Cam timing
Posted: Sun Apr 10, 2011 5:36 pm
Hello All,
just escaped from a heavy bout of grouting and thought I'd start setting my engine up. The setting I have from Kent cams is 108deg ATDC with inlet and exhaust 14 and 16 thou respectively. I found it a bit awkward whilst everything is in bits to achieve a decent enough setting on the crank , so having set it using a timing disc on the front pulley,having replaced the front cover and knocked up a pointer, I set about measuring the distance the pistons had travelled down the bores. The readings I have are : No's 1+2 2.292 and 2.283 inches and 3+4 1.212 for both. I just wondered if these seem right to anyone and if its a method that is accurate enough to use for setting up valve timing. As I type this it has just dawned on me why I have a 5thou difference between 1+4, having taken the crank and rods for grinding and balancing it was found that one big end,No4, had gone oval and was reclaimed.
Regards
Jason.
just escaped from a heavy bout of grouting and thought I'd start setting my engine up. The setting I have from Kent cams is 108deg ATDC with inlet and exhaust 14 and 16 thou respectively. I found it a bit awkward whilst everything is in bits to achieve a decent enough setting on the crank , so having set it using a timing disc on the front pulley,having replaced the front cover and knocked up a pointer, I set about measuring the distance the pistons had travelled down the bores. The readings I have are : No's 1+2 2.292 and 2.283 inches and 3+4 1.212 for both. I just wondered if these seem right to anyone and if its a method that is accurate enough to use for setting up valve timing. As I type this it has just dawned on me why I have a 5thou difference between 1+4, having taken the crank and rods for grinding and balancing it was found that one big end,No4, had gone oval and was reclaimed.
Regards
Jason.