SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: steele211 on August 10, 2010, 03:40:03 PM

Title: valve adjustment
Post by: steele211 on August 10, 2010, 03:40:03 PM: so here i am trrying to adjust my valves and when i do it the way everyone tells me i lose compression. i am doing the whole zero lash plus 1/2 turn am i doing something wrong? Please help.
Title: Re: valve adjustment
Post by: just squirtin on August 10, 2010, 04:21:48 PM: solids or hydraulic-either one go to centuryperformance.com/adjusting-valve-lash
Title: Re: valve adjustment
Post by: enginedoctor on August 10, 2010, 04:32:13 PM: I THINK THE EXPERT ON THIS SUBJECT IS " LUCKY STUFF"..I AINT TOUCHING THIS SUBJECT :o
Title: Re: valve adjustment
Post by: Howard19 on August 10, 2010, 05:41:41 PM: Ah Dave I know you know how ;)
Title: Re: valve adjustment
Post by: enginedoctor on August 10, 2010, 05:46:47 PM: Quote from: Howard19 on August 10, 2010, 05:41:41 PM
Ah Dave I know you know how ;)

SORRY MY ASS GOT CHEWED ON THIS DELIO ;D
Title: Re: valve adjustment
Post by: jet boat performance on August 10, 2010, 07:59:48 PM: Quote from: just squirtin on August 10, 2010, 04:21:48 PM
solids or hydraulic-either one go to centuryperformance.com/adjusting-valve-lash
Agreed this is easy to follow and will get you started , we do it differently but I'm too tired too type it Tom

http://www.centuryperformance.com/adjusting-valve-lash-spg-149.html (http://www.centuryperformance.com/adjusting-valve-lash-spg-149.html)
Title: Re: valve adjustment
Post by: IRRebel on August 10, 2010, 11:56:01 PM: I think everyone has a little bit different way to do it. I did it with Terry last month on a BBC, and he did it differently than I ever did, but worked out great and very quick! Comp Cams manual says a totally rediculous set of steps, and I found a few more engine specific (and complicated) ones on the internet to accomplish the same basic goal.

Goal is the same in all cases, make ABSOLUTELY sure the lifter to the valve you're about to adjust is on the cam base circle, it's that simple. It really isn't like launching a missile. ;)

Ray

PS, FWIW, if you're getting the valves adjusted somewhere even close to right and you're losing compression, I'd be thinking you're cam timing is WAYYYYY out......like shot timing set, or not timed correctly to begin with. Just my .02
Title: Re: valve adjustment
Post by: HDriderTH on August 11, 2010, 07:14:53 AM: On Jay's motor trhe cam was three teeth out, 45*. It ran but bent ALL intake P rods. It wasnt running so we adjusted the valves like this:

Turn motor till intake almost closed, adjust Ex.
Ex just opening adjust intake
Title: Re: valve adjustment
Post by: steele211 on August 11, 2010, 07:50:03 AM: what would be the best stupid people way to check the condition of the timing set?
Title: Re: valve adjustment
Post by: IRRebel on August 11, 2010, 12:20:09 PM: Quote from: steele211 on August 11, 2010, 07:50:03 AM
what would be the best stupid people way to check the condition of the timing set?

Pull the timing cover....... :screwy:

Ray
Title: Re: valve adjustment
Post by: farmergord on August 11, 2010, 02:04:54 PM: thier cheap just pull the timing cover and put in a new set