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Author
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Topic: Lifters
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Hans olsson
Gearhead Posts: 733
From: Sweden
Registered: Apr 2000
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posted 01-25-2002 12:42 PM
   
How long should they last  . The surface that makes contact with the cam lobe dont last to long. Seat pressure is 150lbs intake 160lbs exhaust. mostly wear is on the intake lifters. How about it? Hans------------------
- 71 Mach1 351c
- E/SA 11.89-110
- F/SA 11.92-110
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Just Strokin
Gearhead Posts: 754
From: Tuscaloosa, Alabama
Registered: Dec 2001
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posted 01-25-2002 02:08 PM
a lifter should last a pretty long time provided the spring pressure isn't too great and it is getting oil.The open pressure is more critical than the seat pressure. Generally there is minimal pressure (like less than 5 pounds) on the cam lobe by the lifter via the valve train when the valves are closed. You didn't say how much the open pressure was, nor the lift at the valve, nor the engine or type of lifter. Can you give this info?
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Hans olsson
Gearhead Posts: 733
From: Sweden
Registered: Apr 2000
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posted 01-25-2002 02:56 PM
Motor is 351 Cleveland lift is .430 intake .450 exhaust. Open pressure is 320lbs give or take a few pounds.Cam is comp cam and lifters is crane hyd anti pump up#99280. Oil pressure is around 60 psi hot,castrol 0w30 synt.------------------
- 71 Mach1 351c
- E/SA 11.89-110
- F/SA 11.92-110
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Just Strokin
Gearhead Posts: 754
From: Tuscaloosa, Alabama
Registered: Dec 2001
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posted 01-25-2002 03:15 PM
According to crane and comp the seat pressure for most all their hydraulic cams should be about 125 pounds @ 1.800 inches and open pressure is 280 @ 1.300 inches.sounds like your spring pressure is too much for your hydraulic cam. just my thoughts.
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Moneymaker
Administrator Posts: 27499
From: Lyons, IL, USA
Registered: May 99
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posted 01-25-2002 09:53 PM
This is why the Schubeck lifter with the ceramic contact area has become so popular in stock eliminator and classes that require hydraulic lifters.  ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link
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Hans olsson
Gearhead Posts: 733
From: Sweden
Registered: Apr 2000
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posted 01-26-2002 02:01 PM
Thanks for your reply,guess i have to dig really deep in the pockets for Shubeck lifters .------------------
- 71 Mach1 351c
- E/SA 11.89-110
- F/SA 11.92-110
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Moneymaker
Administrator Posts: 27499
From: Lyons, IL, USA
Registered: May 99
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posted 01-26-2002 04:53 PM
You can't beat them Hans. Then you can get a REALLY aggressive camshaft and use the kind of spring pressure that Dan Youngblood, Cook, Buchannon, Glazener, Harris, and the rest of the fast 351C guys use. WOuld probably pick you up .4 or .5 for sure. NO KIDDING.  ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link
IP: Logged |
Hans olsson
Gearhead Posts: 733
From: Sweden
Registered: Apr 2000
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posted 01-26-2002 04:59 PM
For starters, i would be happy with lifters that did not look different every time we look at them  . About the camshaft... . ------------------
- 71 Mach1 351c
- E/SA 11.89-110
- F/SA 11.92-110
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n2oMike
Gearhead Posts: 2831
From: Spencer, WV
Registered: Jan 2001
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posted 01-26-2002 06:01 PM
Hans,Lifters are slightly rounded at the bottom... it's really slight, but they are. They are rounded down, not cupped inward. To see if the lifters are still servicable, just clean them and put two of them together, bottom to bottom. You can rock them back and forth to see if the round bottom is still rounded. If the bottom is still round, it's ok. Your cam specs didn't seem all that wild. You shouldn't be having any problems unless the springs are too stiff, you're getting coil bind, they have the wrong installed height, or the retainers are making contact with the top of the guide at max lift. You WILL see a wear pattern, but that doesn't mean the parts are all worn out. If you're not bound by any rules rules, and feel the need to change cams, go for a solid lifter unit. My cam has been in the engine for 8-9 years. No, it doesn't look brand new anymore, but it still works just fine. Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
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Hans olsson
Gearhead Posts: 733
From: Sweden
Registered: Apr 2000
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posted 01-27-2002 03:50 AM
Mike, the wear pattern starts in the middle and grows outward,assuming a concav shape(cupping). There is no mechanical interference in the valve train. The odd thing about it all is that,the exhaust lifters are doing fine for the most part. More pressure and lighter valves. .------------------
- 71 Mach1 351c
- E/SA 11.89-110
- F/SA 11.92-110
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Moneymaker
Administrator Posts: 27499
From: Lyons, IL, USA
Registered: May 99
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posted 01-27-2002 01:25 PM
Mike, Hans races in NHRA stock eliminator and IS bound by strict camshaft rules. Must be the same configuration as OEM. Must be factory lift at the valve. Duration and overlap are wide open. Springs must be of similar design and size, but pressure is not checked. Hydraulic lifters are checked to make sure they are not blocked. ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link
IP: Logged |
Hans olsson
Gearhead Posts: 733
From: Sweden
Registered: Apr 2000
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posted 01-27-2002 02:27 PM
Alex, what are your opinion on the Comp cam Hi Tech Hydraulic lifters? I have a used set,in good shape previosly used on this cam.Also im changing the valve locks from 613 to 614 (15 lbs less pressure). ------------------
- 71 Mach1 351c
- E/SA 11.89-110
- F/SA 11.92-110
[This message has been edited by Hans olsson (edited 01-27-2002).]
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Moneymaker
Administrator Posts: 27499
From: Lyons, IL, USA
Registered: May 99
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posted 01-27-2002 10:25 PM
Hans, they are good, but nothing and I do mean nothing beats the Schubecks! ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link
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MrXerox
Gearhead Posts: 348
From: Oklahoma City, Oklahoma
Registered: Nov 2000
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posted 01-27-2002 10:29 PM
Comon Alex, where was the "no brag, just fact" in that last statement?
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n2oMike
Gearhead Posts: 2831
From: Spencer, WV
Registered: Jan 2001
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posted 01-27-2002 11:42 PM
Sorry, I didn't know he was participating in class racing. 0.430/0.450" lift seemed kind of low to be having lifter problems... I guess those aggressive "spec" cams can be quite aggressive. The oil does seem a little suspect. Castrol 0W-30 doesn't seem to spell "scuff resistance" to me. I know the watery thin stuff is good for power since it's easy to pump.... and every little horsepower is important in your line of racing, but you might pick some brains about it. Alex will probably try and sell you some Royal Purple... along with some Schubeck lifters. Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
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Moneymaker
Administrator Posts: 27499
From: Lyons, IL, USA
Registered: May 99
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posted 01-28-2002 12:49 AM
OK, No brag, just fact! ------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link
IP: Logged |
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