Cam removal/install - Page 3 - Competition Diesel.Com

jhastings · 12-29-2016, 11:54 PM

Do I do this with the head torqued down or just loosly set on? Seems like in the Hamilton cam video they have very light springs on there?

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Win slow · 12-30-2016, 12:17 PM

The light spring are nice you can roll the motor around at tdc on overlap and push the valve open to check clearance this is how i do it. Remember that ptv gets closest right before and right after tdc. I like to be close to equal overlap if possible that should give you the most clearance and minimal reversion of exhaust gases.

Win slow · 12-30-2016, 12:20 PM

the head should be torqued the gasket must be crushed to be accurate you can use an old gasket if you think you will need to have the head off again.

jhastings · 01-01-2017, 07:47 PM

So I measured the copper head gasket that was in the motor this cam came out of and it was 0.100" total thickness. The old stock head gasket out of my stock motor measure 0.065" (sound correct?) Leads me to believe ptvc was an issue.

My piston protrusion on #1 is 0.028". Couple that with 0.041" valve face depth, I don't think this cam will "drop in" with appropriate ptvc.

I'm thinking about getting my stock cam polished and selling the high lift Enterprise cam to somebody who wants/needs an aggressive cam.

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Destroked 450 · 01-01-2017, 08:10 PM

I've got .036 protrusion with .050 valve depth, I'm running a colt stage three on a .020 over Cummins head gasket, should be .081 thick.
You've got more lift but not as much duration so you shouldn't have a problem, but I'd do a ptv check using the old gasket, if it's a little close get a .010 over head gasket.

Win slow · 01-03-2017, 12:42 PM

That cam has a small duration at .020" i think it should fit you may just need to move it a bit with an offset key or even a tooth. Its your call but i think you would be crazy to run a stock cam over that. If u want to sell it pm me with a price. that cam should work great on around a 100 degree intake center. It would be a sweat set up with over sized tappets 60# springs ti retainers and custom pushrods. You would also want to watch coil bind on the exhaust as that much lift will be getting close with 60# springs

12-29-2016, 11:54 PM	#41
jhastings Name: jhastings Title: Diesel Enthusiast Status: Not Here Join Date: May 2011 Member`s Gallery Posts: 129	Do I do this with the head torqued down or just loosly set on? Seems like in the Hamilton cam video they have very light springs on there? Sent from my XT1254 using Tapatalk __________________ 1998 2500 12V SLT QCLB 5-speed 4X4 3.54, LSD F+R, 62/68/12, DDP2, 4"exhaust,841 Pump, 16* timing, #10 full back, 3K GSK, 191's, Oregon Cam, 13 " Con-O 241HD, ARP Studs, 60# over springs, 4" inline pacbrake, 226K.

01-01-2017, 07:47 PM	#44
jhastings Name: jhastings Title: Diesel Enthusiast Status: Not Here Join Date: May 2011 Member`s Gallery Posts: 129	So I measured the copper head gasket that was in the motor this cam came out of and it was 0.100" total thickness. The old stock head gasket out of my stock motor measure 0.065" (sound correct?) Leads me to believe ptvc was an issue. My piston protrusion on #1 is 0.028". Couple that with 0.041" valve face depth, I don't think this cam will "drop in" with appropriate ptvc. I'm thinking about getting my stock cam polished and selling the high lift Enterprise cam to somebody who wants/needs an aggressive cam. Sent from my XT1254 using Tapatalk __________________ 1998 2500 12V SLT QCLB 5-speed 4X4 3.54, LSD F+R, 62/68/12, DDP2, 4"exhaust,841 Pump, 16* timing, #10 full back, 3K GSK, 191's, Oregon Cam, 13 " Con-O 241HD, ARP Studs, 60# over springs, 4" inline pacbrake, 226K.

01-01-2017, 08:10 PM	#45
Destroked 450 Name: Destroked 450 Title: Too Much Time Status: Not Here Join Date: Mar 2015 Location: Harned,Ky. Member`s Gallery Posts: 340	I've got .036 protrusion with .050 valve depth, I'm running a colt stage three on a .020 over Cummins head gasket, should be .081 thick. You've got more lift but not as much duration so you shouldn't have a problem, but I'd do a ptv check using the old gasket, if it's a little close get a .010 over head gasket. __________________ Mine: 04 F-450 sc 4x4 fb drw 5.9 12v 215 ppump, zf6, kdp fixed, 3k gsk, AFC Live, super b single, pusher intake, d-celerator ebrake Hers:2018 F-150 sc 4x4 5.0 Farm trucks: 01 Z71 ext cab, 95 S10, 93 F-800 8.3 Cummins, 87 AM General 5 ton

12-30-2016, 12:17 PM	#42
Win slow Name: Win slow Title: Green Behind the Ears Status: Not Here Join Date: Jan 2015 Location: CT Member`s Gallery Posts: 87	The light spring are nice you can roll the motor around at tdc on overlap and push the valve open to check clearance this is how i do it. Remember that ptv gets closest right before and right after tdc. I like to be close to equal overlap if possible that should give you the most clearance and minimal reversion of exhaust gases.

12-30-2016, 12:20 PM	#43
Win slow Name: Win slow Title: Green Behind the Ears Status: Not Here Join Date: Jan 2015 Location: CT Member`s Gallery Posts: 87	the head should be torqued the gasket must be crushed to be accurate you can use an old gasket if you think you will need to have the head off again.

01-03-2017, 12:42 PM	#46
Win slow Name: Win slow Title: Green Behind the Ears Status: Not Here Join Date: Jan 2015 Location: CT Member`s Gallery Posts: 87	That cam has a small duration at .020" i think it should fit you may just need to move it a bit with an offset key or even a tooth. Its your call but i think you would be crazy to run a stock cam over that. If u want to sell it pm me with a price. that cam should work great on around a 100 degree intake center. It would be a sweat set up with over sized tappets 60# springs ti retainers and custom pushrods. You would also want to watch coil bind on the exhaust as that much lift will be getting close with 60# springs