rockers.
last time i did my rockers hot i figured i took too long and ended up e doing them again a week later cold
to make things a bit easier i made a bump switch witch plugs onto the back of the alternator and onto the starter motor, you just tap the button quick to slightly move it or hit it longer for bigger turns
Another way to save burnt fingers is to just set one intake and one exhaust hot. Let the engine cool right down and then remeasure the clearance on those two valves; that's the cold setting that you can use from then on. But don't be surprised if it's within a couple of thou of the hot setting anyway..
Valve clearance is one of those things some people get all anal about but really if it's plus or minus a few thou it'll be fine..
#17
_Ned Loh_
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Posted 06 November 2013 - 11:09 AM
Another way to save burnt fingers is to just set one intake and one exhaust hot. Let the engine cool right down and then remeasure the clearance on those two valves; that's the cold setting that you can use from then on. But don't be surprised if it's within a couple of thou of the hot setting anyway..
Valve clearance is one of those things some people get all anal about but really if it's plus or minus a few thou it'll be fine..
old thread I know, but I just did this. Got the following
In. 12 thou hot = 8 thou cold
Ex. 14 thou hot = 12 thou cold
The exhaust is pretty much what I was expecting, but the intake change of 4 thou is more than I anticipated. Engine is an alloy headed 202. Black EVL valves.
Plausible, or remeasure?
#18
_oldjohnno_
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Posted 06 November 2013 - 07:31 PM
I assume the alloy head would expand more than the valve, increasing the clearance. You'd expect the exhaust valve to be a lot hotter than the intake so the difference in lash would be smaller on that side. What you measured sounds reasonable to me.
#20
gtrboyy
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Posted 08 November 2013 - 11:07 AM
Trick my mate did for me was to mark the balancer with white marker so I'd just quickly turn engine over by hand untill a mark lined up then do rockers lol.
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