max lift 918 bee hive springs

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Feb 23, 2008 | 07:04 AM

elisowski

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Joined: Sep 2004

Posts: 271

From: Canfield, OH

max lift 918 bee hive springs

Do the valve springs determine the max lift? If not, what does?

If so, can 918 bee hives handle 0.600 lift?

Feb 23, 2008 | 09:30 AM

96flame

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Joined: Nov 2004

Posts: 599

From: Waterloo, Ontario

yes max is .600" when installed at the proper height. Need to make sure you don't have coil bind.

Feb 23, 2008 | 12:52 PM

matLT1

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Joined: Apr 2005

Posts: 957

From: Berkley, MI

Quote:

Originally Posted by elisowski

Do the valve springs determine the max lift? If not, what does?

If so, can 918 bee hives handle 0.600 lift?

Valve springs can determine your maximum lift. Other variables include: piston to valve interference (cam duration usually plays more of a factor for this) and valve retainer to valve seal clearance.

Feb 23, 2008 | 02:01 PM

11secgen

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Joined: Feb 2003

Posts: 321

From: houston

and i think the new 918's might alow for more lift.i cant remember exactly, but there is somthing differant about the newer style ones.somebody will chime in with that info im sure.

Feb 23, 2008 | 02:30 PM

speed_demon24

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Joined: Mar 2002

Posts: 3,245

From: Ocala, Florida

New ones are rated at .625 lift with a coil bind of 1.100".

Last edited by speed_demon24; Feb 23, 2008 at 02:34 PM.

Feb 23, 2008 | 03:20 PM

truedualws6

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Joined: Jan 2004

Posts: 1,406

From: Downey, CA

Very interesting, Comp has gone from a 313#/inch rate to 373. That is a
major difference in spring design.

Feb 23, 2008 | 08:57 PM

Stl94LT1

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Joined: Apr 2006

Posts: 1,083

From: O'Fallon, MO

I'm running 605/622 lift with my 918's.

Feb 23, 2008 | 09:37 PM

AZ2ENVY

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Joined: Nov 2000

Posts: 858

Stay VERY FAR away from Comp 918's

Trust me and everyone
who had them break on them

Feb 24, 2008 | 09:22 PM

ssean92

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Joined: Sep 2005

Posts: 411

From: ga

I have had them with no issues

Feb 24, 2008 | 09:33 PM

#10

11secgen

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Joined: Feb 2003

Posts: 321

From: houston

i thought they cleared up all of those issues when they switched suppliers!?

Feb 24, 2008 | 11:14 PM

#11

AZ2ENVY

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Joined: Nov 2000

Posts: 858

Quote:

Originally Posted by 11secgen

i thought they cleared up all of those issues when they switched suppliers!?

When they switched suppliers is when more and more springs were
breaking on people .

Feb 24, 2008 | 11:46 PM

#12

speed_demon24

Registered User

Joined: Mar 2002

Posts: 3,245

From: Ocala, Florida

Quote:

Originally Posted by AZ2ENVY

When they switched suppliers is when more and more springs were
breaking on people .

Actually they switched suppliers about a year before all the springs started breaking. The "experts" on here were a little late on getting that memo.

Feb 25, 2008 | 07:12 AM

#13

dangalla

Registered User

Joined: Jun 2006

Posts: 2,092

From: lakeville, pa

i would still just use the pac springs, 1518 are good to.650

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