IHADAV8.com - Turbo Buick Tech, and Nonsense

Tech Area => General Buick Tech => Topic started by: larrym on January 14 2015, 08:59:00 PM

Title: should I be concerned
Post by: larrym on January 14 2015, 08:59:00 PM: This cam has about 5000 miles on it, there appears to be a pit in the metal a couple thou deep. it looks like it skipped over something there are breaks in the wear pattern.
The roller on the lifter looks goods.
Title: Re: should I be concerned
Post by: larrym on January 15 2015, 12:37:20 PM: I dropped it at the Machinist he was of the opinion run it, he is going to check it for straightness and polish all the journals and lobes.
Title: Re: should I be concerned
Post by: motorhead on January 15 2015, 01:23:23 PM: It looks like one of Comp's low quality cores... and if so it isn't surprising that this damaged occured as the case-hardening doesn't go too deep on those.
Title: Re: should I be concerned
Post by: larrym on January 15 2015, 01:28:20 PM: who else makes an off the shelf roller cam for our cars?
Title: Re: should I be concerned
Post by: motorhead on January 15 2015, 01:40:35 PM: Not sure. I do know that I would go to Cam Motion for any roller cam these days, although a Buick V6 grind would be custom from them. Shelf grinds are very dangerous for the reason shown above.
Title: Re: should I be concerned
Post by: larrym on January 15 2015, 01:45:41 PM: that's what I figured...
Title: Re: should I be concerned
Post by: good2win22 on January 15 2015, 01:48:17 PM: Not sure who makes them but fullthrottle sells roller cams. The one that has peaked my interest is the 210/215
Title: Re: should I be concerned
Post by: Steve Wood on January 15 2015, 02:33:45 PM: I agree with the machinist
Title: Re: should I be concerned
Post by: GavinHunyady on January 15 2015, 05:14:57 PM: Quote from: good2win22 on January 15 2015, 01:48:17 PM
Not sure who makes them but fullthrottle sells roller cams. The one that has peaked my interest is the 210/215
comp
Title: Re: should I be concerned
Post by: motorhead on January 15 2015, 05:45:54 PM: This should help explain the differences in quality available in aftermarket roller cams: http://ls1tech.com/forums/generation-iii-internal-engine/1759417-new-cam-core-comp.html (http://ls1tech.com/forums/generation-iii-internal-engine/1759417-new-cam-core-comp.html)
Title: Re: should I be concerned
Post by: Scoobum on January 15 2015, 10:16:25 PM: Polish it and call it a day.
Title: Re: should I be concerned
Post by: Pyro6 on January 16 2015, 06:03:18 PM: I agree with everybody else, but, what oil and filter are you using?
Title: should I be concerned
Post by: larrym on January 16 2015, 06:18:45 PM: Wix filter and GTX with a bottle of Lucas.
Title: Re: should I be concerned
Post by: larrym on January 16 2015, 07:59:22 PM: 20 bucks and it looks brand new!
Title: Re: should I be concerned
Post by: Scoobum on January 17 2015, 04:36:28 PM: Larry...let me know what lifters you go with...and how you like them. I have all the parts together to build my 'retirement' engine...but I'm on the fence with which brand of lifter to go with.
Title: Re: should I be concerned
Post by: larrym on January 17 2015, 06:59:15 PM: These are morels I purchased cam lifters pushrods chain and springs from Webber a couple years ago and installed it in the motor I had in the car. Great guys to deal with IMO.
I have seen some of the issues guys have had with these lifters and the roller shaft. Mine still appear tight and from what I have read the new ones have a snap ring to ensure the shaft stays in place. They not loud but you can hear them mostly inside the car when rolling to a stop.

Bottom line if I did it again I would use the Morels and probably Webber again.