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Just purchased a 186s motor .
Stipped her down a bit and i am unsure of the cam .
At some time in her life she has been recoed buy GEM, (The date next to the oil filter is stamped 79) .
The top of pistons has 060 (60 thou over size)
On the cam gear it reads GEM and thats all.
Is there any way to tell ifs its normal cam or a 1/3 ect ???
Thanks
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If you have access to a pair of verniers measure the lobes on the cam.Measure the lobe at its max width and write it down then Measure it at its min width and write it down.If you subtract the min width from the max width you are left with the amount of l
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Thanks hqss 256thou lift is a standard cam i take it??
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Yes it is around that. A mild performance cam is about 280 thou lift.One of the LJ Bathurst grind cams had about 304 thou lift. A bit of info on cam selection is here http://www.tighecams.com.au/cars.htm
If you are interested. Paul.
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Have pulled the sump off the 186s and looked at the cam (holden 6 480034)is writen on the cam ????
I measured with the calapers and in mm
short 315mm
large 375mm
but havn,t got thou on the calapers.
Any chance some one could work this out or k
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Hi charlie.
I think those numbers should read 31.5mm & 37.5mm, I don't think the cam is going to have 60mm lift.
Anyway that equals 0.236" at the cam or 0.354" at the valve, sounds fairly small. It really depends how accurate your measurement was.
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If at first you don't succeed, just call it Version 1.0 |
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Measured wilst its in the motor .
bit of trouble fitting the callipers in, so it's probably not the best measurment.
Hopefully some one might know what the numbers mean!!
Thanks
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if any one is interested i have a good usuable genuine 186s (pn7428531)cam for sale open to offers,no gear. also mild speco thomas 347grind, [email protected]",.281"cam lift,.422"@valve,110lsa,with alloy gear,vgc,offers. call dave 0428566683 in vic.
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