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#16706 05/16/2003 2:45 AM | Joined: May 2003 Posts: 8 Member | | Member Joined: May 2003 Posts: 8 | HI...... CAN YOU USE SOLID LIFTERS ON A 235 WITH HYDRALIC LIFTERS WILL IT HARM IT............  [B][/B] [img]http://[/img] | | |
#16707 05/16/2003 6:48 AM | Joined: Apr 2003 Posts: 140 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2003 Posts: 140 | A qualified yes.
On most engines (well, OK, Chevy V8s) it's not a problem. Just remember when you set the valves. 8-)
As far as I know you can do it on the 235 as well. I'm not speaking from personal experience though.
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#16708 05/16/2003 3:37 PM | Joined: Jul 2001 Posts: 12 Member | | Member Joined: Jul 2001 Posts: 12 | Frank I have a 62 1/2 ton Chevy Truck with a 235 six that I installed solid lifters in after the others kept leaking down. Ran the engine over 100k miles with no problem. I think the secret is to keep the lifters adjusted correctly. Sometimes the hydros just don't want to work right-especially in cold weather-leaked down and missed like crazy! Maybe someone has other suggestions? | | |
#16709 05/16/2003 6:20 PM | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | emdabbs, Are you saying you ran solids on a hydraulic cam?
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#16710 05/17/2003 5:15 AM | Joined: Jul 2000 Posts: 962 Shop Shark | | Shop Shark Joined: Jul 2000 Posts: 962 | The problem is that the cam profiles are ground different on a hyd cam vs a solid cam. The opening and closing ramps, lift, duration, etc are ground different. thats not to say it won't work, but the engine performance could change, or valvetrain adjustment problems or damage could result. More apparent in higher-revving v8s where spring pressures, RPM and oiling are different.
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#16711 05/17/2003 4:22 PM | Joined: Dec 2001 Posts: 1,745 Member | | Member Joined: Dec 2001 Posts: 1,745 | Would Emdabbs's 62 1/2 ton have come with hydraulics in a truck? Or might someone have put hydraulic lifters on his original solid cam? Hence his bad luck with the hydraulics? I thought all truck 235's had solids, but later ones were drilled for hydraulics?
54 3100 with 235
62 flatbed dump C60 with 261
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#16712 05/19/2003 3:55 AM | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | To answer Tonys question, Chev trucks to my knowledge never came with hyd lifters. They would have had solids and an aluminum cam gear. Starting in 1958 all blocks are drilled for hydraulics even if solids were used, so a hydraulic cam could be installed.
My question for emdabbs is if he used solids on a hyd cam, because I have never heard of this working.
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#16713 05/21/2003 2:57 PM | Joined: Jul 2001 Posts: 12 Member | | Member Joined: Jul 2001 Posts: 12 | Yes, I have and am running solid lifters on a hyd cam and the truck runs fine. My problem had been having the hyd lifters leak down in cold weather no matter how I adjusted them. The truck missed something awful for several seconds after a cold start. The engine is out of a car so that explains why it has a hydraulic cam. I ran the previous engine over 100k miles with solid lifters on a hydraulic cam-just adjusted the valves 8 and 18. If someone has any ideas on how to keep the hydraulic lifters from leaking down I will reinstall them as they were a lot quieter once they pumped up. | | |
#16714 05/21/2003 6:32 PM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | I think solids are usually ok on a hydraulic cam but not vice versa. The hydraulic cam has a special ramp to keep the hydraulics working.
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