[Healeys] Valve clearances

[rjhco at att.net]

Valve clearances are not that critical.  A smaller clearance will slightly
lengthen the duration of the cam, while a larger clearance will shorten the
duration.  A larger clearance will also cause the valve opening to
accelerate more quickly, so, the valve train must be up to the stress.

 

I have run clearances all of the way from .006 to .020, depending on the cam
and the effect, which I want to accomplish.

 

When in doubt, set to the lash recommended by the cam manufacturer.

 

Regards,

Jim Hockert

 

From: Healeys <healeys-bounces at autox.team.net> On Behalf Of Bruce Steele
Sent: Saturday, January 12, 2019 1:25 PM
To: 'Bob Spidell' <bspidell at comcast.net>; healeys at autox.team.net
Subject: Re: [Healeys] Valve clearances

 

I'm also running the DWR-1 cam and was also instructed to set all clearances
at .015 cold.

 

Bruce Steele

Brea, CA

1960 BN7

 

From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of Bob
Spidell
Sent: Saturday, January 12, 2019 8:52 AM
To: healeys at autox.team.net <mailto:healeys at autox.team.net> 
Subject: Re: [Healeys] Valve clearances

 

Makes sense (for some reason).  I put a DWR1 cam in my BJ8 which, according
to DWR, 'is a little better than the BJ8 cam and so works well in any
standard or mildly tuned car' but I think the 0.015" applies to all profiles
on the spec sheet.

Bob

On 1/11/2019 8:48 PM, John Rowe wrote:

Simon,

Modified cams require the large clearance (don't ask me why?) So go for .015
that is what mine is.

John Rowe

Qld

Australia

 

From: Healeys [mailto:healeys-bounces at autox.team.net] On Behalf Of
simon.lachlan at alexarevel.plus.com <mailto:simon.lachlan at alexarevel.plus.com>

Sent: Saturday, 12 January 2019 9:14 AM
To: Healeys
Subject: [Healeys] Valve clearances

 

The car is a MkII BT7.

The BMC manual says adjust the clearances, cold, to 0.012".

Denis Welch said I should go 0.015", cold, after fitting their "Fast Road"
cam.

The rolling road guy said 0.016", warm.

 

I have the radiator out right now so I can get a nice socket onto that nut
and have a go at the clearances.

Stick with 0.015", cold?

 

Thanks,

Simon

 

 

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