[Healeys] Valve Clearances for an M

[WILLIAM B LAWRENCE]

I had mine ground by Isky about 4 years ago and just got the car back on the road. I'm very happy with the performance and tractability of the engine.

Bill Lawrence
BN1 #554
________________________________
From: i erbs <eyera3000 at gmail.com>
Sent: Friday, August 23, 2019 5:49 AM
To: WILLIAM B LAWRENCE <ynotink at msn.com>
Cc: Ahealey help <healeys at autox.team.net>; Steven Kingsbury <airtightproductions at icloud.com>
Subject: Re: [Healeys] Valve Clearances for an M

Ed Iskedarian cut the cam on my car 45 years ago. He called it a hot street cam. I lost the info about it years ago.

Ira Erbs
Portland, OR
typos and artifacts are the fault of my phone

On Thu, Aug 22, 2019, 9:56 PM WILLIAM B LAWRENCE <ynotink at msn.com<mailto:ynotink at msn.com>> wrote:
A high lift cam means that the valves come off the seat earlier and land back on the seat later than standard. That limits the valve's dwell time on the seat, which is critical to heat transfer from the valve to the seat. Greater clearance is the compromise to extend valve life. Isky specifies 0.018" for my cam. If you know the source of the cam I would go back to them for the spec.

I have the OA6, OA7, and OA8 needles and have tried them all. I found that, at least at this altitude (5,000-6,000 feet), the standard OA7s give the best results.

Bill Lawrence
BN1 #554
________________________________
From: Healeys <healeys-bounces at autox.team.net<mailto:healeys-bounces at autox.team.net>> on behalf of Steven Kingsbury via Healeys <healeys at autox.team.net<mailto:healeys at autox.team.net>>
Sent: Thursday, August 22, 2019 1:56 AM
To: healeys at autox.team.net<mailto:healeys at autox.team.net> <healeys at autox.team.net<mailto:healeys at autox.team.net>>
Subject: [Healeys] Valve Clearances for an M

OK folks, I know the setting for valve clearances on a 100 is 0.012, but when a hotter cam gets put in to a 100 with larger carbs and different pistons, does it stay 0.012? I am going to check all of the clearances on the set up as it sits now before I do any adjusting of anything, but thought I would run this by everyone before I touch or move anything. Thanks in advance.
   And just as an update, I got the OA6 Rich needles in now, I brought both jets up in the carbs evenly and then let them back down 12 flats each, so I've now got a base line to work with. I am re-installing the alternator conversion that was Mickey Moused into position with the Moss/AH Spares kit, which is quite nice nice and then I also just got a Snap On timing light so I can set the advance accurately. It's coming along, slowly, but that's okay, I'm in no big hurry, I just want it right as I plan on driving the wheels off of this car.
   Thanks again for any information you might pass along!
Steven Kingsbury
Hopped Up BN1
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