tips on pulling cam covers? - Page 2 - ZR-1 Net Registry Forums

tomtom72 · 02-13-2009

Don't know about the STP. I do know that @ the Kirban site they say that their additive, ZDDP, has 0.15% of the zinc phosphate stuff. They say that matches the specs for the oil school motor oils from the days of flat tappet cam'ed cars.

All the turbo buick guys that I've met and quite a few guys that have old muscle cars swear by the stuff. Ron Kreigh turned us on to the stuff as he's a fan of the buicks. I'm not a chemist so I don't know what to think.

I used to use stuff called "assembly lube". It looked like grey tooth paste & the active ingredients were molyb-di-sulfide and this zinc phosphate stuff. Smeared plenty of it on the lobes, journals & bearings & lifter bottoms....followed the 20 min./2krpm rules....never had an issue with either cam install that I did on my own stuff...but that was back in the 70's & late 80's on sbc's.

This kind of sucks!

CorvZ061 · 02-14-2009

Quote:

Originally Posted by LGAFF

Are they stock cams? This is getting scary.

Yes, sir, They are stock cams.

ZR1Vette · 02-14-2009

Based on a lot of reviews and comments from knowledgeable folks owning ZR-1s and Lingenfelter C5 & C6s, I use Amsoil AMO High Zinc/Phos Formula in both my Vettes. The ZR-1 for obvious reasons and the C6 has a 366 Lingenfelter set up engine which includes performance cam/valves/high rate valve springs/heads and so on...is now a 7000 rpm engine with 470 WHP and thus the need for the zinc formulation. I am no chemist, but appears that the higher zinc/phosphorus is a must for these type of engines.

Pete · 02-14-2009

Quote:

Originally Posted by CorvZ061

Yes, sir, They are stock cams.

Keep us posted on your findings.

Pete

CorvZ061 · 02-14-2009

Quote:

Originally Posted by Pete

Keep us posted on your findings.

Pete

Got the cam covers off today, tomorrow i'll actually be digging into it, looking at the cams.

ZR1Vette · 02-15-2009

Pics please

LGAFF · 02-15-2009

From an MG site...appears the ZDDP issue has been around for awhile...

http://www.ttalk.info/Zddp.htm

CorvZ061 · 02-15-2009

I didn't get a chance to work on it today, maybe tomorrow after a job interview.

Pete · 02-17-2009

Any updates??

Pete

CorvZ061 · 02-17-2009

Quote:

Originally Posted by Pete

Any updates??

Pete

personal problems are conflicting with working on the Z. I'm not even in Ga anymore, i'm en route to Texas. I don't know when I'll be back, but I'll have updates when I do. Sorry about that.

02-13-2009	#11
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,645	Re: tips on pulling cam covers? Don't know about the STP. I do know that @ the Kirban site they say that their additive, ZDDP, has 0.15% of the zinc phosphate stuff. They say that matches the specs for the oil school motor oils from the days of flat tappet cam'ed cars. All the turbo buick guys that I've met and quite a few guys that have old muscle cars swear by the stuff. Ron Kreigh turned us on to the stuff as he's a fan of the buicks. I'm not a chemist so I don't know what to think. I used to use stuff called "assembly lube". It looked like grey tooth paste & the active ingredients were molyb-di-sulfide and this zinc phosphate stuff. Smeared plenty of it on the lobes, journals & bearings & lifter bottoms....followed the 20 min./2krpm rules....never had an issue with either cam install that I did on my own stuff...but that was back in the 70's & late 80's on sbc's. This kind of sucks! __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

02-14-2009	#13
ZR1Vette Join Date: Dec 2007 Location: Reston, Virginia Posts: 939	Re: tips on pulling cam covers? Based on a lot of reviews and comments from knowledgeable folks owning ZR-1s and Lingenfelter C5 & C6s, I use Amsoil AMO High Zinc/Phos Formula in both my Vettes. The ZR-1 for obvious reasons and the C6 has a 366 Lingenfelter set up engine which includes performance cam/valves/high rate valve springs/heads and so on...is now a 7000 rpm engine with 470 WHP and thus the need for the zinc formulation. I am no chemist, but appears that the higher zinc/phosphorus is a must for these type of engines. __________________ Michael :cheers: [I][SIZE="2"]1990 RED on RED #566[/SIZE][/I] [I][SIZE="2"]WAZOO MEMBER[/I][/SIZE] Last edited by ZR1Vette; 02-14-2009 at 09:14 AM.

02-15-2009	#16
ZR1Vette Join Date: Dec 2007 Location: Reston, Virginia Posts: 939	Re: tips on pulling cam covers? Pics please __________________ Michael :cheers: [I][SIZE="2"]1990 RED on RED #566[/SIZE][/I] [I][SIZE="2"]WAZOO MEMBER[/I][/SIZE]

02-15-2009	#17
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: tips on pulling cam covers? From an MG site...appears the ZDDP issue has been around for awhile... http://www.ttalk.info/Zddp.htm __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

02-15-2009	#18
CorvZ061 Join Date: Nov 2005 Location: Covington, Ga Posts: 62	Re: tips on pulling cam covers? I didn't get a chance to work on it today, maybe tomorrow after a job interview.

02-17-2009	#19
Pete Join Date: Dec 2003 Location: Chicagoland,IL Posts: 2,679	Re: tips on pulling cam covers? Any updates?? Pete __________________ '91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage